CN102000483A - Method for treating asphalt gas efficiently and harmlessly - Google Patents

Method for treating asphalt gas efficiently and harmlessly Download PDF

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Publication number
CN102000483A
CN102000483A CN 201010295746 CN201010295746A CN102000483A CN 102000483 A CN102000483 A CN 102000483A CN 201010295746 CN201010295746 CN 201010295746 CN 201010295746 A CN201010295746 A CN 201010295746A CN 102000483 A CN102000483 A CN 102000483A
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CN
China
Prior art keywords
flue gas
gas
benzanthracene
carbazole
polycyclic aromatic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 201010295746
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Chinese (zh)
Inventor
杨实
宁德元
刘仕宏
李再芳
郭峻
曹显平
陈石平
赵永林
马华远
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YUNNAN YUANXIN CARBON CO Ltd
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YUNNAN YUANXIN CARBON CO Ltd
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Application filed by YUNNAN YUANXIN CARBON CO Ltd filed Critical YUNNAN YUANXIN CARBON CO Ltd
Priority to CN 201010295746 priority Critical patent/CN102000483A/en
Publication of CN102000483A publication Critical patent/CN102000483A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method for treating asphalt gas efficiently and harmlessly. The method comprises the following steps of: performing reaction adsorption on the asphalt gas and calcined petroleum coke powder in a Venturi reactor; collecting dust and coke tar from the gas in a bag-type duster remover for recycle; after removing the coke tar and dust-containing steam in the asphalt gas, performing burning treatment by using a regenerative combustion furnace, wherein the burning temperature is higher than 800 DEG C and the burning time is 1 to 2 seconds; and decomposing polycyclic aromatic hydrocarbons such as benzopyrene, benzanthracene and carbazole in the gas after the burning treatment for effectively removing harmful substances of the polycyclic aromatic hydrocarbons such as the benzopyrene, the benzanthracene and the carbazole, wherein the harmful substance content of the treated gas is below 5 mg/m<3>. By using the method, the harmful substances of the polycyclic aromatic hydrocarbons such as the benzopyrene, the benzanthracene, the carbazole and the like are removed effectively; and the harmful substance content of the gas after the treatment is below 5 mg/m<3> which is far below a national secondary emission standard.

