APPARATUS FOR DISPOSING OF WASTE LIQUID GENERATED IN LOW/INTERMEDIATE-LEVEL RADIOACTIVE WASTE CARBONIZATION SYSTEM USING LOW-PRESSURE SUPERHEATED STEAM
The present invention relates to a system for carbonizing low/intermediate-level radioactive wastes by using low-pressure superheated steam so as to reduce the volume thereof, and provides a low/intermediate-level radioactive waste carbonization system using low-pressure superheated steam, the system comprising: supply equipment for crushing, by means of a crusher, the low/intermediate-level radioactive wastes generated in a nuclear power plant and then supplying the same to a carbonization furnace; carbonization equipment for directly spraying the low-pressure superheated steam to the low/intermediate-level radioactive wastes so as to carbonize the same, then separate the same into carbonization byproducts and carbonized gas, and respectively discharge the same to a carbonization byproduct tank and a blower; heat source equipment having a saturated steam generator for producing the superheated steam and supplying the same to the carbonization furnace and a reheated steam generator, the multi-stage reheated steam generator for reheating the saturated steam generated in the saturated steam generator, so as to produce reheated steam of the predetermined temperature, and supply the same to the carbonization furnace, and the blower for supplying, to the reheated steam generator, circulating steam discharged from the carbonization furnace and the saturated steam produced in the saturated steam generator; cooling equipment for cooling, by means of air-cooled heat exchange, the high-temperature carbonized gas which has been generated and separated in the carbonization furnace; cleaning equipment for spraying cleaning liquid to the carbonized gas cooled in the cooling equipment, so as to separate, by means of droplets, liquid membranes, and bubbles, dust contained in the cooling equipment and collect the same; dehumidification equipment for removing moisture which is included in the carbonized gas having passed through the cleaning equipment and the heat generated in the cooling equipment due to heat exchange; and white smoke reduction equipment for removing, by means of HEPA filters provided in multiple stages, particulate matters and radioactive substances included in the carbonized gas from which the moisture has been removed in the dehumidification equipment, mixing the gas having passed through the cooling equipment and the gas having passed through the HEPA filters, and finally discharging the mixture thereof into the atmosphere.
The present invention relates to a system for carbonizing medium- and low-level radioactive waste using superheated vapor at low pressure to reduce same, and comprises: supply equipment for crushing medium- and low-level radioactive waste produced from a nuclear power plant using a crusher and supplying same into a carbonization furnace; carbonization equipment for directly injecting superheated vapor at low pressure supplied from a reheat vapor generator on the medium- and low-level radioactive waste to carbonize same, and then separating carbonization byproducts and carbonization gas and discharging same to a carbonization byproduct tank and a blower, respectively; heat source equipment provided with a saturated vapor generator for generating superheated vapor and supplying same to the carbonization furnace and the reheat vapor generator, a multistep reheat vapor generator for reheating saturated vapor generated from the saturated vapor generator and supplying same to the carbonization furnace, and the blower for supplying circulating vapor and saturated vapor to the reheat vapor generator; cooling equipment for cooling carbonized gas at high temperature that is generated and separated from the carbonization furnace by means of air-cooled heat exchange; cleansing equipment for spraying a cleansing liquid on the carbonized gas which has been cooled by the cooling equipment to separate and capture dust contained in the carbonized gas through liquid drops, liquid film, and bubbles; dehumidifying equipment for eliminating moisture contained in heat generated from the carbonized gas which has passed through the cleansing equipment and from heat exchange in the cooling equipment; and white smoke reducing equipment for eliminating particulate material and radioactive material included in the carbonized gas from which moisture has been removed by the dehumidifying equipment, by using a HEPA filter installed in multi-steps, and mixing and finally releasing into the atmosphere gas which has passed through the cooling equipment and gas which has passed through the HEPA filter.
B09B 3/00 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif
B09B 5/00 - Opérations non couvertes par une seule autre sous-classe ou par un seul autre groupe de la présente sous-classe
3.
