CN112029953A - Device and method for low-temperature electric dust removal and smoke whitening of primary smoke of converter - Google Patents

Device and method for low-temperature electric dust removal and smoke whitening of primary smoke of converter Download PDF

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Publication number
CN112029953A
CN112029953A CN202010965348.XA CN202010965348A CN112029953A CN 112029953 A CN112029953 A CN 112029953A CN 202010965348 A CN202010965348 A CN 202010965348A CN 112029953 A CN112029953 A CN 112029953A
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flue gas
heat exchange
temperature
converter
exchange device
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何西荣
高燕军
胡绪升
王艳婷
雷国鹏
曹春
严博
邵宁
汪蓓
吴佳
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Xi'an Xikuang Environmental Protection Co ltd
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Xi'an Xikuang Environmental Protection Co ltd
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/38Removal of waste gases or dust
    • C21C5/40Offtakes or separating apparatus for converter waste gases or dust

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chimneys And Flues (AREA)

Abstract

The invention relates to the technical field of converter flue gas, and discloses a device and a method for low-temperature electric dust removal and flue gas whitening of primary flue gas of a converter, wherein the device comprises the converter, an evaporative cooler, an electric dust remover, a gas cooler, a valve body, a gas cabinet and a chimney; the first heat exchange device is used for cooling the flue gas in a pipeline connected with the evaporative cooler and the electric dust remover; and the second heat exchange device is used for heating the flue gas in the pipeline connected with the valve body and the chimney. The invention effectively reduces the temperature of the flue gas before entering the electric dust remover, improves the dust removal efficiency, and can also solve the problem of white smoke emission of a chimney by utilizing the latent heat of the front-end high-temperature flue gas.

Description

Device and method for low-temperature electric dust removal and smoke whitening of primary smoke of converter
Technical Field
The invention relates to the technical field of converter flue gas, in particular to a converter primary flue gas low-temperature electric precipitation and flue gas whitening device and a converter primary flue gas low-temperature electric precipitation and flue gas whitening method.
Background
Converter primary dust removal equipment is an indispensable technological dust removal link for converter steelmaking, the current domestic converter dust removal modes are mainly divided into a wet method 'OG' method and a dry method 'LT' method, and the converter gas dry method dust removal 'LT' method is a novel dust removal structure, and the technological process is as follows: converter high temperature flue gas gets into evaporative cooler through the dry flue gas behind the vaporization cooling flue cooling under the fan effect, puts out a fire, cools down, coarse dust removal to the flue gas by it, forms the flue gas of the degree of about 200 and then gets into the electrostatic precipitator on ground and carries out the fine dust removal, gets into the coal gas switching station behind the high temperature fan again: when the gas recovery condition is not met, the flue gas enters the diffusing side to be ignited and diffused; when the coal gas recovery condition is met, the flue gas enters a recovery side, and the flue gas enters a gas chamber for recovery after being cooled further. The dust removal effect of the dry method can reach 50mg/m of emission3The dust removal mode with better dust removal effect is as follows. The method comprises the steps that the temperature of primary flue gas (1400-1600 ℃) of the existing converter is reduced to 800-1000 ℃ through a gasification cooling flue, the temperature of the flue gas is reduced to 280-350 ℃ through an evaporative cooler, the flue gas cooled by the evaporative cooler is naturally cooled to 160-200 ℃ through a raw gas pipeline and enters a dry-method electric dust remover, clean flue gas treated by the dry-method electric dust remover is reduced to below 70 ℃ through a gas cooler, and the requirements of different flue gas components are metAnd when the recovery condition is met, the flue gas enters the gas chamber through the recovery cup valve, and the flue gas which does not meet the recovery condition enters the chimney through the diffusing cup valve to be discharged.
