Abstract

A pellet drying and roasting process based on a roasting system (1). The roasting system (1) is provided with a blast drying section (101), a draft drying section I (102), a draft drying section II (103), a preheating section (104), a roasting section (105), a soaking section (106), a cooling section I (107), and a cooling section II (108) in sequence. The process comprises: 1) a pellet material sequentially passes through the blast drying section (101), the draft drying section I (102) and the draft drying section II (103) to undergo drying, then sequentially passes through the preheating section (104), the roasting section (105) and the soaking section (106) to undergo preheating and roasting, and finally sequentially passes through the cooling section I (107) and the cooling section II (108) to undergo cooling to obtain pellet ore; and 2) air runs through a cooling fan and then cools the pellet ore in the cooling section II, and the discharged air is divided into two parts, which are respectively conveyed to the blast drying section (101) for blast drying of the pellet material and conveyed to the draft drying section I (102) for draft drying of the pellet material. The process increases the tolerable air temperature of the draft drying section II (103) and ensures that pellets would not burst during drying, thereby reducing energy consumption, enhancing roasting, and improving the productivity of an apparatus.

IPC Classes  ?

• C22B 1/24 - Binding; Briquetting

Abstract

An apparatus for reducing exhaust emission and strengthening the roasting process of oxidized pellets, the apparatus comprising a roasting device (1). According to the material processing direction, the roasting device (1) is sequentially provided with a first drying section (101), a second drying section (102), a third drying section (103), a preheating section (104), a roasting section (105), a soaking section (106), a first cooling section (107) and a second cooling section (108). An air outlet of the first drying section (101) is connected to an air inlet of the first cooling section (107) by means of a first pipeline (L1). In the present invention, three drying sections are provided, such that drying and preheating are enhanced. The first pipeline is arranged between the air outlet of the first drying section and the air inlet of the first cooling section, and waste gas discharged from the first drying section is recycled by means of the first pipeline, such that sensible heat of the discharged waste gas is utilized and heat consumption is reduced, and also waste gas emission in the pellet roasting process is greatly reduced.

IPC Classes  ?

• C22B 1/20 - Sintering; Agglomerating in sintering machines with movable grates
• F27B 21/00 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
• F27D 17/00 - Arrangement for using waste heat; Arrangement for using, or disposing of, waste gases

Abstract

Provided in the present invention are a port blended ore feeding method and system based on estimated quality. The method comprises: acquiring pre-selected feeding ports with water transport durations not greater than a first threshold value, and taking the pre-selected feeding ports as standby feeding ports, which involves firstly removing port blended ore which greatly affects the quality of finished blended ore in a water transport means, so as to obtain the standby feeding ports; then, after the standby feeding ports are acquired, acquiring a land transport segregation index of each standby feeding port feeding a target steel enterprise; then, comparing land transport segregation indexes of the standby feeding ports for feeding the target steel enterprise, such that the target steel enterprise selects, from among the standby feeding ports, a standby feeding port with a land transport segregation index meeting a preset transport segregation value, and takes the standby feeding port as a target feeding port; and finally, feeding the target steel enterprise by means of the target feeding port. By means of the method, the quality of finished blended ore which is blended at a port and is transported to a target steel enterprise is ensured, a sintering effect is thus ensured, and moreover, the secondary cost of the steel enterprise is reduced.

IPC Classes  ?

• G06Q 10/08 - Logistics, e.g. warehousing, loading or distribution; Inventory or stock management

Abstract

A method for co-processing hazardous waste by a rotary kiln and a sintering machine. The method comprises: 1) pyrolysis: feeding high-volatile hazardous waste into a rotary kiln (C1) from a kiln head (1), feeding combustion-supporting air into the rotary kiln (C1) from a kiln tail (3), and pyrolyzing the high-volatile hazardous waste in a pyrolysis chamber (20201); 2) incineration: feeding material residues obtained after pyrolysis and pyrolysis gas into an incineration chamber (20202), mixing with the combustion-supporting air and burning; 3) flue gas circulation: circulating part of flue gas obtained after the incineration into the rotary kiln (C1) from the kiln head (1); 4) cooling: cooling hot residues obtained after the incineration to obtain cold residues; and 5) sintering: placing the cold residues on a sintering trolley and igniting for sintering, in step 3), the proportion of the amount of the circulated flue gas entering the rotary kiln (C1) in the total flue gas amount being calculated according to the content of combustibles in the flue gas obtained the incineration and the temperature of the flue gas. According to the technical solution of using a counter-flow rotary kiln and a sintering machine, ring formation and slagging during the incineration of iron-containing solid waste in the rotary kiln (C1) is effectively relieved, and accurate control on the amount of the circulated flue gas in the rotary kiln (C1) is achieved.

IPC Classes  ?

• F23G 5/027 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including pretreatment pyrolising or gasifying
• F23G 5/14 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels including supplementary heating including secondary combustion
• F23G 5/32 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels in which the waste or low-grade fuel is subjected to a whirling movement, e.g. cyclonic incinerators

Abstract

Disclosed in the present invention is a process for collaborative treatment of multi-source wastewater in an iron and steel plant for zero-discharge. The process has the characteristics of selective quality separation and zero discharge of desalted water from a softening station and coal gas condensed water, collaborative treatment of concentrated water undergone high-pressure nanofiltration and cold rolling rinsing wastewater to recover sodium jarosite, collaborative treatment of high-pressure reverse osmosis concentrated water, desulfurization wastewater, and high-salt solid waste ashes, and the low-cost treatment of ammonia nitrogen. Meanwhile, the multi-source wastewater and the high-salt solid waste ashes are collaboratively treated, such that the content of pollutants in ash washing water can be greatly decreased, thereby reducing the subsequent wastewater treatment cost and the wastewater use amount, greatly reducing the treatment cost of solid waste and wastewater, and achieving internal consumption of the multi-source wastewater and zero discharge of the wastewater.

IPC Classes  ?

• C02F 9/00 - Multistage treatment of water, waste water or sewage

Abstract

2222222222222 cyclic utilization process is proposed; and a steel smelting system for realizing carbon chain circulation is proposed, thereby forming a carbon-hydrogen composite metallurgy process by reconstructing C, H and O dynamic balance, such that the carbon emission of the steel process is greatly reduced.

IPC Classes  ?

• B01D 53/62 - Carbon oxides
• B01D 53/04 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
• B01D 53/047 - Pressure swing adsorption
• B01D 53/34 - Chemical or biological purification of waste gases
• B01D 53/76 - Gas phase processes, e.g. by using aerosols
• B01D 53/82 - Solid phase processes with stationary reactants
• B01D 53/86 - Catalytic processes
• C10G 2/00 - Production of liquid hydrocarbon mixtures of undefined composition from oxides of carbon

Abstract

2334xxxO→Fe stage. Moreover, by means of an iron-containing composite pellet design having a special structure and mutual cooperation of an air flow internal circulation system of the rotary kiln and an air flow external circulation system of reformed gas, a reducing atmosphere of a material layer is greatly enhanced, the diffusion of a reducing agent in iron ore pellet particles is strengthened, a reduction reaction of the reducing agent of a low-temperature section in an iron ore pellet particle interface is strengthened, and the high efficiency of an iron oxide reduction process is finally realized.

IPC Classes  ?

• C21B 13/08 - Making spongy iron or liquid steel, by direct processes in rotary furnaces
• C21B 13/14 - Multi-stage processes
• C22B 1/243 - Binding; Briquetting with binders inorganic
• C22B 1/244 - Binding; Briquetting with binders organic

Abstract

A hazardous waste compatibility and weight system and method. The system comprises a hazardous waste information unit (100), an into-database management unit (200), a compatibility and weight rule unit (300), and an intelligent compatibility and weight model unit (400). The hazardous waste information unit (100) is used for obtaining attribute information of each hazardous waste and sending the attribute information to the into-database management unit (200), the attribute information comprising a unit calorific value, an inventory and component content; the into-database management unit (200) is used for importing the received attribute information into a hazardous waste information database; the compatibility and weight rule unit (300) is used for constructing a compatibility and weight rule and storing the compatibility and weight rule into the hazardous waste information database, the compatibility and weight rule comprising an element limit value rule of a target material; and the intelligent compatibility and weight model unit (400) is used for constructing a compatibility and weight model and calculating the compatibility and weight amount of each hazardous waste in the target material to obtain a current compatibility and weight solution. The hazardous waste compatibility and weight system is perfect in compatibility and weight process, takes element constraint and compatibility problems into account, and ensures that a compatibility and weight solution is a non-inferior solution.

IPC Classes  ?

• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model

Abstract

The present application relates to the technical field of hazardous waste treatment, and provides a hazardous waste incineration compatibility optimization method and apparatus, a terminal device, and a storage medium. The method comprises: obtaining attribute information of hazardous waste; establishing, according to a heat value per unit and the content of components in the attribute information, a maximum objective function set taking the maximum value of functions as an objective and a minimum objective function set taking the minimum value of the functions as an objective, at least one of a heat value objective function and a total mass objective function and at least one element threshold objective function being comprised; and constructing a compatibility optimization model and solving the compatibility optimization model to obtain a current compatibility scheme. Hence, according to the hazardous waste incineration compatibility optimization method of the present application, multiple targets in a compatibility problem are taken into consideration, the problems of the heat value, a compatibility amount, and the content of elements, etc. are used as constraints, and a relatively optimal solution is obtained after measuring indexes within a reasonable range, so that a balanced compatibility scheme that combines economy, environmental friendliness and safety is achieved.

IPC Classes  ?

• G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model

Abstract

2334xxxO→Fe in the deep reduction device. In the present technique, the reaction in the easy-reduction stage of reducing an iron oxide from a trivalent state to a divalent state is completed in the pre-reduction device, the reaction in the difficult-reduction stage from ferrous iron to metal iron is completed in the deep reduction device, and reduction conditions which can be provided in the pre-reduction device and the deep reduction device are fully utilized and are combined with the characteristics of the reduction process of the iron oxide, such that the high efficiency of the reduction process of the iron oxide is achieved.

