CN204275731U - A kind of environment-protecting industrial silicon electric furnace flue gas treatment system - Google Patents
A kind of environment-protecting industrial silicon electric furnace flue gas treatment system Download PDFInfo
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- CN204275731U CN204275731U CN201420669865.2U CN201420669865U CN204275731U CN 204275731 U CN204275731 U CN 204275731U CN 201420669865 U CN201420669865 U CN 201420669865U CN 204275731 U CN204275731 U CN 204275731U
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- flue gas
- electric furnace
- dust
- precipitator
- treatment system
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Abstract
The utility model discloses a kind of environment-protecting industrial silicon electric furnace flue gas treatment system, low hood is located at the top of electric furnace, water wash tower, dust-precipitator, desulfurizer, the middle and lower part that decarbonization device utilizes pipeline to connect water wash tower is successively provided with overflow pipe, overflow pipe is provided with the heat exchanger overflow pipe other end and is connected with water circulation settling tank, the middle and upper part of water circulation settling tank is established water pump and is connected with shower nozzle by pipeline, heat exchanger is connected with heat exchange medium container, dust-precipitator is rotoclone collector, desulfurizer, desulfurization solvent and decarbonization solvent is respectively equipped with in decarbonization device, the top of decarbonization device is provided with the recovery that pollutant testing apparatus native system can carry out the SiO2 dust in flue gas, remove the pernicious gas SO2 in flue gas, CO2 qualified discharge, also can the heat in flue gas be recycled, there is good effects of energy saving and emission reduction.
Description
Technical field
The utility model belongs to industrial silicon production equipment technical field, particularly the smoke processing system of metal-silicon furnace.
Background technology
Industrial silicon to be silicon purity be 97 ~ 98% metallic silicon, normally obtained by carbon reduction silica in electric furnace, can discharge the high-temperature flue gas such as a large amount of SiO2 dust and CO2, SO2 during electric furnace smelting industrial silicon, this flue gas is large to ambient influnence, therefore generally all needs to carry out processing rear discharge.Existing industrial silicon treatment system generally adopts dry method dust, mainly comprise low hood, pipe-line system, cyclone system, airduct cooling system, sack cleaner, dedusting fan, deashing device etc., along with the raising that country requires energy-saving and emission-reduction, to the CO2 in industrial silicon flue gas, the discharge index of SO2 requires also more and more stricter, at present, there is the treating apparatus removing SO2 for this flue gas, as patent CN 103285998 A discloses a kind of gas cleaning for smelting industrial silicon electric furnace and silicon powder recovery system, this system is by wet dust removal, desulfurization, dewatering integrated tower and wet separation density tower and the arrangement of centrifugal spray drying tower order connect to form, although this invention achieves desulfurization, the effects such as dedusting, but yet there is some problems, as complex process equipment, heat in flue gas cannot be recycled, unprocessed discharge of a large amount of CO2 etc.
Summary of the invention
The purpose of this utility model is to solve problems of the prior art, provide a kind of environment-protecting industrial silicon electric furnace flue gas treatment system, utilize present treatment system, the recovery of the SiO2 dust in flue gas can be carried out, pernicious gas SO2, the CO2 in flue gas can be removed and qualified discharge, and also can the heat in flue gas be recycled, there is good effects of energy saving and emission reduction.
The technical solution of the utility model is:
A kind of environment-protecting industrial silicon electric furnace flue gas treatment system, primarily of electric furnace, low hood, water wash tower, dust-precipitator, desulfurizer, decarbonization device forms, low hood is located at the top of electric furnace, water wash tower, dust-precipitator, desulfurizer, decarbonization device utilizes pipeline to connect successively, low hood outlet conduit is provided with blower fan, the top of water wash tower is provided with shower nozzle, the middle and lower part of water wash tower is provided with overflow pipe, overflow pipe is provided with the heat exchanger overflow pipe other end and is connected with water circulation settling tank, the middle and upper part of water circulation settling tank is established water pump and is connected with shower nozzle by pipeline, heat exchanger is connected with heat exchange medium container, dust-precipitator is rotoclone collector, desulfurizer, desulfurization solvent and decarbonization solvent is respectively equipped with in decarbonization device, the top of decarbonization device is provided with pollutant testing apparatus, the middle and upper part of decarbonization device is provided with gas backstreaming pipe, gas backstreaming pipe be provided with magnetic valve and by arm respectively with the air inlet pipe of dust-precipitator, the air inlet pipe of desulfurizer connects.
Described dust-precipitator is secondary rotoclone collector.
