CN103791510A - Boiler flue gas treatment system - Google Patents
Boiler flue gas treatment system Download PDFInfo
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- CN103791510A CN103791510A CN201310701315.4A CN201310701315A CN103791510A CN 103791510 A CN103791510 A CN 103791510A CN 201310701315 A CN201310701315 A CN 201310701315A CN 103791510 A CN103791510 A CN 103791510A
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Abstract
The invention discloses a boiler flue gas treatment system which comprises a boiler, an efficient catalytic reaction device, a demisting dewaterer, an exhaust fan, a sedimentation device, a slurry pump, a water screen desulfurization deduster and a water pump. The boiler, the water screen desulfurization deduster, the demisting dewaterer, the efficient catalytic reaction device and a smoke vent are connected sequentially through connecting pipes. The boiler flue gas treatment system is suitable for being widely applied to the treatment field of various tail gases, and has the advantages of high adsorbability, purification efficiency and waste water utilization rate, long service life and the like.
Description
Technical field
The invention belongs to tail gas desulfur technology field, relate to a kind of boiler flue gas treatment system.
Background technology
At present, a lot of urban air sulfur dioxide pollutions of China are serious, and China's Acid Rain Pollution is not only clearly better in recent years, and some areas also present increases the weight of trend.Show according to China Environmental State Bulletin: 1926.6 ten thousand tons of national SO 2 in waste gas total emission volumns.Wherein 1,562 ten thousand tons of the discharge capacitys of industrial source, 364.6 ten thousand tons of the source of incomes.Show according to AUTHORITATIVE DATA, because of acid rain, directly or indirectly loss is up to more than 1,000 hundred million yuan every year in China, and sulfur dioxide pollution is the main cause that forms acid rain.
The main emission of boiler combustion has sulfur dioxide and dust, and wherein sulfur dioxide is one of major pollutants that cause acid rain.At present, mainly control the pollution of sulfur dioxide by Wet Flue Gas Desulfurization Technology, but Wet Flue Gas Desulfurization Technology can produce a large amount of waste water in sweetening process, but in waste water, contain a large amount of impurity as suspension, oversaturated sulphite, sulfate and heavy metal, be much wherein in national environmental standard, to require the strict first kind pollutant of controlling, need process again this waste water.
Chinese patent: number of patent application 201120177328.2, notification number CN202087226 U, date of publication 2011.12.28, this utility model relates to a kind of boiler devulcanizer, comprise boiler waste gas blast pipe, it is characterized in that: described boiler waste gas blast pipe is connected with pretreatment unit air inlet pipe, boiler waste gas order after preliminary filtration is led to macromolecular filter membrane dust arrester, plasma electric field decomposition apparatus and efficiently catalyzing and oxidizing reaction unit, the blast pipe of described efficiently catalyzing and oxidizing reaction unit directly passes into atmosphere, this boiler devulcanizer has absorption | and raw strong, specific area is large, permeability is high, purification efficiency is high, long service life, change the advantages such as easy.
Chinese patent: number of patent application 201120036791.5, notification number CN202044896 U, day for announcing 2011.11.23, the tail gas desulphurizing system of this kind of boiler, comprise boiler, deduster, shower water feeding mechanism, spray wastewater treatment equipment and chimney, described boiler is respectively equipped with pipeline with chimney and is connected with deduster.Described shower water feeding mechanism comprises PO wastewater disposal basin and clear water reserviors, and described PO wastewater disposal basin, described clear water reserviors and described deduster are connected successively by band pipeline.Described spray wastewater treatment equipment comprises sewage-treatment plant and effluent settling chamber, and described sewage-treatment plant, described effluent settling chamber and described deduster are connected successively by pipeline.The spray of the epoxy propane waste water containing Ca (OH) 2 desulfurization that this utility model utilizes production of propylene oxide device to produce, utilize epoxy propane waste water to replace the water for dust removal of industry water as deduster, reduced just using of industry water: utilize the SO 2 in Ca (OH) 2 tail gas in waste water simultaneously, make exhaust emissions meet the requirement of environmental protection, reduce the pH value of PO waste water, also alleviated the load of sewage disposal workshop section.