IPC Classes  ?

• C21B 13/00 - Making spongy iron or liquid steel, by direct processes
• C21B 13/02 - Making spongy iron or liquid steel, by direct processes in shaft furnaces
• C21B 13/08 - Making spongy iron or liquid steel, by direct processes in rotary furnaces

Abstract

222 are activated into plasma-state CO+or H+ and are then introduced via the lower part of a material layer, thereby enhancing a reducing atmosphere of the material layer in the rotary kiln, intensifying the diffusion of a reductant in iron ore pellet particles, enhancing a reduction reaction of a reductant in an iron ore pellet particle interface in a low-temperature stage, and realizing purposes of saving energy, reducing emissions and improving production efficiency.

IPC Classes  ?

• C22B 1/216 - Sintering; Agglomerating in rotary furnaces
• C21B 13/08 - Making spongy iron or liquid steel, by direct processes in rotary furnaces
• C22B 1/02 - Roasting processes

Abstract

Three-phase combined heat supply type low-carbon sintering equipment, characterized in that: the equipment comprises a sintering machine trolley (1), a bottom fuel gas injection system (2), and heating sources; the bottom fuel gas injection system (2) is arranged below the sintering machine trolley (1); along the running direction of the sintering machine trolley (1), the heating sources are arranged on side portions of the sintering machine trolley (1). On the basis of currently using solid fuel to provide heat needed for sintering, fuel gas injection heat supply and heating source ignition heat supply are also introduced, and three-phase combined heat supply by solid fuel, fuel gas and heating sources is achieved; thus, the function of adding solid fuel into a sintering material layer in the prior art is gradually replaced by ignition of heating sources and heat release of fuel gas combustion, so that "low-carbon sintering" having a less coke ratio can be implemented.

IPC Classes  ?

• F27B 9/26 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on or in trucks, sleds, or containers
• F27B 9/06 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity electrically heated
• F27B 9/36 - Arrangements of heating devices
• F27D 99/00 - Subject matter not provided for in other groups of this subclass
• F27D 11/00 - Arrangement of elements for electric heating in or on furnaces
• F27D 17/00 - Arrangement for using waste heat; Arrangement for using, or disposing of, waste gases
• F27B 9/40 - Arrangements of controlling or monitoring devices
• C22B 1/22 - Sintering; Agglomerating in other sintering apparatus

Abstract

A system and method for preparing a sintering fuel at a fixed scale. The method comprises the following steps: 1) performing coarse screening on a sintering fuel to obtain an on-sieve coarse-grained fuel and an under-sieve fine-grained fuel; 2) crushing the on-sieve coarse-grained fuel to obtain a crushed fine-grained fuel; and 3) performing fine screening on the under-sieve fine-grained fuel and the crushed fine-grained fuel to complete the separation of a fine powder fuel, so as to obtain the sintering fuel satisfying particle size requirements. According to the process, a sintering fuel can be produced and prepared according to set particle size requirements, the influence of fine powder in the fuel on a sintering processing can be eliminated, the combustion efficiency and utilization rate of the fuel can be improved, the solid fuel consumption during sintering can be reduced, the air permeability of a sintering material layer can be improved, and the yield can be improved.

IPC Classes  ?

• B02C 4/02 - Crushing or disintegrating by roller mills with two or more rollers
• B02C 4/28 - Crushing or disintegrating by roller mills - Details
• B02C 23/14 - Separating or sorting of material, associated with crushing or disintegrating with more than one separator
• C21B 5/00 - Making pig-iron in the blast furnace

Abstract

Disclosed are a method and system for recycling sintered ash. High-purity potassium chloride can be produced by using sintered ash generated in a sintering process of an iron and steel enterprise, the problems of equipment corrosion and agglomeration resulting from alkali metals and chlorine entering sintering, a blast furnace, a rotary kiln and other high-temperature furnaces or kilns is simultaneously avoided, and ammonia nitrogen and sulfate radicals can be removed at a low cost, to improve the quality of a recycled crystalline salt; further, multi-effect countercurrent evaporation is achieved by adjusting the potassium-sodium ratio, and then the value of the crystalline salt is further improved; in addition, the present invention also has the advantages of simple process conditions, low energy consumption, zero discharge of wastewater and the like.

IPC Classes  ?

• C01D 3/04 - Chlorides
• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
• C01F 11/46 - Sulfates

Abstract

Disclosed are a cooperative treatment method and a treatment system for high-salt solid waste ash and acidic wastewater of a steel plant. High-purity potassium chloride is generated by means of the high-salt solid waste ash produced by steel enterprises. Meanwhile, on the basis of the characteristics of the high content of heavy metals such as thallium, the high ammonia-nitrogen concentration and the high sulfate concentration in the conventional high-salt solid waste ash washing wastewater, and in combination with the characteristics that the wastewater of the steel plant contains a large amount of sulfite ions (flue gas washing wastewater) or iron ions (cold rolling rinsing wastewater) and has a low acidity, the purposes of cooperative treatment and recycling of the high-salt solid waste ash and acidic wastewater of the steel plant are achieved based on the existing high-salt solid waste ash washing and wastewater recycling processes by means of the synergistic effects of the acidic wastewater sectional supply for ash washing, sulfur and ammonia-nitrogen removal, the advanced oxidation of thallium, COD and ammonia-nitrogen by iron-carbon micro-electrolysis, and countercurrent evaporation for potassium and sodium separation, thereby greatly improving the quality of the recycled potassium and sodium salts. In addition, the technical solution provided by the present invention further has the advantages of simple process conditions, low energy consumption, no wastewater discharge, etc.

IPC Classes  ?

• C02F 9/10 - Thermal treatment
• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
• C02F 101/16 - Nitrogen compounds, e.g. ammonia
• C02F 101/20 - Heavy metals or heavy metal compounds
• C02F 103/18 - Nature of the water, waste water, sewage or sludge to be treated from the wet purification of gaseous effluents

Abstract

The present application relates to the technical field of solid waste disposal, and provides a solid waste end selection method and system in solid waste cooperative disposal. The disposal method comprises: by determining whether disposal stocks of disposal ends are smaller than a preset demand threshold, marking a disposal end having a solid waste demand as a solid waste demand disposal end; then matching a disposal type of the solid waste demand disposal end with solid waste types of all solid waste ends, and preliminarily screening out first preselected solid waste ends from all the solid waste ends; then determining whether solid waste stocks of the first preselected solid waste ends reach a preset single transportation volume, and screening out second preselected solid waste ends from all the first preselected solid waste ends; and finally, determining a final solid waste end according to disposal costs or disposal power consumptions of the second preselected solid waste ends. By matching a more appropriate solid waste end for the disposal end from the entire area, the problems in existing solid waste disposal methods that resources of a disposal device cannot be fully utilized, allocation is unreasonable, the redundancy of the solid waste disposal capability in a small area is small, and the anti-risk capability is poor are overcome.

IPC Classes  ?

• G06Q 10/06 - Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling

Abstract

The present application relates to the technical field of solid waste disposal. Provided are a disposal end selection method and system for solid waste co-disposal. The method comprises: by determining the proportion of solid waste stock of a solid waste end to a limit storage capacity, determining a solid waste end to be subjected to disposal; then matching a solid waste type of the solid waste end to be subjected to disposal with disposal types of all disposal ends; preliminarily selecting first pre-selected disposal ends from among all the disposal ends; then determining the maximum receiving capacities of the first pre-selected disposal ends; further selecting second pre-selected disposal ends from among all the first pre-selected disposal ends; and finally determining a final disposal end according to the disposal costs or disposal energy consumption of the second pre-selected disposal ends, so as to dispose of solid waste of the solid waste end to be subjected to disposal. Therefore, overall deployment is performed on solid waste ends and disposal ends in a region, thereby overcoming the problems of the impossibility of making full use of disposal device resources, irrational allocation, the small redundancy of a solid waste disposal capacity in a small region, and a poor risk resistance capacity in existing solid waste disposal methods.

IPC Classes  ?

• G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
• G06Q 10/00 - Administration; Management

Abstract

Disclosed in the present invention is a solid waste synergistic sintering and pelletizing disposal process. The disposal process comprises: sieving solid waste residue obtained by means of subjecting multi-source solid waste to incineration and/or a pyrolysis treatment, then mixing and conveying coarse-particle-size solid waste residue and sintering raw materials to a sintering procedure, and mixing and conveying fine-particle-size solid waste residue and pelletizing raw materials to a pelletizing procedure. The solid waste residue can replace part of the fuel, such that the production cost is lowered; moreover, by selectively adding the sintering procedure or the pelletizing procedure, situations where the sintering quality is lowered due to the direct mixing of fine-particle-size solid waste residue into the sintering raw materials, and where the coarse-particle solid waste residue entering the pelletizing raw materials is not beneficial to pelletizing can also be avoided. In addition, a heat source generated during the incineration procedure and/or the pyrolysis procedure of the solid waste can also enter a high-water-content ore pretreatment system as a heat source. In order to provide a new way for realizing full-process disposal of various solid wastes, the impact of solid waste on the environment and the risk of secondary pollution are thoroughly eliminated while ensuring the quality of a sinter ore and a pellet ore.

IPC Classes  ?

• C22B 1/248 - Binding; Briquetting of metal scrap or alloys
• C22B 1/24 - Binding; Briquetting
• C22B 1/16 - Sintering; Agglomerating
• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless

Abstract

A solid waste treatment process centered on sintering and pelletizing procedures. After multi-source solid wastes are classified and subjected to respective pretreatment, pretreatment slag generated by the pretreatment enters sintering and pelletizing procedures for terminal treatment; and meanwhile, waste gas generated in the pretreatment process can be collected into sintering flue gas for collaborative purification, wastewater generated by further pretreatment and wastewater generated in the sintering and pelletizing procedures are subjected to unified wastewater salt extraction resourceful treatment, finally, full-process treatment of various solid wastes is achieved, and the effect of solid wastes on the environment and the risk of secondary pollution are thoroughly eliminated.

