CN203725009U - Single-tower and double-circulation desulfurization system - Google Patents
Single-tower and double-circulation desulfurization system Download PDFInfo
- Publication number
- CN203725009U CN203725009U CN201420076517.4U CN201420076517U CN203725009U CN 203725009 U CN203725009 U CN 203725009U CN 201420076517 U CN201420076517 U CN 201420076517U CN 203725009 U CN203725009 U CN 203725009U
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- China
- Prior art keywords
- tower
- circulation
- desulfurization
- slurry pool
- double
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- Expired - Lifetime
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 86
- 230000023556 desulfurization Effects 0.000 title claims abstract description 79
- 239000002002 slurry Substances 0.000 claims abstract description 57
- 239000000779 smoke Substances 0.000 claims abstract description 5
- 230000003009 desulfurizing effect Effects 0.000 claims description 38
- 239000007789 gas Substances 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003546 flue gas Substances 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 239000003245 coal Substances 0.000 abstract description 5
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- 239000011593 sulfur Substances 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical class OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000004577 thatch Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a single-tower and double-circulation desulfurization system. A front circulation desulfurization area and a back circulation desulfurization area which are mutually independent are arranged at the upper part of a desulfurization tower; the front circulation desulfurization area, a front circulation pump and a slurry tank jointly form a front circulation desulfurization system; the back circulation desulfurization area, a back circulation pump and the slurry tank jointly form a back circulation desulfurization system; and the front circulation desulfurization system and the back circulation desulfurization system share one slurry tank, so that a relatively independent double-circulation desulfurization system is formed in one desulfurization tower, and smoke desulfurization is finished by the double-circulation desulfurization system jointly. With the adoption of the single-tower and double-circulation desulfurization system, the higher desulfurization efficiency is guaranteed, the slurry circulation amount and the system energy consumption are reduced, further, by virtue of the overall arrangement of the desulfurization tower, the height of the desulfurization tower is reduced, and the double-circulation desulfurization system is simplified; and the single-tower and double-circulation desulfurization system is particularly applicable to desulfurization of flue gas generated by burning high-sulfur coal, and the desulfurization efficiency is higher than 99%.
Description
Technical field
The utility model relates to a kind of flue gas desulfurization technique, is specifically related to a kind of single tower double circulation desulphurization system.
Background technology
The SO of up-to-date fossil-fuel power plant atmospheric pollutant emission standard (GB13223-2011)
2emission limit improves larger, and General Requirements is at 100mg/N m
3in, local area requires 50mg/Nm
3.
Current single cycle desulfurizing tower system mainly operates in middle low-sulfur coal area, can meet emission request completely.To part sulphur coal area, require desulfuration efficiency to reach more than 98%, even require more than 99% could meet emission request, utilize single cycle desulfurizing tower system will meet emission request, desulfurizing tower will be very high, and energy consumption is also higher, sometimes just has to a desulfurizing tower to be divided into two desulfurizing tower series operations, but the series connection of two desulfurizing towers is taken up an area, investment is very large, is unfavorable for high-efficiency and economic operation.
Therefore, under the up-to-date discharge standard of national requirements, be necessary very much to develop the desulfur technology of high-efficiency low energy consumption, to meet the requirement of environmental protection, to the mankind, have better living space.
Utility model content
In view of this, the utility model provides a kind of single tower double circulation desulphurization system, can when meeting desulfuration efficiency, reduce system energy consumption, saves investment, takes up an area, and reaches again the up-to-date discharge standard of national requirements.
Single tower double circulation desulphurization system of the present utility model, comprise desulfurizing tower, the top of described desulfurizing tower is following current tower and the countercurrent tower of mutually separating, following current tower is provided with smoke inlet, countercurrent tower is provided with exhanst gas outlet, the bottom of desulfurizing tower is slurry pool, described slurry pool top is for being communicated with the exhaust gases passes of following current tower and countercurrent tower, front circulation desulfurization district is set in described following current tower, rear circulation desulfurization district is set in countercurrent tower, described front circulation desulfurization district is communicated with slurry pool by front circulating pump, and rear circulation desulfurization district is communicated with slurry pool by rear circulating pump;
Further, top, described following current Ta Neiqian circulation desulfurization district is provided with dry wet interface rinse-system, and top, described countercurrent tower Nei Hou circulation desulfurization district is provided with demister;
Further, described slurry pool is also communicated with oxidation air system;
Further, described slurry pool is also communicated with desulfurizing agent replenishment system;
Further, described slurry pool is also communicated with plasma discharge system;
Further, in described slurry pool, be provided with one or more agitators;
Further, described desulfurizing tower is the tower of U-shaped tower or other likeness in form.
