CN103785255A - Efficient fuel gas treatment system for boiler - Google Patents

Efficient fuel gas treatment system for boiler Download PDF

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Publication number
CN103785255A
CN103785255A CN201310701640.0A CN201310701640A CN103785255A CN 103785255 A CN103785255 A CN 103785255A CN 201310701640 A CN201310701640 A CN 201310701640A CN 103785255 A CN103785255 A CN 103785255A
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CN
China
Prior art keywords
cascade
efficient
collector
boiler
desulfurizing dust
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CN201310701640.0A
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Chinese (zh)
Inventor
林天祥
杨艳颖
花勇功
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广西高中阀门制造有限责任公司
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Priority to CN201310701640.0A priority Critical patent/CN103785255A/en
Publication of CN103785255A publication Critical patent/CN103785255A/en

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Abstract

The invention discloses an efficient fuel gas treatment system for a boiler. The efficient fuel gas treatment system for the boiler comprises the boiler, an efficient catalytic reaction device, a demist dehydrator, an exhaust fan, a precipitation device and a slurry pump, and also comprises a water screen desulfuration dust collector, a water pump and a heat exchanger, wherein the boiler, the heat exchanger, the water screen desulfuration dust collector, the demist dehydrator, the efficient catalytic reaction device and a smoke vent are sequentially connected through a connecting pipe. The efficient fuel gas treatment system for the boiler is suitable for being widely applied to the treatment field of various tail gases. The efficient fuel gas treatment system has the advantages of being strong in adsorptivity, high in purification efficiency and wastewater utilization ratio, long in service life and the like.

Description

A kind of efficient boiler smoke processing system

Technical field

The invention belongs to tail gas desulfur technology field, relate to a kind of efficient boiler smoke processing 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 efficient boiler smoke processing system that water reuse rate is higher.

To achieve these goals, the present invention has adopted following technical scheme:

A kind of efficient boiler smoke processing system, comprises boiler, efficient catalytic reaction unit, demist dehydrator, air exhauster, settler, slush pump composition, wherein: also include cascade desulfurizing dust-collector, water pump and heat exchanger; Described boiler, heat exchanger, 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 arrives heat exchanger through chimney, the heat of heat exchanger absorption boiler tail cigarette, then provide clean heat from heating tube to the place that needs heat supply, flue gas arrives cascade desulfurizing dust-collector after heat exchanger, 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 present invention connects a heat exchanger at boiler, can make full use of the heat that boiler produces, and reaches energy-conserving and environment-protective.

4. the invention enables the desulfurization water that boiler produces to reuse 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. heat exchanger, 4. air exhauster, 5. demist dehydrator, 6. efficient catalytic reaction unit, 7. smoke exhaust pipe, 8. tube connector, 21. air distribution plates, 22. water replanishing devices, 23. cascades, 24. atomization jetting devices, 25. blow-off pipes, 26. sewage draining exits, 30. heating tubes.

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 efficient boiler smoke processing system, also includes cascade desulfurizing dust-collector 2, water pump and heat exchanger 3; Described boiler 1, heat exchanger 3, cascade desulfurizing dust-collector 2, demist dehydrator 5, efficient catalytic reaction unit 6 and smoke exhaust pipe 7 use tube connectors 8 are connected successively; The tube connector 8 that described cascade desulfurizing dust-collector 2 is connected with demist dehydrator 5 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.

