CN203710855U - Device for cooperatively removing ultrafine particles and micropollutants in flue gas of coal-fired boiler - Google Patents

Device for cooperatively removing ultrafine particles and micropollutants in flue gas of coal-fired boiler Download PDF

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Publication number
CN203710855U
CN203710855U CN201320809593.7U CN201320809593U CN203710855U CN 203710855 U CN203710855 U CN 203710855U CN 201320809593 U CN201320809593 U CN 201320809593U CN 203710855 U CN203710855 U CN 203710855U
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China
Prior art keywords
adsorbent
ultra
fine grain
flue gas
adding apparatus
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Expired - Lifetime
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CN201320809593.7U
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Chinese (zh)
Inventor
刘惠勇
赵江翔
李丽
么世杰
徐杰英
刘家海
项光明
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BEIJING LONGDIAN HONGTAI ENVIRONMENT TECHNOLOGY CO LTD
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BEIJING LONGDIAN HONGTAI ENVIRONMENT TECHNOLOGY CO LTD
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Priority to CN201320809593.7U priority Critical patent/CN203710855U/en
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Abstract

The utility model relates to a device for cooperatively removing ultrafine particles and micropollutants in flue gas of a coal-fired boiler. According to a technological process, along an airflow direction, an adsorbent pre-spraying device, an ultrafine particle aggregation device, an adsorbent adding device and a cloth bag dust removal device are sequentially arranged in front of a desulfurization device, and a spray cleaning device, a reactant adding device and a wet electric dust removal device are sequentially arranged behind the desulfurization device. The device has a high removing efficiency on PM2.5 ultrafine particles, gypsum rain, heavy metal such as mercury and ultrafine micropollutants such as dioxin, and the device has the advantages of low operation cost and convenience in repair and operating maintenance and is suitable for purifying pollutants in the flue gas of the coal-fired boiler.

