CN105013314A - Flue gas filtration column - Google Patents
Flue gas filtration column Download PDFInfo
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- CN105013314A CN105013314A CN201510329729.8A CN201510329729A CN105013314A CN 105013314 A CN105013314 A CN 105013314A CN 201510329729 A CN201510329729 A CN 201510329729A CN 105013314 A CN105013314 A CN 105013314A
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- tower
- desulfurization
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- posterior circle
- slurry pool
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Abstract
The present invention discloses a flue gas filtration column. The flue gas filtration column comprises a desulfurization column. A downstream column and a countercurrent column separated from each other are at an upper part of the desulfurization column. The downstream column is provided with a flue gas inlet. The countercurrent column is provided with a flue gas outlet. A slurry pond is at a lower part of the desulfurization column. An anterior circulation desulfurization region is disposed in the downstream column. A posterior circulation desulfurization region is disposed in the countercurrent column. The anterior circulation desulfurization region is communicated with the slurry pond by an anterior circulation pump. The posterior circulation desulfurization region is communicated with the slurry pond by a posterior circulation pump. An outlet of the anterior circulation pump is communicated with the anterior circulation desulfurization region by an anterior circulation pipe. An outlet of the posterior circulation pump is communicated with the posterior circulation desulfurization region by a posterior circulation pipe. The outlet of the anterior circulation pump is further communicated with the slurry pond by an anterior reflux pipe. The outlet of the posterior circulation pump is further communicated with the slurry pond by a posterior reflux pipe. The slurry jets towards the center to form a slurry curtain, so as to sufficiently filter the flue gas, thereby ensuring the desulfurization effect.
Description
Technical field
The present invention relates to a kind of flue gas desulfurization technique, be specifically related to a kind of smoke filtration tower.
Background technology
Current single cycle smoke filtration Tower System mainly operates in middle low-sulfur coal area, can meet emission request completely.To part sulphur coal area, require that desulfuration efficiency reaches more than 98%, even require more than 99% could meet emission request, single cycle smoke filtration Tower System is utilized to meet emission request, smoke filtration tower will be very high, and energy consumption is also higher, sometimes just has to a smoke filtration tower to be divided into the series operation of two smoke filtration towers, but two smoke filtration tower series connection are taken up an area, are invested very greatly, are unfavorable for that high-efficiency and economic runs; And when traditional desulphurization system is shut down, slurry pool precipitation is serious, affects the desulfurization performance of slurries, is unfavorable for using.
Therefore, under the up-to-date discharge standard of national requirements, be necessary very much the desulfur technology developing high-efficiency low energy consumption, to meet the requirement of environmental protection, have better living space to the mankind.
Summary of the invention
In view of this, the invention provides a kind of smoke filtration tower, can while meeting desulfuration efficiency, reduce system energy consumption, investment reduction, occupation of land, reach again the up-to-date discharge standard of national requirements, desulfurized effect is good, is beneficial to environmental protection.
Smoke filtration tower of the present invention, comprises desulfurizing tower, and the top of described desulfurizing tower is the following current tower and countercurrent tower mutually separated, 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; For being communicated with the exhaust gases passes of following current tower and countercurrent tower above described slurry pool, front circulation desulfurization district is provided with in described following current tower, Posterior circle desulfurization zone is provided with in countercurrent tower, before described following current inner wall of tower correspondence, circulation desulfurization district and the corresponding Posterior circle desulfurization zone of countercurrent tower inwall are equipped with vertical spiral stream guidance blade, front circulation desulfurization district is communicated with slurry pool by front circulating pump, and Posterior circle desulfurization zone is communicated with slurry pool by Posterior circle pump; Described front circulation delivery side of pump is communicated with by front circulation pipe with between front circulation desulfurization district, is communicated with between Posterior circle delivery side of pump with Posterior circle desulfurization zone by Posterior circle pipe, and front circulation delivery side of pump is also communicated with slurry pool by front return duct; Posterior circle delivery side of pump is also communicated with slurry pool by rear return duct; Front circulation pipe and Posterior circle pipe stretch in corresponding front circulation desulfurization district and Posterior circle desulfurization zone along the helical flow path that corresponding vertical spiral stream guidance blade is formed in the shape of a spiral;
Further, the part of the helical flow path of the corresponding corresponding vertical spiral stream guidance blade formation of the tube wall of described front circulation pipe and Posterior circle pipe is provided with multiple squit hole;
Further, top, described following current Ta Neiqian circulation desulfurization district is provided with dry wet interface rinse-system, and in described countercurrent tower, top, Posterior circle desulfurization zone 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, one or more agitator is provided with in described slurry pool;
Further, described smoke filtration tower is the tower of U-shaped tower or other likeness in form.
