CN103007683A - System and method for purifying flue gas in cathode electrode roasting kiln and recycling and reusing solid waste - Google Patents
System and method for purifying flue gas in cathode electrode roasting kiln and recycling and reusing solid waste Download PDFInfo
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- CN103007683A CN103007683A CN2012105694931A CN201210569493A CN103007683A CN 103007683 A CN103007683 A CN 103007683A CN 2012105694931 A CN2012105694931 A CN 2012105694931A CN 201210569493 A CN201210569493 A CN 201210569493A CN 103007683 A CN103007683 A CN 103007683A
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Abstract
The invention relates to a system and a method for purifying flue gas in a cathode electrode roasting kiln and recycling and reusing solid waste. The technical solution adopted by the invention is as follows: the outlet of the cathode electrode roasting kiln is connected with an atomized cooling absorption tower; the outlet of the atomized cooling absorption tower is connected with an electric-bag composite dust collector; the outlet of the electric-bag composite dust-collector is connected with an induced draft fan; the induced draft fan is connected with the inlet of desulfurization tower; the outlet of desulfurization tower is connected with a chimney; a graphite and carbon powder mixing bin is connected with the atomized cooling absorption tower; the lower end of the atomized cooling absorption tower is connected with an electrode proportioning bin through a conveying device I; and the electric-bag composite dust-collector is connected with the electrode proportioning bin through a conveying device II. The solid waste purified and filtered by the system can be reused, without secondary transformation of pollution sources. The system has low investment, easy operation and low failure rate, and the processed flue gas emission can meet national standards.
Description
Technical field
The invention relates to system and the technique that the flue gas that contains pitch that produces in the production of target electrode baking kiln purified and purified the solid waste recycling of getting off.
Background technology
Steel-smelting electric furnace, iron-smelting furnace, ore-smelting electric furnace, electrolytic aluminium etc. all use heavy in section graphite electrode.This graphite electrode all must through negative electrode or anode-baking furnace roasting, produce a large amount of pernicious gas and dust and understand, especially a large amount of glance coal compositions in roasting process.Most domestic cathode electrode roasting flue gas clarification system adopts electrical tar precipitator, also there is few part aluminium manufacturer to adopt sack cleaner, when using sack cleaner, at the deduster front end spray column is set, in tower, spray alumina powder, utilize alumina adsorption pitch, purify by sack cleaner, purify the aluminium oxide that contains pitch and send into secondary utilization in the electrolytic cell.Also contain pitch in the flue gas that produces in the electrolysis, thereby caused the transfer of pollution sources, do not reach thorough radical cure.Utilize electrical tar precipitator, the problem that exists is: the flue gas after the processing often causes the pole plate in the electric cleaner sticking dead by pitch, and resistance increases, attached energy-absorbing power descends, and concentration of emission exceeds standard, the pitch that captures is bonded at the electrical tar precipitator inwall, and the equipment ash discharge of causing is not smooth.Therefore, how to process this flue gas is one of difficult problem of capturing both at home and abroad always.
Summary of the invention
The purpose of the invention provides and a kind ofly can purify cathode electrode calcining kiln flue gas, and with the device of solid waste recycling.
Another purpose of the invention provides a kind of purification cathode electrode calcining kiln flue gas, and with the method for solid waste recycling.
The technical scheme that the invention is adopted is: the gas cleaning of cathode electrode calcining kiln and solid waste recycling system, comprise the cathode electrode calcining kiln, the outlet of cathode electrode calcining kiln connects atomizing cooling adsorption tower, the outlet of atomizing cooling adsorption tower is connected with electric bag compound type dust remover, the electric bag compound type dust remover outlet is connected with air-introduced machine, air-introduced machine is connected with the desulfurizing tower import, and the desulfurizing tower outlet is connected with chimney; Graphite carbon dust mixed powder storehouse is connected with atomizing cooling adsorption tower, and atomizing cooling adsorption tower lower end is connected with the electrode batch bin through the conveying device I; Electric bag compound type dust remover is connected with the electrode batch bin through the conveying device II.
Above-mentioned cathode electrode calcining kiln gas cleaning and solid waste recycling system, described electric bag compound type dust remover is made of electric cleaner and some sack cleaners.
The gas cleaning of a kind of cathode electrode calcining kiln and solid waste recycling method adopt above-mentioned system, and step is as follows:
1) entered in the atomizing cooling adsorption tower by cathode electrode calcining kiln flue gas out, be controlled at about 100 ~ 120 ℃ through flue-gas temperature after lower floor's spraying cooling, flue gas rises and enters adsorption layer, spray the graphite that stores in the graphite carbon dust mixed powder storehouse and toner mixture in the adsorption layer (in the graphite carbon dust mixed powder storehouse, graphite and carbon dust mix by weight 1:2-5), pitch in the flue gas is mixed with the graphite that sprays and carbon dust in adsorption tower, form graphite, the mixture of carbon dust and pitch, a part directly falls in the atomizing cooling adsorption tower bottom ash bucket, short grained dust rises with flue gas and enters electric bag compound type dust remover, flue gas after electric bag compound type dust remover purifies is delivered to desulfurizing tower by air-introduced machine, discharges by chimney;
2) material that falls in the atomizing cooling adsorption tower bottom ash bucket is sent into the electrode batch bin through the conveying device I, and the dust that is filtered down by electric-bag complex dust collector falls in the dust collector ash hopper, sends into the electrode batch bin through the conveying device II.
