WO2023173902A1 - Système de récupération de chaleur résiduelle correspondant à un système de fabrication de fer à réduction par fusion à haute intensité - Google Patents

Système de récupération de chaleur résiduelle correspondant à un système de fabrication de fer à réduction par fusion à haute intensité Download PDF

Info

Publication number
WO2023173902A1
WO2023173902A1 PCT/CN2022/143823 CN2022143823W WO2023173902A1 WO 2023173902 A1 WO2023173902 A1 WO 2023173902A1 CN 2022143823 W CN2022143823 W CN 2022143823W WO 2023173902 A1 WO2023173902 A1 WO 2023173902A1
Authority
WO
WIPO (PCT)
Prior art keywords
flue
cooling
section
steam
flue gas
Prior art date
Application number
PCT/CN2022/143823
Other languages
English (en)
Chinese (zh)
Inventor
钱飞舟
朱泓
魏兆强
Original Assignee
苏州海陆重工股份有限公司
苏州海陆节能环保技术研究所有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州海陆重工股份有限公司, 苏州海陆节能环保技术研究所有限公司 filed Critical 苏州海陆重工股份有限公司
Publication of WO2023173902A1 publication Critical patent/WO2023173902A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases

Definitions

  • the invention relates to a waste heat recovery system, in particular to a waste heat recovery system matched to the HISMELT smelting reduction ironmaking system.
  • HISMELT is translated into Haismet according to the Chinese pronunciation.
  • HISMELT smelting reduction ironmaking technology is a short-process ironmaking technology that uses non-coking coal and iron ore powder to produce liquid iron by injection. Because it does not require the original coke process and pellet process of ironmaking, and directly uses coal powder and iron ore powder to make iron, it has the advantages of strong raw material adaptability, low environmental pollution, and high product quality. The factory construction is relatively simple. It has extremely high social, economic and environmental value.
  • Smelting reduction ironmaking technology is a technological improvement in blast furnace ironmaking technology, in which the waste heat recovery system is a key part of the entire system.
  • the HISMELT reactor in the HISMELT smelting reduction ironmaking system also known as the reduction furnace, produces high-temperature flue gas with a pressure close to 1.0 bar and a temperature of about 1450°C.
  • the high-temperature flue gas contains combustible gases such as CO and H 2 , and also contains a large amount of Bonded dust in a molten state.
  • the waste heat recovery system in the HISMELT smelting reduction ironmaking system converts the heat energy in the high-temperature flue gas into steam to generate electricity.
  • the current waste heat recovery system in the HISMELT smelting reduction ironmaking system The specific structure can be found in Chinese patent application CN103773912A. It mainly includes: a flue connected to the reduction furnace.
  • the flue includes an ascending section and a descending section.
  • the ascending section flue and the descending section The upper ends of the flue sections are connected by a transition flue, and the lower end of the descending flue section is provided with a connecting flue.
  • the connecting flue is connected to the high-temperature cyclone separator, and the flue gas outlet of the high-temperature cyclone separator is connected to the waste heat boiler. .
  • the high-temperature flue gas generated by the reduction furnace releases heat sequentially through the ascending flue, the transition flue, and the descending flue, and then enters the high-temperature cyclone separator through the connecting flue.
  • the high-temperature cyclone separator removes large particles in the high-temperature flue gas. After removal, the high-temperature flue gas with large particles removed enters the waste heat boiler for heat transfer.
  • the above-mentioned waste heat recovery system in the HISMELT smelting reduction ironmaking system has the following technical problems during operation: the high-temperature flue gas after removing large particles through the high-temperature cyclone separator still contains a large number of high-temperature bonded dust with smaller particle diameters.
  • the characteristic of this kind of high-temperature bonded dust particles is that their surface temperature is relatively low, but their internal core temperature is still very high, that is, the small-sized bonded dust remaining in the high-temperature gas has not been completely cooled.
  • Such high-temperature bonded dust particles is very easy to adhere to the wall of the heat exchange tube in the waste heat boiler, thus forming slagging on the wall of the heat exchange tube, and more and more accumulated dust can easily lead to large pieces falling off and clogging. As time goes by, the heat exchange effect of waste heat boilers continues to decrease, and safety hazards become more and more serious.
  • the purpose of this invention is to provide a waste heat recovery system that is matched to the Hesmet smelting reduction ironmaking system.
  • the waste heat recovery system can solve the technical problem of slagging on the walls of heat exchange tubes caused by particulate matter in high-temperature flue gases. , and further greatly improve the heat recovery efficiency.
