CN103055649A - Dust removal, desulfurization and denitrification device of coal-fired power generation boiler - Google Patents

Dust removal, desulfurization and denitrification device of coal-fired power generation boiler Download PDF

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Publication number
CN103055649A
CN103055649A CN2013100309627A CN201310030962A CN103055649A CN 103055649 A CN103055649 A CN 103055649A CN 2013100309627 A CN2013100309627 A CN 2013100309627A CN 201310030962 A CN201310030962 A CN 201310030962A CN 103055649 A CN103055649 A CN 103055649A
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removal
dust
chamber
spray chamber
desulfurization
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CN2013100309627A
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CN103055649B (en
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张介轩
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BEIJING XUANLUHAI TECHNOLOGY Co Ltd
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BEIJING XUANLUHAI TECHNOLOGY Co Ltd
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Abstract

The invention provides a dust removal, desulfurization and denitrification device of a coal-fired power generation boiler. The dust removal, desulfurization and denitrification device of the coal-fired power generation boiler comprises a static dust remover, a dust removal, desulfurization and denitrification primary spraying chamber, a dust removal, desulfurization and denitrification secondary spraying chamber and a static demisting chamber which are sequentially arranged from front to back and are connected through an exhaust pipeline; the static demisting chamber is internally provided with a corona wire and a dust collection pole plate; an induced draft fan is assembled in the exhaust pipeline of the static demisting chamber; a water tank with a water seal on the bottom surface is arranged below the dust removal, desulfurization and denitrification primary spraying chamber, the dust removal, desulfurization and denitrification secondary spraying chamber and the static demisting chamber; and an aerator is arranged inside the water tank, and is connected with an ozone generator. The dust removal, desulfurization and denitrification device of the coal-fired power generation boiler, provided by the invention, has the advantages of simple structure, low construction and operation cost, and high dust removal, desulfurization and denitrification efficiency. Meanwhile, the desulfurization and the denitrification of smoke can be realized through a strong oxidation function of ozone; and the conventional acid-base neutralization method is eliminated. Not only can the smoke desulfurization and denitrification process be simplified, but also the environmental friendliness problem in the raw material production caused by using lime and ammonia water as raw materials of the desulfurization and denitrification process can be solved.