GRANULE-MOLDING AND SOLIDIFYING APPARATUS USING LOW-PRESSURE SUPERHEATED VAPOR FOR CARBONIZATION BYPRODUCT GENERATED FROM MEDIUM- AND LOW-LEVEL RADIOACTIVE WASTE CARBONIZING SYSTEM
The present invention relates to an apparatus using low-pressure superheated vapor for granularizing a carbonization byproduct generated from a medium- and low-level radioactive waste carbonizing system in granule-molding equipment, and then solidifying same in solidifying equipment, and comprises: the granule-molding equipment comprising a mixer for mixing and combining the carbonization byproduct generated from the medium- and low-level radioactive waste carbonizing system with a binder, a transporter for transporting mixed waste mixed in the mixer through an embedded screw, and a pellet machine for cutting, with a rotating cutter, the mixed waste that is injected through an injection port from the transporter while the mixed waste is discharged through a pellet-molding porous plate by means of rotation of a rotating roller; and the solidifying equipment comprising a polymer supply pump for pumping polymers from a polymer tank and supplying same to a polymer supply pipe, a hardening agent supply pump for pumping a hardening agent from a hardening agent tank and supplying same to a hardening agent supply pipe, a fill head assembly fixed on top of a fill head frame and connected to the polymer supply pipe and the hardening agent supply pipe, a drum fixed to the inside of the fill head frame and to the upper end of which the fill head assembly is coupled, the drum filled with pellets molded from the granule-molding equipment, and a vacuum pump installed on top of a supply skid frame and connected to the fill head assembly via a vacuum pipe.
The present invention: dries coal to a predetermined water content or less during the transfer, of coal, using a transfer device in a multistage dryer drying, by using reheat steam, coal to be used as fuel of a thermoelectric power plant, and prevents spontaneous combustion caused by the oxidation or ignition of coal during the transferring of coal, and thus the operation of a coal drying system is maximized; promotes an improvement in coal drying efficiency and safe transfer, and can solve environmental problems by minimizing the discharge of contaminants or pollutants capable of being generated during a drying process.
F26B 3/02 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air
F26B 21/06 - Commande, p. ex. régulation des paramètres de l'alimentation en gaz
F26B 21/10 - Commande, p. ex. régulation des paramètres de l'alimentation en gaz de la températureCommande, p. ex. régulation des paramètres de l'alimentation en gaz de la pression
F26B 21/12 - Commande, p. ex. régulation des paramètres de l'alimentation en gaz de la vitesse d'écoulementCommande, p. ex. régulation des paramètres de l'alimentation en gaz du débit
The present invention relates to a device configured such that, while sludge including sewage sludge processed by a terminal sewage treatment plant, for example, is transferred by a conveyor belt, reheater steam in a super-high-temperature, low pressure state is ejected to the sludge, thereby drying the sludge in a low-oxygen state, wherein sludge, which is transferred by a conveyor belt for drying, is repeatedly dispersed, flattened, and perforated, reheater steam in a super-high-temperature, low-pressure, low-oxygen state, which has been generated by a reheater steam generator, is ejected, thereby drying the sludge, and, since the heater steam does not oxidize the sludge, no atmosphere-polluting substance is discharged in the drying process. Furthermore, sludge, which has been discharged from a terminal sewage treatment plant, can be dried/processed with little pollution and can be recycled.
C02F 11/12 - Traitement des boues d'égoutDispositifs à cet effet par déshydratation, séchage ou épaississement
F26B 3/02 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air
F26B 17/04 - Machines ou appareils à mouvement progressif pour le séchage d'un matériau en vrac, à l'état plastique ou sous forme fluidisée, p. ex. granulés, fibres brutes le mouvement étant réalisé par des courroies entraînant le matériauMachines ou appareils à mouvement progressif pour le séchage d'un matériau en vrac, à l'état plastique ou sous forme fluidisée, p. ex. granulés, fibres brutes le mouvement étant réalisé par des courroies propulsant le matériau sur des surfaces fixes les courroies étant toutes horizontales ou légèrement inclinées
6.