  • a waste heat recovery system matched to the Hesmet smelting reduction ironmaking system including: a cooling flue with a membrane water-cooled wall structure, and a smoke duct with a membrane water-cooled wall cooling the flue.
  • the water-cooled wall rising pipe and the flue water-cooled wall descending pipe are connected to the flue drum.
  • the outlet end of the cooling flue is provided with a connecting flue.
  • the outlet of the connecting flue is connected to a separator for separating solid particles in the gas.
  • the cooling The flue includes an entrance section cooling flue.
  • the entrance section cooling flue is connected to the reactor.
  • the entrance section cooling flue is gradually tilted upward from the reactor.
  • the angle between the entrance section cooling flue and the horizontal direction is greater than or equal to 45 degrees and less than or equal to 60 degrees, the molten slag in the high-temperature flue gas in the entrance section cooling flue can flow back to the reaction furnace along the entrance section cooling flue.
  • the temperature of the flue gas at the outlet end of the cooling flue is controlled between 750°C and 1000°C.
  • the cooling medium is introduced into the flue to cool the flue gas entering the connecting flue to 600°C ⁇ 700°C; the flue gas outlet of the separator is connected to the steam superheater, and the superheater flue gas outlet of the steam superheater is connected to the fire tube boiler.
  • the boiler riser and boiler downcomers of the fire tube boiler are connected to the boiler drum.
  • the fire tube boiler is connected to the fire tube economizer through the transition smoke chamber.
  • the bottom of the fire tube economizer is provided with a flue gas outlet.
  • the discharge cylinder, the fire tube economizer is provided with an economizer water inlet pipe and an economizer water outlet pipe.
  • the economizer outlet pipe is connected to the fire tube boiler drum water supply pipe and the flue drum water supply pipe.
  • the fire tube boiler steam drum The package water supply pipe is connected to the fire tube boiler steam drum, the flue steam drum water supply pipe is connected to the flue steam drum, the flue steam drum is provided with a flue steam drum steam output pipe, and the fire tube boiler steam drum is provided with a saturated steam output pipe.
  • the flue drum steam output pipe and the saturated steam output pipe are convergently connected to the superheater steam input end of the steam superheater, and a superheated steam output pipe is provided on the steam superheater.
  • the cooling medium uses cooling water, or the flue gas output from the flue gas outlet of the flue gas discharge cylinder is desulfurized. And used as cooling medium after dust removal and purification.
  • the cooling medium in the connecting flue is injected through nozzles, and the nozzles are arranged at the top, bottom and both sides of the connecting flue.
  • the nozzles on the inner wall of the connecting flue, the top, the bottom and both sides of the connecting flue are all arranged at intervals along the length of the connecting flue.
  • the cooling flue also includes a roundabout section cooling section flue, and the roundabout section cooling flue includes vertical and The ascending section cooling flue and the descending section cooling flue are arranged in parallel intervals.
  • the upper ends of the ascending section cooling flue and the descending section cooling flue are connected by the transition section cooling flue.
  • the lower end of the ascending section cooling flue is connected with the inlet section cooling flue.
  • the upper end of the channel is connected, and the bottom of the descending section cooling flue is connected to the descending section smoke exhaust barrel.
  • a cooling flue ash outlet is set on the bottom of the descending section smoke exhaust barrel, and the connecting flue is connected to the descending section smoke exhaust barrel.
  • the transition section cooling flue includes: a mirror-image set of first-stage cooling flue and a second-stage cooling flue, and a first-stage cooling flue.
  • the cooling flue of the second section curves upward from the top of the cooling flue in the ascending section and towards the cooling flue in the descending section.
  • the cooling flue in the second section curves upward from the top of the cooling flue in the descending section and bends in the direction of the cooling flue in the ascending section.
  • the cooling flue in the turning section The cooling flue is connected to the second section of the cooling flue at the top.
  • two flue gas explosion-proof valves are provided at the top of the transition section cooling flue, and the two flue gas explosion-proof valves are respectively located in the cooling section of the corner.
  • the flue and the second cooling section of the turning flue are respectively located in the cooling section of the corner.
  • the heating tube in the steam superheater adopts a serpentine heating tube.
  • both the fire tube boiler and the fire tube economizer are vertical structures.
  • the advantages of the present invention are: 1.
