CN1864809A - A method for purifying flue gas by use of powdered activated coke - Google Patents
A method for purifying flue gas by use of powdered activated coke Download PDFInfo
- Publication number
- CN1864809A CN1864809A CN 200610078125 CN200610078125A CN1864809A CN 1864809 A CN1864809 A CN 1864809A CN 200610078125 CN200610078125 CN 200610078125 CN 200610078125 A CN200610078125 A CN 200610078125A CN 1864809 A CN1864809 A CN 1864809A
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- China
- Prior art keywords
- activated coke
- flue gas
- powdered activated
- pollutant
- gas
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Links
- 239000000571 coke Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000003546 flue gas Substances 0.000 title claims description 43
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 39
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 14
- 231100000719 pollutant Toxicity 0.000 claims abstract description 14
- 230000008929 regeneration Effects 0.000 claims description 9
- 238000011069 regeneration method Methods 0.000 claims description 9
- 239000008246 gaseous mixture Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 5
- 229910052740 iodine Inorganic materials 0.000 claims description 5
- 239000011630 iodine Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 10
- 238000006477 desulfuration reaction Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract 4
- 239000000779 smoke Substances 0.000 abstract 4
- 239000007789 gas Substances 0.000 description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 230000023556 desulfurization Effects 0.000 description 8
- 229910052753 mercury Inorganic materials 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 6
- 239000003245 coal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052956 cinnabar Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention discloses a method for cleaning amoke gas by using powder active coke. The smoke gas containing pollutant passes through gas passage injected with powder active coke for pollutant removal, the powder active coke adsorbed with pollutant is collected by dust cleaner, and the smoke gas is cleaned. The injecting amount of active coke is 50-20000 mg for every m3 smoke gas. The invention is characterized by small device, simple construction, and low investment, desulfuration rate of 50-99%, denitration rate of 20-80% and demercuration rate of larger than 50-95%. The production cost of powder active coke is low, and there is no mechanical consumption in process of removing pollutant, which greatly reduces cost for smoke gas cleaning.
Description
Technical field
The present invention relates to flue gas purifying method, particularly relate to the method that a kind of application powdered activated coke or active carbon (hereinafter to be referred as powdered activated coke) purify flue gas.
Background technology
Developing clean coal technology is one of strategy of sustainable development.China's atmosphere pollution is mainly caused by fire coal, the NO that is produced
xWith SO
2Can cause acid rain harm; And the environmental pollution that heavy metals such as mercury, lead, chromium may cause after burning in the coal has got more and more people's extensive concerning, and is example with mercury, and mercury common form with cinnabar and free mercury in coal exists, and evaporate in the flue gas harmful to people and animals during its burning more.
At present, external gas cleaning is most of adopts Wet technique, but the wet type flue gas desulphurization technology at home some areas power plant apply and be restricted.The activated coke flue gases purification is a kind of advanced person's a dry method flue gases purification, developmental research methods such as activated coke fixed bed, moving bed.The inventor has applied for that on June 25th, 2004 name is called the patent of invention of " a kind of flue gas desulfurization, method of denitration ", and application number is 200410038037.X.This flue gas desulfurization, method of denitration carry out in the desulfurization and denitrification reaction device that is made of two sections moving-burden bed reactors, and flow process comprises: second section reactor from the activated coke of first section reactor is housed, the SO in the adsorbing and removing flue gas bottom flue gas is introduced into
2, then with NH
3Or H
2After the mixing of CO mist, enter the first section reactor that is added with activated coke in top, react the nitrogen oxide that removes wherein with the activated coke in the first section reactor in top, generate gas and enter atmosphere.This method is at NH
3Or H
2Under the effect of CO mixing reducing agent, have higher denitration performance, solved problems such as existing reaction speed is slow in flue gas desulfurization, the denitration, denitration efficiency is low, be mainly used in flue gas desulfurization and denitration; But the used moving bed device of this technology is general huger, equipment investment height, activated coke mechanical loss height in the pollutant removing process, desulphurization cost height.
Summary of the invention
The objective of the invention is a kind of powdered activated coke high-efficiency and continuous, flue gas purifying method with low cost used.
Method provided by the present invention is the flue gas that will contain pollutant has the flue of powdered activated coke by injection, removes pollutant wherein, and the powdered activated coke of absorption pollutant is collected with deduster, is purified flue gas; Wherein, the emitted dose of described powdered activated coke is 50-20000mg activated coke/m
3Flue gas.
Wherein, the particle diameter of powdered activated coke is 0.1-2000 μ m, iodine number 150-1300mg/g, water content 1%-60%.In order to guarantee the pollutant combined removal effect of desulphurization denitration and heavy metal, the temperature of described flue gas is 60-180 ℃; In order further to improve NO
XRemoval efficiency, when spraying into powdered activated coke in the flue gas, also feeding has NH
3Or NH
3With CO gaseous mixture, NH
3Or NH
3The concentration of the gaseous mixture of/CO in flue gas is 50-3000mg/m
3NH
3In the gaseous mixture of/CO, General N H
3With the ratio of CO be 0.1-1.0.
