A metallurgical processing assembly, such as a steelmaking converter, comprising: – a vessel; - a rod moving jointly with the vessel, in particular with radial deformation of the vessel; - a reference surface with a position independent from radial movement by the vessel; - a distance measuring unit configured to measure displacement of the rod relative to the reference surface. In a specific embodiment, movement of the rod is augmented by a pantograph mechanism and transmitted to movement by a slider contact of a variable resistor, allowing remote measurement of the changed resistance.
Plant and process for the reduction of NOx emission from the combustion of blast furnace gas. The blast furnace gas passes a hydrolysis reactor (11, 25, 36), such as a radial flow reactor, with a catalytic bed for the hydrolysis of HCN. Subsequently, the blast furnace gas is scrubbed with a scrubber medium for ammonia, such as an absorbent, e.g., water or an adsorbent, e.g., activated carbon.
C10K 1/12 - Purifying combustible gases containing carbon monoxide by washing with liquidsReviving the used wash liquors with aqueous liquids alkaline-reacting
Blast furnace plant (1) and shutdown process for such a blast furnace plant (1). The blast furnace plant comprises a blast furnace (2) and a gas cleaning section (6) for cleaning gas from the blast furnace. Clean gas is released via a clean gas vent line (11) downstream of the gas cleaning section.
The present invention relates to a blowing or re-blowing process of a blast furnace, and blast furnace equipment for same. The present invention relates to a blowing or re-blowing process of a blast furnace, the process including the blast furnace and a gas purification section for purifying gas from the blast furnace, and provides a blowing or re-blowing process of a blast furnace, and blast furnace equipment for same, which: close a breather valve, and purge nitrogen and steam from a blast furnace and a gas purification section to generate, toward a clean gas vent line provided at the downstream side of the gas purification section, a flow of air remaining in an uptake, a downcomer and a clean gas transport line of the blast furnace; purify, into a clean gas state through the gas purification section, blast furnace gas generated by the operation or re-operation of the blast furnace, so as to discharge same through the clean gas vent line; and open a clean gas cut-off valve for clean gas transported to a gas holder through the clean gas transport line and close the clean gas vent line, if the pressure of the clean gas transport line exceeds the pressure of the gas holder while the clean gas is discharged through the clean gas vent line.
Blast furnace plant (1) and shutdown process for such a blast furnace plant (1). The blast furnace plant comprises a blast furnace (2) and a gas cleaning section (6) for cleaning gas from the blast furnace. Clean gas is released via a clean gas vent line (11) downstream of the gas cleaning section.
Blast furnace plant (1) and shutdown process for such a blast furnace plant (1). The blast furnace plant comprises a blast furnace (2) and a gas cleaning section (6) for cleaning gas from the blast furnace. Clean gas is released via a clean gas vent line (11) downstream of the gas cleaning section.
A process and a plant for cleaning furnace gas includes utilizing one or more sensors to continuously monitor one or more parameters indicative for an expected temperature peak in the blast furnace gas flow. The gas flow is then passed through a conditioning tower. In case the measured parameter exceeds a predefined limit value, a coolant, such as water, is sprayed into the blast furnace gas flow in the conditioning tower. Subsequently the flow of blast furnace gas passes one or more filter stations.
A TOP CHARGING APPARATUS FOR CHARGING MATERIAL IN A BLAST FURNACE AND A METHOD FOR OPENING AND CLOSING A BOTTOM OPENING OF A HOPPER OF A BLAST FURNACE TOP CHARGING APPARATUS
A top charging apparatus (1) for charging material in a blast furnace comprising a material hopper (2) having a top opening (3) and a bottom opening (4) defining a longitudinal axis (X); a closing/opening device for closing or opening said bottom opening (4); wherein said closing/opening device comprises a seal valve (5); at least one handling lever (6), connected to said seal valve (5), for moving the seal valve (5) from a closing position to a maximum opening position, or vice versa; a first rotation shaft (14), connected to at least one first part of the handling lever (6), for actuating said handling lever (6); a second rotation shaft (16), connected to at least one second part of the handling lever (6), for actuating said handling lever (6); wherein the first rotation shaft (14) and the second rotation shaft (16) have axes of rotation (Y, Y') arranged parallel from one another and perpendicular to a first plane containing the longitudinal axis (X); and wherein the seal valve (5) in said maximum opening position intersects a second plane (A), defined by the axes of rotation (Y, Y') of first rotation shaft (14) and second rotation shaft (16), in an intermediate position between said axes of rotation.
A process and a device for treating a flow of furnace gas with a pressure of more than 1 bar flowing through a channel. A powder agent, such as a powder comprising alkali reagents, such as lime, and/or absorbents, such as activated coal, is injected under an overpressure into the furnace gas flow via an injector which is positioned centrally within the channel. The powder agent may be fluidized. The pressure for injecting the powder may be adjusted by controlling the volume of fluidization gas vented via a venting outlet.