  • the inlet section cooling flue is gradually tilted upward from one end of the reaction furnace, and the angle between the inlet section cooling flue and the horizontal direction is greater than or equal to 45 degrees and less than or equal to 60 degrees, which can make high-temperature smoke
  • the molten slag in the gas flows back into the reactor along the inlet cooling flue, thereby effectively reducing the amount of molten particulate matter in the high-temperature flue gas at the source of the waste heat recovery system, and effectively avoiding slagging in the waste heat recovery system equipment.
  • the waste heat recovery system uses a steam superheater.
  • the setting of the steam superheater greatly improves the heat recovery efficiency and reduces the temperature of the outlet flue gas. That is, the temperature of the final exhaust flue gas is effectively reduced. After the temperature is lowered, The flue gas can be directly purified by dry dust removal, such as direct bag dust removal, which effectively saves the cost of exhaust gas purification. 4.
  • Fire tube boilers and fire tube economizers are both vertical structures, adopt longitudinal flushing, and have good self-cleaning effect, which can effectively improve the heat exchange effect of heat exchange equipment and extend the service life of the equipment.
  • Figure 1 is a schematic structural diagram of the waste heat recovery system matched to the Hesmet smelting reduction ironmaking system according to the present invention.
  • FIG. 2 is a schematic structural diagram of the cooling flue in Figure 1.
  • the waste heat recovery system supporting the Hesmet smelting reduction ironmaking system includes: cooling flue 1 with a membrane water-cooled wall structure, and water-cooled flue with a membrane water-cooled wall for cooling flue 1
  • the wall rising pipe 21 and the flue water-cooled wall descending pipe 22 are connected to the flue drum 2 .
  • the cooling flue 1 includes an entrance section cooling flue 11.
  • the entrance section cooling flue 11 is connected to the reaction furnace 3.
  • the entrance section cooling flue 11 is gradually inclined upward from the reaction furnace 3.
  • the entrance section cooling flue 11 is oriented horizontally.
  • the angle ⁇ is greater than or equal to 45 degrees and less than or equal to 60 degrees.
  • the molten slag in the high-temperature flue gas in the inlet section cooling flue 11 can flow back to the reaction furnace 3 along the inlet section cooling flue 11.
  • the temperature of the flue gas at the outlet end of the cooling flue 1 is controlled to 750°C to 1000°C.
  • the cooling flue 1 also includes a circuitous section cooling section flue 12.
  • the circuitous section cooling flue 12 includes an ascending section cooling flue 121 and a descending section cooling flue 122 arranged vertically and in parallel.
  • the upper ends of the ascending section cooling flue 121 and the descending section cooling flue 122 are connected by the transition section cooling flue.
  • the lower end of the ascending section cooling flue 121 is connected with the upper end of the entrance section cooling flue 11.
  • the descending section cooling flue 122 A descending section smoke exhaust cylinder 123 is connected to the bottom, and a cooling flue ash outlet 124 is provided on the bottom of the descending section smoke exhaust cylinder 123 .
  • the descending section smoke exhaust cylinder 123 is connected to the connecting flue 4.
  • the transition section cooling flue includes: a first-stage cooling flue 125 and a second-stage cooling flue 126 arranged in mirror symmetry.
  • the first-stage cooling flue 125 and the second-stage cooling flue 126 are arranged in mirror symmetry for the purpose of : Easy to install and maintain, reducing manufacturing and production costs.
  • the cooling flue 125 of the first turning section goes upward from the top of the cooling flue 121 of the ascending section and bends in the direction of the cooling flue 122 of the descending section.
  • the cooling flue 126 of the second section of the turning starts from the top of the cooling flue 122 of the descending section and bends upward towards the cooling section of the ascending section.
  • the direction of the flue 121 is curved, and the first cooling flue 125 and the second cooling flue 126 are connected at the top.
  • Two smoke explosion-proof valves 127 are provided at the top of the transition section cooling flue. The two smoke explosion-proof valves 127 are respectively located on the cooling flue 125 of the first turning section and the cooling flue 126 of the second turning section.
  • the cooling medium is introduced into the connecting flue 4 to cool the flue gas entering the connecting flue 4 to 600°C to 700°C. At this temperature, the particles in the high-temperature flue gas can be completely cooled, that is, the particles are no longer molten from the core to the outer surface.
  • the cooling medium in the connecting flue 4 is sprayed by nozzles 41.
  • the nozzles 41 are arranged on the top, bottom and inner walls of the connecting flue on both sides of the connecting flue 4.
  • the top of the connecting flue 4 is The nozzles 41 on the inner wall of the connecting flue 4 at the bottom and both sides are spaced along the length direction of the connecting flue 4.
