CN201380039Y - Double-tower flue gas desulphurization device - Google Patents
Double-tower flue gas desulphurization device Download PDFInfo
- Publication number
- CN201380039Y CN201380039Y CN200920038132U CN200920038132U CN201380039Y CN 201380039 Y CN201380039 Y CN 201380039Y CN 200920038132 U CN200920038132 U CN 200920038132U CN 200920038132 U CN200920038132 U CN 200920038132U CN 201380039 Y CN201380039 Y CN 201380039Y
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- Prior art keywords
- tower
- flue gas
- cooling
- double
- filler
- 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.)
- Expired - Lifetime
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000003546 flue gas Substances 0.000 title claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims abstract description 11
- 230000002745 absorbent Effects 0.000 claims abstract description 8
- 239000002250 absorbent Substances 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 28
- 239000007921 spray Substances 0.000 claims description 28
- 230000003647 oxidation Effects 0.000 claims description 26
- HIVLDXAAFGCOFU-UHFFFAOYSA-N ammonium hydrosulfide Chemical compound [NH4+].[SH-] HIVLDXAAFGCOFU-UHFFFAOYSA-N 0.000 claims description 25
- 230000003009 desulfurizing effect Effects 0.000 claims description 20
- 239000000945 filler Substances 0.000 claims description 18
- 238000006477 desulfuration reaction Methods 0.000 claims description 17
- 230000023556 desulfurization Effects 0.000 claims description 17
- 238000005201 scrubbing Methods 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 10
- 239000006096 absorbing agent Substances 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052921 ammonium sulfate Inorganic materials 0.000 abstract description 9
- 235000011130 ammonium sulphate Nutrition 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract 4
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 18
- 238000010521 absorption reaction Methods 0.000 description 11
- 229910021529 ammonia Inorganic materials 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- JJEJDZONIFQNHG-UHFFFAOYSA-N [C+4].N Chemical compound [C+4].N JJEJDZONIFQNHG-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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Abstract
The utility model relates to a double-tower flue gas desulphurization and purification device. The device comprises a desulphurization tower and a cooling and washing tower, which are connected through a flue gas passage; wherein, a raw flue gas inlet and an ammonium sulfate slurry outlet are formed on the cooling and washing tower; a desulphurization absorbent inlet and a purified flue gas outlet are formed on the desulphurization tower provided with a washing and demisting section, an absorbing section and an oxidizing section, and an oxidized air and absorbent inlet is formed on the oxidizing section; the absorbing section is provided with a plurality of spraying layers and is connected with the oxidizing section through a feed liquid circulation pipeline; an upper dilute ammonium sulfate sprayer and a lower concentrated ammonium sulfate sprayer are arranged in the cooling and washing tower, wherein the dilute ammonium sulfate sprayer is connected with a feed liquid output pipeline at the bottom of the oxidizing section of the desulphurization tower, and the concentrated ammonium sulfate sprayer is connected with the bottom of the cooling and washing tower through an out tower circulation pipeline. By adopting the cooling and washing tower, the raw flue gas is pre-washed, cooled, and dedusted; by utilizing heat of the flue gas, ammonium sulfate solution is concentrated and crystallized, so that the energy consumption and the operation resistance of the desulphurization tower are reduced, thereby achieving the characteristics of energy conservation and high performance.
Description
Technical field
The present invention relates to a kind of smoke eliminator, particularly with the double tower type flue gas desulfurization purifier of ammonia (ammoniacal liquor, carbon ammonium, liquefied ammonia) as absorbent.
Background technology
China is energy consumption big country, and the annual energy that is consumed accounts for 8%～9% of world's total amount consumed, and SO
2Total emission volumn but accounts for 15.1% of world's discharge capacity, and other pollutants are as the NO of discharging
xAccount for 10.1%, CO
2Account for 13.5%.The coal burning fume is one of the greatest contamination source of China's atmosphere then, except that containing volume of smoke, also contains SO in the coal-fired flue-gas
2, NO
x, CO
2Etc. harmful components.Therefore, popularize flue gas desulfurization in an all-round way, crucial meaning is arranged for the atmospheric environment of improving China.