B01D 53/12 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical 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 with dispersed adsorbents according to the "fluidised technique"
A bleeder valve (300) for controlling a gas outflow from the interior of a pressurized container (302) to an ambient atmosphere through an exhaust conduit (303) comprises: a valve seat (309) associated with said exhaust conduit (303), a movable lid (311) having a central closure portion (313) and a peripheral sealing surface (315) cooperating with said valve seat (309), and an actuating mechanism (316) connected to said lid (311) for moving said lid between a closed position on said valve seat and an open position distant from said valve seat. The lid comprises a deflection portion (317) at the periphery of said sealing surface. The deflection portion comprises a deflection surface (318) inclined relative to a tangent (Tsl) to said sealing surface (315) by an included angle (a) less than 180 degrees for imparting to a gas outflow passing between said valve seat (309) and said lid (311) a velocity component which is perpendicular or opposite to the initial opening movement of said lid. The central closure portion (313) is recessed with respect to said sealing surface (315).
Manipulator for moving a ladle for processing liquid steel, the manipulator comprising a frame with wheels movable along suspended rails, a gripper, such as a pair of parallel hooks, extending from a lower side of the frame, and a hook suspension with a drive for moving the hooks relative to the frame between a lower position and an upper position.
B66C 17/10 - Overhead travelling cranes comprising one or more substantially-horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports specially adapted for particular purposes, e.g. in foundries, forgesOverhead travelling cranes comprising one or more substantially-horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports combined with auxiliary apparatus serving particular purposes for transporting ladles
C21C 5/52 - Manufacture of steel in electric furnaces
C21C 7/00 - Treating molten ferrous alloys, e.g. steel, not covered by groups
F27B 14/08 - Details specially adapted for crucible, pot or tank furnaces
12.
FURNACE PLANT AND PROCESS FOR TREATING FURNACE GAS
Process and furnace plant for production of liquid metal. The furnace comprises an apparatus (1) for treatment of furnace gas. The apparatus comprises a wet scrubber, preferably a venturi scrubber (6), such as an air gap scrubber, with an outlet connected to a mist eliminator (7) comprising a non-swirling separating device (30, 36), for example a Sulzer Mellachevron™ and optionally a second non-swirling separating device comprising a knitmesh combined with a second Sulzer Mellachevron™. Optionally, the demister (7) may comprise an inlet diffuser, such as a vane-type inlet device, in particular a Shell Schoepentoeter™ (22).
A method of constructing a shaft furnace is provided, as well as an assembly and a fixation structure therefor. The method comprises the steps of providing on a first position a furnace segment comprising a ring wall extending along a central axis, and transporting the segment to a second position and operably attaching the segment there to one or more further blast furnace portions. The method further comprises that during said transporting the segment to the second position the segment comprises at least one fixation structure comprising a plurality of tensioned tensile members attached to the wall determining a shape of the segment.
The present disclosure relates to methods and a system (1) for converting iron to steel in a metallurgical container (3). A plurality of AC transmitting and receiving coils (11; 11T, 11R) is arranged in the walls (5) of the container (3) in different positions and orientations with respect to the container axis (A). A filling level (L1, L2) of an electrically conductive material and/or a dielectric material in the container (3) is determined on the basis of AC signal reception data.
G01F 23/26 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
A process and a device for treating a flow of furnace gas with a pressure of more than 1 bar flowing through a channel (3). A powder agent (2), such as a powder comprising alkali reagents, such as lime, and/or absorbents, such as activated coal, is injected under an overpressure into the furnace gas flow via an injector (6) which is positioned centrally within the channel. The powder agent may be fluidized. The pressure for injecting the powder may be adjusted by controlling the volume of fluidization gas vented via a venting outlet (24).
A process and a device for treating a flow of furnace gas with a pressure of more than 1 bar flowing through a channel (3). A powder agent (2), such as a powder comprising alkali reagents, such as lime, and/or absorbents, such as activated coal, is injected under an overpressure into the furnace gas flow via an injector (6) which is positioned centrally within the channel. The powder agent may be fluidized. The pressure for injecting the powder may be adjusted by controlling the volume of fluidization gas vented via a venting outlet (24).
Process and device for cleaning furnace gas. Flowing in a main flow direction (A) the furnace gas passes an array of bag filters (13). Filtered furnace gas having passed the filter bags, is partly returned via one or more nozzles (28) which are moved along downstream ends of the bag filters. Each bag filter (13) is passed at least once by at least one nozzle (28) during a cycle. A nozzle passing a bag filter blows filtered furnace gas in a backflow direction (B) through said bag filter. The backflow direction is opposite to the main flow direction.
Process and device for cleaning furnace gas. Flowing in a main flow direction (A) the furnace gas passes an array of bag filters (13). Filtered furnace gas having passed the filter bags, is partly returned via one or more nozzles (28) which are moved along downstream ends of the bag filters. Each bag filter (13) is passed at least once by at least one nozzle (28) during a cycle. A nozzle passing a bag filter blows filtered furnace gas in a backflow direction (B) through said bag filter. The backflow direction is opposite to the main flow direction.
A process and a plant for cleaning furnace gas. One or more sensors are used to continuously monitor one or more parameters indicative for an expected temperature peak in the blast furnace gas flow. The gas flow is then passed through a conditioning tower. In case the measured parameter exceeds a predefined limit value, a coolant, such as water, is sprayed into the blast furnace gas flow in the conditioning tower. Subsequently the flow of blast furnace gas passes one or more filter stations.
