CN101306312A - Flue gas cleaning treatment method during producing carbon product - Google Patents
Flue gas cleaning treatment method during producing carbon product Download PDFInfo
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- CN101306312A CN101306312A CNA2008101154410A CN200810115441A CN101306312A CN 101306312 A CN101306312 A CN 101306312A CN A2008101154410 A CNA2008101154410 A CN A2008101154410A CN 200810115441 A CN200810115441 A CN 200810115441A CN 101306312 A CN101306312 A CN 101306312A
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- flue gas
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- calcining furnace
- dust
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- 239000003546 flue gas Substances 0.000 title claims abstract description 87
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 68
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 20
- 238000004140 cleaning Methods 0.000 title claims description 7
- 239000007789 gas Substances 0.000 claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 claims abstract description 52
- 238000001354 calcination Methods 0.000 claims abstract description 43
- 239000000428 dust Substances 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 239000002671 adjuvant Substances 0.000 claims abstract description 12
- 238000003837 high-temperature calcination Methods 0.000 claims abstract description 3
- 238000007599 discharging Methods 0.000 claims description 41
- 238000009413 insulation Methods 0.000 claims description 20
- 239000002918 waste heat Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000003245 coal Substances 0.000 claims description 10
- 238000006477 desulfuration reaction Methods 0.000 claims description 10
- 230000023556 desulfurization Effects 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000003672 processing method Methods 0.000 claims description 5
- 239000002817 coal dust Substances 0.000 claims description 4
- 239000003034 coal gas Substances 0.000 claims description 4
- 239000000295 fuel oil Substances 0.000 claims description 4
- 230000032696 parturition Effects 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 4
- 239000010426 asphalt Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000006115 defluorination reaction Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 235000019504 cigarettes Nutrition 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000011295 pitch Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 239000003183 carcinogenic agent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005200 wet scrubbing Methods 0.000 description 1
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Abstract
The invention relates to a flue gas purifying treatment method during the production process of carbon products. The flue gas purifying treatment method is characterized in that the treatment process directly sends flue gas produced in the production process of a green electrode into a calcining furnace for high-temperature calcination, high-temperature gas after the calcination is mixed with low-temperature gas emitted from a roasting furnace, the mixed calcination is carried out under the high temperature via sufficient calorific value thereof or with the help of a combustion adjuvant, the high-temperature gas emitted after the calcination is taken as a heat source to be directly sent to a boiler, the gas emitted from the boiler is finally subjected to desulphurization and defluorination treatment, then a part of the purified gas is returned to the production process of the green electrode, a pipeline is heated and subjected to the temperature keeping during the process of sending the dust collecting flue gas produced during the process to the calcining furnace, and the residual purified gas is subjected to the high-altitude emission. The method of the invention can thoroughly treat the harmful substances in the flue gas and comprehensively take into account the actual production conditions and the heat of the emitted flue gas of various work segments, the process flow is simple, the operation is convenient and the treatment cost is low.
Description
Technical field
The present invention relates to the flue gas cleaning treatment method in a kind of carbon product production process.
Background technology
The Hall-Heroult electrolysis process is adopted in primary aluminum production.The used carbon resistance rod of this technology (comprising negative electrode, anode) be by carbonaceous aggregates such as after-smithing petroleum coke, anthracite and coal tar pitch through overmulling pinch, moulding and high-temperature roasting form.In this production process, a large amount of flue gases be can produce, powdered carbon dirt, glance coal, tar, SO comprised
2, fluoro-gas etc., these materials are contaminated environment not only, and to human, the vegeto-animal healthy harm greatly that produces, particularly contain in the glance coal 3, the 4-BaP has carcinogenesis, and is therefore very necessary to the purification treatment of flue gas.
Carbon resistance rod mainly contains three process procedures in process of production and produces nuisance and pollutant, is respectively raw material calcination process, living electrode production and electrode baking process.The flue gas that produces in the raw material calcination process is subjected to the influence of raw material, SO
2The content height, the gas temperature height usually more than 800 ℃, also has powdered carbon dirt simultaneously.Flue gas medium pitch cigarette, powdered carbon dirt and the tar content of giving birth to the electrode production generation are higher, and flue-gas temperature is low, generally is no more than 60 ℃.The flue gas that produces in the electrode baking process contains a large amount of glance coals, powdered carbon dirt and fluoro-gas, and SO
2Gas.
