CN104190228B - A kind of composite efficient energy-saving ammonia process desulfuration tower - Google Patents
A kind of composite efficient energy-saving ammonia process desulfuration tower Download PDFInfo
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- CN104190228B CN104190228B CN201410401237.0A CN201410401237A CN104190228B CN 104190228 B CN104190228 B CN 104190228B CN 201410401237 A CN201410401237 A CN 201410401237A CN 104190228 B CN104190228 B CN 104190228B
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- cell body
- shower
- absorption tower
- ammonium sulfate
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Abstract
The invention discloses a kind of composite efficient energy-saving ammonia process desulfuration tower, comprise pre-absorption tower and multistage absorption tower, described pre-absorption tower is connected by the first demister with multistage absorption tower, first cell body is installed bottom described prewashing column, first shower is installed above the first cell body, first cell body is connected with the first shower by the 3rd circulating pump, prewashing column upper end is connected with deduster, deduster has into mouth, described multistage absorption tower is provided with centrifuge, crystallizing evaporator and ammonium sulfate tank, described absorption tower is from bottom to up successively by the second cell body, first absorber portion and the second absorber portion composition.The present invention can make flue gas and ammoniacal liquor react more complete, and the utilization rate of ammonia absorption agent is higher.
Description
Technical field
The present invention relates to the technical field of desulfurizing tower, particularly a kind of technical field of composite efficient energy-saving ammonia process desulfuration tower.
Background technology
Sulfur dioxide affects larger gaseous contaminant in atmosphere pollution, has high risks to human body, environment and the ecosystem.Along with the increasingly stringent of environmental requirement, S0
2the problem of discharge more and more receives publicity.Sulfur dioxide mainly stems from the combustion process of the fossil fuel such as coal, oil, and the roasting of ore, the fume emission of smelting process.Wherein various burning boiler particularly power plant boiler smoke evacuation there is the features such as concentration is low, exhaust gas volumn is large, floating dust is many and be difficult to administer.
Wet process of FGD is the main sulfur method that domestic and international thermal power plant adopts always, and for a long time, the desulfurization of calcium method occupies the main status of sulfur removal technology, but this is owned by France in " abandoning " technique, and its desulfurization product gypsum is piled up and easily caused secondary pollution.The ammonia process of desulfurization belongs to recovery process, and the alkalescence of ammonia is better than calcium-based desulfurizing agent, and it absorbs SO
2reaction be solution-air or gas-solid/liquid/gas reactions, compared to the gas-solid reaction of calcium-based desulfurizing agent, ammonia process of desulfurization speed is faster, and reaction is more complete, and the utilization rate of absorbent is higher.
Summary of the invention
Object of the present invention solves the problems of the prior art exactly, a kind of composite efficient energy-saving ammonia process desulfuration tower is proposed, flue gas enters prewashing column after deduster, flow contact with the ammonium sulfate in the first cell body, flue gas is cooled to close to saturated dew-point temperature, ammonium sulfate is concentrated simultaneously, the heat of flue gas is fully utilized, thus avoid a large amount of consumption and the waste of energy, in multistage absorption tower, dilute ammonium sulfate solution counter current contacting in flue gas and the second cell body, ammonium sulfate circulated sprinkling, air is blasted to make ammonium sulfite solution oxidation wherein in ammonium sulfate in the second cell body, ammonia tank provides ammonia to be converted into ammonium sulfate in order to impel ammonium hydrogen sulfate, ensure ejecting liquid SO
2absorbability, the clean flue gas after desulfurization is discharged by exhaust opening after primary heater heats up, and flue gas and ammoniacal liquor can be made to react more completely, and the utilization rate of ammonia absorption agent is higher.
