CN202315634U - Dry-type high-efficiency and energy-saving purification system for multi-pollutant smoke - Google Patents

Dry-type high-efficiency and energy-saving purification system for multi-pollutant smoke Download PDF

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Publication number
CN202315634U
CN202315634U CN2011205116307U CN201120511630U CN202315634U CN 202315634 U CN202315634 U CN 202315634U CN 2011205116307 U CN2011205116307 U CN 2011205116307U CN 201120511630 U CN201120511630 U CN 201120511630U CN 202315634 U CN202315634 U CN 202315634U
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China
Prior art keywords
energy
deduster
flue gas
purification
pollutant
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CN2011205116307U
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Chinese (zh)
Inventor
唐小健
王强
赵培超
熊志成
杨斌懿
谢兴旺
杜云贵
张金伦
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CPI Yuanda Environmental Protection Engineering Co Ltd
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CPI Yuanda Environmental Protection Engineering Co Ltd
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Priority to CN2011205116307U priority Critical patent/CN202315634U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The utility model discloses a dry-type high-efficiency and energy-saving purification system for multi-pollutant smoke. The purification system comprises a pre-denitration device, an air preheater, a pre-dust remover, an activated coke smoke purification device, an afterheat recycling device, a dust remover and a smoke exhaust device, wherein a draught fan is arranged between the dust remover and the afterheat recycling device or between the dust remover and the smoke exhaust device. The dry-type high-efficiency and energy-saving purification system has the characteristics of dust removal, desulfuration, denitration, demercuration and afterheat recycling, and is particularly suitable for multi-pollutant smoke purification and afterheat recycling of medium- and low- sulphur coal for combustion; and when all or part of the pre-dust remover, the activated coke smoke purification device, the afterheat recycling device and the dust remover form an integrated device, a device structural member is reduced, the purification flow is simplified, and the system resistance is reduced, so that the whole system occupies a small area and has small investment and low running energy consumption.