SYSTEM FOR REDUCING VOLUME OF LOW-LEVEL RADIOACTIVE WASTES BY USING SUPERHEATED VAPOR
The present invention relates to a system for reducing a volume by using a superheated vapor generated from a superheated vapor generator, so as to carbonize and dry low-level radioactive wastes, the system comprising: a reheated vapor generator for generating the superheated vapor by heating mist sprayed from an atomizer, and then discharging the same to a vapor supply pipe; a drying furnace for carbonizing and drying the fed low-level radioactive wastes by primary vapor and the superheated vapor, which are supplied from the reheated vapor generator, and then cooling the carbonized and dried low-level radioactive wastes to a predetermined temperature; a heat exchanger for exchanging the heat of the vapor discharged from a vapor discharge pipe after the low-level radioactive wastes are carbonized and dried in the drying furnace, then supplying the heat-exchanged vapor to the reheated vapor generator through a vapor delivery pipe, discharging, to a condensate water delivery pipe, condensate water generated after the heat exchange of the discharged vapor, and supplying heat-exchanged cooling water to the drying furnace through a cooling water delivery pipe; and a cooling tower for cooling the cooling water, heat-exchanged in the heat exchanger and circulated in the drying furnace, and then delivering the same to the heat exchanger again.
The present invention relates to a dust reduction apparatus which minimizes dust generation when coal is dropped and supplied from an upper dryer to a lower dryer in a multi-stage dryer for drying coal using reheat steam. The present invention relates to a coal drying apparatus using reheat steam, the apparatus being configured so that coal which has been dried primarily in a first coal dryer is inputted into a second coal dryer and thus is secondarily dried. The apparatus comprises a fixed quantity coal supplier for supplying a fixed amount of coal onto the surface heading for the top of a first transfer plate, and comprises a dust reducer consisting of: an inlet pipe coupled by a bearing to a discharge port of the fixed quantity coal supplier; a worm wheel coupled to the outer circumferential surface of the inlet pipe; a worm which is coupled by a gear to the worm wheel and which rotates by means of rotational force delivered from a motor; a bent pipe having an upper end coupled to the inlet pipe; and an outlet pipe coupled to one end of the bent pipe. In addition, the apparatus comprises: a first flattening device for uniformly dispersing and flattening a coal pile which is transferred after being dropped and inputted from the dust reducer onto the surface heading for the top of an upper first transfer plate; a first coal receiver which has a plurality of panels fixedly installed therein radially at a certain angle about a rotation axis between a pair of first driven sprockets; a second flattening device for uniformly dispersing and flattening the coal pile which is transferred after being dropped and inputted from the first coal dryer to the surface heading for the top of a lower first transfer plate through rotation of the first driven sprockets; a third flattening device for uniformly dispersing and flattening the coal pile which is transferred after being dropped and inputted from the first coal dryer to the surface heading for the top of an upper second transfer plate of the second coal dryer; a second coal receiver which has a plurality of panels installed therein radially at a certain angle about a rotation axis between a pair of second driven sprockets; and a fourth flattening device for uniformly dispersing and flattening the coal pile which is dropped and inputted from the second coal receiver to the surface heading for the top of a lower second transfer plate through rotation of the second driven sprockets, wherein the first coal receiver receives the coal pile dropped from the surface of the upper first transfer plate, is rotated according to the rotation of the first driven sprockets, and thereafter inputs the coal pile onto the surface of the lower first transfer plate to thereby inhibit dust, and the second coal receiver receives the coal pile dropped from the surface of the upper second transfer plate, is rotated according to the rotation of the second driven sprockets and thereafter inputs the coal pile onto the surface of the lower second transfer plate to thereby inhibit dust.
F26B 3/06 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air le gaz ou la vapeur s'écoulant à travers le matériau ou les objets à sécher
F26B 25/00 - Parties constitutives d'application générale non couvertes par un des groupes ou
The present invention relates to an apparatus for improving, in a multi-stage dryer for drying coal using reheat steam, drying efficiency by controlling reheat steam so as to be injected at a certain pressure into coal which is inputted onto a transfer device and is transferred thereby. The present invention relates to an apparatus for drying coal using reheat steam, the apparatus being configured so that coal which has been dried primarily in a first coal dryer is inputted into a second coal dryer and thus is secondarily dried, wherein steam supply pipes for supplying reheat steam generated from a reheater are connected to one side of each of a first steam chamber, a second steam chamber, a third steam chamber and a fourth steam chamber, and wherein first steam distribution perforated plates, which have a plurality of first steam injection holes formed therethrough, are combinedly installed on the upper section of the inside of each of the first steam chamber, the second steam chamber, the third steam chamber and the fourth steam chamber so that reheat steam having a uniform pressure is injected through the first steam injection holes.