Beneficial effect of the present invention is: the present invention arrange in smoke filtration tower simultaneously separate before circulation desulfurization district and Posterior circle desulfurization zone, front circulation desulfurization district, front circulating pump and slurry pool form front circulation desulfurization system jointly; Posterior circle desulfurization zone, Posterior circle pump and slurry pool form Posterior circle desulphurization system jointly; Front circulation desulfurization system and Posterior circle desulphurization system share a slurry pool, realize forming relatively independent double circulation desulphurization system in a smoke filtration tower with this, the desulfurization of flue gas is completed jointly by double circulation desulphurization system, slurries are formed slurries curtain to center ejection, can filter fully flue gas, ensure desulfurized effect.
The relatively independent operation of smoke filtration tower of the present invention, both ensure that higher desulfuration efficiency, and again reduced serum recycle amount and system energy consumption, and smoke filtration tower integral arrangement also reduces smoke filtration tower height degree, simplify the system of double circulation desulphurization, save investment; The present invention is particularly suitable for the flue gas desulfurization that burning high sulfur coal produces, and desulfuration efficiency can reach more than 99%, and desulfurized effect is good, is beneficial to environmental protection.
Relative to the desulphurization system of routine, smoke filtration tower of the present invention adopts U-shaped Deethanizer design, and contribute to abundant contact and the mixing of gas-liquid two-phase, the time of staying is longer, and desulfurized effect is better.The desulfurization slurry mass concentration of conventional desulphurization system is about 15%, and adopt smoke filtration tower, desulfurization slurry mass concentration is 20% ~ 25%, and concentration improves, and relative to two smoke filtration tower series connection, slurry pool volume is relatively little, cost of reducing investment outlay.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Fig. 1 is structural representation of the present invention, as shown in the figure, and smoke filtration tower of the present invention, comprise desulfurizing tower, the top of described desulfurizing tower 14 is the following current tower 2 and countercurrent tower 4 mutually separated, and following current tower 2 is provided with smoke inlet, countercurrent tower 4 is provided with exhanst gas outlet, and the bottom of desulfurizing tower 14 is slurry pool 9, for being communicated with the exhaust gases passes 16 of following current tower 2 and countercurrent tower 4 above described slurry pool 9, front circulation desulfurization district 15 is provided with in described following current tower 2, Posterior circle desulfurization zone 6 is provided with in countercurrent tower 4, before described following current tower 2 inwall correspondence, circulation desulfurization district 15 and the corresponding Posterior circle desulfurization zone 6 of countercurrent tower 4 inwall are equipped with vertical spiral stream guidance blade 17, front circulation desulfurization district 15 is communicated with slurry pool 9 by front circulating pump 12, and Posterior circle desulfurization zone 6 is communicated with slurry pool 9 by Posterior circle pump 7, the outlet of described front circulating pump 12 is communicated with by front circulation pipe 18 with between front circulation desulfurization district 15, and the outlet of Posterior circle pump 7 is communicated with by Posterior circle pipe 19 with between Posterior circle desulfurization zone 6, and front circulation delivery side of pump is also communicated with slurry pool by front return duct 20, Posterior circle delivery side of pump is also communicated with slurry pool by rear return duct 21, front circulation pipe 18 and Posterior circle pipe 19 stretch in corresponding front circulation desulfurization district 15 and Posterior circle desulfurization zone 6 along the helical flow path that corresponding vertical spiral stream guidance blade 17 is formed in the shape of a spiral, circulation desulfurization system before front circulation desulfurization district 15, front circulating pump 12 are formed jointly with slurry pool 9, Posterior circle