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 PDFInfo
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- 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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- Prior art keywords
- adsorbent
- ultra
- fine grain
- flue gas
- adding apparatus
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title abstract description 16
- 239000003546 flue gas Substances 0.000 title abstract description 16
- 239000011882 ultra-fine particle Substances 0.000 title abstract 4
- 239000003463 adsorbent Substances 0.000 claims abstract description 39
- 239000000428 dust Substances 0.000 claims abstract description 24
- 230000002776 aggregation Effects 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 239000000376 reactant Substances 0.000 claims abstract description 11
- 238000005054 agglomeration Methods 0.000 claims description 16
- 239000000356 contaminant Substances 0.000 claims description 16
- 239000003245 coal Substances 0.000 claims description 11
- 239000003517 fume Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000003352 sequestering agent Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 150000002894 organic compounds Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 11
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052753 mercury Inorganic materials 0.000 abstract description 10
- 239000003344 environmental pollutant Substances 0.000 abstract description 8
- 231100000719 pollutant Toxicity 0.000 abstract description 8
- 229910052602 gypsum Inorganic materials 0.000 abstract description 6
- 239000010440 gypsum Substances 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000006477 desulfuration reaction Methods 0.000 abstract 2
- 230000023556 desulfurization Effects 0.000 abstract 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract 1
- 238000004220 aggregation Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000219 mutagenic Toxicity 0.000 description 1
- 230000003505 mutagenic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- Treating Waste Gases (AREA)
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
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.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203710855U true CN203710855U (en) | 2014-07-16 |
Family
ID=51150057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320809593.7U Expired - Lifetime CN203710855U (en) | 2013-12-11 | 2013-12-11 | Device for cooperatively removing ultrafine particles and micropollutants in flue gas of coal-fired boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203710855U (en) |
Cited By (1)
| 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 |
-
2013
- 2013-12-11 CN CN201320809593.7U patent/CN203710855U/en not_active Expired - Lifetime
Cited By (1)
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
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 |