The beneficial effect of the invention is: 1. adopt atomizing cooling adsorption tower, flue-gas temperature is down to below 120 ℃, carbon dust and graphite are sprayed in graphite carbon dust mixed powder storehouse in tower, pitch prill contained in the flue gas and graphite and carbon dust are adsorbed fully, asphalt surface forms grey film, is not bonded at the equipment inner surface.The service life of 2. adopting electric bag compound type dust remover can improve filter bag, utilize electric cleaner to filter out big dust particle, the granule dust enters sack cleaner by electric cleaner and carries out essence filtration, dust contained flue gas concentration≤300mg/Nm after filtering
33. delivered in the electrode batch bin by conveying device by the dust of atomize cooling adsorption tower and electric bag compound type dust remover collected carbonaceous powder, graphite and pitch etc., recycling after mixing by proportioning.
Description of drawings
Fig. 1 is the structural representation of the invention.
The specific embodiment
Embodiment 1 cathode electrode calcining kiln gas cleaning and solid waste recycling system
As shown in Figure 1, the gas cleaning of cathode electrode calcining kiln and solid waste recycling system are made of cathode electrode calcining kiln (1), atomizing cooling adsorption tower (2), electric bag compound type dust remover (3), air-introduced machine (4), desulfurizing tower (5), chimney (6), graphite carbon dust mixed powder storehouse (7), conveying device I (8), conveying device II (9) and electrode batch bin (10).
Cathode electrode calcining kiln (1) outlet connects atomizing cooling adsorption tower (2), atomizing cooling adsorption tower (2) outlet is connected with electric bag compound type dust remover (3), electric bag compound type dust remover (3) outlet is connected with air-introduced machine (4), air-introduced machine (4) is connected with desulfurizing tower (5) import, and desulfurizing tower (5) outlet is connected with chimney (6); Graphite carbon dust mixed powder storehouse (7) is connected with atomizing cooling adsorption tower (2), and atomizing cooling adsorption tower (2) lower end is connected with electrode batch bin (10) through conveying device I (8); Electric bag compound type dust remover (3) is connected with electrode batch bin (10) through conveying device II (9).
Above-mentioned electric bag compound type dust remover (3) is made of electric cleaner (3-1) and some sack cleaners (3-2).
Embodiment 2 one kinds of cathode electrode calcining kilns gas cleaning and solid waste recycling method
Adopt the system of embodiment 1, step is as follows:
1) entered in the atomizing cooling adsorption tower by cathode electrode calcining kiln flue gas out, be controlled at about 100 ~ 120 ℃ through flue-gas temperature after lower floor's spraying cooling, flue gas rises and enters adsorption layer, in adsorption layer, spray graphite and the toner mixture (graphite and carbon dust mix by weight 1:3) that stores in the graphite carbon dust mixed powder storehouse, pitch in the flue gas is mixed with the graphite that sprays and carbon dust in adsorption tower, form graphite, the mixture of carbon dust and pitch, a part directly falls in the atomizing cooling adsorption tower bottom ash bucket, short grained dust rises with flue gas and enters electric bag compound type dust remover, through electric bag compound type dust remover, the dust contained flue gas concentration≤30mg/Nm after purify this moment
3, the flue gas after the purification is delivered to desulfurizing tower by air-introduced machine, SO in the desulfurizing tower flue gas after desulfurization
2Concentration≤100mg/Nm
3, then discharge by chimney;
2) material that falls in the atomizing cooling adsorption tower bottom ash bucket is sent into the electrode batch bin through the conveying device I, and the dust that is filtered down by electric-bag complex dust collector falls in the dust collector ash hopper, sends into the electrode batch bin through the conveying device II.Then deliver to the utilization of preparing burden of electrode batch plant, thereby reach the utilization of refuse.
Claims (4)
1. the gas cleaning of cathode electrode calcining kiln and solid waste recycling system, comprise cathode electrode calcining kiln (1), it is characterized in that: cathode electrode calcining kiln (1) outlet connects atomizing cooling adsorption tower (2), atomizing cooling adsorption tower (2) outlet is connected with electric bag compound type dust remover (3), electric bag compound type dust remover (3) outlet is connected with air-introduced machine (4), air-introduced machine (4) is connected with desulfurizing tower (5) import, and desulfurizing tower (5) outlet is connected with chimney (6); Graphite carbon dust mixed powder storehouse (7) is connected with atomizing cooling adsorption tower (2), and atomizing cooling adsorption tower (2) lower end is connected with electrode batch bin (10) through conveying device I (8); Electric bag compound type dust remover (3) is connected with electrode batch bin (10) through conveying device II (9).