Description

Coal-fired electric generation furnace dust-removal and desulfurizing denitrification apparatus
Technical field
The present invention relates to fume discharging purifier, be specifically related to a kind of coal-fired electric generation furnace dust-removal and desulfurizing denitrification apparatus.
Background technology
Containing a large amount of flue dust, sulfide and nitrogen oxide in the coal-fired flue-gas, is the primary pollution source that causes environmental pollution.Along with the enhancing of people's environmental consciousness, the purification standard of fume emission is improved rapidly, particularly coal-fired electric generation furnace has been formulated strict standard limit of smog release.At present; the desulphurization denitration of coal-fired electric generation furnace discharging flue gas adopts acid-base neutralization method and catalytic reduction technology more; although its purification efficiency is high; but investment and the operating cost of equipment are large; and; the production of the employed lime of desulfurization and the employed ammoniacal liquor of denitration can produce the waste gas that contains great amount of carbon dioxide, runs in the opposite direction with the original intention of protection of the environment.
Summary of the invention
The object of the invention is to for the problems referred to above, provide a kind of construction and operating cost low, dedusting, desulphurization and denitration efficient are high, avoid simultaneously using lime and ammoniacal liquor as the coal-fired electric generation furnace dust-removal and desulfurizing denitrification apparatus of desulfurizing and denitrifying process raw material.
The technical scheme that realizes above-mentioned purpose is: a kind of coal-fired electric generation furnace dust-removal and desulfurizing denitrification apparatus, it has the electrostatic precipitator that is arranged in order from front to back, dust-removal and desulfurizing denitration one-level spray chamber, the static of dust-removal and desulfurizing denitration secondary spray chamber and in-built electrical hachure and collecting polar plate is except the fog chamber, the air inlet of described electrostatic precipitator is connected with the exhaust opening of coal-fired electric generation furnace, the gas outlet of this electrostatic precipitator is connected by the bottom of deduster discharge duct with described dust-removal and desulfurizing denitration one-level spray chamber, the one-level spray chamber exhaust outlet that is arranged on above the described dust-removal and desulfurizing denitration one-level spray chamber is connected by the bottom of one-level spray chamber discharge duct with described dust-removal and desulfurizing denitration secondary spray chamber, the secondary spray chamber exhaust outlet that is arranged on above the described dust-removal and desulfurizing denitration secondary spray chamber is connected with the bottom of described static except the fog chamber by secondary spray chamber discharge duct, is arranged on described static and is equipped with air-introduced machine except the static demist chamber gas outlet road above the fog chamber; Be provided with below except the fog chamber at described dust-removal and desulfurizing denitration one-level spray chamber, dust-removal and desulfurizing denitration secondary spray chamber and static and consist of dust-removal and desulfurizing denitration one-level spray chamber, dust-removal and desulfurizing denitration secondary spray chamber and static except the water tank of bottom surface, fog chamber water seal, be provided with aeration head in this water tank, this aeration head is connected with the ozone generator that is arranged on water tank outside by the ozone carrier pipe; Be provided with one-level spray chamber spray head in described dust-removal and desulfurizing denitration one-level spray chamber, the one-level spray feed pipe of this one-level spray chamber spray head is connected in the described water tank, and this one-level spray feed pipe is equipped with one-level spray water supply high-pressure hydraulic pump; Be provided with secondary spray chamber spray head in described dust-removal and desulfurizing denitration secondary spray chamber, the secondary spray feed pipe of this secondary spray chamber spray head is connected in the described water tank, and this secondary spray feed pipe is equipped with secondary spray water supply high-pressure hydraulic pump.
Be provided with the uniform flow grid that formed by horizontal at regular intervals gusset in the above-mentioned dust-removal and desulfurizing denitration one-level spray chamber.
Be provided with the sieve plate of horizontal in the above-mentioned dust-removal and desulfurizing denitration secondary spray chamber, be provided with Ball-type packing above the sieve plate at this.
The invention has the beneficial effects as follows:
1, forms the flue-gas dust-removing and desulfurization denitrification apparatus by preposition high-efficiency electrostatic dust remover and dust-removal and desulfurizing denitration one-level spray chamber, dust-removal and desulfurizing denitration secondary spray chamber and rearmounted static except the fog chamber, its device structure is simple, build and operating cost low, dedusting, desulphurization and denitration efficient are high;
2, utilize the desulphurization denitration of the strong oxidative function realization flue gas of ozone, broken away from traditional acid-base neutralization method, flue gas desulfurization and denitration technique was simplified, solved again the raw material production environmental issue of using lime and ammoniacal liquor to bring as the desulfurizing and denitrifying process raw material.
Description of drawings
Accompanying drawing is this coal-fired electric generation furnace dust-removal and desulfurizing denitrification apparatus schematic diagram.
The specific embodiment
By reference to the accompanying drawings the specific embodiment of the present invention is described.
Such as accompanying drawing, this coal-fired electric generation furnace dust-removal and desulfurizing denitrification apparatus has the static of the electrostatic precipitator 1, dust-removal and desulfurizing denitration one-level spray chamber 2, dust-removal and desulfurizing denitration secondary spray chamber 3 and in-built electrical hachure and the collecting polar plate that are arranged in order from front to back except fog chamber 4.Electrostatic precipitator 1 wherein can adopt the disclosed coal-fired power generation boiler electrostatic precipitation of CN2894856Y, this coal-fired power generation boiler electrostatic precipitation adopts software feature quasi-steady dc source as the power supply of dust arrester, by cooperating of horizontal dust storage chamber and grooved pole plate, form efficient electrostatic precipitator, its efficiency of dust collection is up to more than 90%; Static is basic identical except the structure of the structure of fog chamber 4 and high-voltage electrostatic dust separator, only corona discharge makes water fog particle charged, lotus electric water fog particle under the effect of electrostatic attraction, captured by collecting polar plate, fall with the form of water droplet, reach the purpose of discharging fume-dehydrating.The air inlet of described electrostatic precipitator 1 is connected with the exhaust opening of coal-fired electric generation furnace, the gas outlet of this electrostatic precipitator 1 is connected by the bottom of deduster discharge duct 5 with described dust-removal and desulfurizing denitration one-level spray chamber 2, the one-level spray chamber exhaust outlet that is arranged on above the dust-removal and desulfurizing denitration one-level spray chamber 2 is connected by the bottom of