At present China's desulfurizer all is introduction of foreign technology and equipment and based on the calcium method basically.The one, because the abundant and low price in the desulfurizing agent lime stone of calcium method source; The 2nd, the calcium law technology is ripe relatively.But calcium method sulfur removal technology shows the easy fouling obstruction of its equipment, the disposal of accessory substance gypsum difficulty, system complex day by day, investment is many, floor space is big, produce problems such as secondary pollution, operating cost height.Come by-product chemical fertilizer ammonium sulfate in the ammonia source widely and the ammonia process of desulfurization can make full use of China, remedy the breach of a large amount of imported sulphur of China, both administered SO
2Pollute, satisfy long-term a large amount of chemical fertilizer demand again, and can produce certain economic benefits.Ammonia process of desulfurization non-secondary pollution is an environmental protection desulfur technology that adapts to national conditions and long term growth.
Integrated for realizing that flue gas desulfurization and sulphur ammonium are produced, domestic many researchs all are conceived to absorb the multipurpose tower of desulfurization and condensing crystallizing.But this will improve the height of tower, and manufacturing cost is higher relatively.The combined column device that patent CN200998639 then provides a kind of condensing crystallizing and oxidation to absorb effectively reduce tower height, but this device exists the easy wall built-up of crystallizing tower slip, the fugacious problem of absorption tower ammonia.
Summary of the invention
The double tower type desulfurizer that the purpose of this invention is to provide a kind of burner gas cleaning, can realize the washing cooling of flue gas and removing of sulfur dioxide by this device, utilize flue gas heat to realize the condensing crystallizing of sulphur ammonium slip simultaneously, and also can effectively eliminate the wall cling phenomenon that dense sulphur ammonium wall conductance causes.
This device is made up of desulfurizing tower and cooling scrubbing tower, links to each other with exhaust gases passes between the two, and the cooling scrubbing tower is provided with former gas approach and sulphur ammonium slip outlet, and desulfurizing tower is provided with desulfurization absorbent inlet and clean exhanst gas outlet; Include washing demist section, absorber portion and oxidation panel in the desulfurizing tower from top to bottom, oxidation panel is provided with oxidation air and absorbent inlet; Absorber portion is provided with a plurality of spraying layers, and links to each other with oxidation panel by the feed liquid circulation line; Cooling scrubbing tower top is provided with the dense sulphur ammonium of upper strata rare sulphur ammonium spray thrower and lower floor spray thrower, and wherein rare sulphur ammonium spray thrower links to each other with desulfurizing tower oxidation panel bottom feed liquid output pipe, and dense sulphur ammonium spray thrower links to each other with the tower external circulation line that draw cooling scrubbing tower bottom.
Exhaust gases passes between cooling scrubbing tower and the desulfurizing tower is provided with demister.
Being provided with percent opening in the said oxidation panel greater than 30% multilayer filler, generally is grid or sieve plate filler.
Said desulfurization absorbent and oxidation air add in the lump from the inlet of oxidation panel bottom.
Said demist section is provided with specific area greater than 300m
2/ m
3Filler, as big voidage ripple packing, silk screen or deflection plate.
This device is provided with double tower, and former flue gas is introduced into the cooling scrubbing tower and contacts with the absorption liquid washing of two-layer spray thrower spray, fully heat exchange, and the cooling dedusting, thus the running resistance in the desulfurizing tower is reduced; On the other hand, establish dense sulphur ammonium spray thrower in the cooling scrubbing tower, in order to spray absorption liquid, can make the flue gas cool-down humidification, the absorption liquid condensing crystallizing is convenient to the further processing of sulphur ammonium slip, has saved energy consumption; Rare sulphur ammonium spray thrower places dense sulphur ammonium spray thrower top, and keeps higher spray coverage rate, can spray absorption liquid and further contact with flue gas, and can effectively eliminate the wall cling phenomenon that dense sulphur ammonium wall conductance causes; Use the multilayer spraying layer in the desulfurizing tower, Flow Field Distribution is reasonable, effectively reduces system's running resistance, so absorber portion can not be provided with filler or the high grid packing of voidage is set, and has simplified the tower inner structure, operates reliable and stable; Absorbent and oxidation air together add the oxidation panel bottom, can effectively reduce the escaping of ammonia.