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. an efficient boiler smoke processing system, comprise boiler (1), efficient catalytic reaction unit (6), demist dehydrator (5), air exhauster (4), settler, slush pump composition, it is characterized in that: also include cascade desulfurizing dust-collector (2), water pump and heat exchanger (3); Described boiler (1), heat exchanger (3), cascade desulfurizing dust-collector (2), demist dehydrator (5), efficient catalytic reaction unit (6) and smoke exhaust pipe (7) are connected successively with tube connector (8); The tube connector (8) that described cascade desulfurizing dust-collector (2) is connected with demist dehydrator (5) 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. efficient boiler smoke processing 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. efficient boiler smoke processing 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. efficient boiler smoke processing 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. efficient boiler smoke processing system according to claim 4, is characterized in that: described sedimentation basin can be made as the sedimentation basin of multiple series connection.
6. efficient boiler smoke processing system according to claim 4, is characterized in that: described flocculation basin is provided with flocculant feeding device.
7. efficient boiler smoke processing 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. efficient boiler smoke processing system according to claim 1, is characterized in that: in described efficient catalytic reaction unit (6), be provided with the efficient catalytic oxidant that Canadian CIRCUL-AIRE company introduces.
CN201310701640.0A 2013-12-18 2013-12-18 Efficient fuel gas treatment system for boiler CN103785255A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105214489A (en) * 2015-11-14 2016-01-06 华玉叶 A kind of domestic briquet stove flue gas purifying method
CN105214492A (en) * 2015-11-14 2016-01-06 华玉叶 A kind of domestic briquet stove flue gas purifying method
CN105233679A (en) * 2015-11-14 2016-01-13 华玉叶 Method for purifying flue gas of domestic coal stove
CN105251358A (en) * 2015-11-14 2016-01-20 华玉叶 Domestic coal stove flue gas purifying method
CN105251357A (en) * 2015-11-14 2016-01-20 华玉叶 Domestic coal stove flue gas purifying method
CN105251348A (en) * 2015-11-14 2016-01-20 华玉叶 Domestic coal stove flue gas purifying method
CN105289155A (en) * 2015-11-14 2016-02-03 华玉叶 Method for purifying household coal stove flue gas
CN105327618A (en) * 2015-12-03 2016-02-17 华玉叶 Household coal stove flue gas purification method
CN105457412A (en) * 2015-11-14 2016-04-06 华玉叶 Household stove flue gas purification method
CN105597523A (en) * 2015-11-14 2016-05-25 华玉叶 Household coal stove flue gas purification method
CN105597522A (en) * 2015-11-14 2016-05-25 华玉叶 Household coal stove flue gas purification method
CN105597525A (en) * 2015-11-14 2016-05-25 华玉叶 Household coal stove flue gas purification method
CN107511069A (en) * 2017-09-22 2017-12-26 苏州仁益生物科技有限公司 A kind of efficient energy-saving emission-control equipment

Citations (4)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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 (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105214489A (en) * 2015-11-14 2016-01-06 华玉叶 A kind of domestic briquet stove flue gas purifying method
CN105214492A (en) * 2015-11-14 2016-01-06 华玉叶 A kind of domestic briquet stove flue gas purifying method
CN105233679A (en) * 2015-11-14 2016-01-13 华玉叶 Method for purifying flue gas of domestic coal stove
CN105251358A (en) * 2015-11-14 2016-01-20 华玉叶 Domestic coal stove flue gas purifying method
CN105251357A (en) * 2015-11-14 2016-01-20 华玉叶 Domestic coal stove flue gas purifying method
CN105251348A (en) * 2015-11-14 2016-01-20 华玉叶 Domestic coal stove flue gas purifying method
CN105289155A (en) * 2015-11-14 2016-02-03 华玉叶 Method for purifying household coal stove flue gas
CN105597525A (en) * 2015-11-14 2016-05-25 华玉叶 Household coal stove flue gas purification method
CN105457412A (en) * 2015-11-14 2016-04-06 华玉叶 Household stove flue gas purification method
CN105597523A (en) * 2015-11-14 2016-05-25 华玉叶 Household coal stove flue gas purification method
CN105597522A (en) * 2015-11-14 2016-05-25 华玉叶 Household coal stove flue gas purification method
CN105327618A (en) * 2015-12-03 2016-02-17 华玉叶 Household coal stove flue gas purification method
CN107511069A (en) * 2017-09-22 2017-12-26 苏州仁益生物科技有限公司 A kind of efficient energy-saving emission-control equipment

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Application publication date: 20140514