All there is deficiency in processing method to flue gas at present.At first, the flue gas of raw material calcination process generation does not take corresponding measure to be handled.Secondly, give birth to the flue gas that produces in the electrode production and generally adopt absorption method to handle, final tail gas of discharging still contains part powdered carbon dirt and glance coal, and the absorption method complex process, cost height, the difficult treatment of adsorbent.The baking flue gas processing method also has wet scrubbing, static method of trapping and simple burning method except absorption method (comprising powdered carbon absorption method, alumina adsorption method), absorption method used herein faces complex process equally, cost height, the problem of sorbent treatment difficulty; Static method of trapping cleaning difficulty, there is the danger of explosive combustion in equipment; Wet-treating is difficult to handle to the secondary pollution of water, and these methods all can not be simultaneously effective various compositions in the smoke treatment, the most important thing is all can not handle the carcinogenic substance 3 in the glance coal, the 4-BaP; And simple burning method need consume a large amount of fuel, and the technology cost is very high.And existing the whole bag of tricks is only handled separately at a certain process procedure, lacks effectively to take all factors into consideration, and can not realize the comprehensive utilization of combustible to flue gas.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at above-mentioned prior art, particularly carcinogenic substance 3 of nuisance in a kind of thoroughly smoke treatment and pollutant is provided, the 4-BaP, and can make full use of energy, technological process is simple, easy to operate, the flue gas cleaning treatment method in the low carbon product production process of processing cost.
The objective of the invention is to be achieved through the following technical solutions.
Flue gas cleaning treatment method in a kind of carbon product production process, it is characterized in that its processing procedure is directly to send into the calcining furnace high-temperature calcination with giving birth to after the flue gas that produces in the electrode production is handled through the insulation of gathering dust, high-temperature gas after the calcining mixes with the cryogenic gas of roaster discharging, by self enough calorific value or by combustion adjuvant mixed burning at high temperature, burn the high-temperature gas of back discharging and directly send into boiler as thermal source, the gas of discharging from boiler at last turns back to living electrode production again with the part Purge gas after handling through the desulfurization defluorinate, to dust and flue gas pipeline heating and the insulation in sending into the process of calcining furnace that this process produces, residue Purge gas high altitude discharge.
Flue gas processing method in a kind of carbon product production process of the present invention is characterized in that its processing procedure comprises:
(1) will give birth to carbonaceous dust and the bitumen flue gas that produces in the electrode production, after collecting with gas skirt, on its conveyance conduit, the hot gas heating of usefulness boiler emission and insulation are at 120～180 ℃;
(2) with the dust and flue gas that contains carbonaceous dust and glance coal that produces in the green anode production process, directly send into calcining furnace, under 1000～1350 ℃ high temperature, burn as the part air distribution;
(3) high-temperature flue gas of discharging from calcining furnace mixes afterwards with low-temperature flue gas that roaster is discharged that temperature remains in 500～800 ℃ of scopes, utilize glance coal, carbonaceous particle and other combustibles in the flue gas to carry out from thermal incineration, insufficient if burn can corresponding additional combustion adjuvant, combustion adjuvant comprises natural gas, coal gas, coal dust, heavy oil etc.;
(4) burning the hot-gas temperature that discharges the back is 600-850 ℃, sends into waste heat boiler as hot blast, reclaims its waste heat;
(5) flue gas of waste heat boiler discharge after desulfurization defluorinate processing, extracts and wherein partly turns back to living electrode production, and dust and flue gas pipeline in sending into the process of calcining furnace that this process produced is heated and insulation, and residual gas is through the chimney high altitude discharge.
Method of the present invention is the nuisance in the smoke treatment and pollutant carcinogenic substance 3 particularly thoroughly, the 4-BaP, and take all factors into consideration the actual production conditions of each workshop section and the heat of the flue gas that discharges, and make full use of these energy to reach the purpose that recycles, technological process simultaneously is simple, easy to operate, processing cost is low.The flue gas that this method is not only applicable in the used for aluminium electrolysis carbon resistance rod production process is handled, and handles too being suitable for for the flue gas in other similar carbon product production processes.
Description of drawings
Fig. 1 is the process chart of the inventive method.