F26B 21/10 - Commande, p. ex. régulation des paramètres de l'alimentation en gaz de la températureCommande, p. ex. régulation des paramètres de l'alimentation en gaz de la pression
F26B 3/06 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air le gaz ou la vapeur s'écoulant à travers le matériau ou les objets à sécher
C10L 9/00 - Traitement des combustibles solides en vue d'améliorer leur combustion
9.
APPARATUS FOR REDUCING DUST OF INPUTTED COAL AND DISPERSEDLY SUPPLYING COAL IN APPARATUS FOR DRYING COAL USING REHEAT STEAM
The present invention relates to an apparatus for, in a multi-stage dryer for drying coal using reheat steam, minimizing occurrence of dust and dispersedly supplying coal to a transfer device when coal is supplied to the multi-stage dryer from a fixed quantity coal supplier by way of a pulverizer. The present invention relates to an apparatus for drying coal using reheat steam, the apparatus being configured so that coal which has been dried primarily in a first coal dryer is inputted into a second coal dryer and thus is secondarily dried. The apparatus comprises a fixed quantity coal supplier for supplying a fixed amount of coal onto the surface heading for the top of a first transfer plate, and comprises a dust reducer consisting of: an inlet pipe coupled by a bearing to a discharge port of the fixed quantity coal supplier; a worm wheel coupled to the outer circumferential surface of the inlet pipe; a worm which is coupled by a gear to the worm wheel and which rotates by a rotator power delivered from a motor; a bent pipe having an upper end coupled to the inlet pipe; and an outlet pipe coupled to one end of the bent pipe. The dust reducer, which rotates at a certain speed, reduces the speed of coal being supplied from the fixed quantity coal supplier, thereby minimizing dust occurrence from coal which is inputted into the surface heading for the top of the first transfer plate.
F26B 3/06 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air le gaz ou la vapeur s'écoulant à travers le matériau ou les objets à sécher
The present invention relates to an apparatus that reduces the load of a heap of coal, which is fed and transferred through a pulverizer from a coal quantitative feeder to a multi-stage drier for drying coal using reheat steam, and uniformly spreads and flattens the coal, thereby enhancing drying efficiency in the multi-stage drier. In a coal drying apparatus using reheat steam that is configured to feed coal, which is primarily dried in a first coal drier, to a second coal drier to secondarily dry the coal, the spreading and flattening apparatus comprises: column-shaped bodies installed at a predetermined interval above the upper surfaces of a plurality of first and second transfer plates; dividing protrusions that protrude from the central portions of the front sides of the bodies and divide a heap of coal, which is fed from a coal quantitative feeder to the upper surfaces of the first and second transfer plates, into halves to spread the coal in a left-right direction; and a pair of fixing members that are fixed to the upper ends of first and second guide rails that horizontally support the first transfer plates and the upper ends of third and fourth guide rails that horizontally support the second transfer plates and fixedly support the opposite ends of the bodies, wherein the heap of coal transferred from the upper surfaces of the first and second transfer plates is flattened to a predetermined height, and reheat steam sprayed while passing through the first and second transfer plates is uniformly applied to the surfaces of the coal particles.
C10L 9/00 - Traitement des combustibles solides en vue d'améliorer leur combustion
F26B 3/06 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air le gaz ou la vapeur s'écoulant à travers le matériau ou les objets à sécher
11.