one-level spray chamber discharge duct 6 with described dust-removal and desulfurizing denitration secondary spray chamber 3, the secondary spray chamber exhaust outlet that is arranged on above the dust-removal and desulfurizing denitration secondary spray chamber 3 is connected with the bottom of described static except fog chamber 4 by secondary spray chamber discharge duct 7, be arranged on described static except being equipped with air-introduced machine 9 in the static demist chamber gas outlet road 8 above the fog chamber 4, the gas outlet of its air-introduced machine 9 connects chimney by pipeline.Described dust-removal and desulfurizing denitration one-level spray chamber 2, dust-removal and desulfurizing denitration secondary spray chamber 3 and static all are arranged to the following case cell structure that opens wide except fog chamber 4, at this dust-removal and desulfurizing denitration one-level spray chamber 2, dust-removal and desulfurizing denitration secondary spray chamber 3 and static are provided with for dust-removal and desulfurizing denitration one-level spray chamber 2 except the below of fog chamber 4, dust-removal and desulfurizing denitration secondary spray chamber 3 and static are except fog chamber's 4 common water tanks 10 that use, top and the described dust-removal and desulfurizing denitration one-level spray chamber 2 of this water tank 10, dust-removal and desulfurizing denitration secondary spray chamber 3 and static are connected to form enclosed construction except the sidewall of fog chamber 4, and water tank 10 interior injection clear water consist of dust-removal and desulfurizing denitration one-level spray chamber 2, dust-removal and desulfurizing denitration secondary spray chamber 3 and static are except the bottom surface water seal of fog chamber 4.Remove mechanism with sediment in moisturizing facility, water level holding device and the water tank of water tank 10 configuration and belong to prior art, therefore not to repeat here.Be provided with aeration head 11 in water tank 10, this aeration head 11 distributes a plurality of in the bottom of water tank as the case may be.Aeration head 11 is connected with the ozone generator 13 that is arranged on water tank 10 outsides by ozone carrier pipe 12.Its ozone generator 13 can adopt the disclosed ozone generator of CN2491435Y, this ozone generator adopts DC high-voltage power supply, directly act on two electrodes, make the air or oxygen ionization between the two poles of the earth generate ozone, have the characteristics of simple in structure, efficient and economize on electricity.Be provided with one-level spray chamber spray head 14 in described dust-removal and desulfurizing denitration one-level spray chamber 2, this one-level spray chamber spray head 14 distributes a plurality of as requested.The water inlet that connects the one-level spray feed pipe 15 of each one-level spray chamber spray head 14 places under the described water tank 10 interior waters surface, is equipped with one-level spray water supply high-pressure hydraulic pump 16 in one-level spray feed pipe 15.Be provided with secondary spray chamber spray head 17 in described dust-removal and desulfurizing denitration secondary spray chamber 3, this secondary spray chamber spray head 17 distributes a plurality of equally as requested.The water inlet that connects the secondary spray feed pipe 18 of each secondary spray chamber spray head 17 places under the described water tank 10 interior waters surface equally, is equipped with secondary spray water supply high-pressure hydraulic pump 19 in secondary spray feed pipe 18.
The present invention is provided with the uniform flow grid 20 that are comprised of horizontal at regular intervals gusset in dust-removal and desulfurizing denitration one-level spray chamber 2.These uniform flow grid 20 can arrange multilayer, and the gusset position of each adjacent layer is staggeredly arranged.
The present invention is provided with the sieve plate 21 of horizontal in dust-removal and desulfurizing denitration secondary spray chamber 3, be provided with Ball-type packing 22 above the sieve plate 21 at this.During implementation, sieve plate 21 can adopt the sieve plate of the circular hole that gathers, and Ball-type packing 22 can adopt the plastic filler ball.
During the work of this device, the ozone that is generated by ozone generator 8 is transported to aeration head 11 by ozone carrier pipe 12, carry out aeration in water, a part of ozone dissolves in the water, and the ozone effusion water surface major part that another part fails to dissolve in the water enters in the dust-removal and desulfurizing denitration one-level spray chamber 2.The flue gas that boiler combustion produces at first enters electrostatic precipitator 1 and carries out dedusting, removes the dust more than 90% in the flue gas, enters in the dust-removal and desulfurizing denitration one-level spray chamber 2 by deduster discharge duct 5 through the flue gas after the dedusting.One-level spray water supply high-pressure hydraulic pump 16 draws up the Ozone Water in the water tank 10 come and passes through the Ozone Water of one-level spray chamber spray head 14 ejection atomizings by one-level spray feed pipe 15, the flue gas that enters in the dust-removal and desulfurizing denitration one-level spray chamber 2 is sprayed, the Ozone Water of spray and do not dissolve in ozone gas in the water and the nitric oxide chemically reactive in the flue gas generate can be water-soluble higher nitrogen oxides after fall into the water of water tank 10, the sulfur trioxide that the sulfur dioxide in the flue gas becomes with the ozonisation symphysis also falls into the water of water tank 10 again after in conjunction with generation sulfuric acid and sulfate with ozone water mist.The smoke gas flow that uniform flow grid 20 in the dust-removal and desulfurizing denitration one-level spray chamber 2 have entering in the dust-removal and desulfurizing denitration one-level spray chamber 2 carries out the effect that homogenize plays further reinforcement spraying and dedusting, desulphurization and denitration.Enter dust-removal and desulfurizing denitration secondary spray chamber 3 through the flue gas after 2 purifications of dust-removal and desulfurizing denitration one-level spray chamber by one-level spray chamber discharge duct 6 and carry out secondary Ozone Water spray, further flue gas is carried out dedusting, desulphurization and denitration, the course of work of its course of work and dust-removal and desulfurizing denitration one-level spray chamber is basic identical.The effect that the sieve plate 21 of dust-removal and desulfurizing denitration secondary spray chamber 3 interior settings and Ball-type packing 22 have intensified dust removal, desulphurization and denitration effect.Enter static except fog chamber 4 through the flue gas after 3 purifications of dust-removal and desulfurizing denitration secondary spray chamber by secondary spray chamber discharge duct 7, the flue gas that carries water fog particle removes in the process of fog chamber 4 at the static of flowing through, utilize the corona wire discharge to make water fog particle charged, and by collecting polar plate it is captured, drop in the water of water tank 10 with the form of water droplet.The flue gas that boiler combustion produces reaches higher discharge standard after carrying out dedusting, desulphurization and denitration by electrostatic precipitator 1, dust-removal and desulfurizing denitration one-level spray chamber 2, dust-removal and desulfurizing denitration secondary spray chamber 3.The flue gas of removing behind the water smokes except fog chamber 4 by static enters air-introduced machine 9 through static except the static demist chamber gas outlet road 8 above the fog chamber 4, and sends into chimney by air-introduced machine 9 and discharge.