IPC Classes  ?

• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
• B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass
• C22B 1/248 - Binding; Briquetting of metal scrap or alloys
• C22B 1/16 - Sintering; Agglomerating

Abstract

A cooperative emission reduction method for sintering using an energy-carrying composite gas is disclosed. A surface of a sintered material is divided into an ignition section, a heat preservation section, a middle section, a flue gas heating section, and a machine tail section from a machine head to a machine tail of a sintering machine; according to flue gas components, temperature characteristics, and heat requirements of different sections, a hot exhaust gas is introduced to the ignition section for ignition, a hot exhaust gas is introduced to the heat preservation section and a hydrogen-rich gas is cascadingly sprayed synchronously, cascaded spraying of water vapor is coupled based on spraying of a hydrogen-rich gas in the middle section, and the high-temperature flue gas in the machine tail section and the flue gas in the ignition section and/or the heat preservation section are circulated to the heating section.

IPC Classes  ?

• C21B 5/00 - Making pig-iron in the blast furnace
• F27D 17/00 - Arrangement for using waste heat; Arrangement for using, or disposing of, waste gases

Abstract

A layered compound heat supply-based heat-balanced sintering method, which comprises: 1) performing material preparation on an iron-containing raw material, a flux, a solid fuel, and water, and performing material distribution of a prepared sintering mixed material onto a sintering pallet car; 2) igniting the sintering mixed material distributed on the sintering pallet car, and starting to sinter a surface layer of the sintering mixed material located within the sintering pallet car; 3) after ignition, blowing a high temperature gas towards a material surface of the sintering mixed material, the high temperature gas providing heat for an upper-middle layer of the sintering mixed material; 4) after undergoing heat preservation and heat supply, blowing a combustible gas on a material surface of the sintering mixed material, the combustible gas burning within a material layer and supplying heat for a middle layer of the sintering mixed material; 5) after undergoing gas blowing, blowing steam at a material surface of the sintering mixed material, the steam storing heat and supplying heat for a lower layer of the sintering mixed material. By utilizing the present invention, the problem in traditional sintering where there is insufficient heat in an upper material layer and surplus heat in a lower material layer can be effectively solved, and eco-friendly, heat-balanced, low-carbon sintering can be implemented.

IPC Classes  ?

• C22B 1/16 - Sintering; Agglomerating

Abstract

A control system and a control method for a pelletizing machine (11). Said system comprises a pelletizing machine (11), a water supply device (21), a feeding belt scale (31), a rotational speed controller (12), an inclination angle controller (13), a water controller (22), a material controller (32) and a central processing unit (5). The central processing unit (5) is configured to execute the following steps: according to the rotational speed of the pelletizing machine (11), the inclination angle of a pelletizing disk of the pelletizing machine (11), the feeding amount of material and the feeding amount of water, the type and proportion of each component in a mixture, the proportion of the binder in the mixture, and the original moisture content of the mixture, predicting the qualified rate of green pellets, and obtaining the predicted values of the qualified rate of green pellets in multiple prediction periods; and in combination with the predicted value of the qualified rate of green pellets of each prediction period and the preset target value of the qualified rate of green pellets of each prediction period, using a rolling optimization model to optimize the rotational speed of the pelletizing machine (11), the inclination angle of the pelletizing disk of the pelletizing machine (11), the feeding amount of material and the feeding amount of water, so as to achieve real-time control of the rotational speed of the pelletizing machine (11), the inclination angle of the pelletizing disk of the pelletizing machine (11), the feeding amount of material supplied to the pelletizing machine (11), and the feeding amount of water supplied to the pelletizing machine (11) in the pelletizing machine (11), so that the actual qualified rate of green pellets can reach the preset standard, thereby improving the pelletizing quality of the pelletizing machine (11).

IPC Classes  ?

• G05D 27/02 - Simultaneous control of variables covered by two or more of main groups characterised by the use of electric means
• C22B 1/24 - Binding; Briquetting
• G06N 3/04 - Architecture, e.g. interconnection topology
• G06T 1/00 - General purpose image data processing
• G06T 7/00 - Image analysis

Abstract

The present application relates to the technical field of iron and steel smelting. Provided are a material distribution control system and method based on material layer thickness prediction. In an actual application process, the bulk density of a mixed material, the rotating speed of a feeding roller, the rotating speed of a material distribution roller, the opening degree of an auxiliary door, and the speed of a sintering trolley are first obtained; the characteristic value of the thickness of a material layer is generated by using a pre-established material layer thickness dynamic prediction model, and data restore is performed on the characteristic value of the thickness of the material layer to obtain a predicted value of the thickness of the material layer; then the deviation value of the thickness of the material layer is calculated according to the predicted value of the thickness of the material layer and the target value of the thickness of the material layer; and finally, the deviation value of the thickness of the material layer is inputted into a rolling optimization model, so as to obtain the rotating speed to be adjusted of the feeding roller, the rotating speed to be adjusted of the material distribution roller, the opening degree to be adjusted of the auxiliary door, and the speed to be adjusted of the sintering trolley. Therefore, the material distribution control of a sintering system based on the material layer thickness prediction is achieved, thereby achieving the accurate control of the material distribution process of the sintering system.

IPC Classes  ?

• F27B 21/14 - Arrangement of controlling, monitoring, alarm or like devices
• G06N 3/04 - Architecture, e.g. interconnection topology

Abstract

A material pile stocktaking system for a raw material yard, comprising a material piling/taking machine (21), a scanning device (22), and a control terminal (23). Material piles (131, 132, 133, 134, 135, 136) in material strips (121, 122, 123) are scanned by means of the scanning device (22) mounted on a large boom of the material piling/taking machine (21); scan data of each reflection point on the surfaces of the material piles (131, 132, 133, 134, 135, 136) is obtained; coordinate values of the reflection points in cross section coordinate systems are determined according to the scan data of the reflection points; furthermore, cross section areas corresponding to the reflection points are determined according to the coordinate values of the reflection points; furthermore, the volumes of the material piles (131, 132, 133, 134, 135, 136) are determined; according to the volume and a corresponding pile density of each of the material piles (131, 132, 133, 134, 135, 136) in the raw material yard, stocktaking can be performed on all the material piles (131, 132, 133, 134, 135, 136) in the raw material yard. Also disclosed is a material pile stocktaking method for a raw material yard. When the system performs stocktaking on the material piles (131, 132, 133, 134, 135, 136), scientific measurement is performed by means of scanning the material piles (131, 132, 133, 134, 135, 136), thereby greatly improving the precision and accuracy of stocktaking and laying a foundation for an unmanned material yard; moreover, the device is easy to mount, and the maintenance cost is low, thereby greatly reducing the economic cost required by stocktaking.

IPC Classes  ?

• G01F 22/00 - Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
• G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
• G01N 9/00 - Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity

Abstract

A reclaiming system and method, comprising a laser scanning device (4) and a control unit (5). The control unit (5) is configured to perform the following steps: obtain a stockpile model; calculate the number of material layers in a region to be reclaimed; divide a stockpile region into a plurality of regions to be reclaimed; use said region located on the uppermost layer as a target region to be reclaimed, and obtain a reclaiming entry point of said target region; calculate target attitude data corresponding to the reclaiming entry point; control a reclaimer to move to the target attitude; control a boom (2) to rotate by a preset first direction; determine in real time whether the position of a bucket wheel (3) reaches the reclaiming boundary of said target region; if yes, control the boom (2) to decrease the rotational speed; control a bogie (1) to move to the next reclaiming position; and rotate the boom (2) by a second direction and continue performing a reclaiming operation. The reclaiming system can achieve an automatic reclaiming operation, and solves the existing safety problem of the personnel and equipment caused by the manual operation of the reclaimer.

IPC Classes  ?

• B65G 65/28 - Piling or unpiling loose materials in bulk, e.g. coal, manure, timber, not otherwise provided for
• B65G 65/04 - Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads with pick-up shovels

Abstract

A flue gas treatment process and treatment system, using an SNCR-SCR coupled denitration system control method, wherein an SNCR catalyst is sprayed in a preheating section II (PH) and/or in a first pipeline (L1) connecting an air inlet of the preheating section II (PH) and an air outlet of a rotary kiln (2); in the preheating section II (PH) and/or the first pipeline (L1), NOx and the SNCR catalyst are subjected to an SNCR denitration reaction in hot air; and hot air discharged from the preheating section II (PH) is subjected to an SCR denitration treatment via an SCR denitration device (5), and then conveyed to a down-draft drying section (DDD). In addition, a composite additive is added into the SNCR denitration catalyst or a new SNCR composite ammonia is provided, and a movable airflow balance plate (301) is also additionally arranged between the preheating section II (PH) and a preheating section I (TPH) in a grate, thereby controlling the air pressure of the preheating section I (TPH) to be greater than or equal to the air pressure of the preheating section II (PH) by using a position change of the airflow balance plate (301).

IPC Classes  ?

• B01D 53/86 - Catalytic processes
• B01D 53/90 - Injecting reactants
• C22B 1/20 - Sintering; Agglomerating in sintering machines with movable grates
• C22B 1/216 - Sintering; Agglomerating in rotary furnaces

Abstract

A method for self-induced separation of fluorine and chlorine, comprising the following steps: 1) obtaining a saturated chlorine-containing solution: adding chlorine to fluorine-chlorine wastewater to increase the concentration of chloride ions in the fluorine-chlorine wastewater until the chloride ions are supersaturated, and crystalizing and precipitating all the fluoride ions and some chloride ions in the wastewater to obtain fluorine-chlorine mixture crystals, the liquid phase being the saturated chlorine-containing solution; 2) obtaining a chloride crystal salt: crystalizing the saturated chlorine-containing solution obtained in step 1) to obtain the chloride crystal salt; and 3) obtaining fluoride crystals by separation: dissolving the fluorine-chlorine mixture crystals obtained in step 1) to obtain a fluorine-chlorine mixed solution, and with multiple dissolutions and addition of fluoride, obtaining the fluoride crystals by means of separation. Also disclosed is a system for self-induced separation of fluorine and chlorine. The treatment method and system for separating fluorine and chlorine can reduce the use of auxiliary additives, and effectively and accurately separate fluorine elements from chlorine elements, thereby improving the disposal quality and purity of the fluorine-chlorine wastewater.