The activated coke that deduster is collected can be heated to 200-800 ℃ and regenerate.Regeneration is carried out in hot rotary furnace or the tubular reactor outside closed, adopts the indirect mode.The rotary furnace diameter is 0.5-3m, and long is 5-40m.
The preferred request for utilization of activated coke of the present invention number is 02146004.3, the activated coke of denomination of invention for preparing in the patent application of " a kind of preparation process of active carbon ".Used deduster can be selected all kinds deduster commonly used for use, as cyclone dust collectors, sack cleaner or electric cleaner etc.
Flue gas purifying method of the present invention has characteristics such as little, the simple in structure and construction investment of device is low, compare with traditional activated coke moving bed process for purifying, the activated coke granularity that is used for flue gas purifying technique significantly reduces, be reduced to 0.1-2000 μ m by 5-15mm, reduced diffusional resistance, increased the contact area of flue gas and activated coke, therefore the gas cleaning reaction speed has been significantly improved, the reactor air speed significantly improves, and reduces activated coke gas cleaning construction investment significantly.The inventive method desulfuration efficiency 50-99%, denitration efficiency 20-80%, demercuration efficient is greater than 50-95%.Purify with the activated coke moving bed in addition and compare, used powdered activated coke production cost is low, and does not have mechanical loss in the pollutant removing process, and activated coke gas cleaning cost is reduced significantly.The method of purifying flue gas by application of active coke of the present invention can remove SO simultaneously
2, NO
XWith heavy metal contaminants such as mercury, have that gas cleaning efficient height, construction investment are low, a purification process advantage such as consume water not, have popularizing application prospect widely.
Description of drawings
Fig. 1 removes SO for adopting the duct injection activated coke
2, NO
XWith pollutant process schematic representations such as mercury.
The specific embodiment
Flue sprays the process for purifying flow chart as shown in Figure 1, powdered activated coke is ejected into by injector 12 and purifies in the pipeline 11, flue gas enters in the pipeline purifying pipeline 11 imports, separates with the saturated powdered activated coke of absorption in deduster 13, is purified flue gas; Thermal regeneration in the hot outside rotary furnace 14 of activated coke that reclaims can the repetitive cycling utilization, the high concentration SO that discharges
2Gas can be used as the raw material of chemical products such as producing sulfuric acid and elemental sulfur.
Embodiment 1, gas cleaning desulfurization, denitration, demercuration
Utilize flue shown in Figure 1 to spray process for purifying, SO in the flue gas
2Concentration is 1000mg/m
3, NO
XConcentration is 500mg/m
3, Hg content is 20 μ g/m
3, temperature is 120 ℃, spraying activated coke concentration is 1000mg/m
3, powdered activated coke particle 500-600 μ m, iodine number 400mg/g, water content 6%.Whole process SO
2Removal efficiency is 90%, NO
XRemoval efficiency is 30%, and Hg removal efficiency 95% recycles the high concentration SO that the regeneration back obtains after the active coke powder regeneration
2Gas is used to produce sulfuric acid.If when spraying into powdered activated coke in the flue gas, spray into 100-500mg/m
3NH
3Or CO, then NO
XRemoval efficiency is 40%.
Embodiment 2, gas cleaning desulfurization, denitration, demercuration
Flue gas SO
2Content is 3000mg/m
3, NO
XConcentration is 300mg/m
3, Hg content is 10 μ g/m
3, flue-gas temperature is 120 ℃, this flue gas is passed in the flue, with 3800mg activated coke powder/m
3The emitted dose of flue gas is sprayed activated coke in pipeline, powdered activated coke particle 200-400 μ m, iodine number 600mg/g, water content 8%, the NH of adding
3With the concentration of CO mixing reducing agent be 600mg/m
3(NH
3/ CO is 1), whole process flue gas Hg removal efficiency is 93%, SO
2Removal efficiency is 92%, NO
XRemoval efficiency is 49%.Recycle the high concentration SO that the regeneration back obtains after the active coke powder regeneration
2Gas is used to produce sulfuric acid.
Embodiment 3, gas cleaning desulfurization, denitration, demercuration
Flue gas SO
2Content is 7500mg/m
3, NO
XConcentration is 600mg/m
3, Hg content is 25 μ g/m
3, flue-gas temperature is 180 ℃, the NH of adding
3With the concentration of CO mixing reducing agent be 600mg/m
3(NH
3/ CO is 0.5), activated coke duct injection amount is 5000mg/m
3, powdered activated coke particle 10-80 μ m, iodine number 800mg/g, water content 15%.Whole process SO
2Removal efficiency is 90%, NO
XRemoval efficiency is 45%, and the Hg removal efficiency is 95%.Recycle the high concentration SO that the regeneration back obtains after the active coke powder regeneration
2Gas is used to produce sulfuric acid.