Chinese patent: number of patent application 201210405686.3, notification number CN103058435 A, day for announcing 2013.04. 24, method and the device of this disclosure of the invention a kind of circular treatment boiler hot flue gas and desulfurization wastewater, 1) desulfurization wastewater is left in sedimentation basin; 2) hot flue gas is passed in electrostatic precipitator: desulfurization wastewater is introduced in atomizing lance; 3) air is imported in atomizing lance, air and desulfurization wastewater are mixed in atomizing lance, form waste water foam stream; 4) waste water foam stream is injected in electrostatic precipitator, forms the cooling flue gas with desulfurization wastewater precipitate; 5) cooling flue gas is sent into and in absorption tower, carried out desulfurization processing; 6) cooling flue gas becomes desulfurizing and purifying gas, and the waste water producing in desulfurization processing procedure is that desulfurization wastewater passes in sedimentation basin; 7) form and utilize boiler hot flue gas evaporation desulfurization wastewater, and utilize desulfurization wastewater by the continuous cyclic process of the cooling of boiler hot flue gas and dedusting.This invention has improved wastewater treatment and recycling rate of waterused, improves efficiency of dust collection, has reduced toxic emission, and reduced desulfurization disposal cost.
Although comprehensive above-mentioned patent has solved more present technical problems, also exists bad desulfurization effects, the problem that water reuse rate is not high.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of desulfurized effect better, the boiler flue gas treatment system that water reuse rate is higher.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of boiler flue gas treatment system, comprises boiler, efficient catalytic reaction unit, demist dehydrator, air exhauster, settler, slush pump composition, wherein: also include cascade desulfurizing dust-collector and water pump; Described boiler, cascade desulfurizing dust-collector, demist dehydrator, efficient catalytic reaction unit and smoke exhaust pipe are connected successively with tube connector; The tube connector that described cascade desulfurizing dust-collector is connected with demist dehydrator is provided with an air exhauster; The bottom of described cascade desulfurizing dust-collector is provided with sewage draining exit, and the sewage draining exit of cascade desulfurizing dust-collector connects settler by blow-off pipe.
Above-described cascade desulfurizing dust-collector is provided with pretreatment unit, water replanishing device, atomization jetting device and cascade; Before described pretreatment unit cascade, atomization jetting device is located at cascade rear.
Above-described pretreatment unit is provided with air distribution plate and steel wire; On described air distribution plate, be provided with uniformly some wind distributing holes.
Above-described settler comprises sedimentation basin, flocculation basin and clear water reserviors, and cascade desulfurizing dust-collector is connected to sedimentation basin by blow-off pipe, and water pump is located in clear water reserviors, and water pump connects atomization jetting device and water replanishing device.
Above-described sedimentation basin can be made as the sedimentation basin of multiple series connection.
Above-described flocculation basin is provided with flocculant feeding device.
The above-described slush pump that is provided with bottom sedimentation basin, connects slush pump and sludge drying device by sludge pipe.
In above-described efficient catalytic reaction unit, be provided with the efficient catalytic oxidant that Canadian CIRCUL-AIRE company introduces.
Operation principle: air exhauster work when work on the tube connector of cascade desulfurizing dust-collector and demist dehydrator is constantly extracted into flue gas in cascade desulfurizing dust-collector, first the flue gas of boiler is discharged to cascade desulfurizing dust-collector through chimney, the air distribution plate of the pretreatment unit on cascade desulfurizing dust-collector distributes flue gas uniformly and enters cascade desulfurizing dust-collector inside and start to run into cascade, cascade sponges most dust and sulphur in flue gas, then the flue gas atomization jetting device atomization sulphur removal after cascade again, atomized water absorbs the sulphur in flue gas again, flue gas fully blots the moisture in flue gas after by demist dehydrator, through efficient catalytic reaction unit, efficient catalytic oxidant in efficient catalytic reaction unit absorbs the noxious material in flue gas again fully, discharge standard compliant flue gas finally by crossing smoke exhaust pipe, water replanishing device above cascade is constantly to cascade moisturizing simultaneously, dust on cascade and sulphur are flushed to the bottom of cascade desulfurizing dust-collector through water, the moisture of atomization jetting device absorption dust and sulphur also reaches the bottom of cascade desulfurizing dust-collector, absorb the blow-off pipe that the moisture of dust and sulphur is connected by the sewage draining exit of cascade desulfurizing dust-collector and be discharged to sedimentation basin, after sedimentation basin, arrive flocculation basin, the flocculant feeding device that flocculation basin is provided with overflows to clear water reserviors after starting to add flocculant that desulfurization water is fully flocculated, then again water is supplied with to atomization jetting device and water replanishing device recycles through water pump.
Beneficial effect of the present invention:
1. the present invention adopts cascade desulfurizing dust-collector dust-removal and desulfurizing, the effect that makes dust-removal and desulfurizing significantly, better.