IPC Classes  ?

• C02F 9/10 - Thermal treatment
• C01D 3/14 - Purification
• C01D 3/02 - Fluorides
• C01D 3/04 - Chlorides

Abstract

Disclosed are an air channeling prevention system for a preheating (PH) section of a chain grate machine and an air flow control method therefor. The system comprises a chain grate machine and a rotary kiln. The chain grate machine is sequentially provided with a blast drying section, an air suction drying section, a first PH section, and a second PH section. The second PH section is in communication with a flue gas outlet of the rotary kiln by means of a first pipeline. An air channeling prevention device is provided between the first PH section and the second PH section. According to the present invention, a movable air channeling prevention device is additionally arranged between a PH section and a TPH section of the chain grate machine, and the air pressure of the TPH section is controlled to be greater than or equal to the air pressure of the PH section by using the change in the position of the air channeling prevention device, so as to avoid the problem of the increase in the content of NOx in a flue gas at the TPH section due to the air channeling of high NOx waste gas at the PH section to the TPH section. Ultra-low NOx emissions are achieved by the precise regulation of the air flow control method.

IPC Classes  ?

• C22B 1/20 - Sintering; Agglomerating in sintering machines with movable grates
• F27D 13/00 - Apparatus for preheating charges; Arrangements for preheating charges

Abstract

An air permeability detection robot system and a sintering process control method and system. The robot system is controlled to detect the moisture content, granularity composition and bulk density of a first detection sample and a second detection sample, and to calculate the bulk density change rate of a mixture. An air permeability correction coefficient of the mixture is adjusted according to the bulk density change rate of the mixture and a corresponding preset coefficient adjustment policy, and the air permeability and the air permeability change rate of the mixture are calculated. An intelligent sintering process control model is controlled to select a target control policy corresponding to the permeability change rate of the mixture, and when current process parameters of the sintering process do not meet requirements, the process parameters of the sintering process are adjusted. Hence, the method and the system may achieve air permeability detection of the mixture, adjust the process parameters of the sintering process by taking the air permeability as a reference, have higher adjustment precision, and avoid overburning in the sintering process so as to ensure the quality of a sintered product.

IPC Classes  ?

• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials
• G01N 15/02 - Investigating particle size or size distribution
• G01N 5/04 - Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
• G01N 9/00 - Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
• G01N 1/38 - Diluting, dispersing or mixing samples
• F27D 21/00 - Arrangement of monitoring devices; Arrangements of safety devices
• C22B 1/24 - Binding; Briquetting
• C22B 1/16 - Sintering; Agglomerating

Abstract

2XXX, and 50-80% of dioxin can be achieved.

IPC Classes  ?

• C22B 1/16 - Sintering; Agglomerating
• F27D 17/00 - Arrangement for using waste heat; Arrangement for using, or disposing of, waste gases

Abstract

Provided in the present invention are a flue gas multi-pollutant synergistic purification process and apparatus: after denitrification treatment, adding an oxidation treatment system, and passing flue gas having undergone denitrification treatment through the oxidation treatment system, such that carbon monoxide in the flue gas is converted into carbon dioxide; the heat released during said process is directly used for raising the temperature of flue gas before entering the denitrification apparatus, reducing or even omitting the process of raising the temperature of the flue gas by means of external fuel heating. The present invention fully utilises the carbon monoxide in the flue gas, using the heat released during the conversion of carbon monoxide into carbon dioxide to achieve the objective of raising the temperature of the flue gas for denitrification treatment, saving or even eliminating the use of fuel whilst treating the carbon monoxide in the flue gas, and thereby reducing the pollution of the environment by the flue gas and reducing or even avoiding secondary pollution in the flue gas treatment process.

IPC Classes  ?

• B01D 53/75 - Multi-step processes
• B01D 53/50 - Sulfur oxides
• B01D 53/60 - Simultaneously removing sulfur oxides and nitrogen oxides
• B01D 53/56 - Nitrogen oxides
• B01D 53/78 - Liquid phase processes with gas-liquid contact

Abstract

Provided are a system and a method for denitration of flue gas by carbon monoxide, wherein the system comprises a hot air generation device (1), a CO reactor (2), and an SCR reactor (3); a first pipeline (L1) and a second pipeline (L2) separated from an original flue gas transmission pipe (L0) are respectively connected to a main reaction tower (201) and a bypass (202) of the CO reactor (2); a third pipeline (L3) led out from a flue gas outlet of the main reaction tower (201) of the CO reactor (2) and a fourth pipeline (L4) led out from the bypass (202) of the CO reactor (2) are combined and then connected to the SCR reactor (3) through a fifth pipeline (L5); and a hot air outlet of the hot air generation device (1) is connected to the first pipeline (L1) through a sixth pipeline (L6). The heat released in the process of converting carbon monoxide to carbon dioxide achieves the purpose of increasing the temperature of the flue gas for denitration treatment, which saves the use of fuel and also avoids the problem that the CO catalyst is prone to inactivation when encountering sulfur oxide at low temperatures.

IPC Classes  ?

• B01D 53/62 - Carbon oxides
• B01D 53/56 - Nitrogen oxides
• B01D 53/86 - Catalytic processes
• F23J 15/08 - Arrangements of devices for treating smoke or fumes of heaters

Abstract

A flue gas multi-pollutant collaborative purification process method and apparatus, comprising: injecting ammonia gas into original flue gas; mixing the ammonia gas with the original flue gas; the mixed gas of the ammonia gas and the original flue gas passing through a desulfurization adsorption treatment apparatus (1), so as to achieve fine desulfurization treatment of the original flue gas; after the fine desulfurization, the flue gas passing through an SCR denitration treatment apparatus (2), so as to achieve denitration treatment of the flue gas; and the flue gas after the denitration treatment passing through a CO catalytic oxidation treatment apparatus (3), so as to achieve CO removal treatment of the flue gas. Before the flue gas is denitrified, the flue gas is subjected to the fine desulfurization treatment, so as to prevent sulfur dioxide from poisoning an SCR catalyst, improve the efficiency of desulfurization and denitration, reduce the production cost of a production enterprise, and improve product quality.

IPC Classes  ?

• B01D 53/50 - Sulfur oxides

Abstract

A method for controlling a hot air fan of a separation column, for controlling the rotation speed of the hot air fan of the separation column. The control method comprises the following steps: when a separation column is in normal operation, acquiring the current production heat transfer coefficient for a heating stage of the separation column; acquiring a target end control temperature for the heating stage of the separation column; and obtaining, on the basis of the production heat transfer coefficient and the target end control temperature, the rotation speed of a hot air fan.

IPC Classes  ?

• B01D 53/02 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography

Abstract

A pre-dechlorination-sintering treatment process for high-chlorine metallurgical waste and incineration fly ash. Said process comprises: mixing high-chlorine metallurgical dust and sludge, waste incineration fly ash with carbon fuel uniformly, balancing water using chlorine-containing wastewater, and pressing same into agglomerates; placing the obtained agglomerates in an oxygen-deficient atmosphere, and performing roasting pretreatment to obtain roasted blocks; and allowing the roasted blocks to participate in sintering as a primer for iron ore sintering. Said process reduces the pollution of chlorine and dioxins during sintering of solid waste by means of roasting pretreatment, realizes the resource utilization of Fe, Ca, C and other components in solid wastes such as high-chlorine metallurgical dust and sludge and waste incineration fly ash, and realizes the reuse of chlorine-containing wastewater at the same time.

IPC Classes  ?

• B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
• B09B 5/00 - Operations not covered by a single other subclass or by a single other group in this subclass

Abstract

A wind pressure-type escape prevention system having a gas injection-used cover top and a control method therefor. Said escape prevention system comprises: an injection cover, located at the top of a sintering pallet; an injection pipeline row, provided inside the injection cover and located above the sintering pallet, and used for injecting a combustible gas onto a sintering material surface of the sintering pallet; and a gas pipeline, used for transporting combustible gas to the injection pipeline row. Said escape prevention system further comprises: an airflow device, provided at the top of the injection cover, and used for driving the outside air to generate an airflow and inputting the generated airflow downwards into the interior of the injection cover from the top of the injection cover, so as to form, at a position above the injection pipeline row, a wind pressure zone which makes the combustible gas unable to pass upwards. The escape prevention system can basically eliminate a gas escape phenomenon, and help to suck air outside the cover, thereby achieving the purposes of stable production, smooth production and quality production of a sintering production line.

IPC Classes  ?

• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
• F27B 21/14 - Arrangement of controlling, monitoring, alarm or like devices
• C22B 1/16 - Sintering; Agglomerating

Abstract

Provided are a lime kiln and heat supply method thereof, said lime kiln containing a kiln chamber (1), a heating device, and a combustion-supporting fan (2); the heating device comprises a fuel supply device and a spray gun set (3); the fuel supply device comprises a coal gas supply device (4) and a pulverized-coal supply device (5); the coal gas supply device (4) comprises a coal gas ring pipe (401) and a coal gas branch pipe (402); the pulverized-coal supply device (5) comprises a pulverized-coal ring pipe (501) and a pulverized-coal branch pipe (502); the coal gas supply device (4) and the pulverized-coal supply device (5) share the spray gun set (3); each coal gas branch pipe (402) is provided with a coal-gas branch pipe regulating valve (403); each pulverized-coal branch pipe (502) is provided with a pulverized-coal branch pipe regulating valve (503); a flow rate detector (311) is disposed on the spray gun (31); a first heat-value detector (404) and a first pressure detector (405) are respectively arranged on the coal gas ring pipe (401); a second heat value detector (504) is arranged on the pulverized-coal ring pipe (501); a second pressure detector (11) is disposed inside the kiln chamber (1); the spray gun set (3) comprises a plurality of spray gun matrices; each spray gun matrix comprises a plurality of spray guns (31) evenly distributed along the circumference thereof.

