CN103301704A - PM2.5 dust removal device for flue gas - Google Patents
PM2.5 dust removal device for flue gas Download PDFInfo
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- CN103301704A CN103301704A CN 201210058779 CN201210058779A CN103301704A CN 103301704 A CN103301704 A CN 103301704A CN 201210058779 CN201210058779 CN 201210058779 CN 201210058779 A CN201210058779 A CN 201210058779A CN 103301704 A CN103301704 A CN 103301704A
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- flue gas
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Abstract
The invention provides a PM2.5 dust removal device for flue gas. According to the invention, a plurality of cloud washing chambers are connected at the rear of a washing tower, and a plurality of spray nozzles are arranged in the chambers and are connected with compressed pumps with water supply pipes and water return pipes. The device can be used for treating harmful substances of the flue gas during a combustion process of fossil fuels, can treat discharges with a mass loading between 5-2000 mg/m<3>, and overcomes problems the present dust removal devices are low in dust collection efficiency for PM2.5 fine dust in the flue gas, high in cost, large in power consumption and secondary pollution. The device can effectively remove sulfur dioxide, nitrogen oxide, silica, metal oxide, heavy metal, ammonium salt particle and hydrocarbon in the flue gas, as well as carbonyl sulfide in garbage combustion, etc., and has characteristics of an efficiency being higher than 99.7 %, low investment, low operation and maintenance costs, good dust removal effect, etc. Due to openness of the system, chemical agents can be added into water for desulfurization and denitrification.
Description
Technical field
The present invention relates to the device that a kind of exhaust gas dust that fossil fuel is produced is handled in burning, specifically PM2.5 dust arrester in a kind of flue gas.
Background technology
Fossil fuel is in combustion process, contain a large amount of fine harmful dusts in the flue gas that produces, directly be discharged in the air, respiratory system that can harmful to human and cardiovascular etc. healthy, directly strengthen the incidence of disease of cancer, cause atmosphere pollution and destroy ecological environment, little fine harmful of PM2.5 particle diameter in the flue gas particularly, noxious material, can be in the medium-term and long-term stop of atmosphere, bigger to health and atmosphere environment impact, electric cleaner and sack cleaner that prior art is handled PM2.5 fine dust in the flue gas, its practical application effect is all undesirable, particularly can't really reduce pump, arsenic, fine mashed discharging of heavy metals such as selenium.
Summary of the invention
The object of the present invention is to provide PM2.5 dust arrester in a kind of flue gas, can wash by prerinse and several grades of clouds, and by sewage disposal and water compression pump circular treatment, make flue gas become clean air and directly discharge.
The present invention includes compression water pump and demister in the dust arrester, the technical scheme that adopts is: described dust arrester is to be serially connected with the cloud washing chamber that several have supply unit and electric field grid at a rear side that has the scrubbing tower of smoke inlet by flue, its last cloud washing chamber is provided with exhanst gas outlet, in scrubbing tower and several cloud washing chambers that connect that contact a plurality of fog-spray nozzles is installed all.
Technique scheme also comprises: a plurality of water nozzles of installing are connected with the compression water pump by water supply line, are provided with below scrubbing tower and several cloud washing chambers and compress the water return pipeline that water pump communicates.
Described electric field grid are connected with supply unit and communicate, and the electric field grid are installed in the spout place of fog-spray nozzle.
Scrubbing tower and several cloud washing chambers are positioned at the foundation of civil work top, and the compression water pump that communicates with it is arranged in the foundation of civil work.
At smoke outlet demister is installed.
Be provided with the water pond in below scrubbing tower and several cloud washing chambers, its water return outlet of water return pipeline that communicates with the compression water pump is positioned at the top in water pond.
A plurality of water nozzles in the scrubbing tower arrange by number row mode, constitute the structure of multi-stage spray washing thus.
A plurality of water nozzles in the scrubbing tower and flue gas enter and constitute reverse spray pattern setting.