However, due to different sites of different projects, the distance between the flue gas cooled by the evaporative cooler and the raw gas pipeline is different, and the temperature change range of the flue gas entering the electric dust remover is larger. For example, a dry dedusting project is changed from one-time flue gas wet dedusting of a converter, the site is generally tense, a deduster is generally arranged near the outside of a converter plant, a raw gas pipeline from an evaporative cooler to an electric deduster is short, the temperature of the raw gas pipeline entering the electric deduster is high, and in order to meet the temperature of the inlet of the electric deduster, the length of the raw gas pipeline is specially lengthened, so that the raw gas pipeline is naturally cooled to be below 200 ℃ and enters the electric deduster. The higher the flue gas temperature is, the larger the flue gas quantity is, the larger the model selection specification of subsequent process equipment such as an electric dust remover, a fan, a clean gas pipeline, a gas cooler, a water treatment system and the like is, and meanwhile, the higher the flue gas temperature is, the higher the specific resistance of dust in the flue gas is, so that the dust is not favorably caught by the electric dust remover. The process adopts a coal cooling forward moving technology, the temperature of cooled flue gas is lower than 70 ℃, a clean gas pipeline and a chimney have certain corrosion, and the requirement on corrosion resistance of equipment is high; the outlet temperature of the chimney is low, the diffused coal gas is not easy to ignite by the diffusion ignition device, and the white smoke phenomenon exists in the smoke; the temperature of flue gas entering the electric dust collector is high, the higher the temperature of dust in the flue gas is, the fine ash collected by the electric dust collector at present is conveyed to the fine ash bin, the temperature of the fine ash in the ash bin is high, a bag is easy to burn on a cloth bag at the top of the bin, and the temperature of the fine ash required by ash unloading of a tank truck cannot be too high.
Disclosure of Invention
The purpose of the invention is: the device for low-temperature electric dust removal and white removal of the flue gas of the converter primary flue gas effectively reduces the temperature of the flue gas before entering the electric dust remover, improves the dust removal efficiency and also solves the problem of white smoke emission of a chimney.
In order to achieve the purpose, the invention provides a converter primary flue gas low-temperature electric precipitation and flue gas de-whitening device, which comprises: the converter, the evaporative cooler, the electric dust remover, the gas cooler and the valve body are sequentially connected through pipelines, and the valve body is respectively connected with the gas tank and the chimney through pipelines;
the first heat exchange device is used for cooling the flue gas in a pipeline connected with the evaporative cooler and the electric dust remover;
and the second heat exchange device is used for heating the flue gas in the pipeline connected with the valve body and the chimney.
Furthermore, a pipeline is arranged between the first heat exchange device and the second heat exchange device for connection, and a heat exchange medium circularly flows in a pipeline between the first heat loading device and the second heat exchange device for heat exchange.
Further, the entrance of electrostatic precipitator is provided with temperature-detecting device, temperature-detecting device with first heat transfer device electricity is connected.
The converter further comprises a fan, the fan is arranged on a pipeline between the converter and the valve body, the first heat exchange device comprises a variable frequency pump, the variable frequency pump is respectively electrically connected with the fan and the temperature detection device, and the variable frequency pump is used for controlling the circulation flow of a heat exchange medium in the first heat exchange device.
Furthermore, a throttling valve is arranged on a pipeline connected with the first heat exchange device and the second heat exchange device, the throttling valve is respectively and electrically connected with the fan and the temperature detection device, and the throttling valve controls the circulation flow of the heat exchange medium between the first heat exchange device and the second heat exchange device.
Furthermore, a heat insulation sleeve is wrapped on a part of pipelines connected between the converter and the electric dust collector.
Further, the valve body is a three-way valve and comprises a first port, a second port and a third port, the first port is connected with the gas cooler, the second port is connected with the chimney, and the third port is connected with the gas cabinet.
Further, still including the ash bin, the ash bin with the electrostatic precipitator is connected, converter flue gas outlet end is provided with the petticoat pipe.
Furthermore, a first cooling water pipe is connected to the evaporative cooler, and a second cooling water pipe is connected to the gas cooler.
A method for low-temperature electric dust removal and flue gas dislocation of primary flue gas of a converter uses the low-temperature electric dust removal and flue gas whitening device of the primary flue gas of the converter, and comprises the following specific steps: flue gas from the converter enters an evaporative cooler through a pipeline to be cooled, the flue gas is cooled and then enters an electric dust collector to be dedusted after being subjected to heat exchange and temperature reduction through a first heat exchange device, the flue gas after dedusting is cooled through a gas cooler and then enters a valve body, the flue gas which is judged to be unqualified is screened and judged through the valve body and then is conveyed to a chimney to be diffused, the flue gas is heated through a second heat exchange device before entering the chimney and then is diffused from the chimney, and a heat exchange medium is kept to flow circularly between the first heat exchange device and the second heat exchange device in a flue gas.
Further, still include the fan, the electrostatic precipitator entrance is provided with temperature-detecting device for detect the flue gas temperature of electrostatic precipitator entrance, first heat transfer device is including the inverter pump, the inverter pump respectively with temperature-detecting device, fan electricity are connected, the inverter pump basis the first heat transfer device's of fan operating frequency and flue gas temperature adjustment heat transfer medium circulation flow.