  • the cooling medium needs to ensure that the introduction of the cooling medium will not cause explosion, combustion or other safety issues in the connecting flue 4 .
  • the outlet of the connecting flue 4 is connected to a separator 5 for separating solid particles in the gas.
  • a separator ash hopper 51 is provided at the bottom of the separator 5 .
  • the separator 5 adopts a high temperature cyclone separator. The high-temperature cyclone separator can effectively remove particles and prevent them from scouring and abrading the waste heat recovery system.
  • the flue gas outlet of the separator 5 is connected to the steam superheater 6, and the superheater flue gas outlet of the steam superheater 6 is connected to the fire tube boiler 7.
  • a boiler rising pipe 711 is provided between the fire tube boiler 7 and the fire tube boiler drum 71. and the boiler downcomer 712.
  • the fire tube boiler 7 is connected to the fire tube economizer 9 through the transition section smoke chamber 8.
  • the bottom of the fire tube economizer 9 is provided with a flue gas discharge cylinder 91 with a flue gas discharge port 911, and the bottom of the flue gas discharge cylinder 91 is provided with a discharge cylinder ash hopper 912.
  • both the fire tube boiler 7 and the fire tube economizer 9 adopt a vertical structure.
  • the fire tube economizer 9 is provided with an economizer water inlet pipe 92 and an economizer water outlet pipe 93.
  • the economizer water outlet pipe 93 is connected to the fire tube boiler water supply pipe 713 and the flue drum water supply pipe 201.
  • the fire tube boiler water supply pipe 713 is connected to the fire tube boiler steam drum 71
  • the flue steam drum water supply pipe 201 is connected to the flue steam drum 2 .
  • the flue drum steam output pipe 23 is provided on the flue drum 2
  • the saturated steam output pipe 714 is provided on the fire tube boiler drum 71.
  • the flue drum steam output pipe 23 and the saturated steam output pipe 714 are collectively connected to the superheater steam input end 61 of the steam superheater 6 , and a superheated steam output pipe 62 is provided on the steam superheater 6 .
  • the cooling medium is cooling water, or the flue gas output from the flue gas discharge port 911 of the flue gas discharge cylinder 91 is used as the cooling medium after being purified by desulfurization and dust removal, and the flue gas discharged from the flue gas discharge port 911 is used as the cooling medium.
  • the cooling medium can effectively reduce the cost of waste heat recovery.
  • Flue range The high-temperature flue gas generated by the reactor 3 enters the cooling flue 1 through the entrance section cooling flue 11. Since the entrance section cooling flue 11 is tilted, the inclination angle ⁇ is greater than or equal to 45 degrees and less than or equal to 60 Therefore, the molten slag in the cooling flue 11 at the entrance section can flow back to the reaction furnace 3 very well. That is to say, the amount of molten ash entering the waste heat recovery system is greatly reduced at the entrance of the waste heat recovery system, thereby effectively reducing the risk of slagging in the waste heat recovery system.
  • the high-temperature flue gas enters the roundabout section cooling flue 12 through the inlet section cooling flue 11.
  • the high-temperature flue gas passes through the ascending section cooling flue 121, the first turning cooling flue 125, and the second turning section cooling in the roundabout section cooling flue 12.
  • the flue 126 and the descending section cooling flue 122 continuously release heat and then cool to 750°C to 1000°C, and then enter the descending section smoke exhaust barrel 123.
  • the ash in the descending section smoke exhaust cylinder 123 is discharged from the cooling flue ash outlet 124.
  • the high-temperature flue gas in the descending section smoke exhaust cylinder 123 enters the connecting flue 4.
  • the nozzle 41 in the connection flue 4 sprays cooling medium to further cool the high-temperature flue gas.
  • the cooling medium is cooling water or the flue gas output from the flue gas discharge port 911 of the flue gas discharge cylinder 91. Both of them can be used to cool down the high-temperature flue gas. High temperature flue gas is effectively cooled. Another advantage of using the exhaust gas output from the flue gas outlet 911 of the flue gas exhaust cylinder 91 for cooling is that it utilizes the exhaust gas and reduces the cost of waste heat recovery.
  • the high-temperature flue gas is further cooled to 600°C to 700°C in the connecting flue 4. At this temperature, the ash remaining in the high-temperature flue gas is further cooled until its core is no longer molten.
  • the high-temperature flue gas further cooled in the connecting flue 4 enters the separator 5 for solid particle separation.