For achieving the above object, the present invention proposes a kind of composite efficient energy-saving ammonia process desulfuration tower, comprise prewashing column and multistage absorption tower, described prewashing column is connected by the first demister with multistage absorption tower, first cell body is installed bottom described prewashing column, first shower is installed above the first cell body, first cell body is connected with the first shower by the 3rd circulating pump, prewashing column upper end is connected with deduster, deduster has into mouth, described multistage absorption tower is provided with centrifuge, crystallizing evaporator and ammonium sulfate tank, described absorption tower is from bottom to up successively by the second cell body, first absorber portion and the second absorber portion composition, bottom second cell body, air inlet pipeline is installed, air inlet pipeline is connected with air pump and storage ammonia tank, second shower is installed in the first absorber portion, first water leg is installed below the second shower, first water leg is connected with ammonium sulfate tank, ammonium sulfate tank is connected with the second shower by the first circulating pump, first circulating pump is also connected with crystallizing evaporator, crystallizing evaporator is connected with ammonium sulfate tank, 3rd shower is installed in described second absorber portion, below 3rd shower, the second water leg is installed, second water leg is connected with the second cell body, second cell body is connected with the 3rd shower by the second circulating pump, the bottom on described absorption tower is provided with into mouth, the top on absorption tower is provided with exhaust opening, first cell body is connected by infusion pump with the second cell body.
As preferably, be provided with some corona wires in described deduster, described corona wire is provided with some pyramidal projections, and the center of pyramidal projections is provided with conical socket structure.
As preferably, also comprise gas mixing device, described air inlet pipeline is communicated with one another by longitudinal passages and lateral duct and forms, and air inlet pipeline surface has some ventholes, gas mixing device one end is connected with air inlet pipeline, the gas mixing device other end and air pump with store up ammonia tank and be connected.
As preferably, above described 3rd shower, the second demister is installed, has some S type passages in described second demister, between described exhaust opening and absorption tower, primary heater is installed.
As preferably, described first circulating pump is connected with crystallizing evaporator by secondary heater, and crystallizing evaporator is connected with ammonium sulfate tank by centrifuge, and centrifuge is connected with drying machine.
Beneficial effect of the present invention: in the present invention, flue gas enters prewashing column after deduster, flow contact with the ammonium sulfate in the first cell body, flue gas is cooled to close to saturated dew-point temperature, ammonium sulfate is concentrated simultaneously, the heat of flue gas is fully utilized, thus avoid a large amount of consumption and the waste of energy, in multistage absorption tower, dilute ammonium sulfate solution counter current contacting in flue gas and the second cell body, ammonium sulfate circulated sprinkling, air is blasted to make ammonium sulfite solution oxidation wherein in ammonium sulfate in the second cell body, ammonia tank provides ammonia to be converted into ammonium sulfate in order to impel ammonium hydrogen sulfate, ensure ejecting liquid SO
2absorbability, the clean flue gas after desulfurization is discharged by exhaust opening after primary heater heats up, and flue gas and ammoniacal liquor can be made to react more completely, and the utilization rate of ammonia absorption agent is higher.
Feature of the present invention and advantage will be described in detail by reference to the accompanying drawings by embodiment.
Accompanying drawing explanation
Fig. 1 is the main TV structure figure of a kind of composite efficient energy-saving of the present invention ammonia process desulfuration tower;
Fig. 2 is the main TV structure figure of deduster of the present invention;
Fig. 3 is the plan structure figure of air inlet pipeline of the present invention.
Detailed description of the invention
Consult Fig. 1, Fig. 2, Fig. 3, a kind of composite efficient energy-saving ammonia process desulfuration tower of the present invention, comprise prewashing column 1 and multistage absorption tower 4, described prewashing column 1 is connected by the first demister 15 with multistage absorption tower 4, first cell body 11 is installed bottom described prewashing column 1, first shower 12 is installed above first cell body 11, first cell body 11 is connected with the first shower 12 by the 3rd circulating pump 13, prewashing column 1 upper end is connected with deduster 14, deduster 14 has into mouth 141, described multistage absorption tower 4 is provided with centrifuge 5, crystallizing evaporator 6 and ammonium sulfate tank 7, described absorption tower 4 is from bottom to up successively by the second cell body 10, first absorber portion 2 and the second absorber portion 3 form, bottom second cell body 10, air inlet pipeline 101 is installed, air inlet pipeline 101 is connected with air pump 102 and storage ammonia tank 103, second shower 21 is installed in first absorber portion 2, first water leg 22 is installed below second shower 21, first water leg 22 is connected with ammonium sulfate tank 7, ammonium sulfate tank 7 is connected with the second shower 21 by the first circulating pump 81, first circulating pump 81 is also connected with crystallizing evaporator 6, crystallizing evaporator 6 is connected with ammonium sulfate tank 7, in described second absorber portion 3, the 3rd shower 31 is installed, second water leg 32 is installed below the 3rd shower 31, second water leg 32 is connected with the second cell body 10, second cell body 10 is connected with the 3rd shower 31 by the second circulating pump 82, the bottom on described absorption tower 4 is provided with into mouth, the top on absorption tower 4 is provided with exhaust opening 42, first cell body 11 is connected by infusion pump 84 with the second cell body 10.