The present invention passes through technique scheme, owing to being set to multistage reverse water spray structure in the scrubbing tower that flue gas is entered, after the flue gas that contains various deleterious particles enters, the spraying of fog-spray nozzle adverse current can fall into bulky grain wherein the water pond of below with spray water, the flue gas water nozzle in several cloud washing chambers is again sprayed, in the cloud washing chamber, produce high concentration and have the water droplet of positive electricity through the electric field grid in addition, make it in the flue gas subparticle can fully mix, allow each water droplet all form a particle collector and fall into the below the water pond, not falling into the positively charged flue gas stream in water pond and a large amount of electronegative drops of secondary cloud chamber attracts each other and collides, a snowslide phenomenon appears, it is big that drop becomes, become heavy, condense into water droplet and fall into the water pond, flue gas can become the air of cleaning from the outlet discharging through multiprocessing, thus can be efficient, fast harmful substance in the flue gas is handled, its dedusting is efficient to be reached more than 99.7%, and small investment, operation and maintenance cost is extremely low, it is a kind of low power consuming, the few input and high efficiency popularization dedusting technology can extensively be generalized in each related industry and use.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing is structural representation of the present invention.
Among the figure: 1, scrubbing tower, 2, the cloud washing chamber, 3, flue, 4, smoke inlet, 5, exhanst gas outlet, 6, compression water pump, 7, water supply line, 8, water return pipeline, 9, fog-spray nozzle, 10, supply unit, 11, demister, 12, the water pond, 13, foundation of civil work, 14 electric field grid.
The specific embodiment
Shown in the accompanying drawing embodiment: dust arrester is to be serially connected with the cloud washing chamber 2 that several have supply unit 10 and electric field grid 14 at a rear side that has the scrubbing tower 1 of smoke inlet 4 by flue 3, its last cloud washing chamber 2 is provided with exhanst gas outlet 5, in scrubbing tower 1 and several cloud washing chambers 2 that connect that contact a plurality of fog-spray nozzles 9 is installed all.A plurality of water nozzles 9 of installing are connected with compression water pump 6 by water supply line 7, are provided with below scrubbing tower 1 and several cloud washing chambers 2 and compress the water return pipeline 8 that water pump 6 communicates.Electric field grid 14 are connected with supply unit 10 and communicate, and electric field grid 14 are installed in the spout place of fog-spray nozzle 9.Scrubbing tower 1 and several cloud washing chambers 2 are positioned at foundation of civil work 13 tops, and the compression water pump 6 that communicates with it is arranged in the foundation of civil work 13.5 places are equipped with demister 11 at exhanst gas outlet.Be provided with water pond 12 in below scrubbing tower 1 and several cloud washing chambers 2, water return pipeline 8 its water return outlets that communicate with compression water pump 6 are positioned at the top in water pond 12.A plurality of water nozzles 9 in the scrubbing tower 1 arrange by number row mode, constitute the structure of multi-stage spray washing thus.A plurality of water nozzles 9 in the scrubbing tower 1 enter with flue gas and constitute reverse spray pattern setting.
During concrete enforcement, scrubbing tower 1 can be constructed to cuboid or cylindrical structure, the flue gas that contains various subparticles during use enters in the scrubbing tower 1 by entrance 4, compression water pump 6 is reduced to fog-spray nozzle 9 through water supply line 7 with hydraulic pressure, fog-spray nozzle 9 adverse currents sprayings flue gas, wherein the oarse-grained particle water that gets off of being sprayed is collected, further by 6 recyclings of compression water pump, water is recycled to again that compression water pump 6 is recycling handles silt simultaneously, and meticulous and ultra-fine grain can not be collected.Because the spraying of water, flue gas is cooled, a large amount of aqueous vapor evaporations, make smoke moisture saturated even supersaturation occur, so various tiny particles, comprising: more than one percent microns ultra-fine grain all increases several microns sizes at zero point at supersaturated vapor, agglomeration effect namely occurs.Becoming easier removes out.Enter cloud washing chamber 2 through flue 3 flue gases subsequently, the electric field grid 14 that connect by supply unit 10 produce the positively charged water droplet of high concentrations.And then a large amount of positively charged drops rapidly and in the flue gas in a large number subparticles fully mix, subparticle and drop attract each other by positive charge and collide, a large amount of subparticles are drawn in each drop, each water droplet becomes a particle collector, the big drop of part falls into the water in water pond 12, and by sewage by water return pipeline 8 and the compression water pump 6 recycling silts of handling simultaneously.Become clean air to flue gas here, directly discharge through exhanst gas outlet 5 by demister 11 back again.
