CN101829494A - Dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method - Google Patents
Dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method Download PDFInfo
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- CN101829494A CN101829494A CN200910047362A CN200910047362A CN101829494A CN 101829494 A CN101829494 A CN 101829494A CN 200910047362 A CN200910047362 A CN 200910047362A CN 200910047362 A CN200910047362 A CN 200910047362A CN 101829494 A CN101829494 A CN 101829494A
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- dry ash
- flue gas
- fume
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- desulfurization
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses dry ash wetting and recycling technology for desulfurizing sintered fume by a rotary spraying and drying method, which relates to the desulfurization technology for the sintered fume and is suitable for treating the sintered (pelletized) fume generated in a steel production process. In the process of the invention, wetted dry ash is directly added into the sintered fume for auxiliary cooling and adsorption for the fume, so the area occupied by technical equipment and construction cost are reduced; the effect is good; and desulfurization efficiency of the sintered fume is improved. The process of the invention is simple and convenient in operation and at least one fourth lower than the present desulfurization process in investment and construction cost and operating cost, and creates good economic benefit and environmental benefit.
Description
Technical field
Dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method relates to the desulfurization treatment technology to sinter fume, is applicable to the purified treatment of sintering (pelletizing) flue gas that steel manufacture process produces.
Background technology
Iron and steel enterprise has a large amount of sinter fume dischargings in process of production, and the major pollutants in the sinter fume are particle, SO
2, NO
XHe bioxin.At present to the control of the particle of sinter fume with handle unquestionablely, that at present main is the NO that further improves in sintering flue gas desulfurization effect and control and the smoke treatment
XHe bioxin.
Because the generation of sinter fume and himself, the desulfurization of sinter fume handled directly to quote the sulfur removal technology and the equipment of thermal power plant.Existing sintering flue gas desulfurization technology mainly adopts wet type limestone-based process and lime rotating spraying semidry method.The technological process of wet type limestone-based process is long, system complex, and investment is big, and occupation of land is many, the operating cost height, the half dry type rotary spraying technique has many improvement than wet type limestone-based process, has become one of operation technique of sintering flue gas desulfurization.
Summary of the invention
The present invention seeks to existing technology is further simplified and optimized, minimizing equipment and floor space, provide a kind of technological process short, easy to operate, production cost is low, by the direct circulating and recovering of moistening desulfurization dry ash, reach the dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method of good flue gas desulfurization effect.
Technology of the present invention is by electric cleaner, main shaft blower fan, and flue gas pipeline absorbs overhead drum, rotary atomization device, sack cleaner, lime slurry preparation facilities, the wet water throwing device, dry ash pipeline and dry ash storehouse constitute, and the purpose of moistening flue gas is to improve reactivity and desulfuration efficiency.In order further to improve the degree of purification of flue gas, also can set up the active carbon device on the flue gas pipeline before sack cleaner, to remove harmful substances such as flue gas Zhong bioxin and mercury.
Dry ash is the byproduct that produces in the sintering flue gas desulfurization processing procedure, cooled off fully after entering the dry ash storehouse, owing to also contain lime in the dry ash, and therefore, can be directly the material of dry ash as flue gas cool-down and desulfurization.
Technology of the present invention is taken out dry ash and is directly joined the sinter fume after suitably adding the water damping from the dry ash storehouse, also enter the absorption tower with the flue gas mixing, the lime slurry that is sprayed into by rotary atomization device in the absorption tower mixes with flue gas again, because flue gas and lime slurry have sufficient incorporation time, acidic materials in the flue gas are contacted fully with lime slurry and with lime generation neutralization reaction, the accessory substance dry ash of sweetening process and the lime-ash that drops into the bottom on absorption tower, be recycled to the dry ash storehouse by recovery system, the flue gas of handling through desulfurization filters after smoke stack emission by cloth bag place dirt device.Perhaps, can also carry out the processing that removes of bioxin and mercury, filter the back discharging by sack cleaner then the flue gas of handling through desulfurization according to the gas cleaning requirement.
The invention has the advantages that: adopt moistening dry ash directly to join in the flue gas, saved the dry ash pulping process, equipment and floor space thereof and construction cost have been reduced, and cooling and assimilation effect are good, the utilization rate and the desulfuration efficiency of desulfurizing agent have been improved effectively, recycling of dry ash can be saved the use amount of lime and reduced production cost.Technological operation of the present invention is easy, and the expense of investment construction is lower at least by 1/4 than existing sulfur removal technology, and good economic benefit is arranged, and is beneficial to iron and steel enterprise and applies.