The beneficial effects of the utility model are: the utility model arranges separate front circulation desulfurization district He Hou circulation desulfurization district in desulfurizing tower simultaneously, circulation desulfurization system before the common formation of front circulation desulfurization district, front circulating pump and slurry pool; Circulation desulfurization system after the common formation of rear circulation desulfurization district, rear circulating pump and slurry pool; Front circulation desulfurization system and rear circulation desulfurization system share a slurry pool, with this, realize and in a desulfurizing tower, form relatively independent double circulation desulphurization system, and the desulfurization of flue gas is completed jointly by double circulation desulphurization system.
The relatively independent operation of single tower double circulation desulphurization system of the present utility model, both guaranteed higher desulfuration efficiency, and reduced again slurries internal circulating load and system energy consumption, and desulfurizing tower integral arrangement has also reduced desulfurizing tower height, simplify the system of double circulation desulphurization, saved investment; The utility model flue gas desulfurization that sulphur coal produces that is particularly suitable for burning, desulfuration efficiency can reach more than 99%.
With respect to conventional desulphurization system, single tower double circulation desulphurization system of the present utility model adopts U-shaped tower design, contributes to abundant contact and the mixing of gas-liquid two-phase, and the time of staying is longer, and desulfurized effect is better.The desulfurization slurry mass concentration of conventional desulphurization system is 15% left and right, adopts single tower double circulation desulphurization system, and desulfurization slurry mass concentration is 20%～25%, and concentration improves, and with respect to two desulfurizing tower series connection, slurry pool volume is relatively little, the cost of reducing investment outlay.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Fig. 1 is structural representation of the present utility model, as shown in the figure, single tower double circulation desulphurization system of the present utility model, comprise desulfurizing tower 14, the top of described desulfurizing tower 14 is following current tower 2 and the countercurrent tower 4 of mutually separating, following current tower 2 is provided with smoke inlet, countercurrent tower 4 is provided with exhanst gas outlet, the bottom of desulfurizing tower 14 is slurry pool 9, described slurry pool 9 tops are for being communicated with the exhaust gases passes 16 of following current tower 2 and countercurrent tower 4, the interior front circulation desulfurization district 15 that arranges of described following current tower 2, the interior rear circulation desulfurization district 6 that arranges of countercurrent tower 4, described front circulation desulfurization district 15 is communicated with slurry pool 9 by front circulating pump 12, rear circulation desulfurization district 6 is communicated with slurry pool 9 by rear circulating pump 7, front circulation desulfurization district 15, circulation desulfurization system before front circulating pump 12 forms with slurry pool 9 is common, rear circulation desulfurization district 6, rear circulating pump 7 and the rear circulation desulfurization system of the common formation of slurry pool 9, front circulation desulfurization system and rear circulation desulfurization system share a slurry pool 9, and a double circulation desulphurization system that the interior formation of desulfurizing tower 14 is relatively independent, the desulfurization of flue gas is completed jointly by double circulation desulphurization system, but the relatively independent operation of double circulation desulphurization system.
In the present embodiment, 15 tops, described following current tower 2 Nei Qian circulation desulfurization district are provided with dry wet interface rinse-system 1, and 6 tops, described countercurrent tower 4 Nei Hou circulation desulfurization district are provided with demister 3.
In the present embodiment, described slurry pool 9 is also communicated with oxidation air system 13, and the oxidation air cloth air port of oxidation air system 13 can be thatch rifle, can be also other forms such as plug flat.
In the present embodiment, described slurry pool 9 is also communicated with desulfurizing agent replenishment system 5, and desulfurizing agent replenishment system 5 is for supplementing appropriate desulfurizing agent to slurry pool 9 is interior.
In the present embodiment, described slurry pool 9 is also communicated with plasma discharge system 11, and plasma discharge system 11 can effectively be discharged the crystalline sulfuric acid salt of slurry pool 9 interior formation.