Description

The energy-efficient multi-pollutant flue gas purification system of dry type
Technical field
The utility model belongs to the flue gases purification field, is specifically related to the energy-efficient multi-pollutant flue gas purification system of a kind of dry type.
Background technology
Existing multi-pollutant flue gas purification system; Generally form by preparatory denitrification apparatus, air preheater, pre-duster, activated coke smoke eliminator, deduster, air-introduced machine and fume extractor; Wherein the activated coke smoke eliminator is the reactor that activated coke or active carbon are housed, and activated coke or active carbon be adsorbable to remove multiple pollutants such as sulphur in the flue gas, nitre, mercury.The former flue gas that purifies removes part NOx through preparatory denitrification apparatus; Air preheater reduces flue-gas temperature heating flame air; Pre-duster is removed in the flue gas behind the most dust; Remove multiple pollutant in the flue gas (sulphur, nitre, mercury, moisture content etc.) through the activated coke smoke eliminator, remove the fine dusts in the flue gas through deduster again, flue gas after being purified enters atmosphere through fume extractor under the effect of air-introduced machine.
The deficiency that existing multi-pollutant flue gas purification system exists is: fume afterheat is not recycled; Operation energy consumption is high; And do not carry out effective energy-saving between each device and consider and the optimization of gas cleaning flow arrangement that floor space is big, investment and operating cost are high.
Summary of the invention
In view of this; The utility model provides a kind of dry type energy-efficient multi-pollutant flue gas purification system; Can be simultaneously with flue gas ash removal, desulfurization, denitration, demercuration, dehydration and waste heat recovery, the multi-pollutant gas cleaning and the waste heat recovery of low-sulfur coal in being specially adapted to use.
The energy-efficient multi-pollutant flue gas purification system of the dry type of the utility model; Comprise the preparatory denitrification apparatus, air preheater, pre-duster, activated coke smoke eliminator, waste-heat recovery device, deduster and the fume extractor that are communicated with successively, be provided with air-introduced machine between said deduster and the waste-heat recovery device or between deduster and the fume extractor.
Further, said pre-duster, activated coke smoke eliminator, waste-heat recovery device and deduster are independent device and are communicated with successively through flue;
Further, in said pre-duster, activated coke smoke eliminator, waste-heat recovery device and the deduster adjacent two, three or four devices are communicated with as a whole and entire arrangement in flue;
Further, said preparatory denitrification apparatus is a kind of device or the combination of two or more devices in low nitrogen burning denitrification apparatus, SNCR denitrification apparatus and the SCR denitrification apparatus;
Further, said deduster is electrostatic precipitator or sack cleaner;
Further, said fume extractor is chimney or circulating water cooling tower.
The beneficial effect of the utility model is:
1) the utility model has the characteristic of dedusting, desulfurization, denitration, demercuration and waste heat recovery simultaneously; The multi-pollutant gas cleaning and the waste heat recovery of low-sulfur coal in being specially adapted to use; The high energy consumption of conventional flue gas dedusting, desulfurization, denitration, demercuration, high operating cost have been remedied; Particularly avoided the most frequently used limestone-gypsum wet desulphurization to be prone to the gypsum rain that produces, reduced secondary pollution, the security and the stability of system's operation are improved greatly;
2) in the utility model; All or part of being integrally formed of pre-duster, activated coke smoke eliminator, waste-heat recovery device and deduster disguised when putting; Also reduced bulking block; Shortened purification process, reduced SR, made that the whole system floor space is little, investment is little, operation energy consumption is low.
Description of drawings
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done further to describe in detail below, wherein:
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Below will be with reference to accompanying drawing, the preferred embodiment of the utility model is carried out detailed description.
Fig. 1 is the structural representation of the utility model; As shown in the figure; The energy-efficient multi-pollutant flue gas purification system of the dry type of the utility model; Comprise the preparatory denitrification apparatus 1, air preheater 2, pre-duster 3, activated coke smoke eliminator 4, waste-heat recovery device 5, deduster 6 and the fume extractor 8 that are communicated with successively, be provided with air-introduced machine 7 between said deduster 6 and the fume extractor 8; Former flue gas G1 removes part NOx through preparatory denitrification apparatus 1 successively, and air preheater 2 reduces flue-gas temperature heating flame air, and pre-duster 3 is removed in the flue gas behind the most dust, removes multiple pollutant (SOx, H in the flue gas through activated coke smoke eliminator 4 2S, NOx, heavy metal Hg, steam etc.); Drop to flue-gas temperature more than the flue gas acid dew point temperature through waste-heat recovery device 5 again and consider that the uniform temperature surplus (utilizes waste heat recovery to other system of factory; Like heating boiler feedwater, heating cold wind, heat supply etc.); After deduster 6 removes the fine dusts in the flue gas, reach the clean flue gas G2 that satisfies behind the emission request and overcome SR by air-introduced machine 7 and enter atmosphere through fume extractor 8.Certainly, also can air-introduced machine 7 be arranged between deduster 6 and the waste-heat recovery device 5 according to deployment scenarios.
In the present embodiment; Denitrification apparatus 1 is accomplished denitrations jointly with activated coke smoke eliminator 4 in advance; Pre-duster 3 and deduster 6 common completion dedustings; Waste-heat recovery device 5 recovery waste heats, activated coke smoke eliminator 4 can also remove sulphur in the flue gas, mercury etc., so the utility model has the characteristic of dedusting, desulfurization, denitration, demercuration and waste heat recovery simultaneously; Former flue gas is through after the purified treatment of the utility model, the comprehensive removal efficiency of dust >=99.8%, SOx removal efficiency >=95%, NOx removal efficiency >=80%, heavy metal Hg removal efficiency >=80%, and waste heat recovery utilizes again, not consume water.
In the present embodiment, said pre-duster 3, activated coke smoke eliminator 4, waste-heat recovery device 5 and deduster 6 are independent device and are communicated with successively through flue 9.
In the present embodiment, said preparatory denitrification apparatus 1 is a kind of device or the combination of two or more devices in low nitrogen burning denitrification apparatus, SNCR denitrification apparatus and the SCR denitrification apparatus.
In the present embodiment, said deduster 6 is electrostatic precipitator or sack cleaner.
In the present embodiment, said fume extractor 8 is chimney or circulating water cooling tower.
As the further improvement of the utility model, in said pre-duster 3, activated coke smoke eliminator 4, waste-heat recovery device 5 and the deduster 6 adjacent two, three or four devices are communicated with as a whole and entire arrangement in flue; Pre-duster 3, activated coke smoke eliminator 4, waste-heat recovery device 5 and deduster 6 all or part of is integrally formed makeup and puts; Can reduce bulking block; Shorten purification process, reduce SR, make that the whole system floor space is little, investment is little, operation energy consumption is low.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although the preferred embodiment through with reference to the utility model is described the utility model; But those of ordinary skill in the art should be appreciated that and can make various changes to it in form with on the details, and the spirit and the scope of the utility model that does not depart from appended claims and limited.