desulfurization zone 6, Posterior circle pump 7 form Posterior circle desulphurization system jointly with slurry pool 9, front circulation desulfurization system and Posterior circle desulphurization system share a slurry pool 9, relatively independent double circulation desulphurization system is formed in a desulfurizing tower 14, the desulfurization of flue gas is completed jointly by double circulation desulphurization system, but the relatively independent operation of double circulation desulphurization system, slurries are formed slurries curtain to center ejection by the part that the front circulation pipe of the present embodiment and Posterior circle pipe stretch in corresponding following current tower and countercurrent tower, can filter fully flue gas, ensure desulfurized effect, front return duct 20 is connected to form front three-way pipe with front circulation pipe, rear return duct 21 is connected to form rear three-way pipe with Posterior circle pipe, when traditional desulphurization system is shut down, slurry pool precipitation is serious, affect the desulfurization performance of slurries, be unfavorable for using, the outlet of front circulating pump 12 and Posterior circle pump 7 is not only passed to corresponding front circulation desulfurization district 15 and Posterior circle desulfurization zone 6 by the present embodiment, but also have employed corresponding front three-way pipe and the outlet of front circulating pump 12 and Posterior circle pump 7 is communicated with between slurry pool 9 by rear three-way pipe, front three-way pipe, rear three-way pipe and corresponding front circulation desulfurization district 15, the pipeline section that Posterior circle desulfurization zone 6 is communicated with slurry pool 9 is all provided with the valve for controlling break-make, when desulphurization system is run, by front circulating pump 12 and Posterior circle pump 7, circulation desulfurization district 15 and Posterior circle desulfurization zone 6 provide slurries forward, before opening when desulphurization system is shut down, front three-way pipe closed by circulating pump 12 and Posterior circle pump 7 simultaneously, rear three-way pipe and corresponding front circulation desulfurization district 15, valve between Posterior circle desulfurization zone 6, and then realize circulating of slurries in slurry pool 9 by front circulating pump 12 and Posterior circle pump 7, slurries are effectively avoided to precipitate, ensure desulfurization performance, be beneficial to environmental protection, the liquid outlet that front three-way pipe and rear three-way pipe are communicated with slurry pool 9 is positioned at the liquid level of slurry pool 9 slurries once, before reducing the power consumption of circulating pump 12 and Posterior circle pump 7 avoid slurries to splash simultaneously and noise excessive.
In the present embodiment, the part of the helical flow path of the corresponding corresponding vertical spiral stream guidance blade formation of tube wall of described front circulation pipe 18 and Posterior circle pipe 19 is provided with multiple squit hole; The end of front circulation pipe 18 and Posterior circle pipe 19 is shut, slurries in front circulation pipe 18 and Posterior circle pipe 19 are sprayed by squit hole, and then spray in helical flow path, the involute that squit hole along circulation pipe 18 before corresponding and the uniform and hole heart line of squit hole of Posterior circle pipe 19 axial and circumferential is is basic circle with circulation pipe 18 before corresponding and Posterior circle pipe 19 inner circle; Front circulation pipe 18 and Posterior circle pipe 19 are provided with the helicla flute of the center line around pipe, make the slurries helical flow in front circulation pipe 18 and Posterior circle pipe 19, squit hole in conjunction with evolvent type can make slurries spray in vortex shape in helical flow path, be beneficial to flue gas fully to mix with slurries, ensure desulfurized effect.
In the present embodiment, top, described following current tower 2 Nei Qian circulation desulfurization district 15 is provided with dry wet interface rinse-system 1, and in described countercurrent tower 4, top, Posterior circle desulfurization zone 6 is 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, also can be 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 for supplementing appropriate desulfurizing agent in slurry pool 9.