Description

A kind of method of efficient, harmless treatment bitumen flue gas
Technical field
The present invention relates to used for aluminium electrolysis prebaked anode production technical field, particularly a kind of method of efficient in used for aluminium electrolysis prebaked anode preparation process, harmless treatment bitumen flue gas.
Background technology
Prebaked anode be with after-smithing petroleum coke, pitch coke, anode scrap (roasting is broken), to give birth to broken be aggregate, coal tar pitch forms for the bonding agent manufacturing, wherein is furnished with the coal tar pitch of 14%-17% in the green anode prescription.Its green anode manufacturing process as shown in Figure 1.
When green anode is made except that producing a large amount of dust, also in batching, mix and pinch and operation such as vibration moulding produces a large amount of bitumen flue gas.Contain the tarvia volatile matter in the bitumen flue gas, its main component has more than 80 kind of polycyclic aromatic hydrocarbon hydrocarbons such as benzo [a] pyrene, benzanthracene, carbazole, is carcinogenic and strong carcinogen mostly, and particle diameter is many at 0.1~1.0 , minimum only 0.01 , maximum 10.0 that are about.
The bitumen flue gas composition is extremely complicated, wherein maximum to human body and surrounding environment harm, what the treatment process requirement was the highest is multiple polycyclic aromatic hydrocarbon hydrocarbons such as BaP, benzanthracene, carbazole, also is plain enterprise of present metallurgical charcoal and government agencies at all levels emphasis and the difficult point industry to prevention and control of air pollution.General small-sized charcoal ink factory production technology is simple, and waste of raw materials is serious, and Fuel Consumption is big, the discharging that exceeds standard of pollution-free facility for prevention and control, pollutant.
Summary of the invention
The method that the purpose of this invention is to provide the bitumen flue gas in a kind of complete, effective, harmless treatment used for aluminium electrolysis prebaked anode preparation process, effectively remove multiple polycyclic aromatic hydrocarbon hydrocarbon harmful substances such as tarvia, stupid and pyrene, benzanthracene, carbazole, harmful substance contents is lower than 5mg/m in the flue gas after it is handled 3,, well below discharging standards.
The present invention is according to the production reality of charcoal ink factory's (product is the charcoal piece), by improve batching, mix pinch, that the gas skirt of thickener cooling, formed product is collected flue gas is more complete, effective.The bitumen flue gas of collecting is carried out step-by-step processing according to its characteristics.To tarvia in the bitumen flue gas and dust-containing water steam, recycle after employing after-smithing petroleum coke powder (black method) adsorption treatment; To multiple polycyclic aromatic hydrocarbon hydrocarbons such as BaP, benzanthracene, carbazoles, then adopt thermal accumulating incinerator carry out high temperature effectively, innoxious process for treating, regulation effect is splendid.The concentration of emission of nuisance is reduced greatly, be much better than current national two class environmental emission standards, have obvious social and high industry promotional value.
Not high for this concentration, dust-laden, the moisture heavier and pitch smog that very disperses, adopt conventional can't be such as electrical tar precipitator or single processing method with its thorough improvement.Must adopt the treatment technology of substep, combination it could be carried out complete, effective, innoxious decomposition.
Technical scheme of the present invention is: adopt after-smithing petroleum coke powder (black method) absorption+thermal accumulating incinerator incineration treatment method, promptly allow bitumen flue gas and after-smithing petroleum coke powder react absorption earlier at the venturi reactor, flue gas enters sack cleaner again dust and tar is collected utilization again, after removing the tar and dust-containing water steam in the bitumen flue gas, use the thermal accumulating incinerator burning disposal again, incineration temperature>800 ℃, burned 1~2 second, after the burning disposal to the BaP in the flue gas, benzanthracene, polycyclic aromatic hydrocarbons such as carbazole decompose, effectively remove BaP, benzanthracene, polycyclic aromatic hydrocarbon harmful substances such as carbazole, harmful substance contents is lower than 5mg/m in the flue gas after the processing 3,, well below national secondary discharge standard.
The present invention compared with prior art has following good effect:
1, the present invention has not only realized environmental requirement, and has removed harmful substance-BaP fully.
2, according to the bitumen flue gas component, step-by-step processing bitumen flue gas targetedly.
3, operating cost is low, only needs to add small amount of fuel and gets final product high temperature, effective, harmless treatment bitumen flue gas.
4, waste heat is fully utilized, and the thermal accumulating incinerator efficiency of utilization is more than 95%.
5, treatment temperature makes it obtain complete, effective, harmless treatment.
6, processes complete, effective, efficient is up to more than 99%.
Description of drawings
Fig. 1 is the green anode manufacturing flow chart.
Fig. 2 is the flow chart of processing bitumen flue gas of the present invention.
The specific embodiment
Earlier with pitch head tank and asphalt quality flowmeter, mix and pinch, the thickener cooling, the bitumen flue gas that vibration moulding produces collects, smoke induced draught fan is introduced the venturi reactor with bitumen flue gas, and react absorption at the venturi reactor with the after-smithing petroleum coke powder, flue gas enters sack cleaner again dust and tar is collected utilization again, after removing the tar and dust-containing water steam in the bitumen flue gas, use the thermal accumulating incinerator burning disposal again, incineration temperature>800 ℃, burned 1~2 second, after the burning disposal to the BaP in the flue gas, benzanthracene, polycyclic aromatic hydrocarbons such as carbazole decompose, effectively remove harmful substances such as stupid and pyrene, harmful substance contents is lower than 5mg/m in the flue gas after it is handled 3,, well below national secondary discharge standard.In processing procedure, the soft pitch flue gas is fed the fresh hot blast of high temperature and heat, and equipment that bitumen flue gas passed through and pipeline are heated and be incubated.

Claims (2)

  1. One kind efficient, the method of harmless treatment bitumen flue gas, it is characterized in that bitumen flue gas and after-smithing petroleum coke powder are reacted absorption at the venturi reactor, flue gas enters sack cleaner again dust and tar is collected utilization again, after removing the tar and dust-containing water steam in the bitumen flue gas, use the thermal accumulating incinerator burning disposal again, incineration temperature>800 ℃, burned 1~2 second, after the burning disposal to the BaP in the flue gas, benzanthracene, the carbazole polycyclic aromatic hydrocarbon decomposes, effectively remove BaP, benzanthracene, carbazole polycyclic aromatic hydrocarbon harmful substance, harmful substance contents is lower than 5mg/m in the flue gas after the processing 3,
  2. 2. the method for efficient, harmless treatment bitumen flue gas according to claim 1, its feature is that at first the soft pitch flue gas is fed the fresh hot blast of high temperature to be heated, and equipment that bitumen flue gas passed through and pipeline are heated and be incubated.
CN 201010295746 2010-09-29 2010-09-29 Method for treating asphalt gas efficiently and harmlessly Pending CN102000483A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010295746 CN102000483A (en) 2010-09-29 2010-09-29 Method for treating asphalt gas efficiently and harmlessly

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Application Number Priority Date Filing Date Title
CN 201010295746 CN102000483A (en) 2010-09-29 2010-09-29 Method for treating asphalt gas efficiently and harmlessly

Publications (1)

Publication Number Publication Date
CN102000483A true CN102000483A (en) 2011-04-06