Description

The device of a kind of cooperation-removal fire coal boiler fume ultra-fine grain and trace contaminant
Technical field
The utility model relates to a kind of apparatus and method that remove fire coal boiler fume ultra-fine grain and trace contaminant, relates in particular to a kind of cooperation-removal device being made up of the pre-spray equipment of adsorbent, ultra-fine grain agglomeration device, adsorbent adding apparatus, bag-type dust collector, spraying and cleaning apparatus, reactant adding apparatus and Wet type electric dust-removing device.
Background technology
Though coal combustion pollutant removing and the control technology of China have obtained commercial Application widely, fail to play significant control and removal effect for the discharge that heavily endangers pollutant of PM2.5 ultra-fine grain and trace.This type of can be carcinogenic, teratogenesis, mutagenic heavy harm pollutant comprise: the organic pollutions such as heavy metal, bioxin such as the following particle of PM10 (especially PM2.5), mercury.Research and detection show, the ratio that in coal-fired plant flue gas, the following particle of PM2.5 accounts for particle total amount exceedes 80%, once be discharged into the organic pollution formation such as atmosphere , bioxin higher than 50% gaseous mercury and particle mercury, the ratio being captured is lower than 20%.In addition, " gypsum rain " phenomenon being produced by desulfurizer also comparatively generally occurs, and has destroyed local environment, is badly in need of being solved.Heavily endangering removing of pollutant and become gradually the international forward position focus of current basic research and technological development PM2.5 ultra-fine grain and trace.
The utility model adopts the mechanism such as physics and chemistry absorption, particle agglomeration, chelatropic reaction, the ultra-fine and trace contaminants such as heavy metal, bioxin such as cooperation-removal PM2.5 ultra-fine grain, " gypsum rain ", mercury.
Summary of the invention
The purpose of this utility model is to provide the device of a kind of cooperation-removal fire coal boiler fume ultra-fine grain and trace contaminant, is made up of the pre-spray equipment of adsorbent, ultra-fine grain agglomeration device, adsorbent adding apparatus, bag-type dust collector, spraying and cleaning apparatus, reactant adding apparatus and Wet type electric dust-removing device.Adopt and before desulfurizer, be disposed with the pre-spray equipment of adsorbent, ultra-fine grain agglomeration device, adsorbent adding apparatus and bag-type dust collector along airflow direction, after desulfurizer, be disposed with spraying and cleaning apparatus, reactant adding apparatus and Wet type electric dust-removing device.The present invention is high to removal efficiencies ultra-fine and trace contaminant such as heavy metal, bioxin such as PM2.5 ultra-fine grain, " gypsum rain ", mercury, operating cost is low, maintenance and operation maintenance convenient, is applicable to the pollutant purification in fire coal boiler fume.
Bag-type dust collector of the present utility model connects respectively the pre-spray equipment of adsorbent, ultra-fine grain agglomeration device and adsorbent adding apparatus.Before bag-type dust collector puts into operation and during overhaul, the pre-spray equipment of adsorbent sprayed into adsorbent before ultra-fine grain agglomeration device, and after airflow uniform distribution, adsorbent uniform fold is on bag-type dust collector filter bag surface.At bag-type dust collector run duration, the pre-spray equipment of adsorbent is out of service, and adsorbent adding apparatus puts into operation.The adsorbent that the pre-spray equipment of adsorbent sprays into is identical with the adsorbent adding in adsorbent adding apparatus.In bag-type dust collector running, the adsorbent adding by adsorbent adding apparatus continues heavy metal and the bioxin etc. such as PM2.5 ultra-fine grain, mercury of in flue gas, not reuniting or adsorb to play suction-operated, thereby further removes.Uniform fold further adsorbs and filters the PM2.5 ultra-fine grain in flue gas and trace contaminant at the adsorbent on filter bag surface, thereby obtains high-efficient purification effect.
Wet type electric dust-removing device of the present utility model is coupled reaction agent adding apparatus and spraying and cleaning apparatus respectively.Flue gas is after desulfurizer enters Wet type electric dust-removing device, water smoke is sprayed to corona zone and discharge electrode by spraying and cleaning apparatus, water smoke arista electrode form corona field charged after, to heavy metal, bioxin such as PM2.5 ultra-fine grain, " gypsum rain ", mercury etc., ultra-fine and trace contaminant plays trapping effect, is finally collected and rinses in dust collecting electrode.Reactant adding apparatus adds organic sequestering agent in spraying and cleaning apparatus, be injected into Wet type electric dust-removing device with water smoke, contents of many kinds of heavy metal ion generation chelatropic reaction in organic sequestering agent and moisture film, generate stable and water-fast metallo-chelate, thereby the micro heavy pollutant in flue gas is efficiently removed.Clean flue gas after Wet type electric dust-removing device purifies is by smoke stack emission.
Organic sequestering agent of the present utility model is water miscible macromolecular organic compound.
Compared with prior art, the utlity model has following characteristics:
(1) owing to having adopted the mechanism such as physics and chemistry absorption, particle agglomeration, chelatropic reaction, the fire coal boiler fume that contains PM2.5 ultra-fine grain and trace contaminant is through synergistic purification, removal efficiency is high, removes PM2.5 ultra-fine grain in rear clean flue gas and quality and the quantity of trace contaminant and greatly reduces.Adopt the device that removes of the present invention, outlet dust emission≤10mg/Nm3; PM2.5 ultra-fine grain and trace contaminant capture rate >=90%.
(2) in Wet type electric dust-removing device of the present utility model, adopt the chelatropic reaction agent of water miscible macromolecule organic sequestering agent as heavy metal contaminants.
(3) the utlity model has the feature such as maintenance and operation maintenance convenience.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the process flow diagram of the utility model patent.
In figure: 1. the pre-spray equipment of adsorbent, 2. ultra-fine grain agglomeration device, 3. adsorbent adding apparatus, 4. bag-type dust collector, 5. desulfurizer, 6. spraying and cleaning apparatus, 7. Wet type electric dust-removing device, 8. reactant adding apparatus, 9. chimney.
Detailed description of the invention
In Fig. 1 along airflow direction at the front pre-spray equipment of adsorbent (1), ultra-fine grain agglomeration device (2), adsorbent adding apparatus (3) and the bag-type dust collector (4) of being disposed with of desulfurizer (5), after desulfurizer (5), be disposed with spraying and cleaning apparatus (6), reactant adding apparatus (8) and Wet type electric dust-removing device (7).
In the time that cooperation-removal device of the present utility model is in duty, fire coal boiler fume enters ultra-fine grain agglomeration device (2), ultra-fine grain agglomeration device (2) working voltage is in 60kV left and right, the ultra-fine grain such as bulky grain and PM2.5 entering in ultra-fine grain agglomeration device (2) flue gas is formed bulky grain by charged reunion under high voltage electric field effect, enter in follow-up bag-type dust collector (4) with flue gas, improved the removal efficiency of bag-type dust collector to ultra-fine grains such as PM2.5.Before bag-type dust collector (4) puts into operation and during overhaul, the pre-spray equipment of adsorbent (1) sprays into adsorbent before at ultra-fine grain agglomeration device (2), and after airflow uniform distribution, adsorbent uniform fold is on bag-type dust collector (4) filter bag surface.At bag-type dust collector (4) run duration, the pre-spray equipment of adsorbent (1) is out of service, and adsorbent adding apparatus (3) puts into operation.In bag-type dust collector (4) running, the adsorbent adding by adsorbent adding apparatus (3) continues heavy metal and the bioxin etc. such as PM2.5 ultra-fine grain, mercury of in flue gas, not reuniting or adsorb to play suction-operated, thereby further removes.Flue gas enters Wet type electric dust-removing device (7) through desulfurizer (5) subsequently, water smoke is sprayed to corona zone and discharge electrode by spraying and cleaning apparatus (6), water smoke arista electrode form corona field charged after, to heavy metal, bioxin such as PM2.5 ultra-fine grain, " gypsum rain ", mercury etc., ultra-fine and trace contaminant plays trapping effect, is finally collected and rinses in dust collecting electrode.Reactant adding apparatus (8) adds organic sequestering agent in spraying and cleaning apparatus (6), be injected into Wet type electric dust-removing device (7) with water smoke, contents of many kinds of heavy metal ion generation chelatropic reaction in organic sequestering agent and moisture film, generate stable and water-fast metallo-chelate, thereby the micro heavy pollutant in flue gas is efficiently removed.Clean flue gas after Wet type electric dust-removing device (7) purifies is by chimney (9) discharge.
Above are only detailed description of the invention of the present utility model, technical characterictic of the present utility model is not limited thereto, and the variation that any those skilled in the art does in the field of the invention or modification all should be included the scope of the claims of the present utility model in.