A process and a plant for cleaning furnace gas. One or more sensors are used to continuously monitor one or more parameters indicative for an expected temperature peak in the blast furnace gas flow. The gas flow is then passed through a conditioning tower. In case the measured parameter exceeds a predefined limit value, a coolant, such as water, is sprayed into the blast furnace gas flow in the conditioning tower. Subsequently the flow of blast furnace gas passes one or more filter stations.
A delivery device for delivering filler material into a blast furnace, comprising: - a housing provided with a transition channel (1) for the filler material which defines a first axis X; - a chute (25) for the filler material arranged underneath said transition channel (1); - first actuating means (2), defining a respective second axis A parallel to the first axis X, to actuate a tilt of the chute (25) with respect to the first axis X; - second actuating means (3), defining a respective third axis B parallel to the first axis X, to actuate a rotation of the chute (25) about said first axis X; - a first annular body (8) inside said housing and coaxial to the first axis X, adapted to translate along the first axis X by means of said first actuating means; - a second annular body (7) inside said housing and coaxial to said first axis X, adapted to translate along the first axis X being coupled to the first annular body (8) and/or adapted to rotate about the first axis X by means of said second actuating means; - a mechanism (10) coupled to the second annular body (7) and to the chute (25), adapted to convert a translational motion of the second annular body (7) into a tilting movement of the chute (25) with respect to the first axis X, and adapted to convert a rotation motion of the second annular body (7) into a rotation movement of the chute (25) with respect to the first axis X.
Gas treatment device for treating a gas flow, comprising a vessel ( 2, 72} with: • a first compartment (3, 73) comprising an inlet for the gas flow to be treated and a stack of granulate beds (23, 77) holding a granulate material; • a second compartment (4, 74) for the discharge of clean gas; • a third compartment (5, 75) for the supply of a purging gas, The second and third compartments are at opposite sides of the first compartment. The granulate beds (23, 77) comprise a gas permeable top surface (33) supporting the granulate material and a clean gas collection box (31) below the gas permeable top surface having one or more clean gas exit openings (34) connecting to the second compartment.
B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
B01D 46/30 - Particle separators, e.g. dust precipitators, using loose filtering material
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical 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
23.
APPARATUS AND METHOD FOR CONDITIONED REMOVAL OF GASES
An apparatus (1) is disclosed for the removal of gasses from electrolysis cells (3) by suction comprising a branch duct (5) for each electrolysis cell, a ductwork (4) connecting the branch ducts to a gas treatment centre (9), a central suction fan (11) providing a gas flow in the ducts, and a heat exchanger (15) arranged in the gas flow. The heat exchanger comprises one or more heat exchanger elements (17) in at least one of the branch ducts and the ductwork. One or more of the heat exchanger elements are removably arranged in the at least one of the branch ducts and the ductwork and/or the heat exchanger comprises a plate heat exchanger (15) comprising one or more heat exchanger plates (17).
A method of conditioning particulate material (M) and/or a gas, comprising the steps of: feeding an amount of particulate material up to a filling level (L) into in an inner volume (V) of a silo (3) having silo walls (5), a gas inlet (13) and a gas outlet (11), and generating a gas flow (F) of a gas from the gas inlet (13) through the particulate material to the gas outlet (11) which comprises applying suction to the inner volume (V) of the silo (3) through the gas outlet (11), wherein the gas outlet (11) is located in a silo wall (5) below the filling level (L) and covered by the particulate material. A system for conditioning particulate material (M) and/or a gas.
F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
B01J 8/12 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with moving particles moved by gravity in a downward flow
The invention relates to a device for taking slag samples from a converter or other container with molten metal and slag, the device having a sample chamber for receiving a slag sample with an inlet opening and a slag cooling element, wherein the slag cooling element extends from the inlet opening into the sample chamber over at least half the length of the sample chamber.
The invention concerns an apparatus and. a method for the removal of gasses from electrolysis cells (21) by suction, the apparatus comprising a branch duct (3) for each electrolysis cell, a main duct (4) connecting the branch ducts to a gas treatment centre (5) and a central suction fan (6) providing for at least part of the suction, wherein one or more of the branch ducts are provided with supplementary suction means (8) and wherein control means (9) to control the supplementary suction means and pressure monitor means (11) are provided, wherein the control means are adapted to control the supplementary suction means in dependence from changes in the monitored pressure with respect to a reference pressure.
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
45 - Legal and security services; personal services for individuals.
Goods & Services
Technological advice to companies in the field of the
production and first processing of iron, steel and
aluminium. Scientific and industrial services; planning and advice in
the construction, architecture and operation of industrial
installations; services of chemists, engineers and
physicists; services provided by chemical and physical
laboratories; computer programming; consulting by technical
experts, engineers and scientists; materials testing. Research in matters of legislation and industrial legal
protection; giving technological advice; technical and legal
research in matters of intellectual property law; copyright
handling; exploitation of intellectual property.