In the present embodiment, described slurry pool 9 is also communicated with plasma discharge system 11, and the crystalline sulfuric acid salt formed in slurry pool 9 can effectively be discharged by plasma discharge system 11.
In the present embodiment, in described slurry pool 9, be provided with one or more agitator (being respectively agitator 10 and agitator 8 in figure); The agitating mode of agitator can be that impeller stirs, and also can be other agitating modes such as flow-disturbing stirring; Agitator major function prevents 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 also can be various possible combination or the mode of texturing such as U-shaped circular tower or U-shaped circumference tower.
In the present invention, demister 3 can be dull and stereotyped or chevron shaped fixed board-like demister 3, also can be other forms such as the 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) of front circulation desulfurization district 15 and Posterior circle desulfurization zone 6 absorbs, but also can be the various possible form such as spray+fluid column (or liquid curtain) or spray+spray-absorption.
Use the sulfur removal technology of smoke filtration tower of the present invention, former flue gas enters desulfurizing tower 14 from smoke inlet, after dry wet interface rinse-system 1, enter front circulation desulfurization district 15, then in front circulation desulfurization district 15 by desulfurization slurry absorbing and removing SO that front circulating pump 12 provides
2, desulfurization slurry absorbs SO
2after fall in slurry pool 9; The exhaust gases passes 16 of neat stress above slurry pool 9 after premenstrual circulation desulfurization district 15 processes enters Posterior circle desulfurization zone 6, then in Posterior circle desulfurization zone 6 by the further absorbing and removing SO of desulfurization slurry that Posterior circle pump 7 provides
2, desulfurization slurry absorbs SO
2after fall in slurry pool 9, through Posterior circle desulfurization zone 6 process after neat stress enter demister 3 demist dedusting after, from exhanst gas outlet discharge desulfurizing tower 14.
Absorb SO
2after the desulfurization slurry fallen in slurry pool 9 provide oxygen to carry out oxidation reaction by oxidation air system 13, generate sulfate crystallization.
Desulfurizing agent is supplemented in slurry pool 9 that (it can be supplement as a slurry that desulfurizing agent supplements by desulfurizing agent replenishment system 5, also can be supplement with other forms such as powders), the crystalline sulfuric acid salt simultaneously in slurry pool 9 discharges laggard row relax through plasma discharge system 11.
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 up of calcium base or Mg-base desulfurizing agent.
In the present invention, the desulfurization of flue gas is completed jointly by double circulation desulphurization system, the relatively independent operation of double circulation desulphurization system, both ensure that higher desulfuration efficiency, again reduce serum recycle amount and system energy consumption, and desulfurizing tower 14 integral arrangement also reduces desulfurizing tower 14 height, simplifies the system of double circulation desulphurization, has saved investment; The present invention is particularly suitable for the flue gas desulfurization that burning high sulfur coal produces, and desulfuration efficiency can reach more than 99%.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by referring to the preferred embodiments of the present invention, invention has been described, but those of ordinary skill in the art is to be understood that, various change can be made to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (8)
1. a smoke filtration tower, is characterized in that: comprise desulfurizing tower, and the top of described desulfurizing tower is the following current tower and countercurrent tower mutually separated, 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; For being communicated with the exhaust gases passes of following current tower and countercurrent tower above described slurry pool, front circulation desulfurization district is provided with in described following current tower, Posterior circle desulfurization zone is provided with in countercurrent tower, before described following current inner wall of tower correspondence, circulation desulfurization district and the corresponding Posterior circle desulfurization zone of countercurrent tower inwall are equipped with vertical spiral stream guidance blade, front circulation desulfurization district is communicated with slurry pool by front circulating pump, and Posterior circle desulfurization zone is communicated with slurry pool by Posterior circle pump; Described front circulation delivery side of pump is communicated with by front circulation pipe with between front circulation desulfurization district, is communicated with between Posterior circle delivery side of pump with Posterior circle desulfurization zone by Posterior circle pipe, and front circulation delivery side of pump is also communicated with slurry pool by front return duct; Posterior circle delivery side of pump is also communicated with slurry pool by rear return duct; Front circulation pipe and Posterior circle pipe stretch in corresponding front circulation desulfurization district and Posterior circle desulfurization zone in the shape of a spiral along the helical flow path that corresponding vertical spiral stream guidance blade is formed.