APPARATUS FOR PREVENTING SPONTANEOUS IGNITION OF TRANSFERRED COAL IN APPARATUS FOR DRYING COAL USING REHEAT STEAM
The present invention relates to an apparatus for preventing, in a multi-stage dryer for drying coal using reheat steam, spontaneous ignition caused by oxidation of coal when coal is transferred to the multi-stage dryer from a fixed quantity coal supplier by way of a pulverizer. The present invention relates to an apparatus for drying coal using reheat steam, the apparatus being configured so that coal which has been dried primarily in a first coal dryer is inputted into a second coal dryer and thus is secondarily dried, wherein reheat steam generated from a reheater is supplied through a reheat steam supply pipe; a nitrogen supplier supplies nitrogen through a nitrogen supply pipe; saturated steam generated from a saturated steam generator is supplied through a saturated steam supply pipe; the reheat steam supply pipe, the nitrogen supplier, and the saturated steam supply pipe are connected to a 4-way valve; and the 4-way valve supplies nitrogen and saturated steam, or nitrogen or saturated steam, along with reheat steam, to first to fourth steam chambers through the steam supply pipe, and injects steam into coal which is transferred to a first transfer plate and a second transfer plate so that spontaneous ignition of coal is prevented in the course of drying and transferring coal.
F26B 3/06 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air le gaz ou la vapeur s'écoulant à travers le matériau ou les objets à sécher
F26B 25/00 - Parties constitutives d'application générale non couvertes par un des groupes ou
KOREA SOUTH-EAST POWER CO., LTD (République de Corée)
HANKOOK TECHNOLOGY INC. (République de Corée)
Inventeur(s)
Choi, Suk Hwan
Nam, Hyun Seok
Choi, Bi Ryong
Kim, Yong Bin
Kim, Sung Kon
Abrégé
A reheating-type coal drying apparatus using low-pressure superheated steam, according to the present invention, comprises: a combustor for generating steam by heating a water pipe provided in a combustion furnace by means of the combustion of coal supplied from a coal storage yard at which the coal used as the fuel of a thermoelectric power plant is stored; a superheater for superheating the steam, to be generated from a fluidized bed combustor, by exhaust gas discharged from the fluidized bed combustor so as to flow along an exhaust gas flow pipe; a coal dryer formed by including a first dryer to which the coal is supplied from the coal storage yard and the superheated steam is supplied from the superheater in order to firstly dry the coal, and a second dryer for secondarily drying the firstly dried coal transferred from the first dryer; and a reheater including a gas chamber to which the exhaust gas discharged from the superheater is supplied and an exhaust steam flow pipe provided in the gas chamber so as to allow exhaust steam discharged from the coal dryer to flow therethrough, generating reheated steam by reheating the exhaust steam by the exhaust gas, and supplying the reheated steam to the second dryer.
F26B 21/02 - Circulation de l'air ou des gaz en cycles fermés, p. ex. totalement à l'intérieur de l'enceinte de séchage
F26B 3/084 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air le gaz ou la vapeur s'écoulant à travers le matériau ou les objets à sécher de façon à les rendre lâches, p. ex. pour former un lit fluidisé un échange de chaleur intervenant dans le lit fluidisé
F26B 15/18 - Machines ou appareils à mouvement progressif pour le séchage d'objetsMachines ou appareils à mouvement progressif, pour le séchage de lots d'un matériau de forme compacte avec un mouvement suivant une trajectoire composée d'une ou de plusieurs lignes droites, p. ex. combinée les lignes étant toutes horizontales ou légèrement inclinées les objets ou les lots de matériau étant portés par des courroies sans fin
The present comprises: a first coal dryer; a second coal dryer; and a third dryer, by removing moisture remaining inside and outside of coal, which is used for fueling thermal power plants, in the multiple coal dryers using reheat steam at a high temperature, incomplete combustion of coal can be prevented, thereby enhancing heat capacity of the coal, minimizing release of pollutants, preventing corrosion and enhancing the durability of a system, reducing the rate of spontaneous combustion due to reduced moisture, improving crushing efficiency of a coal pulverizer and heat distribution of a power boiler when coal is combusted, resolving the issue of clogging of a moving pathway when coal is transported, and improving coal supply stability by increasing utilization of low-quality coal for which demand is low. Furthermore, the following advantages can be provided: use of low heat capacity coal which is more affordable than high heat capacity coal; savings in fuel cost and manufacturing cost by reduced coal importation; reduction of waste, pollutants, and carbon dioxide generated from exhaust gas by relative reduction of coal consumption, and the advantages of replacement of foreign technology and exportation of equipment to foreign markets could be anticipated.