  • the separator 5 separates the larger particle size particles from the high-temperature flue gas. Since the high-temperature flue gas is cooled for a second time in the connecting flue 4, the particles that still remain in the high-temperature flue gas after separation by the separator 5 are Since the core temperature of the particles has been further reduced, the particles are no longer molten from the outside to the core, which greatly reduces the possibility of the particles forming slagging in the waste heat recovery system.
  • the high-temperature flue gas separated by the separator 5 enters the steam superheater 6 through the flue gas outlet of the separator 5.
  • the steam superheater 6 adopts a serpentine heat exchange tube. Although the serpentine heat exchange tube bundle in the steam superheater 6 is densely packed, the particulate matter in the high-temperature flue gas output from the separator 5 has been completely cooled to the core and is no longer molten, that is, the particulate matter has been fully cooled. Such high-temperature flue gas enters The steam superheater 6 with a dense heat exchange tube bundle will not produce slagging on the heat exchange tube bundle of the steam superheater 6. This is the key to using the steam superheater 6 in this waste heat recovery system.
  • the use of the steam superheater 6 is effective
  • the heat recovery efficiency of the entire waste heat recovery system is improved, and the temperature of the flue gas discharged from the flue gas outlet 911 is greatly reduced.
  • the flue gas output by the steam superheater 6 enters the fire tube boiler 7, and the flue gas further releases heat in the fire tube boiler 7.
  • the flue gas output by the fire tube boiler 7 enters the fire tube economizer 9 through the transition section smoke chamber 8.
  • the flue gas after releasing heat in the tube economizer 9 is discharged outward from the flue gas discharge port 911 on the flue gas discharge cylinder 91.
  • a part of the flue gas discharged from the flue gas discharge port 911 can be used as a cooling medium in the connecting flue 4 .
  • the ash in the flue gas discharge cylinder 91 is discharged from the discharge cylinder ash hopper 912 .
  • the external water supply enters the fire tube economizer 9 through the fire tube economizer water inlet pipe 92, and the water that has absorbed heat in the fire tube economizer 9 enters through the economizer outlet pipe 93 and the fire tube boiler water supply pipe 713. It reaches the fire tube boiler drum 71 and enters the flue drum 2 through the economizer outlet pipe 93 and the flue drum water supply pipe 201.
  • the hot water in the fire tube boiler drum 71 enters the fire tube boiler 7 through the boiler downcomer 712.
  • the steam-water mixture formed after absorbing the heat of the flue gas in the fire tube boiler 7 enters the fire tube boiler drum 71 through the boiler riser tube 711. , the saturated steam generated by the fire tube boiler drum 71 is output from the saturated steam output pipe 714.
  • the hot water in the flue drum 2 enters the membrane water-cooling wall of the cooling flue 1 through the downcomer 22 of the flue water-cooling wall.
  • the hot water in the membrane water-cooling wall absorbs the heat of the high-temperature flue gas and forms steam through the flue gas.
  • the water-cooled wall rising pipe 21 enters the flue drum 2, and the saturated steam generated by the flue drum 2 is output through the flue drum steam output pipe 23.
  • the saturated steam output by the flue drum steam output pipe 23 and the saturated steam output by the fire tube boiler drum 71 through the saturated steam output pipe 714 converge and enter the steam superheater 6.
  • the saturated steam absorbs high-temperature smoke in the steam superheater 6.
  • the heat of the gas is then formed into superheated saturated steam that can be used to generate electricity, and is output through the hot steam output pipe 62.
  • the advantages of the present invention are: 1.
  • the inlet section cooling flue 11 is gradually tilted upward from one end of the reaction furnace 3, and the angle between the inlet section cooling flue 11 and the horizontal direction is greater than or equal to 45 degrees and less than or equal to 60 degrees, so that The molten slag in the high-temperature flue gas is allowed to flow back into the reaction furnace 3 along the inlet section cooling flue, thereby effectively reducing the amount of molten particulate matter in the high-temperature flue gas at the source of the waste heat recovery system, and thus effectively avoiding slagging on the waste heat recovery system equipment.
  • the phenomenon 2.
  • the waste heat recovery system uses a steam superheater.
  • the setting of the steam superheater greatly improves the heat recovery efficiency and reduces the temperature of the outlet flue gas, that is, the temperature of the flue gas discharged from the final flue gas outlet 911 is effectively
  • the flue gas can be directly purified by dry dust removal, such as direct bag dust removal, which effectively saves the cost of exhaust gas purification.
  • Fire tube boilers and fire tube economizers are both vertical structures, adopt longitudinal flushing, and have good self-cleaning effect, which can effectively improve the heat exchange effect of heat exchange equipment and extend the service life of the equipment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