In described deduster 14, some corona wires 142 are installed, described corona wire 142 is provided with some pyramidal projections 143, the center of pyramidal projections 143 is provided with conical socket structure 144, also comprise gas mixing device 104, described air inlet pipeline 101 is communicated with one another by longitudinal passages 105 and lateral duct 106 and forms, air inlet pipeline 101 surface has some ventholes 107, gas mixing device 104 one end is connected with air inlet pipeline 101, gas mixing device 104 other end and air pump 102 with store up ammonia tank 103 and be connected, above described 3rd shower 31, second demister 9 is installed, some S type passages 91 are had in described second demister 9, between described exhaust opening 42 and absorption tower 4, primary heater 43 is installed, described first circulating pump 81 is connected with crystallizing evaporator 6 by secondary heater 61, crystallizing evaporator 6 is connected with ammonium sulfate tank 7 by centrifuge 5, centrifuge 5 is connected with drying machine 51.
The course of work of the present invention:
A kind of composite efficient energy-saving ammonia process desulfuration tower of the present invention in the course of the work, flue gas enters prewashing column 1 after deduster, flow contact with the ammonium sulfate in the first cell body 11, flue gas is cooled to close to saturated dew-point temperature, ammonium sulfate is concentrated simultaneously, the heat of flue gas is fully utilized, thus avoid a large amount of consumption and the waste of energy, in multistage absorption tower 4, dilute ammonium sulfate solution counter current contacting in flue gas and the second cell body 10, ammonium sulfate circulated sprinkling, air is blasted to make ammonium sulfite solution oxidation wherein in ammonium sulfate in the second cell body 10, ammonia tank 103 provides ammonia to be converted into ammonium sulfate in order to impel ammonium hydrogen sulfate, ensure ejecting liquid SO
2absorbability, the clean flue gas after desulfurization is discharged by exhaust opening 42 after primary heater 43 heats up, and flue gas and ammoniacal liquor can be made to react more completely, and the utilization rate of ammonia absorption agent is higher.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (3)
1. a composite efficient energy-saving ammonia process desulfuration tower, it is characterized in that: comprise prewashing column (1) and multistage absorption tower (4), described prewashing column (1) is connected by the first demister (15) with multistage absorption tower (4), described prewashing column (1) bottom is provided with the first cell body (11), first cell body (11) top is provided with the first shower (12), first cell body (11) is connected with the first shower (12) by the 3rd circulating pump (13), prewashing column (1) upper end is connected with deduster (14), deduster (14) has into mouth (141), some corona wires (142) are installed in deduster (14), corona wire (142) is provided with some pyramidal projections (143), the center of pyramidal projections (143) is provided with conical socket structure (144), described multistage absorption tower (4) is provided with centrifuge (5), crystallizing evaporator (6) and ammonium sulfate tank (7), described absorption tower (4) is from bottom to up successively by the second cell body (10), first absorber portion (2) and the second absorber portion (3) composition, second cell body (10) bottom is provided with air inlet pipeline (101), air inlet pipeline (101) is connected with air pump (102) and storage ammonia tank (103), second shower (21) is installed in the first absorber portion (2), second shower (21) below is provided with the first water leg (22), first water leg (22) is connected with ammonium sulfate tank (7), ammonium sulfate tank (7) is connected with the second shower (21) by the first circulating pump (81), first circulating pump (81) is also connected with crystallizing evaporator (6), crystallizing evaporator (6) is connected with ammonium sulfate tank (7), 3rd shower (31) is installed in described second absorber portion (3), 3rd shower (31) below is provided with the second water leg (32), second water leg (32) is connected with the second cell body (10), second cell body (10) is connected with the 3rd shower (31) by the second circulating pump (82), 3rd shower (31) top is provided with the second demister (9), some S type passages (91) are had in described second demister (9), the bottom on described absorption tower (4) is provided with into mouth, the top on absorption tower (4) is provided with exhaust opening (42), primary heater (43) is installed between exhaust opening (42) and absorption tower (4), first cell body (11) is connected by infusion pump (84) with the second cell body (10).