The overflow pipe place of described water wash tower middle and lower part is provided with filter, and is provided with baffle plate in gas feed place.
Described heat exchanger is tube-in-tube heat exchanger, and the heat exchange medium set in heat exchange medium container is connected with hot-water line between bathing as water, heat exchange medium container.
Described arm is provided with magnetic valve.
Described pollutant testing apparatus, magnetic valve are connected with master control system by holding wire, are provided with dust detector, SO2 detector and CO2 detector in pollutant testing apparatus.
Described desulfurization solvent is calcium carbonate or sodium carbonate liquor.
Described decarbonization solvent is methyl alcohol or carbonic allyl ester solution.
Pressure-detecting device and pressure relief device is respectively equipped with in described dust-precipitator, desulfurizer, decarbonization device.
In the utility model: after the high-temperature flue gas that electric furnace produces is collected by low hood, be extracted in water wash tower by blower fan, first by water wash method, big dust particle in flue gas is removed, utilize water cool flue gas and carry out heat exchange simultaneously, and absorption portion CO2, hot water is derived and is utilized heat exchanger to output in water circulation settling tank after heat absorption by the overflow pipe of water wash tower middle and upper part, flue gas after water wash collects SiO2 fine particle through dust-precipitator again, recycling desulfurizer, decarbonization device removes the SO2 in waste gas, and qualified discharge after CO2 oxious component.Sediment in water circulation settling tank is regularly discharged, melt down use after drying.
The beneficial effects of the utility model and advantage are:
1, present treatment system can carry out effective recovery of the SiO2 dust in flue gas, remove pernicious gas SO2, the CO2 in flue gas and qualified discharge, to the handling rate of SO2, CO2 more than 95%, also the heat in flue gas can be recycled simultaneously, there is good effects of energy saving and emission reduction;
2, it is convenient that native system structure is simple, operation runs, and labour intensity is low.
Accompanying drawing explanation
Fig. 1 is environment-protecting industrial silicon electric furnace flue gas treatment system structural representation of the present utility model;
In figure: 1-electric furnace, 2-low hood, 3-blower fan, 4-water wash tower, 5-shower nozzle, 6-baffle plate, 7-dust-precipitator, 8-desulfurizer, 9-pollutant testing apparatus, 10-decarbonization device, 11-magnetic valve, 12-heat exchanger, 13-heat exchange medium container, 14-water circulation settling tank.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, but should not be interpreted as that the scope of theme described in the utility model is only limitted to following embodiment at this point, do not departing from the above-mentioned technological thought situation of the utility model, all make according to ordinary skill knowledge and customary means various amendments, replacement and change, include in scope of the present utility model.
As shown in Figure 1, a kind of environment-protecting industrial silicon electric furnace flue gas treatment system, primarily of electric furnace 1, low hood 2, water wash tower 4, dust-precipitator 7, desulfurizer 8, decarbonization device 10 forms, low hood 2 is located at the top of electric furnace 1, water wash tower 4, dust-precipitator 7, desulfurizer 8, decarbonization device 10 utilizes pipeline to connect successively, low hood 2 outlet conduit is provided with blower fan 3, the top of water wash tower 4 is provided with shower nozzle 5, the middle and lower part of water wash tower 4 is provided with overflow pipe, overflow pipe is provided with the heat exchanger 12 overflow pipe other end and is connected with water circulation settling tank 14, the middle and upper part of water circulation settling tank 14 is established water pump and is connected with shower nozzle 5 by pipeline, heat exchanger 12 is connected with heat exchange medium container 13, dust-precipitator 7 is rotoclone collector, desulfurizer 8, desulfurization solvent and decarbonization solvent is respectively equipped with in decarbonization device 10, the top of decarbonization device 10 is provided with pollutant testing apparatus 9, the middle and upper part of decarbonization device 10 is provided with gas backstreaming pipe, gas backstreaming pipe be provided with magnetic valve 11 and by arm respectively with the air inlet pipe of dust-precipitator 7, the air inlet pipe of desulfurizer 8 connects.
Further, described dust-precipitator 7 is secondary rotoclone collector, can further improve the collecting effect to SiO2 fine dust, can reduce the Dust Capacity in efflux gas on the one hand, can promote the recycling efficiency of resource on the other hand.
Further, the overflow pipe place of described water wash tower 4 middle and lower part is provided with filter, to prevent overflow pipe from blocking, is provided with baffle plate 6 in gas feed place, and object is to utilize the bulky grain solid in the barrier effect collection flue gas of baffle plate 6.