Compared with the prior art, the device and the method for low-temperature electric dust removal and smoke whitening of the primary smoke of the converter have the beneficial effects that: the first heat exchange device is used for cooling the flue gas entering the electric dust remover, so that the dust removal efficiency of the electric dust remover is effectively improved; the second heat exchange device is used for heating the flue gas diffused in the chimney, so that the corrosion to the pipeline and the chimney is reduced, and the problem that the white smoke is emitted from the chimney is effectively solved; further, a heat exchange medium between the first heat exchange device and the second heat exchange device circularly flows, and the high-temperature heat exchange of the first heat exchange device is carried out to the second heat exchange device, so that the latent heat of the smoke at the front end is effectively utilized.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention.
In the figure, 1, a converter; 2. an evaporative cooler; 3. an electric dust collector; 4. a fan; 5. a gas cooler; 6. a valve body; 7. a chimney; 8. a first heat exchange means; 9. a second heat exchange means; 10. a gas cabinet; 11. a smoke hood; 12. a first cooling water pipe; 13. a second cooling water pipe; 14. an ash bin; 15. a vaporization cooling conduit; 16. a tank car; 17. a pressurization station; 18. a gas mixing station.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1: a converter primary flue gas low-temperature electric dust removal and flue gas de-whitening device.
As shown in fig. 1, a converter primary flue gas low-temperature electric precipitation and flue gas whitening device according to a preferred embodiment of the present invention includes a converter 1, an evaporative cooler 2, an electric precipitator 3, a fan 4, a gas cooler 5, a valve body 6, a gas holder 10 and a chimney 7, wherein the converter 1, the evaporative cooler 2, the electric precipitator 3, the fan 4, the gas cooler 5 and the valve body 6 are sequentially connected through a pipeline, and the valve body 6 is respectively connected with the gas holder 10 and the chimney 7 through pipelines; the first heat exchange device 8 is arranged on a pipeline for connecting the evaporative cooler 2 and the electric dust collector 3; the second heat exchange device 9 is arranged on a pipeline connected with the valve body 6 and the chimney 7, and the second heat exchange device 9 is arranged on the pipeline; the first heat exchange device 8 is connected with the second heat exchange device 9 through a pipeline, and a heat exchange medium circularly flows through the pipeline between the first heat exchange device 8 and the second heat exchange device 9 for heat exchange.
Based on above-mentioned scheme, the heat transfer is carried out with the high temperature flue gas to first heat transfer device 8 that sets up before electrostatic precipitator 3, and the flue gas temperature that gets into electrostatic precipitator 3 reduces to meeting the requirements, and electrostatic precipitator 3's dust collection efficiency obtains further improvement. The main effect of the second heat exchange device 9 arranged in front of the chimney 7 is to heat low-temperature flue gas, the heat of the second heat exchange device 9 is obtained by exchanging heat with the first heat exchange device 8, a heat exchange medium circulates between the first heat exchange device 8 and the second heat exchange device 9, the high temperature of the first heat exchange device 8 is exchanged to the second heat exchange device 9, the second heat exchange device 9 heats low-temperature flue gas in front of the chimney 7, the corrosion of low-temperature wet flue gas to the pipeline and the chimney 7 is relieved, and the phenomenon that white smoke is emitted from the chimney 7 is solved simultaneously.
Preferably, 3 entrances of electrostatic precipitator are provided with temperature-detecting device, temperature-detecting device is used for detecting the temperature information of 3 entrances flue gases of electrostatic precipitator, temperature-detecting device with 8 electricity of first heat transfer device are connected. The flue gas temperature at the inlet of the electric dust collector 3 is detected in real time, the temperature information is fed back to the first heat exchange device 8, the first heat exchange device 8 adjusts the flow of a heat exchange medium according to the fed-back temperature information so as to adjust the heat exchange efficiency, so that when the flue gas temperature is too low, the heat exchange efficiency is properly reduced, and the temperature is ensured to meet the requirement; when the temperature is too high, the flow of the heat exchange medium is correspondingly increased to improve the heat exchange efficiency and ensure that the temperature of the flue gas meets the requirement.