IPC Classes  ?

• C04B 2/10 - Preheating, burning, calcining or cooling
• F27D 17/00 - Arrangement for using waste heat; Arrangement for using, or disposing of, waste gases
• F23D 17/00 - Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel

Abstract

The present application provides a flue gas purifying system capable of efficiently treating flue gases produced under multiple working conditions. The flue gases produced under multiple working conditions are conveyed into a purifying treatment system comprising an integrated tower consisting of a plurality of independent activated carbon adsorption units or unit groups, and a desorption tower through flue gas conveying pipes, the flue gas produced under each working condition is treated by the independent activated carbon adsorption unit or unit group, and pollutant-adsorbed activated carbon in the activated carbon adsorption units or unit groups is desorbed and activated by the desorption tower and is then conveyed into each activated carbon adsorption unit or unit group for reuse. The present purifying treatment system can independently treat the flue gas produced under each working condition, the flow field of the flue gas produced under each working condition is not affected, emission standards are different, operating parameters during treatment of the flue gases produced under the working conditions are different, and then the activated carbon is desorbed unifiedly, thereby greatly reducing the use of the desorption tower, saving the equipment investment, and improving the utilization rate and the working efficiency of the desorption tower.

IPC Classes  ?

• B01D 53/02 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
• B01D 53/04 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents

Abstract

A desulfurization and denitration device that has high-efficiency denitration, the device comprising: an adsorption tower (1), an analytical tower (2), a gas mixer (3), a first activated carbon conveyor (4), a second activated carbon conveyor (5) and an activated carbon material bin (AC) disposed above the adsorption tower (1), wherein the adsorption tower (1) is provided with a flue gas inlet (A) at one side thereof, and is provided with a flue gas outlet (B) at the other side thereof; a first gas pipe (L1) leading out from a gas outlet of the gas mixer (3) is connected to a gas inlet of the activated carbon material bin (AC), a second gas pipe (L2) leading out from the gas outlet of the gas mixer (3) is connected to the flue gas inlet (A), and a third gas pipe (L3) leading out from a gas outlet of the activated carbon material bin (AC) merges with the second gas pipe (L2). The present application adopts activated carbon to pre-adsorb a portion of ammonia; and at the same time, in order to enhance the denitration effect, a portion of ammonia is re-injected in the middle of the adsorption tower.

IPC Classes  ?

• B01D 53/06 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents
• B01D 53/08 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents according to the "moving bed" method
• B01D 53/60 - Simultaneously removing sulfur oxides and nitrogen oxides
• B01D 53/76 - Gas phase processes, e.g. by using aerosols
• B01D 53/86 - Catalytic processes
• B01D 53/56 - Nitrogen oxides

Abstract

A desulfurization, denitrification, and ammonia removal system. The system comprises an adsorption tower, a decomposition tower, a distributor, a first activated carbon conveyor, and a second activated carbon conveyor. A fume inlet is provided on one side of the adsorption tower. A fume outlet is provided at the other side of the adsorption tower. An adsorption cavity and an ammonia removal cavity are provided within the adsorption tower. The adsorption cavity is provided on the side in proximity to the fume inlet. The ammonia removal cavity is provided on the side in proximity to the fume outlet. The first activated carbon conveyor is connected to a material outlet of the absorption tower and to a material inlet of the distributor. The second activated carbon conveyor is connected to a material outlet of the decomposition tower and to a material inlet of the adsorption cavity. A material outlet of the distributor is connected respectively to a material inlet of the ammonia removal cavity and to a material inlet of the decomposition tower. The present application divides the adsorption tower into two functional areas, the adsorption reaction cavity implements the functions of desulfurization, denitrification, and dust removal, and the ammonia removal cavity is filled with fresh activated carbon or acidic activated carbon and implements the capturing of ammonia in fume that passed through an adsorption reaction layer, thus effectively preventing the escape of ammonia at the outlet.

IPC Classes  ?

• B01D 53/60 - Simultaneously removing sulfur oxides and nitrogen oxides
• B01D 53/81 - Solid phase processes
• B01D 53/58 - Ammonia
• B01D 53/02 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
• B01D 53/76 - Gas phase processes, e.g. by using aerosols
• B01D 53/96 - Regeneration, reactivation or recycling of reactants

Abstract

Disclosed are a multi-process flue gas purification system and a control method therefor, comprising: providing a centralized analysis sub-system in a sintering process to form an integrated structure with a sintering process adsorption sub-system, and enabling activated carbon circulated between the centralized analysis sub-system and the sintering process sub-system to pass through a conveyor unit so as to complete circulation, without an additional conveying device, so that the influence of the conveying process on the operation of the system is reduced while conveying resources are saved. According to the present application, the centralized analysis sub-system comprises a material distributing apparatus; the activated carbon is distributed to the sintering process adsorption sub-system by means of a first material distributing device, and the activated carbon flow of the centralized analysis sub-system is balanced with that of the sintering process adsorption sub-system and the remaining adsorption sub-systems; by setting working parameters of a feeding apparatus, a discharging apparatus, and the material distributing apparatus of the centralized analysis sub-system, accurate control of a balanced relation between the centralized analysis sub-system and the adsorption sub-systems is realized on one side of the centralized analysis sub-system.

IPC Classes  ?

• B01D 53/02 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography

Abstract

A multi-process flue gas purification system and a method for controlling same. The flue gas purification system comprises an activated carbon centralized analysis activation subsystem (2), as well as flue gas purification devices (110, 120) corresponding to each process; each flue gas purification device (110, 120) is connected to the activated carbon centralized analysis activation subsystem (2) respectively by means of an activated carbon transport subsystem (3); a main control unit uses the sum of activated carbon circulating flows sent by corresponding process control units of all of the processes to represent the activated carbon circulating flow of the activated carbon centralized analysis activation subsystem (2), and controls an activation subsystem control unit (102) to adjust the given frequency of a beltweigher (26), a feeding device (22) and a discharging device (24) in the activated carbon centralized analysis activation subsystem (2) so that the sum of the activated carbon circulating flow at the activated carbon centralized analysis activation subsystem (2) and the activated carbon circulating flow of the flue gas purification device (110, 120) in each process is essentially equal.

IPC Classes  ?

• B01D 53/06 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents

Abstract

An interface device (3) used for multi-process flue gas purification, and an active carbon transportation system and method: according to a discharge request of a flue gas purification device (1), a transport device (4) moves into a card slot (304) of an interface device (3) of an adsorption unit to be discharged (101); after a position detecting switch (305) and a weighing sensor (306) are triggered, the adsorption unit (10) to be discharged is discharged to the transport device (4) when a preset discharge time is reached; when the amount of material of the transport device (4) reaches a threshold value, discharge is stopped, and the transport device (4) containing contaminated active carbon moves to an analysis activation system (2); according to a feeding request of the flue gas purification device (1), the transport device (4) moves into the card slot (304) of the interface device (3) of an activated active carbon cartridge (202); when the position detecting switch (305) and the weighing sensor (306) are triggered, the activated carbon cartridge (202) is discharged into the transport device (4); when the amount of material of the transport device (4) reaches a threshold value, discharge is stopped, and the transport device (4) containing activated active carbon moves to the flue gas purification device (1) to be fed.

IPC Classes  ?

• B01D 53/02 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography

Abstract

Provided are a double-tower-type or double-parallel-row-type activated carbon adsorption tower, a flue gas purification method, and a desulfurization and denitrification system. In the activated carbon adsorption tower, each of a left tower (1) and a right tower (1) comprises a lower activated carbon bed layer part (A), an upper activated carbon bed layer part (B), a middle transition area (C) located between the two parts, and a first gas chamber (G1), second gas chambers (G2), a third gas chamber (G3) and fourth gas chambers (G4). The lower activated carbon bed layer part (A) comprises a first lower material chamber (a1), a second lower material chamber (a2) and a third lower material chamber (a3). The upper activated carbon bed layer part (B) comprises a first upper material chamber (b1), a second upper material chamber (b2) and a third upper material chamber (b3). The first lower material chamber (a1) is in communication with the first upper material chamber (b1) by means of a row of first unloading passages (c1), the second lower material chamber (a2) is in communication with the second upper material chamber (b2) by means of a row of second unloading passages (c2), and the third lower material chamber (a3) is in communication with the third upper material chamber (b3) by means of a row of third unloading passages (c3), wherein there are gaps between multiple unloading passages of each row. A star wheel-type activated carbon discharge roller (106) is mounted below a discharge port of each material chamber.

IPC Classes  ?

• B01D 53/08 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents according to the "moving bed" method

Abstract

A material control method and system for a flue gas purification device. The method comprises: obtaining a basic equilibrium speed in real time (101), the basic equilibrium speed being the operating speed of a roller feeder of a desorption tower (200) when the total discharge of the desorption tower (200) per unit time is equal to the total discharge of an adsorption tower (100); obtaining a target speed in real time according to the difference between the actual average material level of the adsorption tower (100) and a target average material level and the basic equilibrium speed (102); if the operating speed of the roller feeder of the adsorption tower (100) is detected to change within a range wider than a preset range during a preset first period of time, controlling the roller feeder of the desorption tower (200) to operate at the basic equilibrium speed (103); and if the difference between the actual average material level of the adsorption tower (100) and the target average material level is detected to remain within a preset difference range for a preset second period of time, controlling the roller feeder of the desorption tower (200) to operate at a target speed (104). The material control method for the flue gas purification device can ensure that the operation of the material is quickly adjusted to a relatively balanced state when the actual material level of the adsorption tower (100) changes abruptly, and thus has better applicability.