Description of drawings
The specific embodiment
According to above-mentioned accompanying drawing technology of the present invention is further described.
Lime is pumped to absorption overhead drum 4 behind lime slurry preparation facilities 8 preparation pulpings standby.Wet water throwing device 10 is communicated with dry ash pipeline 9, and dry ash pipeline 9 is communicated with dry ash storehouse 11 with flue gas pipeline 3, and dry ash enters the absorption tower through entering flue gas pipeline 3 behind the wet water throwing device 10 suitable humidifications after flue gas mixes.
Sinter fume after dividing processing, the clean flue gas that the flue gas of its low-sulfur system is handled back and absorption tower discharge through electric cleaner 1 converges by smoke stack emission.The flue gas of high-sulfur system then is sent to the absorption tower by main shaft blower fan 2 by flue gas pipeline 3, dry ash takes out from dry ash storehouse 11 behind suitable humidification to enter flue gas pipeline 3 in to mix with flue gas by dry ash pipeline 9 before flue gas is sent into the absorption tower directly lowers the temperature to flue gas and once absorption, enters the absorption tower then together; Lime slurry in absorbing overhead drum 4 sprays in the absorption tower through rotary atomization device 5, and the lime slurry of this moment is vaporific and mixes with flue gas, and the acidic materials in the flue gas are contacted fully with lime and react at this with lime.The flue gas of handling through desulfurization filters after smoke stack emission by sack cleaner 7.Dry ash that produces at flue gas desulfurization course and the lime-ash that drops into the bottom, absorption tower are collected into dry ash storehouse 10 by recovery system, and a part of dry ash is in addition recycling, and a part is then transported outward pending.According to the gas cleaning requirement, can also remove bioxin and mercury with active carbon injection device 6 injection active carbons, discharging after sack cleaner 7 filters then through the flue gas that desulfurization is handled.
Claims (2)
1. dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method, by electric cleaner (1), main shaft blower fan (2), flue gas pipeline (3) absorbs overhead drum (4), rotary atomization device (5), active carbon injection device (6), sack cleaner (7), lime slurry preparation facilities (8), dry ash pipeline (9), wet water throwing device (10), dry ash storehouse (11) constitute, and it is characterized in that: lime is pumped to absorption overhead drum (4) behind lime slurry preparation facilities (8) preparation pulping standby; Sinter fume is sent to the absorption tower by main shaft blower fan (2) by flue gas pipeline (3), dry ash takes out from dry ash storehouse (11) before sinter fume is sent into the absorption tower, behind wet water throwing device (10) humidification, enter in the flue gas pipeline (3) and mix with flue gas by dry ash pipeline (9), directly flue gas is lowered the temperature and once absorption, enter the absorption tower then together; Lime slurry in absorbing overhead drum (4) is sprayed in the absorption tower by rotary atomization device (5) and mixes with flue gas, acidic materials in the flue gas fully contact with lime slurry and secondary response again, flue gas after desulfurization is handled, after sack cleaner (7) filters by smoke stack emission; Flue gas device after perhaps desulfurization being handled injects active carbon with active carbon injection device (6) and removes bioxin and mercury, filters after smoke stack emission through sack cleaner (7) then; Dry ash that produces at flue gas desulfurization course and the lime-ash that drops into the bottom, absorption tower are collected into dry ash storehouse (11) by recovery system, and the part dry ash is in addition recycling, and the part dry ash is then transported outward pending.