2. in cascade desulfurizing dust-collector of the present invention, be also provided with atomisation device, boiler smoke is subject to after water curtain for dust-collecting desulfurization, be atomized again injection apparatus desulfurization again, finally also be provided with efficient catalytic reaction unit noxious material is absorbed cleanly completely, the flue gas desulfurization of finally discharging is compared with prior art is more fully more effective, purification efficiency is high.
3. the desulfurization water that the present invention produces reuses through after multilayer precipitation, make the process of desulfurization can not produce more than the discharge of desulfurization water.
Accompanying drawing explanation
Accompanying drawing 1 is the workflow schematic diagram of embodiment;
Accompanying drawing 2 is structural representations of the desulfurization part of embodiment;
In figure, identify: 1. boiler, 2. cascade desulfurizing dust-collector, 3. air exhauster, 4. demist dehydrator, 5. efficient catalytic reaction unit, 6. smoke exhaust pipe, 7. tube connector, 21. air distribution plates, 22. water replanishing devices, 23. cascades, 24. atomization jetting devices, 25. blow-off pipes, 26. sewage draining exits.
The specific embodiment
With reference to the accompanying drawings, the specific embodiment of the present invention is further described in detail.
Embodiment 1:
A kind of boiler flue gas treatment system, comprises boiler, efficient catalytic reaction unit 5, demist dehydrator 4, air exhauster 3, settler, slush pump composition, wherein: also include cascade desulfurizing dust-collector 2 and water pump; The chimney of described boiler 1 is connected and is run in cascade desulfurizing dust-collector 2 by tube connector, cascade desulfurizing dust-collector 2 is communicated with demist dehydrator 4 by tube connector again, demist dehydrator 4 export departments connect efficient catalytic reaction unit 5, and efficient catalytic reaction unit 5 export departments connect smoke exhaust pipe 6; On described tube connector, be provided with an air exhauster 3; The bottom of described cascade desulfurizing dust-collector 2 is provided with sewage draining exit 26, and the sewage draining exit 26 of cascade desulfurizing dust-collector 2 connects settler by blow-off pipe 25.
Above-described cascade desulfurizing dust-collector 2 is provided with pretreatment unit, water replanishing device 22, atomization jetting device 24 and cascade 23; Before described pretreatment unit cascade 23, atomization jetting device 24 is located at cascade 23 rears.
Above-described pretreatment unit is provided with air distribution plate 21 and steel wire; On described air distribution plate 21, be provided with uniformly some wind distributing holes.
Above-described settler comprises sedimentation basin, flocculation basin and clear water reserviors, and cascade desulfurizing dust-collector 2 is connected to sedimentation basin by blow-off pipe 25, and water pump is located in clear water reserviors, and water pump connects atomization jetting device 24 and water replanishing device 22.
Above-described sedimentation basin can be made as the sedimentation basin of multiple series connection.
Above-described flocculation basin is provided with flocculant feeding device.
The above-described slush pump that is provided with bottom sedimentation basin, connects slush pump and sludge drying device by sludge pipe.
Above-described embodiment, is more preferably one of concrete mode of the present invention, and the common variation that those skilled in the art carry out within the scope of technical solution of the present invention and replacement all should be included in protection scope of the present invention.
Claims (8)
1. a boiler flue gas treatment system, comprises boiler (1), efficient catalytic reaction unit (5), demist dehydrator (4), air exhauster (3), settler, slush pump composition, it is characterized in that: also include cascade desulfurizing dust-collector (2) and water pump; Described boiler (1), cascade desulfurizing dust-collector (2), demist dehydrator (4), efficient catalytic reaction unit (5) and smoke exhaust pipe (6) are connected successively with tube connector (7); The tube connector (7) that described cascade desulfurizing dust-collector (2) is connected with demist dehydrator (4) is provided with an air exhauster (4); The bottom of described cascade desulfurizing dust-collector (2) is provided with sewage draining exit (26), and the sewage draining exit (26) of cascade desulfurizing dust-collector (2) connects settler by blow-off pipe (25).
2. boiler flue gas treatment system according to claim 1, is characterized in that: described cascade desulfurizing dust-collector (2) is provided with pretreatment unit, water replanishing device (22), atomization jetting device (24) and cascade (23); Described pretreatment unit cascade (23) is front, and atomization jetting device (24) is located at cascade (23) rear.
3. boiler flue gas treatment system according to claim 1, is characterized in that: described pretreatment unit is provided with air distribution plate (21) and steel wire; On described air distribution plate (21), be provided with uniformly some wind distributing holes.