Claims (3)

1. coal-fired electric generation furnace dust-removal and desulfurizing denitrification apparatus, it is characterized in that: it has the electrostatic precipitator (1) that is arranged in order from front to back, dust-removal and desulfurizing denitration one-level spray chamber (2), the static of dust-removal and desulfurizing denitration secondary spray chamber (3) and in-built electrical hachure and collecting polar plate is except fog chamber (4), the air inlet of described electrostatic precipitator (1) is connected with the exhaust opening of coal-fired electric generation furnace, the gas outlet of this electrostatic precipitator (1) is connected by the bottom of deduster discharge duct (5) with described dust-removal and desulfurizing denitration one-level spray chamber (2), the one-level spray chamber exhaust outlet that is arranged on above the dust-removal and desulfurizing denitration one-level spray chamber (2) is connected by the bottom of one-level spray chamber discharge duct (6) with described dust-removal and desulfurizing denitration secondary spray chamber (3), the secondary spray chamber exhaust outlet that is arranged on above the dust-removal and desulfurizing denitration secondary spray chamber (3) is connected with the bottom of described static except fog chamber (4) by secondary spray chamber discharge duct (7), is arranged on described static and is equipped with air-introduced machine (9) except the static demist chamber gas outlet road (8) above the fog chamber (4); The below of removing fog chamber (4) at described dust-removal and desulfurizing denitration one-level spray chamber (2), dust-removal and desulfurizing denitration secondary spray chamber (3) and static is provided with formation dust-removal and desulfurizing denitration one-level spray chamber (2), dust-removal and desulfurizing denitration secondary spray chamber (3) and static except the water tank (10) of fog chamber (4) bottom surface water seal, be provided with aeration head (11) in this water tank (10), aeration head (11) is connected with the ozone generator (13) that is arranged on water tank (10) outside by ozone carrier pipe (12); In described dust-removal and desulfurizing denitration one-level spray chamber (2), be provided with one-level spray chamber spray head (14), the one-level spray feed pipe (15) of this one-level spray chamber spray head (14) is connected in the described water tank (10), and this one-level spray feed pipe (15) is equipped with one-level spray water supply high-pressure hydraulic pump (16); In described dust-removal and desulfurizing denitration secondary spray chamber (3), be provided with secondary spray chamber spray head (17), the secondary spray feed pipe (18) of this secondary spray chamber spray head (17) is connected in the described water tank (10), and this secondary spray feed pipe (18) is equipped with secondary spray water supply high-pressure hydraulic pump (19).
2. coal-fired electric generation furnace dust-removal and desulfurizing denitrification apparatus according to claim 1 is characterized in that: be provided with the uniform flow grid (20) that are comprised of horizontal at regular intervals gusset in described dust-removal and desulfurizing denitration one-level spray chamber (2).
3. coal-fired electric generation furnace dust-removal and desulfurizing denitrification apparatus according to claim 1, it is characterized in that: in described dust-removal and desulfurizing denitration secondary spray chamber (3), be provided with the sieve plate (21) of horizontal, on this sieve plate (21), be provided with Ball-type packing (22).
CN201310030962.7A 2013-01-28 2013-01-28 Dust removal, desulfurization and denitrification device of coal-fired power generation boiler Expired - Fee Related CN103055649B (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105413423A (en) * 2015-11-13 2016-03-23 黄冈银河阿迪药业有限公司 Method for eliminating nitrogen oxide waste gas produced in metronidazole production process
CN105833634A (en) * 2016-05-11 2016-08-10 李凤来 Harmful-gas purifying device
CN105983311A (en) * 2015-01-30 2016-10-05 邱吉康 Desulfurization and denitrification integrated system for flue gas of chain-grate boiler
CN106390650A (en) * 2016-05-31 2017-02-15 徐秀 Air cleaning device for construction site
CN107398352A (en) * 2017-08-29 2017-11-28 北京哈宜节能环保科技开发股份有限公司 A kind of device and its application method that fire coal boiler fume combined pollutant is removed using electric charge
CN108057329A (en) * 2017-11-16 2018-05-22 李艺 A kind of vehicle frame and domestic garbage pyrolysis system integration structure locomotive
CN108295629A (en) * 2018-03-23 2018-07-20 庄建中 Flue gas and desulfurizing and denitrifying, demisting electrostatic tower
CN110152421A (en) * 2019-06-28 2019-08-23 河南宗源环保科技有限公司 Tunnel kiln exhaust fume washing device
CN110496530A (en) * 2019-08-22 2019-11-26 东莞市环境科学研究所 A kind of method and apparatus of processing low temperature oil expression exhaust gas
CN111228982A (en) * 2020-01-14 2020-06-05 张德杰 Waste gas treatment device and treatment method thereof
CN111298609A (en) * 2019-12-05 2020-06-19 安徽顺达环保科技股份有限公司 Industrial kiln electrostatic dust removal denitration device in coordination