Preferably, the first heat exchange device 8 comprises a variable frequency pump, the variable frequency pump is electrically connected with the fan 4 and the temperature detection device respectively, and the variable frequency pump is used for controlling the circulation flow of the heat exchange medium in the first heat exchange device 8. The heat exchange medium circulation flow of the first heat exchange device 8 needs to be adjusted adaptively according to the changes of the flue gas volume and the inlet flue gas temperature of the electric dust remover 3, the inlet flue gas temperature of the electric dust remover 3 is detected in real time by adopting a temperature detection device, the flue gas volume is controlled by a frequency converter of the fan 4, and the set frequency conversion pump is comprehensively controlled according to the frequency converter frequency of the fan 4 and the inlet temperature of the electric dust remover 3. Through accurately adjusting the circulation flow of the heat exchange medium, the heat exchange medium and the flue gas carry out non-contact heat exchange, the temperature of the flue gas entering the inlet of the electric dust remover 3 is reduced to 120 ℃, the dust-containing flue gas amount is reduced by about 17%, the specific resistance of the dust in the flue gas is further reduced, the dust removal efficiency of the electric dust remover 3 can be further improved, and the specification of subsequent process equipment can be properly reduced. In addition, after the temperature of the flue gas is reduced, the consumption of cooling water is reduced by about 50-60%.
Preferably, a throttle valve is arranged on a pipeline connecting the first heat exchange device 8 and the second heat exchange device 9, the throttle valve is electrically connected with the fan 4 and the temperature detection device respectively, and the throttle valve controls the circulation flow of the heat exchange medium between the first heat exchange device 8 and the second heat exchange device 9. The difference of flue gas temperature under the different conditions is considered, and when the temperature of the heat transfer medium after the heat transfer of the first heat transfer device 8 is judged to be high according to the information fed back by the frequency converter of the fan 4 and the temperature detection device, the circulating flow of the heat transfer medium between the first heat transfer device 8 and the second heat transfer device 9 can be controlled through the throttle valve, so that excessive heat transfer is avoided, and the temperature of the diffused flue gas after the heating of the second heat transfer device 9 is caused to be too high. Similarly, aiming at the condition that the temperature of the heat exchange medium is low after possible heat exchange, the circulation flow of the heat exchange medium between the first heat exchange device 8 and the second heat exchange device 9 can be increased, so that the second heat exchange device 9 can heat the flue gas before diffusion by enough heat.
Preferably, a heat insulation sleeve is wrapped on a part of pipelines connected between the converter 1 and the electric dust collector 3. To the project that the place is more abundant, the pipeline of connection is longer, the flue gas probably appears the temperature condition on the low side after long pipeline cooling, to this kind of condition preferential heat preservation to the pipeline and handle, heat preservation here can select partial heat preservation or whole heat preservation according to actual conditions, partial heat preservation is general to flue gas temperature decline degree, whole heat preservation then is to the severe condition of flue gas temperature decline, through keeping warm to the pipeline, can effectively utilize the latent heat of flue gas, the flue gas temperature of guaranteeing to get into electrostatic precipitator simultaneously is not less than 100 ℃.
Preferably, the valve body 6 is a three-way valve, which includes a first port, a second port and a third port, the first port is connected to the gas cooler 5, the second port is connected to the chimney 7, and the third port is connected to the gas holder 10. Every opening of the three-way valve that sets up all sets up independent valve and controls and open or close, and the flue gas through fan 4 and coal gas cooler 5 shunts in three-way valve department, and the flue gas that does not satisfy the coal gas recovery condition gets into chimney 7 through the second opening and then diffuses, and the flue gas that satisfies the coal gas recovery condition then gets into gas chamber 10 through the third opening and is used for retrieving subsequent utilization.
Preferably, the gas holder 10 is further connected with a pressurizing station 17 and a gas mixing station 18 in sequence. The flue gas stored in the gas tank 10 is pressurized by a pressurizing station 17 and mixed by a gas mixing station 18, and then is conveyed to a user for use.
Preferably, the device also comprises an ash bin 14, wherein the ash bin 14 is connected with the electric dust collector 3, and a smoke hood 11 is arranged at the smoke outlet end of the converter 1. Converter 1 passes through petticoat pipe 11 connecting tube, and the pipeline specifically is vaporization cooling pipeline 15, through petticoat pipe 11 swing joint, can adjust the direction of flue gas, and the actual installation condition according to vaporization cooling pipeline 15 is more convenient to be adjusted. The top of the ash bin 14 is also provided with a cloth bag, after the temperature of the flue gas entering the electric dust collector 3 is reduced, the temperature of particulate matters and dust in the flue gas is correspondingly reduced, the risk of burning the cloth bag at the top of the ash bin 14 is correspondingly reduced, and the reduction of the temperature of the dust in the ash bin 14 is favorable for discharging the ash. The dust stored in the dust bin 14 is ultimately unloaded and carried away by the tanker 16.