The specific embodiment
Flue gas processing method in a kind of carbon product production process of the present invention, its processing procedure comprises:
1, will give birth to carbonaceous dust and the bitumen flue gas that produces in electrode (or the green anode etc.) production process, after collecting with gas skirt, on its conveyance conduit, with the hot gas heating of boiler emission also insulation at 120～180 ℃;
2, with the dust and flue gas that contains carbonaceous dust and glance coal that produces in green anode (or negative electrode, other electrode products) production process, directly send into calcining furnace, under 1000～1350 ℃ high temperature, burn as the part air distribution;
3, the high-temperature flue gas of discharging from calcining furnace mixes afterwards with low-temperature flue gas that roaster is discharged that temperature remains in 500～800 ℃ of scopes, utilize glance coal, carbonaceous particle and other combustibles in the flue gas to carry out from thermal incineration, insufficient if burn can corresponding additional combustion adjuvant, combustion adjuvant comprises natural gas, coal gas, coal dust, heavy oil etc.;
4, burning the hot-gas temperature that discharges the back is 600-850 ℃, sends into waste heat boiler as hot blast, reclaims its waste heat;
5, the waste heat boiler flue gas of discharging after handling through the desulfurization defluorinate, extracts wherein part and returns with to giving birth to electrode production, and to dust and flue gas pipeline heating and insulation in sending into the process of calcining furnace that this process produced, residual gas is through the chimney high altitude discharge.
Embodiment 1
At the anode production factory and office of 100kt/ annual production reason flue gas, concrete grammar is as follows: at first with the flue gas that produces in the green anode production process with 24000Nm
3The flow of/h enters calcining furnace, and the hot gas heating of usefulness boiler emission and insulation are at 120 ℃ in transmission course, and flue gas and the air of sending into calcining furnace burn under 1350 ℃ high temperature, and 1000 ℃ of high-temperature gases of discharging from calcining furnace then are with 75000Nm
3The flow of discharging in the flow of/h and the roaster is 100000Nm
3155 ℃ of low-temperature flue gas of/h mix, mixed flue-gas temperature is 500 ℃, and under this temperature, continue to burn by the combustion adjuvant coal dust, burn 600 ℃ of high-temperature gases of back discharging and send into waste heat boiler as thermal source, the high-temperature gas passes desulfurization defluorinate of discharging from waste heat boiler is handled the rear section and is turned back to the green anode production process, the dust and flue gas that is used for this process is produced is being sent into the process pipe insulation of calcining furnace, last residual gas is through the chimney high altitude discharge, and discharging flue gas medium pitch cigarette content is less than 12.0mg/Nm
3, BaP content is less than 0.10mg/m
3, be lower than discharging standards.
Embodiment 2
At the anode production factory and office of 60kt/ annual production reason flue gas, concrete grammar is as follows: at first with the flue gas that produces in the green anode production process with 14000Nm
3The flow of/h enters calcining furnace, and the hot gas heating of usefulness boiler emission and insulation are at 150 ℃ in transmission course, and flue gas and the air of sending into calcining furnace burn under 1050 ℃ high temperature, and 850 ℃ of high-temperature gases of discharging from calcining furnace then are with 46000Nm
3The flow of discharging in the flow of/h and the roaster is 50000Nm
3150 ℃ of low-temperature flue gas of/h mix, mixed flue-gas temperature is 530 ℃, and under this temperature, continue to burn by combustion adjuvant heavy oil, burn 660 ℃ of high-temperature gases of back discharging and send into waste heat boiler as thermal source, the high-temperature gas passes desulfurization defluorinate of discharging from waste heat boiler is handled the rear section and is turned back to the green anode production process, the dust and flue gas that is used for this process is produced is being sent into the heating of process pipeline and the insulation of calcining furnace, last residual gas is through the chimney high altitude discharge, and discharging flue gas medium pitch cigarette content is less than 10.0mg/Nm
3, BaP content is less than 0.10mg/m
3, be lower than discharging standards.
Embodiment 3
At the anode production factory and office of 25kt/ annual production reason flue gas, concrete grammar is as follows: at first with the flue gas that produces in the green anode production process with 6000Nm
3The flow of/h enters calcining furnace, and the hot gas heating of usefulness boiler emission and insulation are at 160 ℃ in transmission course, and flue gas and the air of sending into calcining furnace burn under 1000 ℃ high temperature, and 800 ℃ of high-temperature gases of discharging from calcining furnace then are with 18000Nm
3The flow of discharging in the flow of/h and the roaster is 19000Nm
3155 ℃ of low-temperature flue gas of/h mix, mixed flue-gas temperature is 650 ℃, under this temperature, pass through from thermal incineration, burn 720 ℃ of high-temperature gases of back discharging and send into waste heat boiler as thermal source, the high-temperature gas passes desulfurization defluorinate of discharging from waste heat boiler is handled the rear section and is turned back to the green anode production process, the dust and flue gas that is used for this process is produced is being sent into the heating of process pipeline and the insulation of calcining furnace, last residual gas is through the chimney high altitude discharge, and discharging flue gas medium pitch cigarette content is less than 7.5mg/Nm
3, BaP content is less than 0.08mg/m
3, be lower than discharging standards.