In the present embodiment, in described slurry pool 9, be provided with one or more agitators (being respectively agitator 10 and agitator 8 in figure); The agitating mode of agitator can be that impeller stirs, and can be also other agitating modes such as flow-disturbing stirring; Agitator major function is to prevent precipitation, oxidation reinforced effect.
In the present embodiment, described desulfurizing tower 14 is the tower of U-shaped tower or other likeness in form, the preferred U-shaped squarer of structure of desulfurizing tower 14, but can be also various possible combinations or the modes of texturing such as U-shaped circular tower or U-shaped circumference tower.
In the utility model, demister 3 can be dull and stereotyped or chevron shaped fixed board-like demister 3, can be also other forms such as combination of wet electrical dust precipitator or fixed board-like demister 3 and wet electrical dust precipitator; The preferred fluid column of absorpting form (or liquid curtain) in front circulation desulfurization district 15He Hou circulation desulfurization district 6 absorbs, but can be also the various possible forms such as spray+fluid column (or liquid curtain) or spray+spray-absorption.
Use the sulfur removal technology of single tower double circulation desulphurization system of the present utility model, former flue gas enters desulfurizing tower 14 from smoke inlet, after dry wet interface rinse-system 1, enter front circulation desulfurization district 15, then the interior desulfurization slurry absorbing and removing SO being provided by front circulating pump 12 in Qian circulation desulfurization district 15
2, desulfurization slurry absorbs SO
2after fall in slurry pool 9; Clean flue gas after premenstrual circulation desulfurization district 15 processes is circulation desulfurization district 6, the then further absorbing and removing SO of the interior desulfurization slurry being provided by rear circulating pump 7 in Hou circulation desulfurization district 6 from the exhaust gases passes 16 of slurry pool 9 tops enters
2, desulfurization slurry absorbs SO
2after fall in slurry pool 9, the clean flue gas after Jing Hou circulation desulfurization district 6 processes enters after demister 3 demist dedustings, from exhanst gas outlet, discharges desulfurizing tower 14.
Absorb SO
2after the desulfurization slurry that falls in slurry pool 9 by oxidation air system 13, provide oxygen to carry out oxidation reaction, generate sulfate crystallization.
Desulfurizing agent replenishment system 5 is supplemented to (it can be to supplement with slurries form that desulfurizing agent supplements, and can be also to supplement with other forms such as powders) in slurry pool 9 by desulfurizing agent, and the crystalline sulfuric acid salt in slurry pool 9 is processed after plasma discharge system 11 is discharged simultaneously.
Desulfurization slurry pH value in front circulation and in oxidation pond 7 is 5～6, is conducive to sulphate crystal, and improves desulfuration efficiency, reduces liquid-gas ratio; Desulfurization slurry mass concentration in slurry pool 9 is 20%～25%; Described desulfurization slurry is made by calcium base or Mg-base desulfurizing agent.
In the utility model, the desulfurization of flue gas is completed jointly by double circulation desulphurization system, the relatively independent operation of double circulation desulphurization system, both guaranteed higher desulfuration efficiency, slurries internal circulating load and system energy consumption have been reduced again, and desulfurizing tower 14 integral arrangement have also reduced desulfurizing tower 14 height, simplified the system of double circulation desulphurization, saved investment; The utility model flue gas desulfurization that sulphur coal produces that is particularly suitable for burning, desulfuration efficiency can reach more than 99%.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although by the utility model being described with reference to preferred embodiment of the present utility model, but those of ordinary skill in the art is to be understood that, can to it, make various changes in the form and details, and not depart from the spirit and scope of the present utility model that appended claims limits.
Claims (7)
1. a single tower double circulation desulphurization system, is characterized in that: comprise desulfurizing tower, the top of described desulfurizing tower is following current tower and the countercurrent tower of mutually separating, and following current tower is provided with smoke inlet, and countercurrent tower is provided with exhanst gas outlet, and the bottom of desulfurizing tower is slurry pool; Described slurry pool top is for being communicated with the exhaust gases passes of following current tower and countercurrent tower, in described following current tower, be provided with front circulation desulfurization district, in countercurrent tower, be provided with rear circulation desulfurization district, described front circulation desulfurization district is communicated with slurry pool by front circulating pump, and rear circulation desulfurization district is communicated with slurry pool by rear circulating pump.