Claims (8)
1. PM2.5 dust arrester in the flue gas, comprise compression water pump (6) and demister (11) in the dust arrester, it is characterized in that: described dust arrester is to be serially connected with the cloud washing chamber (2) that several have supply unit (10) and electric field grid (14) at a rear side that has the scrubbing tower (1) of smoke inlet (4) by flue (3), its last cloud washing chamber (2) is provided with exhanst gas outlet (5), in scrubbing tower (1) and several cloud washing chambers (2) that connect that contact a plurality of fog-spray nozzles (9) is installed all.
2. PM2.5 dust arrester in the flue gas according to claim 1, it is characterized in that: a plurality of water nozzles (9) of installing are connected with compression water pump (6) by water supply line (7), are provided with in the below of scrubbing tower (1) and several cloud washing chambers (2) and compress the water return pipeline (8) that water pump (6) communicates.
3. PM2.5 dust arrester in the flue gas according to claim 1 and 2 is characterized in that: described electric field grid (14) are connected with supply unit (10) and communicate, and electric field grid (14) are installed in the spout place of fog-spray nozzle (9).
4. PM2.5 dust arrester in the flue gas according to claim 1 and 2 is characterized in that: scrubbing tower (1) and several cloud washing chambers (2) are positioned at foundation of civil work (13) top, and the compression water pump (6) that communicates with it is arranged on the foundation of civil work (13).
5. PM2.5 dust arrester in the flue gas according to claim 1 is characterized in that: locate to be equipped with demister (11) at exhanst gas outlet (5).
6. PM2.5 dust arrester in the flue gas according to claim 1, it is characterized in that: be provided with water pond (12) in the below of scrubbing tower (1) and several cloud washing chambers (2), its water return outlet of water return pipeline (8) that communicates with compression water pump (6) is positioned at the top of water pond (12).
7. PM2.5 dust arrester in the flue gas according to claim 1 is characterized in that: a plurality of water nozzles (9) in the scrubbing tower (1) arrange by number row modes, constitute the structure of multi-stage spray washing thus.
8. PM2.5 dust arrester in the flue gas according to claim 1 is characterized in that: a plurality of water nozzles (9) in the scrubbing tower (1) enter with flue gas and constitute reverse spray pattern setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210058779 CN103301704A (en) | 2012-03-08 | 2012-03-08 | PM2.5 dust removal device for flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210058779 CN103301704A (en) | 2012-03-08 | 2012-03-08 | PM2.5 dust removal device for flue gas |
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| Publication Number | Publication Date |
|---|---|
| CN103301704A true CN103301704A (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210058779 Pending CN103301704A (en) | 2012-03-08 | 2012-03-08 | PM2.5 dust removal device for flue gas |
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| CN (1) | CN103301704A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514899A (en) * | 2016-12-09 | 2017-03-22 | 重庆有为塑胶有限公司 | PVC plastic heating and drying device |
| CN110833736A (en) * | 2019-11-26 | 2020-02-25 | 江西晶昊盐化有限公司 | Parallel pretreatment type two-stage wet dust removal method and application thereof |
-
2012
- 2012-03-08 CN CN 201210058779 patent/CN103301704A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106514899A (en) * | 2016-12-09 | 2017-03-22 | 重庆有为塑胶有限公司 | PVC plastic heating and drying device |
| CN110833736A (en) * | 2019-11-26 | 2020-02-25 | 江西晶昊盐化有限公司 | Parallel pretreatment type two-stage wet dust removal method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Xiangyang Fred Electric Co., Ltd. Document name: Notification of Publication of the Application for Invention |
|
| DD01 | Delivery of document by public notice |
Addressee: Xiangyang Fred Electric Co., Ltd. Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Xiangyang Fred Electric Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130918 |