Embodiment 4
In the graphite electrode factory smoke treatment of 10kt/ annual production, concrete grammar is as follows: at first will give birth to the flue gas that produces in the electrode production with 2400Nm
3The flow of/h enters calcining furnace, and the hot gas heating of usefulness boiler emission and insulation are at 180 ℃ in transmission course, and flue gas and the air of sending into calcining furnace burn under 1200 ℃ high temperature, and 900 ℃ of high-temperature gases of discharging from calcining furnace then are with 8000Nm
3The flow of discharging in the flow of/h and the roaster is 7000Nm
3150 ℃ of low-temperature flue gas of/h mix, mixed flue-gas temperature is 800 ℃, and under this temperature, pass through from thermal incineration, burn 850 ℃ of high-temperature gases of back discharging and send into waste heat boiler as thermal source, the high-temperature gas passes desulfurization defluorinate of discharging from waste heat boiler is handled the rear section and is turned back to living electrode production, the dust and flue gas that is used for this process is produced is being sent into the heating of process pipeline and the insulation of calcining furnace, last residual gas is through the chimney high altitude discharge, and discharging flue gas medium pitch cigarette content is less than 5.0mg/Nm
3, BaP content is less than 0.05mg/m
3, be lower than discharging standards.
Embodiment 5
In the charcoal negative electrode factory smoke treatment of 10kt/ annual production, concrete grammar is as follows: at first will give birth to the flue gas that produces in the negative electrode production process with 2400Nm
3The flow of/h enters calcining furnace, and the hot gas heating of usefulness boiler emission and insulation are at 140 ℃ in transmission course, and flue gas and the air of sending into calcining furnace burn under 1150 ℃ high temperature, and 950 ℃ of high-temperature gases of discharging from calcining furnace then are with 7500Nm
3The flow of discharging in the flow of/h and the roaster is 8500Nm
3155 ℃ of low-temperature flue gas of/h mix, mixed flue-gas temperature is 600 ℃, and under this temperature, burn by combustion adjuvant coal gas, burn 700 ℃ of high-temperature gases of back discharging and send into waste heat boiler as thermal source, the high-temperature gas passes desulfurization defluorinate of discharging from waste heat boiler is handled the rear section and is turned back to living negative electrode production process, the dust and flue gas that is used for this process is produced is being sent into the heating of process pipeline and the insulation of calcining furnace, last residual gas is through the chimney high altitude discharge, and discharging flue gas medium pitch cigarette content is less than 8.0mg/Nm
3, BaP content is less than 0.08mg/m
3, be lower than discharging standards.
Claims (2)
1. the flue gas cleaning treatment method in the carbon product production process, it is characterized in that its processing procedure is directly to send into the calcining furnace high-temperature calcination with giving birth to after the flue gas that produces in the electrode production is handled through the insulation of gathering dust, high-temperature gas after the calcining mixes with the cryogenic gas of roaster discharging, by self enough calorific value or by combustion adjuvant mixed burning at high temperature, burn the high-temperature gas of back discharging and directly send into boiler as thermal source, the gas of discharging from boiler at last turns back to living electrode production again with the part Purge gas after handling through the desulfurization defluorinate, to dust and flue gas pipeline heating and the insulation in sending into the process of calcining furnace that this process produces, residue Purge gas high altitude discharge.