2. smoke filtration tower according to claim 1, is characterized in that: the part of the helical flow path of the corresponding corresponding vertical spiral stream guidance blade formation of tube wall of described front circulation pipe and Posterior circle pipe is provided with multiple squit hole.
3. smoke filtration tower according to claim 2, is characterized in that: top, described following current Ta Neiqian circulation desulfurization district is provided with dry wet interface rinse-system; In described countercurrent tower, top, Posterior circle desulfurization zone is provided with demister.
4. smoke filtration tower according to claim 3, is characterized in that: described slurry pool is also communicated with oxidation air system.
5. smoke filtration tower according to claim 4, is characterized in that: described slurry pool is also communicated with desulfurizing agent replenishment system.
6. smoke filtration tower according to claim 5, is characterized in that: described slurry pool is also communicated with plasma discharge system.
7. smoke filtration tower according to claim 6, is characterized in that: be provided with one or more agitator in described slurry pool.
8. smoke filtration tower according to claim 7, is characterized in that: described smoke filtration tower is the tower of U-shaped tower or other likeness in form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510329729.8A CN105013314A (en) | 2015-06-15 | 2015-06-15 | Flue gas filtration column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510329729.8A CN105013314A (en) | 2015-06-15 | 2015-06-15 | Flue gas filtration column |
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| CN105013314A true CN105013314A (en) | 2015-11-04 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3422738B2 (en) * | 2000-01-14 | 2003-06-30 | 三菱重工業株式会社 | Exhaust gas desulfurization method and system |
| CN102794103A (en) * | 2012-09-04 | 2012-11-28 | 中电投远达环保工程有限公司 | Double circulation U-shaped tower desulfurization system and process |
| CN202860335U (en) * | 2012-09-17 | 2013-04-10 | 汨罗市环保设备制造有限公司 | Desulfuration dust remover |
| CN103381333A (en) * | 2013-07-25 | 2013-11-06 | 中能服(北京)节能投资有限公司 | Device and method for dust removal and desulphurization through wet method |
| CN103566686A (en) * | 2012-07-22 | 2014-02-12 | 吴舒克 | Assemble type flue gas dust collector |
| CN203725009U (en) * | 2014-02-21 | 2014-07-23 | 中电投远达环保工程有限公司 | Single-tower and double-circulation desulfurization system |
| CN104874283A (en) * | 2015-06-15 | 2015-09-02 | 重庆广播电视大学 | Desulfurizing tower |
-
2015
- 2015-06-15 CN CN201510329729.8A patent/CN105013314A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3422738B2 (en) * | 2000-01-14 | 2003-06-30 | 三菱重工業株式会社 | Exhaust gas desulfurization method and system |
| CN103566686A (en) * | 2012-07-22 | 2014-02-12 | 吴舒克 | Assemble type flue gas dust collector |
| CN102794103A (en) * | 2012-09-04 | 2012-11-28 | 中电投远达环保工程有限公司 | Double circulation U-shaped tower desulfurization system and process |
| CN202860335U (en) * | 2012-09-17 | 2013-04-10 | 汨罗市环保设备制造有限公司 | Desulfuration dust remover |
| CN103381333A (en) * | 2013-07-25 | 2013-11-06 | 中能服(北京)节能投资有限公司 | Device and method for dust removal and desulphurization through wet method |
| CN203725009U (en) * | 2014-02-21 | 2014-07-23 | 中电投远达环保工程有限公司 | Single-tower and double-circulation desulfurization system |
| CN104874283A (en) * | 2015-06-15 | 2015-09-02 | 重庆广播电视大学 | Desulfurizing tower |
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