La présente invention concerne un système de récupération de chaleur résiduelle correspondant à un système de fabrication de fer à réduction par fusion à haute intensité, le système de récupération de chaleur résiduelle comprenant : un conduit de refroidissement et un tambour à vapeur de combustion, une extrémité de sortie du conduit de refroidissement étant pourvue d'un conduit de raccordement, une sortie du conduit de raccordement étant reliée à un séparateur, une section d'entrée du conduit de refroidissement étant reliée à un four de réaction, et un milieu de refroidissement étant introduit dans le conduit de raccordement pour refroidir le gaz de combustion ; une sortie de gaz de combustion de séparateur est reliée à un surchauffeur de vapeur, une sortie de gaz de combustion du surchauffeur à vapeur est reliée à une chaudière à tube d'incendie, un tube ascendant et un tube descendant de la chaudière à tube d'incendie sont reliés à un tambour de vapeur de chaudière, la chaudière à tube d'incendie est reliée à un économiseur de tube d'incendie, un corps de cylindre d'évacuation de gaz de combustion est disposé au fond de l'économiseur de tube d'incendie, un tube de sortie d'eau économiseur sur le tube de sortie d'eau fournit de l'eau au tambour de vapeur de chaudière et au tambour à vapeur de combustion, et la sortie de vapeur par le tambour à vapeur de combustion et le tambour de vapeur de chaudière à tube d'incendie est acheminée au surchauffeur de vapeur, et le surchauffeur à vapeur est muni d'un tube de sortie de vapeur surchauffée. La présente invention peut empêcher efficacement un phénomène de scorification et améliorer significativement l'efficacité thermique.
PCT/CN2022/143823 2022-03-14 2022-12-30 Système de récupération de chaleur résiduelle correspondant à un système de fabrication de fer à réduction par fusion à haute intensité WO2023173902A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210245028.6 2022-03-14
CN202210245028.6A CN114636316B (zh) 2022-03-14 2022-03-14 配套于hismelt熔融还原炼铁体系的余热回收系统