2. according to cathode electrode calcining kiln claimed in claim 1 gas cleaning and solid waste recycling system, it is characterized in that: described electric bag compound type dust remover (3) is made of electric cleaner (3-1) and some sack cleaners (3-2).
3. cathode electrode calcining kiln gas cleaning and solid waste recycling method is characterized in that adopting claim 1 or 2 described systems, and step is as follows:
1) entered in the atomizing cooling adsorption tower by cathode electrode calcining kiln flue gas out, be controlled at about 100 ~ 120 ℃ through flue-gas temperature after lower floor's spraying cooling, flue gas rises and enters adsorption layer, in adsorption layer, spray graphite and the toner mixture that stores in the graphite carbon dust mixed powder storehouse, pitch in the flue gas is mixed with the graphite that sprays and carbon dust in adsorption tower, form graphite, the mixture of carbon dust and pitch, a part directly falls in the atomizing cooling adsorption tower bottom ash bucket, short grained dust rises with flue gas and enters electric bag compound type dust remover, flue gas after electric bag compound type dust remover purifies is delivered to desulfurizing tower by air-introduced machine, discharges by chimney;
2) material that falls in the atomizing cooling adsorption tower bottom ash bucket is sent into the electrode batch bin through the conveying device I, and the dust that is filtered down by electric-bag complex dust collector falls in the dust collector ash hopper, sends into the electrode batch bin through the conveying device II.
4. according to a kind of cathode electrode calcining kiln claimed in claim 3 gas cleaning and solid waste recycling method, it is characterized in that: in the graphite carbon dust mixed powder storehouse, graphite and carbon dust mix by weight 1:2-5.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691247B (en) * | 2014-01-03 | 2015-07-29 | 沈阳博达机械有限公司 | A kind of purifying and dedusting device for bitumen flue gas |
| CN106731451A (en) * | 2016-12-07 | 2017-05-31 | 江西南方环保机械制造总公司 | Cremation Machine flue gas dioxin purifies adsorption system |
| CN107551753A (en) * | 2017-10-09 | 2018-01-09 | 铜陵安东铸钢有限责任公司 | A kind of collection tapping equipment of casting dust in large-scale steel-casting production process |
| CN108301286A (en) * | 2018-04-04 | 2018-07-20 | 四川建筑职业技术学院 | A kind of microwave prepares the method and its equipment of bituminous concrete |
| CN108543386A (en) * | 2018-06-26 | 2018-09-18 | 贵阳铝镁设计研究院有限公司 | A method of for purifying baking carbon product flue gas |
| CN108744935A (en) * | 2018-07-02 | 2018-11-06 | 内蒙古深工环境治理技术有限公司 | A kind of asphalt smoke purifying system and purification method |
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| 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 |
| CN101062458A (en) * | 2006-04-29 | 2007-10-31 | 东北大学设计研究院（有限公司） | Asphalt smoke gas purifying technique |
| CN203030151U (en) * | 2012-12-25 | 2013-07-03 | 辽宁环宇环保技术有限公司 | Flue gas purification and solid waste recycling system for cathode electrode roasting kiln |
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2012
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| CN101062458A (en) * | 2006-04-29 | 2007-10-31 | 东北大学设计研究院（有限公司） | Asphalt smoke gas purifying technique |
| 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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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691247B (en) * | 2014-01-03 | 2015-07-29 | 沈阳博达机械有限公司 | A kind of purifying and dedusting device for bitumen flue gas |
| CN106731451A (en) * | 2016-12-07 | 2017-05-31 | 江西南方环保机械制造总公司 | Cremation Machine flue gas dioxin purifies adsorption system |
| CN107551753A (en) * | 2017-10-09 | 2018-01-09 | 铜陵安东铸钢有限责任公司 | A kind of collection tapping equipment of casting dust in large-scale steel-casting production process |
| CN108301286A (en) * | 2018-04-04 | 2018-07-20 | 四川建筑职业技术学院 | A kind of microwave prepares the method and its equipment of bituminous concrete |
| CN108301286B (en) * | 2018-04-04 | 2023-11-14 | 四川建筑职业技术学院 | Method and equipment for preparing asphalt concrete by microwaves |
| CN108543386A (en) * | 2018-06-26 | 2018-09-18 | 贵阳铝镁设计研究院有限公司 | A method of for purifying baking carbon product flue gas |
| CN108744935A (en) * | 2018-07-02 | 2018-11-06 | 内蒙古深工环境治理技术有限公司 | A kind of asphalt smoke purifying system and purification method |
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Address after: 115100 South Outer Ring Development Zone, Yingkou, Liaoning, Dashiqiao Patentee after: Liaoning Huanyu Environmental Protection Technology Co.,Ltd. Address before: 115100 Dashiqiao Yingkou Liaoning City Development Zone Patentee before: Liaoning Huanyu Environmental Protection Technique Co., Ltd. |