Preferably, a first cooling water pipe 12 is connected to the evaporative cooler 2, and a second cooling water pipe 13 is connected to the gas cooler 5. First condenser tube 12 connects the cold water pipe and is used for cooling the flue gas that gets into evaporative cooler 2, still lets in saturated vapor or nitrogen gas auxiliary cooling simultaneously to guarantee that the cooling effect is better. The second cooling water pipe 13 is also connected with a cold water pipe for cooling the flue gas entering the gas cooler 5, and in addition, the second cooling water pipe 13 is also a circulating pipeline, and the cold water entering the gas cooler 5 cools and discharges the flue gas for cyclic utilization, so that water resources are better saved.
In conclusion, the primary flue gas low-temperature electric dust removal and flue gas whitening device for the converter provided by the embodiment makes full use of the latent heat of the front-end high-temperature flue gas to solve the problem that the chimney 7 emits white smoke; the reduction of the front-end flue gas temperature is beneficial to reducing the specification and size of the electric dust collector 3, the fan 4, the pipeline, the gas cooler 5, the valve body 6 and other equipment, and reducing the engineering construction cost; the dust removal efficiency of the electric dust remover 3 is improved, the use amount of cooling water is reduced, and the power consumption of equipment is reduced; in addition, the risk of burning the cloth bag at the top of the ash bin 14 is reduced, and the requirement of the tank car 16 for ash discharge on low ash temperature is met.
Example 2: a method for low-temperature electric dust removal and flue gas dislocation of primary flue gas of a converter.
The embodiment provides a method for low-temperature electric dust removal and flue gas dislocation of primary flue gas of a converter, which uses the device for low-temperature electric dust removal and flue gas whitening of the primary flue gas of the converter in the embodiment 1, and comprises the following specific steps: flue gas that comes out by converter 1 gets into evaporative cooler 2 through the pipeline and cools off, after the cooling down through the heat transfer of first heat transfer device 8 the back electric dust remover 3 removes dust, flue gas that the dust removal was accomplished gets into valve body 6 after 5 coolings on the coal gas cooler, filter through valve body 6 and judge flue gas that is not conform to the requirement and carry to chimney 7 and diffuse, flue gas gets into chimney 7 before and then diffuses from chimney 7 after second heat transfer device 9 heaies up, keep heat transfer medium circulation flow between first heat transfer device 8 and second heat transfer device 9 in the flue gas recovery process.
Preferably, 3 entrances of electrostatic precipitator are provided with temperature-detecting device for detect the flue gas temperature of 3 entrances of electrostatic precipitator, first heat transfer device 8 is including the inverter pump, the inverter pump respectively with temperature-detecting device, 4 electricity connections of fan, the inverter pump basis 4 operating frequency of fan and the heat transfer medium circulation flow of the first heat transfer device 8 of flue gas temperature adjustment.
Preferably, the valve body 6 is further connected with a gas tank 10, and the flue gas which meets the requirements after being screened by the valve body 6 enters the gas tank 10 for storage.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (10)

1. Converter flue gas low temperature electrostatic precipitator and flue gas take off white device once, its characterized in that includes:
the converter, the evaporative cooler, the electric dust remover, the gas cooler and the valve body are sequentially connected through pipelines, and the valve body is respectively connected with the gas tank and the chimney through pipelines;
the first heat exchange device is used for cooling the flue gas in a pipeline connected with the evaporative cooler and the electric dust remover;
and the second heat exchange device is used for heating the flue gas in the pipeline connected with the valve body and the chimney.
2. The converter primary flue gas low-temperature electric precipitation and flue gas whitening device of claim 1, wherein a pipeline is arranged between the first heat exchange device and the second heat exchange device for connection, and a heat exchange medium circularly flows through a pipeline between the first heat loading device and the second heat exchange device for heat exchange.
3. The converter primary flue gas low-temperature electric precipitation and flue gas de-whitening device as claimed in claim 1, wherein a temperature detection device is arranged at an inlet of the electric precipitator, and the temperature detection device is electrically connected with the first heat exchange device.