2. a kind of composite efficient energy-saving ammonia process desulfuration tower as claimed in claim 1, it is characterized in that: also comprise gas mixing device (104), described air inlet pipeline (101) is communicated with one another by longitudinal passages (105) and lateral duct (106) and forms, air inlet pipeline (101) surface has some ventholes (107), gas mixing device (104) one end is connected with air inlet pipeline (101), gas mixing device (104) other end and air pump (102) with store up ammonia tank (103) and be connected.
3. a kind of composite efficient energy-saving ammonia process desulfuration tower as claimed in claim 1, it is characterized in that: described first circulating pump (81) is connected with crystallizing evaporator (6) by secondary heater (61), crystallizing evaporator (6) is connected with ammonium sulfate tank (7) by centrifuge (5), centrifuge (5) is connected with drying machine (51).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410401237.0A CN104190228B (en) | 2014-08-14 | 2014-08-14 | A kind of composite efficient energy-saving ammonia process desulfuration tower |
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| CN201410401237.0A CN104190228B (en) | 2014-08-14 | 2014-08-14 | A kind of composite efficient energy-saving ammonia process desulfuration tower |
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| CN104190228A CN104190228A (en) | 2014-12-10 |
| CN104190228B true CN104190228B (en) | 2016-04-13 |
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| CN201410401237.0A Expired - Fee Related CN104190228B (en) | 2014-08-14 | 2014-08-14 | A kind of composite efficient energy-saving ammonia process desulfuration tower |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104759195A (en) * | 2015-03-20 | 2015-07-08 | 金隆铜业有限公司 | Flue gas desulphurization system |
| CN105195002A (en) * | 2015-10-19 | 2015-12-30 | 云南亚太环境工程设计研究有限公司 | Ammonia process type double-cycle desulfurization and denitrification dust removal system |
| CN112460627B (en) * | 2019-08-21 | 2023-03-17 | 南京兆能节能科技有限公司 | Rotary air preheater with cleaning function and cleaning method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201324593Y (en) * | 2008-11-25 | 2009-10-14 | 上海洁美环保科技有限公司 | Wet ammonia flue gas desulphurization device |
| CN203355586U (en) * | 2013-06-03 | 2013-12-25 | 北京国信恒润能源环境工程技术有限公司 | Multi-stage-absorption ammonia desulphurization system |
| CN103657367A (en) * | 2013-12-13 | 2014-03-26 | 何金整 | Device and process for changing one-tower calcium desulphurization to double-tower ammonia desulphurization |
| CN204193768U (en) * | 2014-08-14 | 2015-03-11 | 诸暨洁球环保科技有限公司 | A kind of composite efficient energy-saving ammonia process desulfuration tower |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8353980B2 (en) * | 2008-12-05 | 2013-01-15 | Marsulex Environmental Technologies Corporation | Flue gas scrubbing apparatus and process |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201324593Y (en) * | 2008-11-25 | 2009-10-14 | 上海洁美环保科技有限公司 | Wet ammonia flue gas desulphurization device |
| CN203355586U (en) * | 2013-06-03 | 2013-12-25 | 北京国信恒润能源环境工程技术有限公司 | Multi-stage-absorption ammonia desulphurization system |
| CN103657367A (en) * | 2013-12-13 | 2014-03-26 | 何金整 | Device and process for changing one-tower calcium desulphurization to double-tower ammonia desulphurization |
| CN204193768U (en) * | 2014-08-14 | 2015-03-11 | 诸暨洁球环保科技有限公司 | A kind of composite efficient energy-saving ammonia process desulfuration tower |
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