F26B 3/02 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air
F26B 15/18 - Machines ou appareils à mouvement progressif pour le séchage d'objetsMachines ou appareils à mouvement progressif, pour le séchage de lots d'un matériau de forme compacte avec un mouvement suivant une trajectoire composée d'une ou de plusieurs lignes droites, p. ex. combinée les lignes étant toutes horizontales ou légèrement inclinées les objets ou les lots de matériau étant portés par des courroies sans fin
Provided is a coal drying system, and more specifically, a coal drying system using reheat steam comprising: a coal sorting device for sorting coal which has been transported by a coal transport conveyer from a coal yard, and respectively discharging the coal onto a fueling coal transport conveyer and a drying coal transport conveyer; a fluidizing reheater for storing the coal which has been sorted as fuel coal and transported into a fuel coal storage tank, and heating the fuel coal stored in the coal storage tank to a fluidized state and generating reheat steam at a specific temperature; a coal drying device for drying the coal by spraying the reheat steam generated by the fluidizing reheater on the coal, while the coal, which has been transported by the drying coal transport conveyer and passed through a coal distributing conveyer, is transported through multiple steps; and a combustion gas reheater for generating reheat steam at a specific temperature from exhaust gas generated after the coal is dried in the coal drying device by using combustion gas generated in the fluidizing reheater.
F26B 3/02 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air
F26B 15/18 - Machines ou appareils à mouvement progressif pour le séchage d'objetsMachines ou appareils à mouvement progressif, pour le séchage de lots d'un matériau de forme compacte avec un mouvement suivant une trajectoire composée d'une ou de plusieurs lignes droites, p. ex. combinée les lignes étant toutes horizontales ou légèrement inclinées les objets ou les lots de matériau étant portés par des courroies sans fin
The present invention relates to an apparatus for generating and supplying steam or mist in the form of reheat steam, and provides the apparatus for generating reheat steam comprising: a combustion chamber provided with a space portion having a specific volume and a burner which is installed at the center of the upper end of the inside of the combustion chamber; a steam chamber, which is provided with a space portion having a specific volume around the outer circumference of the combustion chamber, for heating for the first time using heat transferred from the combustion chamber, steam or dissipated mist at a specific temperature that is supplied from the outside; a plurality of steam-heating pipes, which are wound in the form of a coil inside the combustion chamber, for heating for the second time by means of flames generated from the burner, the steam or the mist supplied after being heated for the first time in the steam chamber, into reheat steam at a specific temperature; an exhaust chamber having a specific volume, which is formed around the outer circumference of the steam chamber and communicates with the combustion chamber, for discharging exhaust gas combusted in the combustion chamber through a gas exhaust pipe; and a heating chamber having a specific volume, which is formed around the outer circumference of the exhaust chamber, for heating steam or air supplied from the outside using heat transferred from the exhaust chamber.
F22G 1/02 - Surchauffe de la vapeur caractérisée par la méthode de chauffage la chaleur étant fournie par les fumées chaudes provenant du foyer de la chaudière
F22G 3/00 - Surchauffeurs de vapeur caractérisés par des particularités structuralesDétails ou parties constitutives de ces appareils
KOREA WESTERN POWER CO., LTD. (République de Corée)
Inventeur(s)
Kim, Sung Kon
Abrégé
The present disclosure relates to a coal drying system for removing water contained in coal used as a fuel of a thermoelectric power plant with superheated steam. The system prevents the incomplete combustion of the coal by removing water existing inside and outside the coal fuel of the thermoelectric power plane, thereby improving a heating value of coal and minimizing the discharge of pollutants, prevents the corrosion of the system and improves the durability, and increases the use of low-quality coal of which the demand is low, thereby improving the stable supply of the coal.
F26B 15/24 - Machines ou appareils à mouvement progressif pour le séchage d'objetsMachines ou appareils à mouvement progressif, pour le séchage de lots d'un matériau de forme compacte avec un mouvement suivant une trajectoire composée d'une ou de plusieurs lignes droites, p. ex. combinée les lignes étant toutes verticales ou fortement inclinées les objets ou les lots de matériau étant portés par des courroies sans fin suivant une trajectoire en zigzag
F26B 3/04 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air le gaz ou la vapeur circulant sur ou autour du matériau ou des objets à sécher
F22B 1/00 - Méthodes de production de vapeur caractérisées par le genre de chauffage
F26B 21/02 - Circulation de l'air ou des gaz en cycles fermés, p. ex. totalement à l'intérieur de l'enceinte de séchage
17.