IPC Classes  ?

• G05D 9/12 - Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
• B01D 53/02 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography

Abstract

An ammonia injection amount control method and apparatus for an activated carbon desulfurization and denitration system. The method comprises: obtaining inlet flue gas state data, outlet flue gas state data, a value of temperature and pressure compensated inlet flue gas flow, and ammonia diluting air flow; calculating a first ammonia injection amount correction value according to a preset first calculation model on the basis of the inlet flue gas state data, the outlet flue gas state data, the value of temperature and pressure compensated inlet flue gas flow, the ammonia diluting air flow, and a preset parameter; and calculating a first ammonia injection amount target value corresponding to the first ammonia injection amount correction value according to a preset second calculation model. Also disclosed is an ammonia injection amount control apparatus for an activated carbon desulfurization and denitration system.

IPC Classes  ?

• B01D 53/60 - Simultaneously removing sulfur oxides and nitrogen oxides
• B01D 53/76 - Gas phase processes, e.g. by using aerosols
• B01D 53/02 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography

Abstract

A flue gas desulfurization and denitrification device comprises a first-level adsorption tower (T1) and an activated carbon stripper (T3). A discharge chamber (a, b) of the first-level adsorption tower (T1) is divided into an upper discharge chamber (a) and a lower discharge chamber (b). Alternatively, the device comprises a first-level adsorption tower (T1), a second-level adsorption tower (T2) and an activated carbon stripper (T3) that are serially connected. A discharge chamber (a, b, c) of the first-level adsorption tower (T1) is divided into an upper discharge chamber (a), a middle discharge chamber (c) and a lower discharge chamber (b). A flue gas desulfurization and denitrification method in which the device is used comprises a desulfurization and denitrification step and an activated carbon stripping step.

IPC Classes  ?

• B01D 53/04 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents

Abstract

A flue gas desulfurization and denitrification method and device. The device comprises an adsorption tower (T1) and an activated carbon regeneration tower (T3). An acid gas conveying pipeline (L3a) of the activated carbon regeneration tower (T3) is preheated by using heating gas of the activated carbon regeneration tower (T3), and the acid gas conveying pipeline (L3a) is purged after the regeneration operation is ended, so as to prevent the acid gas conveying pipeline (L3a) from being corroded.

IPC Classes  ?

• B01D 53/04 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents

Abstract

An activated carbon flue gas purification device, comprising an activated carbon adsorbing tower. The activated carbon adsorbing tower comprises a lower activated carbon bed layer portion (A), an upper activated carbon bed layer portion (B) and a transition region (C) disposed between these two portions. The activated carbon adsorbing tower also comprises a feeder (3) disposed on or at a top portion of the adsorbing tower, a flue gas inlet (1) disposed at a lower portion of the adsorbing tower and a flue gas outlet (2) disposed at an upper portion of the adsorbing tower, wherein a flue gas outflow end (G2) of the lower activated carbon bed layer portion (A) is connected to a flue gas inflow end (G3) of the upper activated carbon bed layer portion (B) through a flue gas channel (5). The lower activated carbon bed layer portion (A) has 2-7 activated carbon chambers divided and thus formed by porous separator plates (4), and the activated carbon chambers disposed at the lower portion sequentially increase in thickness along a flue gas flow direction. The upper activated carbon bed layer portion (B) has 2-7 activated carbon chambers divided and thus formed by porous separator plates (4), and the activated carbon chambers disposed at the upper portion sequentially increase in thickness along a flue gas flow direction.

IPC Classes  ?

• B01D 53/04 - Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours

Abstract

Disclosed is a trolley bearing beam, comprising a front lateral plate (31), a rear lateral plate (32), a front vertical plate (33) and a rear vertical plate (34), wherein the front lateral plate (31) and the rear lateral plate (32) are respectively arranged tilted towards the two sides, and an upper edge of the front lateral plate (31) and an upper edge of the rear lateral plate (32) are fixedly connected, a front lateral ventilation grate plate (311) being provided on the front lateral plate (31); the front vertical plate (33) and the rear vertical plate (34) are located below the front lateral plate (31) and the rear lateral plate (32), and are respectively fixedly connected to the front lateral plate (31) and the rear lateral plate (32) to form a whole structure; a sealed space (35) with no through flow to a cooling air passage is formed between the front vertical plate (33) and the rear vertical plate (34); and a lower edge of the front lateral plate (31) and a lower edge of the rear lateral plate (32) respectively extend out of the front vertical plate (33) and the rear vertical plate (34), the upper edges of both being located in front of the vertical median plane of the sealed space (35). By means of optimised improvements to the structure, the trolley bearing beam has the advantages of a simple structure and a relatively light dead-weight, and a better space for piling ore material can be acquired, ensuring that the production efficiency of the circular cooler is effectively increased. On this basis, a circular cooler using this trolley bearing beam is further provided.

IPC Classes  ?

• F27D 15/02 - Cooling

Abstract

Provided are a trolley air inlet pipe (41) of an annular cooler, the annular cooler using the trolley air inlet pipe (41) and a cooling air transfer system thereof. The trolley air inlet pipe (41) of the annular cooler is used for connecting a trolley air inlet (42) with an air outlet (43) of a door-shaped sealing device. A ventilating valve is arranged on the trolley air inlet pipe (41) to control the on or off state of the trolley air inlet pipe (41). The atmosphere short circuit problem of the annular air channel in non-cooling region can be avoided and reliable delivery of cooling air to the trolley in cooling region can be ensured.

IPC Classes  ?

• F27D 15/02 - Cooling

Abstract

A method and a system for predicting a burn-through point. The method comprises: detecting the air quantity of each air box (6), and detecting smoke components of a big flue (7); calculating the effective air rate of each air box (6) according to the detected smoke components; calculating the effective air quantity of each air box (6); determining the vertical sintering speed of a material layer at the position of each air box (6); obtaining the trolley speed of a sintering trolley (5), the air box (6) length and the material-layer thickness; and determining the position of the burn-through point by using the trolley speed, the air box (6) length and the vertical sintering speed. In the method, by analyzing the air quantity and the smoke components in a material sintering process, it can be accurately predicted that the air box position where the thickness of a sintered ore layer is equal to the material-layer thickness is the position of the burn-through point.

IPC Classes  ?

• C22B 1/20 - Sintering; Agglomerating in sintering machines with movable grates
• F27B 21/14 - Arrangement of controlling, monitoring, alarm or like devices

Abstract

A frequency change control method for a main exhaust fan of a sintering system comprises: (1) obtaining sintered material quantity; (2) calculating the vertical sintering speed of a material layer by using the sintered material quantity and a preset burn-through point, and calculating effective large flue air quantity by using a relationship between the vertical sintering speed and effective air quantity; (3) detecting smoke components of a large flue; (4) calculating an effective air rate by using the smoke components of the large flue, and calculating target large flue air quantity; (5) by using the corresponding relationship between the large flue air quantity and the main exhaust fan rotation speed, searching for target main exhaust fan rotation speed corresponding to the target large flue air quantity; and (6) regulating the current main exhaust fan frequency to the target main exhaust fan frequency corresponding to the target main exhaust fan rotation speed. A frequency change control system for the main exhaust fan of the sintering system can reduce the consumption and loss of electricity of the sintering system as the result of the mismatching between the power provided in the operation of the main exhaust fan and the system load.

IPC Classes  ?

• F27B 21/14 - Arrangement of controlling, monitoring, alarm or like devices

Abstract

A method and a system for controlling air quantity of an air box of a sintering trolley. A valve is disposed on each air box of the sintering trolley. The method comprises: acquiring air quantity data of a specified air box of the sintering trolley; adjusting a valve opening degree of another air box according to the air quantity data of the specified air box and a relationship between the air quantity of each air box in a database and the valve opening degree of a corresponding valve, so as to enable the air quantity of another air box to be consistent with the air quantity of the first specified air box. Because the actual air quantity in the air box is consistent with required air quantity as far as possible, and therefore, the situation is avoided that the proportion of the effective air in the air box is gradually decreased, thereby greatly decreasing air waste and more effectively saving energy sources. By means of the method, it can be ensured that the vertical sintering speed is not excessively high, and the invalid air quantity is decreased when the sintering ore quality is ensured.

IPC Classes  ?

• F27B 21/00 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
• F27B 21/14 - Arrangement of controlling, monitoring, alarm or like devices

Abstract

A method for controlling a main exhaust fan and a system for implementing the control method. The method comprises: obtaining air quantity of a large flue needed by normal sintering; obtaining the needed total negative pressure of the main exhaust fan by obtaining, by using multiple databases, a needed negative pressure of the large flue, a negative pressure needed to be consumed in a pipeline and a negative pressure needed to be consumed on an air door; and finally, controlling the main exhaust fan according to the total needed negative pressure of the main exhaust fan. By means of the method and the system thereof, the main exhaust fan can be controlled to only provide a negative pressure and air quantity for ensuring the demand of normal sintering, so that waste caused by an excessive air quantity is avoided, thereby achieving the purpose of saving energy.

IPC Classes  ?

• F27B 21/14 - Arrangement of controlling, monitoring, alarm or like devices

Abstract

A sintering control method and system. The method comprises: detecting a current position of a burn-through point of a sintering trolley operating at a preset speed; determining a relationship between the current position of the burn-through point and a first preset position N and a relationship between the current position of the burn-through point and a second preset position M, [N, M] being an ideal position range of the burn-through point of the sintering trolley; when the current position of the burn-through point is less than N, reducing air quantity of a large flue or reducing a negative pressure of the large flue ; and when the current position of the burn-through point is greater than M, increasing air quantity of the large flue or increasing the negative pressure of the large flue. In the method, the generation of ineffective negative pressure and ineffective air quantity in the sintering process is reduced, and electric power consumed by a main exhaust fan is saved, thereby avoiding adverse effects of the speed regulation of the trolley on the stability of the material flow quality and the control of the follow-up working procedure.