Claims (8)
1, a kind of method of purifying flue gas by use of powdered activated coke is the flue gas that will contain pollutant has the flue of powdered activated coke by injection, removes pollutant wherein, and the powdered activated coke of absorption pollutant is collected with deduster, is purified flue gas; Wherein, the emitted dose of described powdered activated coke is 50-20000mg activated coke/m
3Flue gas.
2, method according to claim 1 is characterized in that: the particle diameter of powdered activated coke is 0.1-2000 μ m, iodine number 150-1300mg/g, water content 1%-60%.
3, method according to claim 1 is characterized in that: the temperature of described flue gas is 60-180 ℃.
4, method according to claim 1 is characterized in that: when spraying into powdered activated coke in the flue gas, also feeding has NH
3Or NH
3With CO gaseous mixture, NH
3Or NH
3The concentration of the gaseous mixture of/CO in flue gas is 50-3000mg/m
3
5, method according to claim 4 is characterized in that: described NH
3With NH in the CO gaseous mixture
3With the ratio of CO be 0.1-1.0.
6, according to the arbitrary described method of claim 1-5, it is characterized in that: the activated coke that deduster is collected is heated to 200-800 ℃ and regenerates.
7, method according to claim 6 is characterized in that: regeneration is carried out in hot rotary furnace or the tubular reactor closed outside, employing indirect mode.
8, method according to claim 7 is characterized in that: the rotary furnace diameter is 0.5-3m, and long is 5-40m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100781251A CN100411709C (en) | 2006-04-26 | 2006-04-26 | A method for purifying flue gas by use of powdered activated coke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100781251A CN100411709C (en) | 2006-04-26 | 2006-04-26 | A method for purifying flue gas by use of powdered activated coke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1864809A true CN1864809A (en) | 2006-11-22 |
| CN100411709C CN100411709C (en) | 2008-08-20 |
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ID=37424046
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100781251A Active CN100411709C (en) | 2006-04-26 | 2006-04-26 | A method for purifying flue gas by use of powdered activated coke |
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| Country | Link |
|---|---|
| CN (1) | CN100411709C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101480554B (en) * | 2008-12-31 | 2011-07-27 | 武汉科技大学 | Method for removing mercury from flue gas using sulphur-applying active carbon |
| CN102527177A (en) * | 2011-12-23 | 2012-07-04 | 厦门龙净环保技术有限公司 | Dust collection and mercury removal integrated electric-bag composite dust collector |
| CN101559318B (en) * | 2009-05-25 | 2013-10-30 | 天津城市建设学院 | Thermal carbon composite denitration method for coal-fired boiler |
| CN106621701A (en) * | 2016-12-20 | 2017-05-10 | 神华集团有限责任公司 | Flue gas desulfurization system |
| CN108982280A (en) * | 2018-07-26 | 2018-12-11 | 山东大学 | A kind of coke breeze demercuration method of evaluating performance and system based on air flow bed |
| CN108982281A (en) * | 2018-07-26 | 2018-12-11 | 山东大学 | A kind of coke breeze absorption VOCs method of evaluating performance and system based on air flow bed |
| CN108982279A (en) * | 2018-07-26 | 2018-12-11 | 山东大学 | A kind of coke breeze trace organic substance absorption property evaluation method and system based on air flow bed |
| CN109925879A (en) * | 2019-04-24 | 2019-06-25 | 东北大学 | A kind of sinter-smoke circulation collected device with the denitration of APS coordinated desulfurization |
| CN109999574A (en) * | 2019-02-21 | 2019-07-12 | 沈阳东大山汇环境科技有限公司 | A kind of thermopnore activated carbon adsorption method of denitration of low-sulfur flue gas |
| CN110755999A (en) * | 2019-11-05 | 2020-02-07 | 山东大学 | Full-flow fluidized active coke demercuration recovery process and system |
| CN110862848A (en) * | 2019-12-27 | 2020-03-06 | 山东钢铁集团日照有限公司 | Method for removing sulfide in blast furnace gas |
| CN111804567A (en) * | 2020-06-08 | 2020-10-23 | 新兴铸管股份有限公司 | Process for filtering superfine active coke powder |