Publications (1)

Publication Number Publication Date
WO2023173902A1 true WO2023173902A1 (fr) 2023-09-21

Family

ID=81947634

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/143823 WO2023173902A1 (fr) 2022-03-14 2022-12-30 Système de récupération de chaleur résiduelle correspondant à un système de fabrication de fer à réduction par fusion à haute intensité

Country Status (2)

Country Link
CN (1) CN114636316B (fr)
WO (1) WO2023173902A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117404926A (zh) * 2023-10-24 2024-01-16 宜兴市宇友冶金设备有限公司 一种全封闭冶金炉热循环回收再利用装置及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114636316B (zh) * 2022-03-14 2024-01-26 苏州海陆重工股份有限公司 配套于hismelt熔融还原炼铁体系的余热回收系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506631A (en) * 1982-06-22 1985-03-26 Lawrence Waldemar Ihnativ Process to produce hydrogen and oxygen utilizing the energy content of waste materials
CN103773912A (zh) * 2013-12-30 2014-05-07 苏州海陆重工股份有限公司 用煤直接还原法炼铁的余热回收系统
CN212272326U (zh) * 2020-04-03 2021-01-01 唐钢国际工程技术股份有限公司 一种熔融还原炼铁工艺高温煤气余热回收发电系统
CN214038332U (zh) * 2020-08-14 2021-08-24 山东墨龙石油机械股份有限公司 一种熔融还原余热循环收集发电系统
CN114636316A (zh) * 2022-03-14 2022-06-17 苏州海陆重工股份有限公司 配套于hismelt熔融还原炼铁体系的余热回收系统

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0004279B1 (pt) * 1999-09-20 2011-03-22 método e aparelho para extinção a seco de coque.
CN101768652B (zh) * 2009-12-18 2011-05-18 南京凯盛开能环保能源有限公司 基于高温热载体过热的转炉烟气余热发电系统和方法
CN201737972U (zh) * 2010-06-25 2011-02-09 宝钢工程技术集团有限公司 氩氧脱碳转炉全燃法烟气余热回收装置
CN103112888B (zh) * 2013-03-15 2014-06-25 金川集团股份有限公司 一种能从泥浆中回收四氯化钛的四氯化钛生产系统及方法
CN103627844B (zh) * 2013-12-16 2016-01-20 辽宁环宇环保科技股份有限公司 转炉煤气直燃热能回收净化系统及工艺
FI127390B (fi) * 2015-09-14 2018-04-30 Andritz Oy Soodakattilan lämmöntalteenottopintojen järjestely
CN106244175B (zh) * 2016-08-19 2019-02-19 肖爱国 烟气高温碳还原脱硝和热能回收装置
CN106755718B (zh) * 2016-12-12 2019-04-02 山西致业工程设计有限公司 转炉炼钢产生的烟气废热利用和除尘一体化系统及工艺
CN207091486U (zh) * 2017-06-30 2018-03-13 铜陵有色金属集团股份有限公司金冠铜业分公司 闪速炉烟道
CN212457967U (zh) * 2020-04-27 2021-02-02 内蒙古赛思普科技有限公司 一种熔融还原炉煤气余热发电系统
CN214193329U (zh) * 2020-10-30 2021-09-14 张家港宏昌钢板有限公司 一种改良转炉移动烟道
CN213543229U (zh) * 2020-11-27 2021-06-25 浙江富冶集团有限公司 一种用于铜冶炼回转式转炉的渣清理口装置
CN214881638U (zh) * 2020-12-31 2021-11-26 山东墨龙石油机械股份有限公司 用于熔融还原炉的烟道