2. the flue gas processing method in a kind of carbon product production process according to claim 1 is characterized in that its processing procedure comprises:
(1) will give birth to carbonaceous dust and the bitumen flue gas that produces in the electrode production, after collecting with gas skirt, on its conveyance conduit, the hot gas heating of usefulness boiler emission and insulation are at 120～180 ℃;
(2) with the dust and flue gas that contains carbonaceous dust and glance coal that produces in the green anode production process, directly send into calcining furnace, under 1000～1350 ℃ high temperature, burn as the part air distribution;
(3) high-temperature flue gas of discharging from calcining furnace mixes afterwards with low-temperature flue gas that roaster is discharged that temperature remains in 500～800 ℃ of scopes, utilize glance coal, carbonaceous particle and other combustibles in the flue gas to carry out from thermal incineration, insufficient if burn can corresponding additional combustion adjuvant, combustion adjuvant comprises natural gas, coal gas, coal dust, heavy oil etc.;
(4) burning the hot-gas temperature that discharges the back is 600-850 ℃, sends into waste heat boiler as hot blast, reclaims its waste heat;
(5) flue gas of waste heat boiler discharge after desulfurization defluorinate processing, extracts and wherein partly turns back to living electrode production, and dust and flue gas pipeline in sending into the process of calcining furnace that this process produced is heated and insulation, and residual gas is through the chimney high altitude discharge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101154410A CN101306312B (en) | 2008-06-24 | 2008-06-24 | Flue gas cleaning treatment method during producing carbon product |
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|---|---|---|---|
| CN2008101154410A CN101306312B (en) | 2008-06-24 | 2008-06-24 | Flue gas cleaning treatment method during producing carbon product |
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| Publication Number | Publication Date |
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| CN101306312A true CN101306312A (en) | 2008-11-19 |
| CN101306312B CN101306312B (en) | 2010-09-29 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104147893A (en) * | 2014-08-22 | 2014-11-19 | 北京城市排水集团有限责任公司 | Municipal wastewater treatment plant volatile organic compound gas purification system and purification method thereof |
| CN106545870A (en) * | 2016-09-30 | 2017-03-29 | 中国环境科学研究院 | Electrolytic aluminum smoke amount and pollutant become Zero discharging system |
| CN108955278A (en) * | 2018-05-14 | 2018-12-07 | 中国铝业股份有限公司 | A kind of Purification Processes for Charcoal Anode of Al Reduction Cell processing method |
| CN112833677A (en) * | 2020-12-27 | 2021-05-25 | 上海交通大学 | Carbon anode roasting pre-purification process based on flue gas circulation |
| CN113267049A (en) * | 2021-06-02 | 2021-08-17 | 济宁碳素集团有限公司 | Flue gas treatment method and device |
| CN116576683A (en) * | 2023-05-15 | 2023-08-11 | 广东维正环保机电工程有限公司 | Environment-friendly energy-saving system for graphite production |
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| CN2711548Y (en) * | 2004-06-04 | 2005-07-20 | 徐向成 | Self-preheating bitumen smoke incineration treating device |
| CN1755310A (en) * | 2004-10-01 | 2006-04-05 | 张元程 | Apparatus for collecting, educing and treating asphalt fume in carbon baking furnace |
| KR100634173B1 (en) * | 2006-06-23 | 2006-10-16 | 주식회사 이즈컨텍 | waste gas purification apparatus |
| CN1935397A (en) * | 2006-09-26 | 2007-03-28 | 沈阳铝镁设计研究院 | Green anode, green cathode, green electrode asphalt smoke purifying system and its purifying process |
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| CN104147893A (en) * | 2014-08-22 | 2014-11-19 | 北京城市排水集团有限责任公司 | Municipal wastewater treatment plant volatile organic compound gas purification system and purification method thereof |
| CN106545870A (en) * | 2016-09-30 | 2017-03-29 | 中国环境科学研究院 | Electrolytic aluminum smoke amount and pollutant become Zero discharging system |
| CN106545870B (en) * | 2016-09-30 | 2019-03-19 | 中国环境科学研究院 | Electrolytic aluminum smoke amount and pollutant become Zero discharging system |
| CN108955278A (en) * | 2018-05-14 | 2018-12-07 | 中国铝业股份有限公司 | A kind of Purification Processes for Charcoal Anode of Al Reduction Cell processing method |
| CN112833677A (en) * | 2020-12-27 | 2021-05-25 | 上海交通大学 | Carbon anode roasting pre-purification process based on flue gas circulation |
| CN113267049A (en) * | 2021-06-02 | 2021-08-17 | 济宁碳素集团有限公司 | Flue gas treatment method and device |
| CN116576683A (en) * | 2023-05-15 | 2023-08-11 | 广东维正环保机电工程有限公司 | Environment-friendly energy-saving system for graphite production |
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| Publication number | Publication date |
|---|---|
| CN101306312B (en) | 2010-09-29 |
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Effective date of registration: 20180528 Address after: 450041 No. 82, Jiyuan Road, Zhengzhou District, Henan Co-patentee after: Aluminum Corporation of China Limited Patentee after: Henan Hua Hui Nonferrous Engineering Design Co., Ltd. Address before: 100082 Xizhimen North Street, Haidian District, Haidian District, Beijing Patentee before: Aluminum Corporation of China Limited |