SYSTEM FOR DRYING COAL USING LARGE QUANTITY OF SUPERHEATED STEAM
KOREA WESTERN POWER CO., LTD. (République de Corée)
Inventeur(s)
Kim, Sung Kon
Abrégé
A system for drying coal. A superheated steam enhancing unit includes low-temperature steam inlet pipes connected to a steam supply chamber and steam heating pipes each connected to a corresponding one of the low-temperature steam inlet pipes. Each steam heating pipe creates hot steam by re-heating low-temperature steam, and discharges hot superheated steam via a superheated steam exhaust pipe. A hot air supplier creates hot air by burning fuel. A superheated steam dry unit removes moisture from the surface of coal using the superheated steam while transporting the coal on a steam conveyor belt. A hot air dry unit removes moisture from the inside of the coal using the hot air while transporting the coal on a dry conveyor belt. A natural dry unit lowers the temperature of the coal by drying the coal at room temperature while transporting the coal on a flat conveyor belt.
F26B 21/02 - Circulation de l'air ou des gaz en cycles fermés, p. ex. totalement à l'intérieur de l'enceinte de séchage
F26B 17/08 - Machines ou appareils à mouvement progressif pour le séchage d'un matériau en vrac, à l'état plastique ou sous forme fluidisée, p. ex. granulés, fibres brutes le mouvement étant réalisé par des courroies entraînant le matériauMachines ou appareils à mouvement progressif pour le séchage d'un matériau en vrac, à l'état plastique ou sous forme fluidisée, p. ex. granulés, fibres brutes le mouvement étant réalisé par des courroies propulsant le matériau sur des surfaces fixes les courroies étant disposées suivant une trajectoire sinueuse ou en zigzag
F26B 3/04 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air le gaz ou la vapeur circulant sur ou autour du matériau ou des objets à sécher
18.
SYSTEM FOR DRYING COAL USING HOT SUPERHEATED STEAM WHICH IS HEATED MULTIPLE TIMES
KOREA WESTERN POWER CO., LTD. (République de Corée)
Inventeur(s)
Kim, Sung Kon
Abrégé
A system for drying coal. A superheated steam reheating unit includes heating pipes connected in multiple stages to reheat superheated steam supplied from a superheated steam supply pipe and a connector pipe communicating between the heating pipes. Each heating pipe has therein a dry heater, which converts applied electrical energy into heat due to electrical resistance. A hot air supplier creates hot air by burning fuel. A superheated steam dry unit removes moisture from the surface of coal using the superheated steam while transporting the coal on a steam conveyor belt. A hot air dry unit removes moisture from the inside of the coal using the hot air while transporting the coal on a dry conveyor belt. A natural dry unit lowers the temperature of the coal by drying the coal at room temperature while transporting the coal on a flat conveyor belt.
F26B 21/02 - Circulation de l'air ou des gaz en cycles fermés, p. ex. totalement à l'intérieur de l'enceinte de séchage
F26B 17/08 - Machines ou appareils à mouvement progressif pour le séchage d'un matériau en vrac, à l'état plastique ou sous forme fluidisée, p. ex. granulés, fibres brutes le mouvement étant réalisé par des courroies entraînant le matériauMachines ou appareils à mouvement progressif pour le séchage d'un matériau en vrac, à l'état plastique ou sous forme fluidisée, p. ex. granulés, fibres brutes le mouvement étant réalisé par des courroies propulsant le matériau sur des surfaces fixes les courroies étant disposées suivant une trajectoire sinueuse ou en zigzag
F26B 21/06 - Commande, p. ex. régulation des paramètres de l'alimentation en gaz
F26B 3/04 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c.-à-d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p. ex. l'air le gaz ou la vapeur circulant sur ou autour du matériau ou des objets à sécher
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