In sum, this double tower device to former flue gas pre-wash cooling dedusting, effectively reduces the running resistance of desulfurizing tower by the cooling scrubbing tower, utilizes flue gas heat that ammonium sulfate solution is carried out condensing crystallizing, has reduced energy consumption; Can realize the abundant absorption of sulfur dioxide and the abundant oxidation of ammonium sulfurous, have the characteristics of efficient energy-saving.
Description of drawings
Fig. 1 is the structural representation of this double tower type flue gas desulfurization purifier.
Among the figure, 10-desulfurizing tower, 111-smoke inlet, the 12-outlet, 20---demist section, 21-filler, 22-water spray thrower, 23-is washing filler, the import of 24-shower water, the 30-absorber portion, three grades of desulfurization spraying layers of 31-32-secondary desulfurization spraying layer, 33-first grade desulfurizing spraying layer, 40-oxidation panel, 41-multilayer filler, 42-air sparger, 43-oxidation panel bottom inlet, the 50-scrubbing tower of lowering the temperature, the rare sulphur ammonium of 51-spray thrower, the dense sulphur ammonium of 52-spray thrower, 53-agitator, 54-crystallization demister, the 61-circulating pump, the 62-feed pump, 63-crystallization pump, 64-discharging pump.
The specific embodiment
As Fig. 1, former flue gas through dedusting enters cooling scrubbing tower 50 by smoke inlet 111, the high-concentration sulfuric acid ammonium salt solution that ejects with dense sulphur ammonium spray thrower 52 fully contacts, carry out heat exchange, the cigarette temperature drop is to 70-100 ℃, after contacting with rare sulphur ammonium of rare sulphur ammonium spray thrower 51 injections is further again, after crystallization demister 54 is removed the crystalline particle that flue gas carries secretly, enter the middle part of desulfurizing tower 10 absorber portions 30, contact with absorption liquid and to cool to about 50-70 ℃, upwards pass through the first grade desulfurizing spraying layer 33 of absorber portion successively, secondary desulfurization spraying layer 32 and three grades of desulfurization spraying layers 31, the washing demist section 20 that the flue gas after quilt sprays enters top; In this section, water feeds water spray thrower 22 and downward spray from import 24, and the rising flue gas fully contacts with shower water through washing filler 23, remove the ammonia that it is carried secretly, continue to rise, during by filler 21, the spray water of being carried secretly is merged into water droplet and descends and be removed, and discharges clean flue gas from exporting 12 at last.Demist section filler 21 is that specific area is greater than 300m
2/ m
3Filler, as big voidage ripple packing, silk screen or deflection plate etc., guarantee that generally the desulfurizing tower overall presure drop is below 1500Pa.Simultaneously, the absorption liquid through above-mentioned spray thrower ejections at different levels has absorbed the SO in the flue gas
2Drop to the bottom oxidation panel 40 of desulfurizing tower 10, oxidized force air oxidation.Being provided with percent opening in the oxidation panel 40 greater than 30% multilayer filler 41, generally is grid or sieve plate filler; Oxidation air and desulfurizing agent ammonia add from oxidation panel 40 bottom inlets 43, evenly distribute and ejection through air sparger 42.Feed liquid in the oxidation panel 40 is fed each desulfurization spraying layer 31,32,33 of absorber portion 30 through circulation line by circulating pump 61.Can extract absorption liquid by a pump and be delivered to three sections desulfurization layers, three pumps also can be set be delivered to corresponding desulfurization layer from oxidation panel different parts extraction absorption liquid respectively, specifically then by exhaust gas volumn and SO
2Content is determined.At least one feed pump 62 is used for the absorption liquid of oxidation panel 40 is delivered to rare sulphur ammonium spray thrower 51.At least one crystallization pump 63 is used for the spray thrower 52 that the sulphur ammonium slurry circulation of decrease temperature crystalline tower 50 is returned tower 50 condensing crystallizing that circulates; For preventing crystalline deposit, the high concentration ground paste that can be provided with in 53 pairs of towers of side direction agitator 50 stirs; The slip that reaches certain solid content in the decrease temperature crystalline tower 50 is delivered to after-treatment system by discharging pump 64 and is got the byproduct of ammonium sulfate chemical fertilizer.