2. single tower double circulation desulphurization system according to claim 1, is characterized in that: top, described following current Ta Neiqian circulation desulfurization district is provided with dry wet interface rinse-system; Top, described countercurrent tower Nei Hou circulation desulfurization district is provided with demister.
3. single tower double circulation desulphurization system according to claim 1, is characterized in that: described slurry pool is also communicated with oxidation air system.
4. single tower double circulation desulphurization system according to claim 1, is characterized in that: described slurry pool is also communicated with desulfurizing agent replenishment system.
5. single tower double circulation desulphurization system according to claim 1, is characterized in that: described slurry pool is also communicated with plasma discharge system.
6. single tower double circulation desulphurization system according to claim 1, is characterized in that: in described slurry pool, be provided with one or more agitators.
7. single tower double circulation desulphurization system according to claim 1, is characterized in that: described desulfurizing tower is the tower of U-shaped tower or other likeness in form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420076517.4U CN203725009U (en) | 2014-02-21 | 2014-02-21 | Single-tower and double-circulation desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420076517.4U CN203725009U (en) | 2014-02-21 | 2014-02-21 | Single-tower and double-circulation desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203725009U true CN203725009U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420076517.4U Expired - Lifetime CN203725009U (en) | 2014-02-21 | 2014-02-21 | Single-tower and double-circulation desulfurization system |
Country Status (1)
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| CN (1) | CN203725009U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923064A (en) * | 2015-06-15 | 2015-09-23 | 重庆广播电视大学 | Flue gas desulphurization system |
| CN104941433A (en) * | 2015-06-15 | 2015-09-30 | 重庆广播电视大学 | Double-circulation filtration column |
| CN104941434A (en) * | 2015-06-15 | 2015-09-30 | 重庆广播电视大学 | Flue gas purifying device |
| CN105013314A (en) * | 2015-06-15 | 2015-11-04 | 重庆广播电视大学 | Flue gas filtration column |
| CN105536494A (en) * | 2015-12-30 | 2016-05-04 | 廖厚伍 | Single-tower pH double-region double-circulation desulfurization process |
| CN105582798A (en) * | 2016-03-09 | 2016-05-18 | 周紫阳 | Waste gas treatment device |
| CN109224794A (en) * | 2018-09-29 | 2019-01-18 | 南京硫研环保科技有限公司 | A kind of integrated efficient absorption reaction device |
-
2014
- 2014-02-21 CN CN201420076517.4U patent/CN203725009U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923064A (en) * | 2015-06-15 | 2015-09-23 | 重庆广播电视大学 | Flue gas desulphurization system |
| CN104941433A (en) * | 2015-06-15 | 2015-09-30 | 重庆广播电视大学 | Double-circulation filtration column |
| CN104941434A (en) * | 2015-06-15 | 2015-09-30 | 重庆广播电视大学 | Flue gas purifying device |
| CN105013314A (en) * | 2015-06-15 | 2015-11-04 | 重庆广播电视大学 | Flue gas filtration column |
| CN105536494A (en) * | 2015-12-30 | 2016-05-04 | 廖厚伍 | Single-tower pH double-region double-circulation desulfurization process |
| CN105582798A (en) * | 2016-03-09 | 2016-05-18 | 周紫阳 | Waste gas treatment device |
| CN109224794A (en) * | 2018-09-29 | 2019-01-18 | 南京硫研环保科技有限公司 | A kind of integrated efficient absorption reaction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Nie Hua Inventor after: Yin Zhengming Inventor after: Yu Jiangtao Inventor after: Li Yuntao Inventor after: Hong Yan Inventor after: Zhou Xiaojin Inventor before: Nie Hua Inventor before: Yin Zhengming Inventor before: Yu Jiangtao Inventor before: Li Yuntao Inventor before: Zhou Xiaojin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: NIE HUA YIN ZHENGMING YU JIANGTAO LI YUNTAO ZHOU XIAOJIN TO: NIE HUA YIN ZHENGMING YU JIANGTAO LI YUNTAO HONG YAN ZHOU XIAOJIN |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
|
| CX01 | Expiry of patent term |