| CN113318705A (en) * | 2021-07-13 | 2021-08-31 | 榆林学院 | Active coke loaded zero-valent iron nano composite material and preparation method and application thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999051337A1 (en) * | 1998-04-07 | 1999-10-14 | Chiyoda Corporation | Desulfurization of exhaust gases using activated carbon catalyst |
| CN1204955C (en) * | 2002-01-29 | 2005-06-08 | 国家电站燃烧工程技术研究中心 | Cyclic fluidized bed active coke desulfurating and sulfur reutilization method |
-
2006
- 2006-04-26 CN CNB2006100781251A patent/CN100411709C/en active Active
Cited By (18)
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| CN101480554B (en) * | 2008-12-31 | 2011-07-27 | 武汉科技大学 | Method for removing mercury from flue gas using sulphur-applying active carbon |
| CN101559318B (en) * | 2009-05-25 | 2013-10-30 | 天津城市建设学院 | Thermal carbon composite denitration method for coal-fired boiler |
| CN102527177A (en) * | 2011-12-23 | 2012-07-04 | 厦门龙净环保技术有限公司 | Dust collection and mercury removal integrated electric-bag composite dust collector |
| CN106621701A (en) * | 2016-12-20 | 2017-05-10 | 神华集团有限责任公司 | Flue gas desulfurization system |
| CN106621701B (en) * | 2016-12-20 | 2020-09-11 | 神华集团有限责任公司 | Flue gas desulfurization system |
| CN108982279B (en) * | 2018-07-26 | 2020-06-19 | 山东大学 | Method and system for evaluating adsorption performance of coke breeze trace organic matters based on entrained flow bed |
| CN108982279A (en) * | 2018-07-26 | 2018-12-11 | 山东大学 | A kind of coke breeze trace organic substance absorption property evaluation method and system based on air flow bed |
| CN108982280B (en) * | 2018-07-26 | 2020-06-19 | 山东大学 | Pulverized coke demercuration performance evaluation method and system based on entrained flow bed |
| CN108982281A (en) * | 2018-07-26 | 2018-12-11 | 山东大学 | A kind of coke breeze absorption VOCs method of evaluating performance and system based on air flow bed |
| CN108982281B (en) * | 2018-07-26 | 2020-06-19 | 山东大学 | Method and system for evaluating performance of adsorbing VOCs (volatile organic compounds) by using coke breeze based on entrained flow |
| CN108982280A (en) * | 2018-07-26 | 2018-12-11 | 山东大学 | A kind of coke breeze demercuration method of evaluating performance and system based on air flow bed |
| CN109999574A (en) * | 2019-02-21 | 2019-07-12 | 沈阳东大山汇环境科技有限公司 | A kind of thermopnore activated carbon adsorption method of denitration of low-sulfur flue gas |
| CN109925879A (en) * | 2019-04-24 | 2019-06-25 | 东北大学 | A kind of sinter-smoke circulation collected device with the denitration of APS coordinated desulfurization |
| CN110755999A (en) * | 2019-11-05 | 2020-02-07 | 山东大学 | Full-flow fluidized active coke demercuration recovery process and system |
| CN110862848A (en) * | 2019-12-27 | 2020-03-06 | 山东钢铁集团日照有限公司 | Method for removing sulfide in blast furnace gas |
| CN111804567A (en) * | 2020-06-08 | 2020-10-23 | 新兴铸管股份有限公司 | Process for filtering superfine active coke powder |
| CN111804567B (en) * | 2020-06-08 | 2022-08-30 | 新兴铸管股份有限公司 | Process for filtering superfine active coke powder |
| CN113318705A (en) * | 2021-07-13 | 2021-08-31 | 榆林学院 | Active coke loaded zero-valent iron nano composite material and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100411709C (en) | 2008-08-20 |
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Free format text: FORMER OWNER: WANG LING LI SHURONG LIU CHUNLAN SUN ZHONGCHAO Owner name: CHINA SHENHUA ENERGY STOCK CO., LTD. Free format text: FORMER OWNER: ZHANG WENHUI Effective date: 20100521 |
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Free format text: CORRECT: ADDRESS; FROM: 100013 COAL-CHEMICAL RESEARCH INSTITUTE, INSTITUTE OF COAL, NO.5, QINGNIANGOUDONG ROAD, HEPINGLI, CHAOYANG DISTRICT, BEIJING CITY TO: 100011 4/F, ZHOUJI BUILDING, NO.16 ANDE ROAD, DONGCHENG DISTRICT, BEIJING |
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Effective date of registration: 20100521 Address after: 100011 Beijing city Dongcheng District No. 16 Andrew intercontinental 4 storey building Patentee after: China Shenhua Energy Co., Ltd. Address before: 100013, Beijing, Hepingli Youth ditch East Road, No. 5 coal branch of the Chaoyang District Institute of coal Co-patentee before: Wang Ling Patentee before: Zhang Wenhui Co-patentee before: Li Shurong Co-patentee before: Liu Chunlan Co-patentee before: Sun Zhongchao |