Claims (6)
1. the double tower type flue gas desulfur device is made up of desulfurizing tower and cooling scrubbing tower, links to each other with exhaust gases passes between the two, and the cooling scrubbing tower is provided with former gas approach and sulphur ammonium slip outlet, and desulfurizing tower is provided with desulfurization absorbent inlet and clean exhanst gas outlet; Include washing demist section, absorber portion and oxidation panel in the desulfurizing tower from top to bottom, oxidation panel is provided with the oxidation air inlet; Absorber portion is provided with a plurality of spraying layers, and links to each other with oxidation panel by the feed liquid circulation line; The scrubbing tower top that it is characterized in that lowering the temperature is provided with the dense sulphur ammonium of upper strata rare sulphur ammonium spray thrower and lower floor spray thrower, wherein rare sulphur ammonium spray thrower links to each other with desulfurizing tower oxidation panel bottom feed liquid output pipe, and dense sulphur ammonium spray thrower links to each other with the cooling wash tower bottoms by the tower external circulation line.
2. double tower type flue gas desulfur device according to claim 1 is characterized in that the exhaust gases passes of lowering the temperature between scrubbing tower and the desulfurizing tower is provided with demister.
3. double tower type flue gas desulfur device according to claim 1 is characterized in that being provided with in the oxidation panel percent opening greater than 30% multilayer filler.
4. double tower type flue gas desulfur device according to claim 3 is characterized in that said filler is grid or sieve plate filler.
5. double tower type flue gas desulfur device according to claim 1 is characterized in that said demist section is provided with specific area greater than 300m
2/ m
3Filler.
6. double tower type flue gas desulfur device according to claim 1 is characterized in that said filler is ripple packing, silk screen or deflection plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920038132U CN201380039Y (en) | 2009-01-23 | 2009-01-23 | Double-tower flue gas desulphurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920038132U CN201380039Y (en) | 2009-01-23 | 2009-01-23 | Double-tower flue gas desulphurization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201380039Y true CN201380039Y (en) | 2010-01-13 |
Family
ID=41523513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920038132U Expired - Lifetime CN201380039Y (en) | 2009-01-23 | 2009-01-23 | Double-tower flue gas desulphurization device |
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|---|---|
| CN (1) | CN201380039Y (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247741A (en) * | 2011-07-15 | 2011-11-23 | 攀钢集团有限公司 | Flue gas desulfurization process |
| CN104722193A (en) * | 2015-03-06 | 2015-06-24 | 浙江蓝天求是环保股份有限公司 | Independent circulating wet desulphurization system and method |
| US20160030883A1 (en) * | 2013-04-24 | 2016-02-04 | Jiangsu New Century Jiangnan Environmental Protection Co., Ltd. | Method and apparatus for treating acidic tail gas by using ammonia process flue gas |
| CN105435618A (en) * | 2015-12-11 | 2016-03-30 | 凯天环保科技股份有限公司 | Desulfurization tower and wet-process flue gas desulphurization method thereof |
| US9370745B2 (en) * | 2013-04-24 | 2016-06-21 | Jiangsu New Century Jiangnan Environmental Protection Co., Ltd | Flue gas-treating method and apparatus for treating acidic tail gas by using ammonia process |