Further, described heat exchanger 12 is tube-in-tube heat exchanger, and the heat exchange medium set in heat exchange medium container 13 is connected with hot-water line between bathing as water, described heat exchange medium container 13, the heat of collection can be used for plant personnel bathing and use.
Further, described arm is provided with magnetic valve 11.
Further, described pollutant testing apparatus 9, magnetic valve 11 are connected with master control system by holding wire, dust detector, SO2 detector and CO2 detector is provided with in pollutant testing apparatus 9, respectively dust, SO2, CO2 are detected, when testing result exceeds standard, the magnetic valve 11 pairs of gases utilizing control system to open on gas backstreaming pipe and arm carry out after-treatment.
Further, described desulfurization solvent is calcium carbonate or sodium carbonate liquor, and described decarbonization solvent is methyl alcohol or carbonic allyl ester solution.
Further, be respectively equipped with pressure-detecting device and pressure relief device in described dust-precipitator 7, desulfurizer 8, decarbonization device 10, to guarantee system pressure safety, prevention security incident occurs.
The above is only a preferred embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the protection domain of the utility model patent application.
Claims (6)
1. an environment-protecting industrial silicon electric furnace flue gas treatment system, primarily of electric furnace (1), low hood (2), water wash tower (4), dust-precipitator (7), desulfurizer (8), decarbonization device (10) forms, low hood (2) is located at the top of electric furnace (1), water wash tower (4), dust-precipitator (7), desulfurizer (8), decarbonization device (10) utilizes pipeline to connect successively, low hood (2) outlet conduit is provided with blower fan (3), it is characterized in that the top of water wash tower (4) is provided with shower nozzle (5), the middle and lower part of water wash tower (4) is provided with overflow pipe, overflow pipe is provided with heat exchanger (12) its other end and is connected with water circulation settling tank (14), the middle and upper part of water circulation settling tank (14) is established water pump and is connected with shower nozzle (5) by pipeline, heat exchanger (12) is connected with heat exchange medium container (13), dust-precipitator (7) is rotoclone collector, desulfurizer (8), decarbonization device is respectively equipped with desulfurization solvent and decarbonization solvent in (10), the top of decarbonization device (10) is provided with pollutant testing apparatus (9), the middle and upper part of decarbonization device (10) is provided with gas backstreaming pipe, gas backstreaming pipe be provided with magnetic valve (11) and by arm respectively with the air inlet pipe of dust-precipitator (7), the air inlet pipe of desulfurizer (8) connects,
(10) are respectively equipped with pressure-detecting device and pressure relief device for described dust-precipitator (7), desulfurizer (8), decarbonization device.
2. environment-protecting industrial silicon electric furnace flue gas treatment system according to claim 1, is characterized in that described dust-precipitator (7) is for secondary rotoclone collector.
3. environment-protecting industrial silicon electric furnace flue gas treatment system according to claim 1, is characterized in that described heat exchanger (12) is tube-in-tube heat exchanger, and the heat exchange medium set in heat exchange medium container (13) is as water.
4. environment-protecting industrial silicon electric furnace flue gas treatment system according to claim 3, is characterized in that described heat exchange medium container (13) is connected with hot-water line between bathing.
5. environment-protecting industrial silicon electric furnace flue gas treatment system according to claim 1, is characterized in that described desulfurization solvent is calcium carbonate or sodium carbonate liquor.
6. environment-protecting industrial silicon electric furnace flue gas treatment system according to claim 1, is characterized in that described decarbonization solvent is methyl alcohol or carbonic allyl ester solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669865.2U CN204275731U (en) | 2014-11-12 | 2014-11-12 | A kind of environment-protecting industrial silicon electric furnace flue gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420669865.2U CN204275731U (en) | 2014-11-12 | 2014-11-12 | A kind of environment-protecting industrial silicon electric furnace flue gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204275731U true CN204275731U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420669865.2U Expired - Fee Related CN204275731U (en) | 2014-11-12 | 2014-11-12 | A kind of environment-protecting industrial silicon electric furnace flue gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204275731U (en) |
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2014
- 2014-11-12 CN CN201420669865.2U patent/CN204275731U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Lin Inventor after: Su Yuanjuan Inventor before: Liu Chao |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170525 Address after: 400000 No. 1, unit 55, Chongqing village, Yuzhong District, Chongqing 11-1 Patentee after: CHONGQING RONGZHI ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: 518000 Guangdong city of Shenzhen province Futian District Fuhua Road No. 6 Building 1403 business tax Patentee before: Liu Chao |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20211112 |