IPC Classes  ?

• F27B 21/14 - Arrangement of controlling, monitoring, alarm or like devices

Abstract

A hanger device (50) and an annular cooler having same, the hanger device (50) comprising a hanger fastener (51) and four connecting pieces (52, 53, 54, 55) disposed in sequence from top to bottom; the upper end of the first connecting piece (52) is hinge-connected to the hanger fastener (51); between the opposing ends of the second connecting piece (53) and the first connecting piece (52) is a first threaded fit; the opposing ends of the third connecting piece (54) and of the second connecting piece (53) are nested together, and between the two opposing ends is allowed a vertical relative displacement with mating lower-stop limiting units (E); between the opposing ends of the fourth connecting piece (55) and the third connecting piece (54) is a second threaded fit, the lower end of the fourth connecting piece (55) being used to hinge-connect to a gate-type sealing device (60); and the sum of the vertical unscrewed lengths of the first threaded fit and the second threaded fit is greater than or equal to a vertical preset distance (L); the minimum vertical relative displacement between the third connecting piece (54) and the second connecting piece (53) enables both the first connecting piece (52) and the fourth connecting piece (55) to rotate around respective hinge points. The hanger device (50) has improved operability for installation and adjustment.

IPC Classes  ?

• F27D 15/02 - Cooling
• F16L 3/00 - Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets

Abstract

A circular air duct end sealing transition region anti-liquid wave suppression device (2) includes: a flexible sealing inner baffle (232) located between an inner ring plate (231) of the anti-liquid wave suppression device and an inner ring plate (31) of a door shaped air channel, and a flexible sealing outer baffle (242) between an outer ring plate (241) of the anti-liquid wave suppression device and an outer ring plate (32) of the door shaped air channel. The flexible sealing inner baffle (232) and outer baffle (242) respectively contact with and move relatively to the inner ring plate (31) and the outer ring plate (32) of the door shaped air channel when the door shaped sealing device (3) is moved.

IPC Classes  ?

• F27D 15/02 - Cooling
• C22B 1/26 - Cooling of roasted, sintered, or agglomerated ores

Abstract

A liquid prevention and wave suppression device for use at a sealing transition region of an end part of a circular air duct is provided, which includes: an end plate (22) of the liquid prevention and wave suppression device which has the same height as an inner circular plate and an outer circular plate (44, 45) of an air duct of a circular flume, an inner circular plate and an outer circular plate (231, 241) of the liquid prevention and wave suppression device which has the same height as and connects to the end plate (22) of the liquid prevention and wave suppression device, an inner transition plate (211) of the liquid prevention and wave suppression device which connects to the inner circular plate (231) of the liquid prevention and wave suppression device and the inner circular plate (44) of the air duct of the circular flume, an outer transition plate (212) of the liquid prevention and wave suppression device which connects to the outer circular plate (241) of the liquid prevention and wave suppression device and the outer circular plate (45) of the air duct of the circular flume. The end plate (22) of the liquid prevention and wave suppression device is arranged on a near side of an end sealing device (1) of the circular air duct and adjacent to it. The radial width of the end plate (22) of the liquid prevention and wave suppression device is greater than the distance between the inner circular plate and the outer circular plate (44, 45) of the air duct of the annular flume, and it is separated by a predetermined distance from an inner circular plate and an outer circular plate (31, 32) of a door-shaped air duct. When the door-shaped sealing device moves, a relative movement exists between the inner circular plate and the outer circular plate (231, 241) of the liquid prevention and wave suppression device and the inner circular plate and the outer circular plate (31, 32) of the door-shaped air duct. The liquid prevention and wave suppression device (2) can effectively prevent liquid at the sealing transition region of the end part of the circular air duct from entering a trolley with the wind.

IPC Classes  ?

• F27D 15/02 - Cooling
• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
• F27D 9/00 - Cooling of furnaces or of charges therein

Abstract

A circular air duct is continuously arranged in a whole circle and takes a gyration center of a trolley of a circular cooler as its center. The bottom of the circular air duct at a cooling area is provided with several air inlets of the circular air duct which are communicated with a plurality of air inlet branch pipes (5). The circular air duct is a passage between a circular flume (4) arranged in a whole circle and a door-shaped sealing device (3). The circular flume (4) at the cooling area comprises a bottom plate (41) of the flume, as well as an inner circular plate (44) of an air duct of the circular flume, an outer circular plate (45) of the air duct of the circular flume, an interior circular plate (42) of the flume and an exterior circular plate (43) of the flume fixed on the bottom plate (41) of the flume. The inner circular plate (44) of the air duct of the circular flume and the outer circular plate (45) of the air duct of the circular flume are positioned between the interior circular plate (42) of the flume and the exterior circular plate (43) of the flume. The circular flume (4) at a non-cooling area includes a bottom plate (41) of the flume, as well as an interior circular plate (42) of the flume and an exterior circular plate (43) of the flume fixed on the bottom plate (41) of the flume. End sealing bodies (1) of the circular air duct are provided at both ends of the non-cooling area. The circular air duct can ensure the effective sealing between the cooling area and the non-cooling area.

IPC Classes  ?

• F27D 15/02 - Cooling
• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
• F16J 15/16 - Sealings between relatively-moving surfaces

Abstract

An annular cooler comprises a trolley (11) of the annular cooler, an air inlet pipe (36) of the trolley connected to an inside sealing plate (14) of the trolley (11), and a door-shaped sealing device (35) connected to the air inlet pipe (36) of the trolley. The door-shaped sealing device (35) is suspended from a support beam (37) of the trolley (11) through a hanging -type mounting mechanism (40), so that the weight of the door-shaped sealing device (35) acts on the support beam (37) of the trolley.

IPC Classes  ?

• F27D 15/02 - Cooling
• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
• F27D 9/00 - Cooling of furnaces or of charges therein

Abstract

A floating device used for supporting a floating part is provided, which comprises two groups of lever sets (2, 3) and two groups of radial pulley blocks. Each group of lever set (2, 3) is equipped with a group of radial pulley block. Each group of lever set (2, 3) comprises at least two levers (202a, 202b, 302a, 302b) sharing a fulcrum shaft (201, 301), and the ends of the two levers (202a, 202b, 302a, 302b) at one side of the fulcrum shaft (201, 301) are provided with a group of radial pulley block. A first guide mechanism that restrains the radial pulley block from moving along the axes of the levers is provided on the ends of the two levers (202a, 202b, 302a, 302b) of each group of lever set (2, 3). A weight equalizer (207, 307) is applied to the other end of the levers, and the fulcrum shaft (201, 301) is fixed on a workbench or a track. The two groups of pulley blocks comprise at least three pulleys (208, 308). Each group of pulley block comprises a pulley supporting mechanism. The pulley supporting mechanism comprises a support main body (203, 303) with a second guide mechanism, a pulley supporting base (208a, 308a) which moves along the second guide mechanism and is used for supporting the pulleys (208, 308), and a first guide rod (204, 304) which is connected with one end of the pulley supporting base (208a, 308a) and moves along the first guide mechanism. An end sealing device of an annular air duct that ensures the end sealing of the annular air duct is also provided.

IPC Classes  ?

• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
• F27D 9/00 - Cooling of furnaces or of charges therein
• F27D 15/02 - Cooling

Abstract

A support beam of a trolley for an annular cooler is used for supporting the trolley of the annular cooler. The support beam comprises a rectangular beam (1) and a triangular beam (2) positioned above the rectangular beam (1). An upper flange plate of the rectangular beam (1) used as a baseboard (21) of the triangular beam extends toward two sides and is broadened. Vent holes (21a) are provided in the extension and broadened part of the upper flange plate of the rectangular beam (1). Two side plates (22) of the triangular beam are adjacent to the baseboard (21) of the triangular beam, and several through holes (22a) are arranged in the two side plate (22) of the triangular. Furthermore, two solid plates (51, 52) that are obliquely jointed are arranged on the upper flange plate of the rectangular beam (1). The solid plates (51, 52) and the upper flange plate form an inner triangular beam (5), and an inclination angle of two solid plates (51, 52) is no less than a repose angle of cooled mineral materials.

IPC Classes  ?

• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus

Abstract

A trolley (21) of an annular cooler is disclosed. The trolley (21) of the annular cooler has a double layer structure, and the upper layer is a comb plate for ventilation and the lower layer is a lower plate (22) of the trolley. Four edges of the lower plate (22) of the trolley extend to a static sealing range involved by a rear support plate (23) of a front-positioned support beam (27), an inner sealing plate (24) of the trolley, a front support plate (25) of a rear-positioned support beam (28) and an outer sealing plate (26) of the trolley in turn. The annular length of the lower plate (22) of the trolley is greater than the distance between the rear support plate (23) of the front-positioned support beam (27) and the front support plate (25) of the rear-positioned support beam (28), and the radial length thereof is greater than the distance between the inner sealing plate (24) of the trolley and the outer sealing plate (26) of the trolley.

IPC Classes  ?

• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
• F27D 9/00 - Cooling of furnaces or of charges therein
• F27D 15/02 - Cooling

Abstract

An annular cooler comprises an annular cooling hood (31) which is hanged on a bracket (40) of the annular cooler (30), and a trolley (32) which rotates around the center of the annular cooler (30); an internal annular flume (36) and a external annular flume (37) are mounted on the inner side of an internal sideboard (34) and the outer side of an external sideboard (35) of the trolley (32) respectively; the lower ends of an internal plate (38) and an external plate (39) of the annular cooling hood (31) are respectively inserted below the liquid levels of the internal annular flume (36) and the external annular flume (37) without touching the bottoms of the flumes.

IPC Classes  ?

• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus

Abstract

An annular air duct end sealing body is disclosed, which comprises a sealing main body (1) arranged on the bottom of an annular flume (5), and a sealing member (2) which is assembled with the sealing main body (1) and has the same height as the sealing main body (1), wherein the sealing main body (1) is positioned between an inner sealing plate (41) and an outer sealing plate (42) of a portal type sealing device and comprises a main body top plate (11) and four lateral plates (12, 13), the radial dimension and the transverse dimension of the main body top plate (11) are respectively larger than the radial dimension and the transverse dimension of a through hole of a cover plate of the portal type sealing device, and the four lateral plates (12, 13) have the same height, and when the cover plate of the portal type sealing device moves to the upper part of the sealing body, the main body top plate (11) and the cover plate of the portal type sealing device contact with each other and are relatively moved, and the sealing member (2) and the inner sealing plate (41) and the outer sealing plate (42) of the portal type sealing device contact with each other and are relatively moved.

IPC Classes  ?

• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus

Abstract

A sealing member comprises two bugles (1) integrated with each other, wherein the length of each bugle is equal to the length of a plane or a cambered surface or a curved surface of a component that requires sealing. The sealing member is made of elastic sealing material. A cross section of each bugle is n-shaped. An integrated connecting portion (3) is provided between two adjacent bugles. Two outermost bugles are respectively connected with an integrated extending portion (2). A cushion block (4) is provided below the connecting portions and/or the extending portions. A groove (5) is provided at a lower side opposite to the bulges. The sealing member ensures sealing effect between the planes or cambered surfaces or curved surfaces of the component that requires sealing.

IPC Classes  ?

• F16J 15/06 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces

Abstract

A circular cooler air intake system comprises an annular wind pipe (31), a branch wind pipe (32) is connected with the annular wind pipe (31), the branch wind pipe (32) is connected to an annular air channel (33), the outlet of the annular air channel (33) is connected with trolley air intake pipe (36), the trolley air intake pipe (36) is connected with a trolley (37); the annular air channel is composed of an annular flume (34) and a door-shaped sealing device (35), the door-shaped sealing device (35) is connected to the trolley air intake pipe (36), a sealing cover board (351) of the door-shaped sealing device (35) is covered on an annular flume (34); an inner annular plate (341) of the annular air channel flume and an outer annular plate (342) of the annular air channel flume are in double-layer wall sleeve structure in a high-temperature region of a circular cooler. The system prevents the liquid in the annular water tank from vaporization, thus ensuring normal work of the circular cooler during the process of recycling hot flue gas of the circular cooler.

IPC Classes  ?

• F27D 15/02 - Cooling

Abstract

A method for reusing flue gas of circular cooler comprises the steps of collecting middle temperature flue gas discharged from a middle temperature region Ⅱ of a circular cooler (30) as cooling wind in a high temperature region Ⅰ of the circular cooler (30), and then collecting high temperature flue gas discharged from a high temperature region Ⅰ for reuse. A system for reusing flue gas of circular cooler comprises a circular cooler’s hood, which is arranged above the flue gas exhaust pipeline in the middle temperature region Ⅱ of the circular cooler (30) and used for collecting the flue gas, a front wind pipe (32) and a back wind pipe (31) which are respectively communicated with the circular cooler’s hood and the cooling wind pipe (35) in the high temperature region Ⅰ of the circular cooler (30), and a circulating fan (33) which is mounted between the front wind pipe (32) and the back wind pipe (31). A circular cooler collects middle temperature flue gas discharged from a middle temperature region Ⅱ of a circular cooler (30), and the part of the middle temperature flue gas is used as the cooling wind in a high temperature region Ⅰ of the circular cooler (30). After the middle temperature flue gas self with a certain temperature heat exchanging with high-temperature materials, it discharges high temperature flue gas with very high temperature, and then the part of high temperature flue gas is collected and reused for generating electricity, boiling water, and the like, thus effectively improving the efficiency of the flue gas reuse.

IPC Classes  ?

• F27D 17/00 - Arrangement for using waste heat; Arrangement for using, or disposing of, waste gases
• F27D 15/02 - Cooling

Abstract

An air duct seal plate for circularly cooling machine is disclosed, the air duct seal plate is connected with an air supply system. The air duct seal plate includes the air pipe (1) connected with the air supply system and an air grid (2) arranged on the port of the air pipe (1). The bottom of the air pipe (1) has an inclined plate (11) inclining upward from the air pipe (1) port and a horizontal plate (12) connected with the inclined plate (11). When using the anti-blocking material air duct seal plate for the circularly cooling machine during the discharging of the pallet, big lump materials caught by the air grid (2) can not enter into the air pipe (1), and small lump materials which have a lower fallen speed can fall on the surface of the inclined plate (11) rather than be thrown horizontally on the horizontal plate (12) of the air pipe (11) and then slide through the surface of the inclined plate (11) into the chute. The air duct seal plate for circularly cooling machine can not only satisfy the request of ventilation but also can prevent material from blocking the air vent, and ensure the normal operation of circularly cooling machine.

IPC Classes  ?

• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
• F27D 9/00 - Cooling of furnaces or of charges therein
• F27D 15/02 - Cooling

Abstract

A water seal device (13) for circularly cooling machine air duct includes an annular flume (131) surrounding the air duct and a cover plate (132) installed on the annular flume (131) which has a gantry cross-section in radial direction. A side plate (133) extends into the annular flume (131) from the cover plate (132) and separates the annular flume (131) into an inner annular flume (134) and an outer annular flume (135). The inner and outer annular flumes (134,135) connect with the air duct and ambient air respectively. Obstacles for preventing vibration of water surface are installed in the annular flume (131). The obstacles can be lightweight objects (20) floating on the water surface and also can be several dampers (21) installed on the external side wall (135A) of the outer annular flume (135). The water seal device (13) can release the vibration amplitude of the water surface and ensure normal operation of the circularly cooling machine when air current changed in the air duct.

IPC Classes  ?

• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
• F27D 9/00 - Cooling of furnaces or of charges therein
• F27D 15/02 - Cooling

Abstract

A circular cooling machine involves trolley(10), sealing unit and air duct device. The trolley(10) is composed of removable inner sealing plate(13) and outer sealing plate(14), grid plate(15) is arranged between inner sealing plate(13) and outer sealing plate(14), the trolley(10) is divided into discharge layer and ventilation layer by the grid plate(15), and one side of the ventilation layer is connected fixedly with movable air duct(18). The sealing unit is arranged on said trolley(10) and includes sealing devices which are respectively situated between inner sealing plate(13) and bottom flat(46), between outer sealing plate(14) and bottom flat(46), between left support beam(301) of allotypic beam(3) and bottom flat(46), and between right support beam(302) of allotypic beam(3) and bottom flat(46). This trolley(10) improves the sealing performance and assures the cooling effect.

IPC Classes  ?

• C22B 1/26 - Cooling of roasted, sintered, or agglomerated ores
• F27D 15/02 - Cooling
• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus

Abstract

A sealing unit for sealing circularly cooling machine pallet (10) includes sealing devices for preventing cold air leakage. The sealing devices are separately installed on the positions of the bottom lower plate (12) of pallet (10) which contact with the inner and outer side sealing walls (13, 14) and the left and right support beams (31, 32) of special-shaped beam (30) of the pallet (10). The sealing devices installed on the position of the bottom lower plate (12) which contact with the inner and outer sealing walls (13,14) and the left support beam (31,32) of special-shaped beam (30) are the first sealing device (20). And the first sealing device (20) has a crossbeam (24) and a support (23) which are connected with each other in right angle. An elastic sealing member (33) is fixedly installed outside of the support (23). The lower end of the sealing member (33) clings to the bottom lower plate (12). The height of sealing member (33) is slightly larger than the height of the lower end of the support (23) to the crossbeam (24). A circularly cooling machine is also provided. The sealing unit can prevent the dispersed material from abrading and burning the sealing device, assure the sealing performance and improve the cooling effect of material.

IPC Classes  ?

• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
• F27D 9/00 - Cooling of furnaces or of charges therein
• F27D 15/02 - Cooling
• F16J 15/02 - Sealings between relatively-stationary surfaces

Abstract

A supporting beam for annular cooler trolleys is disclosed. The supporting beam, which is used for supporting annular cooler trolleys, includes a rectangular beam (1) and a triangular beam (2) above the rectangular beam (1). An upper wing plate of the rectangular beam ( 1 ) extended to both sides and widened is used as a bottom plate (21 ) of the triangular beam, and the place extended to both sides and widened of the upper wing plate of the rectangular beam (1) is provided with air vents (21a). Two side plates (22) of the triangular beam, which abut on the bottom plate (21) of the triangular beam, are provided with multiple through holes (22a). The supporting beam for annular cooler trolleys is used for improving the cooling effect of the mineral material above the supporting beam.

IPC Classes  ?

• F27D 15/02 - Cooling
• F27B 21/08 - Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction - Details, accessories, or equipment peculiar to sintering or like apparatus
• F27D 9/00 - Cooling of furnaces or of charges therein

Abstract

A rotary kiln includes a drum (1), a heat insulating layer (2) and a lining, in which, the lining comprises refractory bricks (3) fixed onto the drum by anchors (4), hook holes (31) and hook concaves (32) are respectively arranged in two junction planes, whose mounting positions are coordinate to the axis of the drum, one end of each anchor (4) is provided with two hooks to be inserted into the hook holes of two adjacent refractory bricks, the other end of the anchor (4) is provided with a welding body (42) to be welded on the drum (1), and a peripheral joint between the refractory bricks (3) is sealed with a castable material( 5) or a joint brick.

IPC Classes  ?

• F27B 7/28 - Arrangements of linings
• F27D 1/10 - Monolithic linings; Supports therefor
• F27D 1/14 - Supports for linings
• F27D 1/04 - Casings; Linings; Walls; Roofs characterised by the form of the bricks or blocks used