| CN107321146A (en) * | 2017-08-18 | 2017-11-07 | 江苏科行环保科技有限公司 | A kind of high cloud of dust desulfurization double tower double-cycle process and device |
| US10016721B1 (en) | 2017-05-25 | 2018-07-10 | Jiangnan Environmental Protection Group Inc. | Ammonia-based desufurization process and apparatus |
| CN108568204A (en) * | 2018-04-08 | 2018-09-25 | 郴州钖涛环保科技有限公司 | The washing recovery process of high-temperature flue gas during chlorinated gold extracting |
| US10092877B1 (en) | 2017-05-25 | 2018-10-09 | Jiangnan Environmental Protection Group Inc. | Dust removal and desulfurization of FCC exhaust gas |
| US10099170B1 (en) | 2017-06-14 | 2018-10-16 | Jiangnan Environmental Protection Group Inc. | Ammonia-adding system for ammonia-based desulfurization device |
| US10112145B1 (en) | 2017-09-07 | 2018-10-30 | Jiangnan Environmental Protection Group Inc. | Method for controlling aerosol production during absorption in ammonia desulfurization |
| US20190001267A1 (en) | 2017-07-03 | 2019-01-03 | Jiangnan Environmental Protection Group Inc. | Desulfurization absorption tower |
| US10207220B2 (en) | 2017-03-15 | 2019-02-19 | Jiangnan Environmental Protection Group Inc. | Method and apparatus for removing sulfur oxides from gas |
| CN109794157A (en) * | 2018-12-28 | 2019-05-24 | 苏州艾特斯环保设备有限公司 | A kind of incineration flue gas wet deacidification device and flue gas deacidification process |
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-
2009
- 2009-01-23 CN CN200920038132U patent/CN201380039Y/en not_active Expired - Lifetime
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| CN102247741A (en) * | 2011-07-15 | 2011-11-23 | 攀钢集团有限公司 | Flue gas desulfurization process |
| US20160030883A1 (en) * | 2013-04-24 | 2016-02-04 | Jiangsu New Century Jiangnan Environmental Protection Co., Ltd. | Method and apparatus for treating acidic tail gas by using ammonia process flue gas |
| US9370745B2 (en) * | 2013-04-24 | 2016-06-21 | Jiangsu New Century Jiangnan Environmental Protection Co., Ltd | Flue gas-treating method and apparatus for treating acidic tail gas by using ammonia process |
| CN104722193A (en) * | 2015-03-06 | 2015-06-24 | 浙江蓝天求是环保股份有限公司 | Independent circulating wet desulphurization system and method |
| CN105435618A (en) * | 2015-12-11 | 2016-03-30 | 凯天环保科技股份有限公司 | Desulfurization tower and wet-process flue gas desulphurization method thereof |
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| US11027234B2 (en) | 2018-04-13 | 2021-06-08 | Jiangnan Environmental Protection Group Inc. | Oxidization of ammonia desulfurization solution |
| US10953365B2 (en) | 2018-07-20 | 2021-03-23 | Jiangnan Environmental Protection Group Inc. | Acid gas treatment |
| US11529584B2 (en) | 2018-07-20 | 2022-12-20 | Jiangnan Environmental Protection Group Inc. | Acid gas treatment |
| CN109794157A (en) * | 2018-12-28 | 2019-05-24 | 苏州艾特斯环保设备有限公司 | A kind of incineration flue gas wet deacidification device and flue gas deacidification process |
| US11224838B2 (en) | 2019-12-26 | 2022-01-18 | Jiangnan Environmental Protection Group Inc. | Controlling aerosol production during absorption in ammonia-based desulfurization |
| US12467691B2 (en) | 2022-05-16 | 2025-11-11 | Jiangnan Environmental Protection Group Inc. | Method and device for waste heat recovery in ammonia-based desulfurization and decarbonization system |
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