2. sintering flue gas desulfurization technology according to claim 1 is characterized in that: dry ash pipeline (9) is communicated with dry ash storehouse (11) with flue gas pipeline (3), and wet water throwing device (10) is communicated with dry ash pipeline (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100473625A CN101829494B (en) | 2009-03-11 | 2009-03-11 | Dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100473625A CN101829494B (en) | 2009-03-11 | 2009-03-11 | Dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101829494A true CN101829494A (en) | 2010-09-15 |
| CN101829494B CN101829494B (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100473625A Expired - Fee Related CN101829494B (en) | 2009-03-11 | 2009-03-11 | Dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251325A (en) * | 2014-07-16 | 2016-01-20 | 鞍钢股份有限公司 | Sintering flue gas circulating fluidized bed desulphurization and denitrification system and method thereof |
| CN105268292A (en) * | 2014-07-16 | 2016-01-27 | 鞍钢股份有限公司 | Sintering flue gas rotary spray desulphurization and denitrification system and method |
| CN105275514A (en) * | 2015-11-23 | 2016-01-27 | 厦门东方富源环保科技有限公司 | Waste gas dedusting and waste heat low-temperature exhaust heat organic Rankine cycle power generation system |
| CN107789973A (en) * | 2017-04-24 | 2018-03-13 | 永清环保股份有限公司 | A kind of flue gas of sintering machine dust collecting process and device |
| CN107837681A (en) * | 2017-11-24 | 2018-03-27 | 北京万信同和能源科技有限公司 | After catalytic cracked regenerated exhuast gas desulfurization in gas desulfurizing agent recovery system and method |
| CN109316934A (en) * | 2018-10-29 | 2019-02-12 | 安徽欣创节能环保科技股份有限公司 | A kind of flue gas desulphurization system for cancelling bypass |
| CN112044345A (en) * | 2020-09-22 | 2020-12-08 | 马鞍山奥柯环保科技发展有限公司 | Novel SDA desulfurizing tower bed charge cyclic utilization system |
| CN113019092A (en) * | 2021-02-06 | 2021-06-25 | 唐山钢铁集团有限责任公司 | Flue gas desulfurization and denitrification method and system based on dense-phase semi-dry method |
Family Cites Families (6)
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| CN101024143A (en) * | 2007-01-12 | 2007-08-29 | 中冶长天国际工程有限责任公司 | Sinter-smoke circulation collected desulfurizing method and apparatus |
| CN100490946C (en) * | 2007-02-13 | 2009-05-27 | 武汉都市环保工程技术股份有限公司 | Sintering flue gas ammonia method desulfurizing system |
| CN100490948C (en) * | 2007-03-07 | 2009-05-27 | 沙晓农 | Twin tower circulating fluidized bed fume desulfurizing method and device |
| CN101306311B (en) * | 2008-01-22 | 2012-07-25 | 福建龙净脱硫脱硝工程有限公司 | Sintered flue gas dry-method removal method and device |
| CN101288825B (en) * | 2008-06-16 | 2012-02-22 | 万若（北京）环境工程技术有限公司 | Semi-dry type fume cleaning method and device |
| CN101376921A (en) * | 2008-10-10 | 2009-03-04 | 中南大学 | Sintering gas flue gas sulfuric dioxide decrement discharge technology |
-
2009
- 2009-03-11 CN CN2009100473625A patent/CN101829494B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251325A (en) * | 2014-07-16 | 2016-01-20 | 鞍钢股份有限公司 | Sintering flue gas circulating fluidized bed desulphurization and denitrification system and method thereof |
| CN105268292A (en) * | 2014-07-16 | 2016-01-27 | 鞍钢股份有限公司 | Sintering flue gas rotary spray desulphurization and denitrification system and method |
| CN105275514A (en) * | 2015-11-23 | 2016-01-27 | 厦门东方富源环保科技有限公司 | Waste gas dedusting and waste heat low-temperature exhaust heat organic Rankine cycle power generation system |
| CN107789973A (en) * | 2017-04-24 | 2018-03-13 | 永清环保股份有限公司 | A kind of flue gas of sintering machine dust collecting process and device |
| CN107837681A (en) * | 2017-11-24 | 2018-03-27 | 北京万信同和能源科技有限公司 | After catalytic cracked regenerated exhuast gas desulfurization in gas desulfurizing agent recovery system and method |
| CN109316934A (en) * | 2018-10-29 | 2019-02-12 | 安徽欣创节能环保科技股份有限公司 | A kind of flue gas desulphurization system for cancelling bypass |
| CN112044345A (en) * | 2020-09-22 | 2020-12-08 | 马鞍山奥柯环保科技发展有限公司 | Novel SDA desulfurizing tower bed charge cyclic utilization system |
| CN113019092A (en) * | 2021-02-06 | 2021-06-25 | 唐山钢铁集团有限责任公司 | Flue gas desulfurization and denitrification method and system based on dense-phase semi-dry method |
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| Publication number | Publication date |
|---|---|
| CN101829494B (en) | 2012-10-31 |
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Granted publication date: 20121031 Termination date: 20140311 |