Claims (6)

1. energy-efficient multi-pollutant flue gas purification system of dry type; It is characterized in that: comprise the preparatory denitrification apparatus (1), air preheater (2), pre-duster (3), activated coke smoke eliminator (4), waste-heat recovery device (5), deduster (6) and the fume extractor (8) that are communicated with successively, be provided with air-introduced machine (7) between said deduster (6) and the waste-heat recovery device (5) or between deduster (6) and the fume extractor (8).
2. the energy-efficient multi-pollutant flue gas purification system of dry type according to claim 1 is characterized in that: said pre-duster (3), activated coke smoke eliminator (4), waste-heat recovery device (5) and deduster (6) are independent device and are communicated with successively through flue (9).
3. the energy-efficient multi-pollutant flue gas purification system of dry type according to claim 1 is characterized in that: in said pre-duster (3), activated coke smoke eliminator (4), waste-heat recovery device (5) and the deduster (6) adjacent two, three or four devices are communicated with as a whole and entire arrangement in flue.
4. according to claim 1, the energy-efficient multi-pollutant flue gas purification system of 2 or 3 described dry types, it is characterized in that: said preparatory denitrification apparatus (1) is a kind of device in low nitrogen burning denitrification apparatus, SNCR denitrification apparatus and the SCR denitrification apparatus or the combination of two or more devices.
5. according to claim 1, the energy-efficient multi-pollutant flue gas purification system of 2 or 3 described dry types, it is characterized in that: said deduster (6) is electrostatic precipitator or sack cleaner.
6. according to claim 1, the energy-efficient multi-pollutant flue gas purification system of 2 or 3 described dry types, it is characterized in that: said fume extractor (8) is chimney or circulating water cooling tower.
CN2011205116307U 2011-12-09 2011-12-09 Dry-type high-efficiency and energy-saving purification system for multi-pollutant smoke Expired - Lifetime CN202315634U (en)

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CN2011205116307U CN202315634U (en) 2011-12-09 2011-12-09 Dry-type high-efficiency and energy-saving purification system for multi-pollutant smoke

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CN2011205116307U CN202315634U (en) 2011-12-09 2011-12-09 Dry-type high-efficiency and energy-saving purification system for multi-pollutant smoke

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102489109A (en) * 2011-12-09 2012-06-13 中电投远达环保工程有限公司 Dry-type efficient and energy saving system for cleaning flue gas of multi-pollutants
CN103691259A (en) * 2013-12-11 2014-04-02 北京中能诺泰节能环保技术有限责任公司 Energy-saving and water-saving purification system for processing smoke by using wet process and energy-saving and water-saving purification process
CN107469593A (en) * 2017-08-28 2017-12-15 中国天辰工程有限公司 Emission-control equipment and method during a kind of sial phosphorus molecular sieve drying and roasting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102489109A (en) * 2011-12-09 2012-06-13 中电投远达环保工程有限公司 Dry-type efficient and energy saving system for cleaning flue gas of multi-pollutants
CN103691259A (en) * 2013-12-11 2014-04-02 北京中能诺泰节能环保技术有限责任公司 Energy-saving and water-saving purification system for processing smoke by using wet process and energy-saving and water-saving purification process
CN107469593A (en) * 2017-08-28 2017-12-15 中国天辰工程有限公司 Emission-control equipment and method during a kind of sial phosphorus molecular sieve drying and roasting
CN107469593B (en) * 2017-08-28 2020-10-27 中国天辰工程有限公司 Device and method for treating waste gas in drying and roasting process of silicon-aluminum-phosphorus molecular sieve

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Granted publication date: 20120711