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506631A (en) * 1982-06-22 1985-03-26 Lawrence Waldemar Ihnativ Process to produce hydrogen and oxygen utilizing the energy content of waste materials
CN103773912A (zh) * 2013-12-30 2014-05-07 苏州海陆重工股份有限公司 用煤直接还原法炼铁的余热回收系统
CN212272326U (zh) * 2020-04-03 2021-01-01 唐钢国际工程技术股份有限公司 一种熔融还原炼铁工艺高温煤气余热回收发电系统
CN214038332U (zh) * 2020-08-14 2021-08-24 山东墨龙石油机械股份有限公司 一种熔融还原余热循环收集发电系统
CN114636316A (zh) * 2022-03-14 2022-06-17 苏州海陆重工股份有限公司 配套于hismelt熔融还原炼铁体系的余热回收系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117404926A (zh) * 2023-10-24 2024-01-16 宜兴市宇友冶金设备有限公司 一种全封闭冶金炉热循环回收再利用装置及方法
CN117404926B (zh) * 2023-10-24 2024-05-10 宜兴市宇友冶金设备有限公司 一种全封闭冶金炉热循环回收再利用装置及方法

Also Published As

Publication number Publication date
CN114636316B (zh) 2024-01-26
CN114636316A (zh) 2022-06-17

Similar Documents

Publication Publication Date Title
WO2023173902A1 (fr) Système de récupération de chaleur résiduelle correspondant à un système de fabrication de fer à réduction par fusion à haute intensité
SU898960A3 (ru) Способ сжигани твердого углеродосодержащего топлива в кип щем слое
US9410096B2 (en) Method and system for cooling and washing biomass syngas
CN102425787B (zh) 一种液态排渣生物质燃烧装置及方法
CN103453521B (zh) 一种燃烧棕榈渣的循环流化床锅炉
CN106755718B (zh) 转炉炼钢产生的烟气废热利用和除尘一体化系统及工艺
WO2021258647A1 (fr) Structure de boîte de circulation naturelle pour chaudière de récupération de déchets de ferrosilicium
CN204986938U (zh) 节能除尘硫铁矿余热锅炉
CN103773912B (zh) 用煤直接还原法炼铁的余热回收系统
CN212999146U (zh) 一种实现高纯度磷回收的磷蒸汽除尘装置
CN206033675U (zh) 一种联合气化干馏制备低焦油燃气装置
CN111578723A (zh) 一种冶金高温含尘废气处理系统
CN108469019A (zh) 一种含酚废水与气化废焦混合焚烧系统
CN202692721U (zh) 一种水泥窑窑头一体化余热锅炉
CN202361361U (zh) 一种液态排渣生物质燃烧装置
CN217479487U (zh) Hismelt熔融还原炼铁体系中的余热回收系统
CN212566916U (zh) 一种冶金高温含尘废气处理系统
CN102012097A (zh) 流化床油水双介质循环锅炉
CN114184055A (zh) 一种水泥窑旁路放风余热锅炉
CN212377955U (zh) 自然循环硅铁余热锅炉箱体结构
CN201916893U (zh) 内分型混燃炉
CN217875823U (zh) 一种分离烟气的循环流化床锅炉
CN203668440U (zh) 用煤直接还原法炼铁的余热回收系统
CN208701107U (zh) 一种除尘装置和煤气高温除尘系统
CN201672675U (zh) 流化床油水双介质循环锅炉

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22931907

Country of ref document: EP

Kind code of ref document: A1