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103127809A (en) * 2011-11-25 2013-06-05 辽宁北环净化技术有限公司 Dry type dust removing method for asphalt flue gas
CN105126515A (en) * 2015-08-17 2015-12-09 上海台安建材科技有限公司 Asphalt smoke comprehensive environmental protection treatment system and applications thereof
CN106012763A (en) * 2016-07-04 2016-10-12 杭州全合科技有限公司 Asphalt waste material heating and regenerating equipment and processing method thereof
CN106940019A (en) * 2017-04-17 2017-07-11 东北师范大学 Polycyclic aromatic hydrocarbon emission reduction device based on negative feedback control
CN107376625A (en) * 2017-08-10 2017-11-24 中国铝业股份有限公司 A kind of processing method of calcining carbon flue gas
CN108744930A (en) * 2018-06-13 2018-11-06 哈尔滨工程大学 A kind of system of the high efficiente callback gas fired-boiler fume afterheat based on injector
CN109764344A (en) * 2019-01-17 2019-05-17 沈阳铝镁设计研究院有限公司 A kind of bitumen flue gas comprehensive treatment system
CN110893311A (en) * 2018-09-13 2020-03-20 沈阳铝镁设计研究院有限公司 Asphalt smoke treatment method
CN111545003A (en) * 2020-05-20 2020-08-18 山东大学 Method for purifying tar in carbon electrode roasting furnace flue gas
CN111793504A (en) * 2020-06-08 2020-10-20 新兴铸管股份有限公司 Dust-containing gas discharge device of dry quenching coke powder bin
CN113149665A (en) * 2021-04-08 2021-07-23 北京联合荣大工程材料股份有限公司 Environment-friendly bonding agent and stemming for blast furnace

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2035212A1 (en) * 1990-01-30 1991-07-31 Klaus Jungk Process and apparatus for removing pitch- or tar-containing pollutants present in exhaust gases
CN1418720A (en) * 2002-12-12 2003-05-21 中国铝业股份有限公司 Method and equipment for filtering smoke of asphalt
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2035212A1 (en) * 1990-01-30 1991-07-31 Klaus Jungk Process and apparatus for removing pitch- or tar-containing pollutants present in exhaust gases
CN1418720A (en) * 2002-12-12 2003-05-21 中国铝业股份有限公司 Method and equipment for filtering smoke of asphalt
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《南京工业大学学报》 20030531 张宇峰等 挥发性有机化合物的污染控制技术 第89页第2列第3段 1-2 第25卷, 第3期 *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103127809A (en) * 2011-11-25 2013-06-05 辽宁北环净化技术有限公司 Dry type dust removing method for asphalt flue gas
CN103127809B (en) * 2011-11-25 2015-06-10 辽宁北环净化技术有限公司 Dry type dust removing method for asphalt flue gas
CN105126515A (en) * 2015-08-17 2015-12-09 上海台安建材科技有限公司 Asphalt smoke comprehensive environmental protection treatment system and applications thereof
CN106012763B (en) * 2016-07-04 2018-10-30 杭州全合科技有限公司 A kind of heating of pitch waste material and generating apparatus and its processing method again
CN106012763A (en) * 2016-07-04 2016-10-12 杭州全合科技有限公司 Asphalt waste material heating and regenerating equipment and processing method thereof
CN106940019A (en) * 2017-04-17 2017-07-11 东北师范大学 Polycyclic aromatic hydrocarbon emission reduction device based on negative feedback control
CN107376625A (en) * 2017-08-10 2017-11-24 中国铝业股份有限公司 A kind of processing method of calcining carbon flue gas
CN107376625B (en) * 2017-08-10 2020-05-15 中国铝业股份有限公司 Method for treating carbon roasting flue gas
CN108744930A (en) * 2018-06-13 2018-11-06 哈尔滨工程大学 A kind of system of the high efficiente callback gas fired-boiler fume afterheat based on injector
CN110893311A (en) * 2018-09-13 2020-03-20 沈阳铝镁设计研究院有限公司 Asphalt smoke treatment method
CN109764344A (en) * 2019-01-17 2019-05-17 沈阳铝镁设计研究院有限公司 A kind of bitumen flue gas comprehensive treatment system
CN109764344B (en) * 2019-01-17 2019-12-13 沈阳铝镁设计研究院有限公司 Comprehensive treatment system for asphalt smoke
CN111545003A (en) * 2020-05-20 2020-08-18 山东大学 Method for purifying tar in carbon electrode roasting furnace flue gas
CN111793504A (en) * 2020-06-08 2020-10-20 新兴铸管股份有限公司 Dust-containing gas discharge device of dry quenching coke powder bin
CN113149665A (en) * 2021-04-08 2021-07-23 北京联合荣大工程材料股份有限公司 Environment-friendly bonding agent and stemming for blast furnace

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Application publication date: 20110406