4. The converter primary flue gas low-temperature electric precipitation and flue gas whitening device of claim 3, further comprising a fan, wherein the fan is arranged on a pipeline between the converter and the valve body, the first heat exchange device comprises a variable frequency pump, the variable frequency pump is respectively electrically connected with the fan and the temperature detection device, and the variable frequency pump is used for controlling the circulation flow of a heat exchange medium in the first heat exchange device.
5. The converter primary flue gas low-temperature electric precipitation and flue gas whitening device according to claim 4, wherein a throttle valve is arranged on a pipeline connecting the first heat exchange device and the second heat exchange device, the throttle valve is electrically connected with the fan and the temperature detection device respectively, and the throttle valve controls the circulation flow of a heat exchange medium between the first heat exchange device and the second heat exchange device.
6. The primary flue gas low-temperature electric precipitation and flue gas de-whitening device of the converter as claimed in claim 1, wherein a part of pipelines connected between the converter and the electric precipitator is wrapped with a heat insulation sleeve.
7. The converter primary flue gas low-temperature electric precipitation and flue gas de-whitening device according to claim 1, further comprising an ash bin, wherein the ash bin is connected with the electric precipitator, and a smoke hood is arranged at a flue gas outlet end of the converter.
8. The converter primary flue gas low-temperature electric precipitation and flue gas whitening device of claim 1, wherein a first cooling water pipe is connected to the evaporative cooler, and a second cooling water pipe is connected to the coal gas cooler.
9. The method for low-temperature electric dust removal and flue gas dislocation of primary flue gas of the converter is characterized by comprising the following steps of: flue gas from the converter enters an evaporative cooler through a pipeline to be cooled, the flue gas is cooled and then enters an electric dust collector to be dedusted after being subjected to heat exchange and temperature reduction through a first heat exchange device, the flue gas after dedusting is cooled through a gas cooler and then enters a valve body, the flue gas which is judged to be unqualified is screened and judged through the valve body and then is conveyed to a chimney to be diffused, the flue gas is heated through a second heat exchange device before entering the chimney and then is diffused from the chimney, and a heat exchange medium is kept to flow circularly between the first heat exchange device and the second heat exchange device in a flue gas.
10. The method for low-temperature electric dust removal and flue gas dislocation of primary flue gas of the converter according to claim 9, further comprising a fan, wherein a temperature detection device is arranged at an inlet of the electric dust remover and used for detecting the flue gas temperature at the inlet of the electric dust remover, the first heat exchange device comprises a variable frequency pump, the variable frequency pump is respectively electrically connected with the temperature detection device and the fan, and the variable frequency pump adjusts the circulation flow rate of a heat exchange medium of the first heat exchange device according to the operating frequency of the fan and the flue gas temperature.
CN202010965348.XA 2020-09-15 2020-09-15 Device and method for low-temperature electric dust removal and smoke whitening of primary smoke of converter Pending CN112029953A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5644710A (en) * 1979-09-18 1981-04-24 Sumitomo Metal Ind Ltd Waste heat recovery method of converter gas
CN103968401A (en) * 2014-04-18 2014-08-06 华北电力大学 Dedusting, desulfuration and waste-heat utilization integrated system with low PM2.5 emission
CN205170902U (en) * 2015-11-06 2016-04-20 西安西矿环保科技有限公司 Converter coal gas dry cleaning recovery system
CN110726153A (en) * 2019-09-27 2020-01-24 华电电力科学研究院有限公司 Coal-fired power plant flue gas whitening elimination system and method
CN212610749U (en) * 2020-09-15 2021-02-26 西安西矿环保科技有限公司 Low-temperature electric dust removal and smoke whitening device for primary smoke of converter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5644710A (en) * 1979-09-18 1981-04-24 Sumitomo Metal Ind Ltd Waste heat recovery method of converter gas
CN103968401A (en) * 2014-04-18 2014-08-06 华北电力大学 Dedusting, desulfuration and waste-heat utilization integrated system with low PM2.5 emission
CN205170902U (en) * 2015-11-06 2016-04-20 西安西矿环保科技有限公司 Converter coal gas dry cleaning recovery system
CN110726153A (en) * 2019-09-27 2020-01-24 华电电力科学研究院有限公司 Coal-fired power plant flue gas whitening elimination system and method
CN212610749U (en) * 2020-09-15 2021-02-26 西安西矿环保科技有限公司 Low-temperature electric dust removal and smoke whitening device for primary smoke of converter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
高燕军;王艳婷;巩丹卫;: "转炉煤气干法除尘系统低排放技术探讨" *

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Application publication date: 20201204