Claims (2)

1. the device of a cooperation-removal fire coal boiler fume ultra-fine grain and trace contaminant, by the pre-spray equipment of adsorbent, ultra-fine grain agglomeration device, adsorbent adding apparatus, bag-type dust collector, spraying and cleaning apparatus, reactant adding apparatus and Wet type electric dust-removing device composition, it is characterized in that: before desulfurizer, be disposed with the pre-spray equipment of adsorbent along airflow direction, ultra-fine grain agglomeration device, adsorbent adding apparatus and bag-type dust collector, after desulfurizer, be disposed with spraying and cleaning apparatus, reactant adding apparatus and Wet type electric dust-removing device.
2. the device of a kind of cooperation-removal fire coal boiler fume ultra-fine grain according to claim 1 and trace contaminant, is characterized in that: bag-type dust collector connects respectively the pre-spray equipment of adsorbent, ultra-fine grain agglomeration device and adsorbent adding apparatus.
3. the device of a kind of cooperation-removal fire coal boiler fume ultra-fine grain according to claim 1 and trace contaminant, is characterized in that: Wet type electric dust-removing device is coupled reaction agent adding apparatus and spraying and cleaning apparatus respectively.
4. the device of a kind of cooperation-removal fire coal boiler fume ultra-fine grain according to claim 1 and trace contaminant, is characterized in that: the organic sequestering agent adding in reactant adding apparatus is water miscible macromolecular organic compound.
CN201320809593.7U 2013-12-11 2013-12-11 Device for cooperatively removing ultrafine particles and micropollutants in flue gas of coal-fired boiler Expired - Lifetime CN203710855U (en)

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Application Number Priority Date Filing Date Title
CN201320809593.7U CN203710855U (en) 2013-12-11 2013-12-11 Device for cooperatively removing ultrafine particles and micropollutants in flue gas of coal-fired boiler

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Application Number Priority Date Filing Date Title
CN201320809593.7U CN203710855U (en) 2013-12-11 2013-12-11 Device for cooperatively removing ultrafine particles and micropollutants in flue gas of coal-fired boiler

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103611383A (en) * 2013-12-11 2014-03-05 北京龙电宏泰环保科技有限公司 Device and method for synergetically removing ultrafine particles and micro-pollutants in flue gas of coal-fired boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103611383A (en) * 2013-12-11 2014-03-05 北京龙电宏泰环保科技有限公司 Device and method for synergetically removing ultrafine particles and micro-pollutants in flue gas of coal-fired boiler

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C56 Change in the name or address of the patentee
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Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 116 gladful international center block C No. 1110

Patentee after: BEIJING LONDIAN HONGTAI ENVIRONMENTAL TECHNOLOGY CO.,LTD.

Address before: 100089, No. 87, West Third Ring Road North, Haidian District, 14, 3-1407, Beijing

Patentee before: BEIJING LONDIAN HONGTAI ENVIRONMENTAL TECHNOLOGY CO.,LTD.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20140716