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CN202237773U (en) * 2011-10-14 2012-05-30 大连通宝锅炉配套有限公司 Desulfurizing tower device in flue gas desulfurization system of industrial boiler
CN203139851U (en) * 2013-01-28 2013-08-21 北京玄路海科技有限公司 Desulfurization and denitrification device of coal-fired power generation boiler

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105983311A (en) * 2015-01-30 2016-10-05 邱吉康 Desulfurization and denitrification integrated system for flue gas of chain-grate boiler
CN105413423A (en) * 2015-11-13 2016-03-23 黄冈银河阿迪药业有限公司 Method for eliminating nitrogen oxide waste gas produced in metronidazole production process
CN105833634A (en) * 2016-05-11 2016-08-10 李凤来 Harmful-gas purifying device
CN106390650A (en) * 2016-05-31 2017-02-15 徐秀 Air cleaning device for construction site
CN107398352A (en) * 2017-08-29 2017-11-28 北京哈宜节能环保科技开发股份有限公司 A kind of device and its application method that fire coal boiler fume combined pollutant is removed using electric charge
CN108057329A (en) * 2017-11-16 2018-05-22 李艺 A kind of vehicle frame and domestic garbage pyrolysis system integration structure locomotive
CN108295629A (en) * 2018-03-23 2018-07-20 庄建中 Flue gas and desulfurizing and denitrifying, demisting electrostatic tower
CN110152421A (en) * 2019-06-28 2019-08-23 河南宗源环保科技有限公司 Tunnel kiln exhaust fume washing device
CN110496530A (en) * 2019-08-22 2019-11-26 东莞市环境科学研究所 A kind of method and apparatus of processing low temperature oil expression exhaust gas
CN111298609A (en) * 2019-12-05 2020-06-19 安徽顺达环保科技股份有限公司 Industrial kiln electrostatic dust removal denitration device in coordination
CN111228982A (en) * 2020-01-14 2020-06-05 张德杰 Waste gas treatment device and treatment method thereof

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