4. boiler flue gas treatment system according to claim 1, it is characterized in that: described settler comprises sedimentation basin, flocculation basin and clear water reserviors, cascade desulfurizing dust-collector (2) is connected to sedimentation basin by blow-off pipe (25), water pump is located in clear water reserviors, and water pump connects atomization jetting device (24) and water replanishing device (22).
5. boiler flue gas treatment system according to claim 4, is characterized in that: described sedimentation basin can be made as the sedimentation basin of multiple series connection.
6. boiler flue gas treatment system according to claim 4, is characterized in that: described flocculation basin is provided with flocculant feeding device.
7. boiler flue gas treatment system according to claim 4, is characterized in that: described is provided with slush pump in sedimentation basin bottom, by sludge pipe, slush pump and sludge drying device is connected.
8. boiler flue gas treatment system according to claim 1, is characterized in that: in described efficient catalytic reaction unit (5), be provided with the efficient catalytic oxidant that Canadian CIRCUL-AIRE company introduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310701315.4A CN103791510A (en) | 2013-12-18 | 2013-12-18 | Boiler flue gas treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310701315.4A CN103791510A (en) | 2013-12-18 | 2013-12-18 | Boiler flue gas treatment system |
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| Publication Number | Publication Date |
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| CN103791510A true CN103791510A (en) | 2014-05-14 |
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| CN201310701315.4A Pending CN103791510A (en) | 2013-12-18 | 2013-12-18 | Boiler flue gas treatment system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990095A (en) * | 2015-07-30 | 2015-10-21 | 河南龙丰实业股份有限公司 | Improved multi-impurity flue impurity-removing device |
| CN104998527A (en) * | 2015-08-05 | 2015-10-28 | 上海桥宏机械制造有限公司 | Exhaust gas and waste water treatment system for fire resistance test |
| CN105664638A (en) * | 2016-03-07 | 2016-06-15 | 林养高 | Flue gas purifying method |
| CN107126829A (en) * | 2017-06-27 | 2017-09-05 | 南京常荣声学股份有限公司 | Zero discharge and the method and device of flue gas cool-down water saving before wet desulfuration tower |
| CN110013715A (en) * | 2019-03-12 | 2019-07-16 | 蔡军辉 | Shoes Factory pollutant process environmental protection equipment and its application method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177125A (en) * | 1982-04-12 | 1983-10-17 | Nissan Motor Co Ltd | Purification of exhaust gas |
| CN2243935Y (en) * | 1996-01-12 | 1997-01-01 | 刘飞 | Integrated device for water curtain dust removing and desulfurization |
| CN201529485U (en) * | 2009-10-15 | 2010-07-21 | 上海闵欣环保设备工程公司 | Dust-removing and desulfuration device for coal firing boiler |
| CN201840979U (en) * | 2010-11-08 | 2011-05-25 | 深圳市翔宇环保科技有限公司 | Smoke gas comprehensive treatment system |
-
2013
- 2013-12-18 CN CN201310701315.4A patent/CN103791510A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58177125A (en) * | 1982-04-12 | 1983-10-17 | Nissan Motor Co Ltd | Purification of exhaust gas |
| CN2243935Y (en) * | 1996-01-12 | 1997-01-01 | 刘飞 | Integrated device for water curtain dust removing and desulfurization |
| CN201529485U (en) * | 2009-10-15 | 2010-07-21 | 上海闵欣环保设备工程公司 | Dust-removing and desulfuration device for coal firing boiler |
| CN201840979U (en) * | 2010-11-08 | 2011-05-25 | 深圳市翔宇环保科技有限公司 | Smoke gas comprehensive treatment system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990095A (en) * | 2015-07-30 | 2015-10-21 | 河南龙丰实业股份有限公司 | Improved multi-impurity flue impurity-removing device |
| CN104998527A (en) * | 2015-08-05 | 2015-10-28 | 上海桥宏机械制造有限公司 | Exhaust gas and waste water treatment system for fire resistance test |
| CN105664638A (en) * | 2016-03-07 | 2016-06-15 | 林养高 | Flue gas purifying method |
| CN107126829A (en) * | 2017-06-27 | 2017-09-05 | 南京常荣声学股份有限公司 | Zero discharge and the method and device of flue gas cool-down water saving before wet desulfuration tower |
| CN110013715A (en) * | 2019-03-12 | 2019-07-16 | 蔡军辉 | Shoes Factory pollutant process environmental protection equipment and its application method |
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Application publication date: 20140514 |