CN203139851U - Desulfurization and denitrification device of coal-fired power generation boiler - Google Patents
Desulfurization and denitrification device of coal-fired power generation boiler Download PDFInfo
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- CN203139851U CN203139851U CN 201320044360 CN201320044360U CN203139851U CN 203139851 U CN203139851 U CN 203139851U CN 201320044360 CN201320044360 CN 201320044360 CN 201320044360 U CN201320044360 U CN 201320044360U CN 203139851 U CN203139851 U CN 203139851U
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Abstract
The utility model discloses a desulfurization and denitrification device of a coal-fired power generation boiler. The desulfurization and denitrification device is provided with an electrostatic precipitator, a first-stage dedusting desulfurization and denitrification spray chamber, a second-stage dedusting desulfurization and denitrification spray chamber and an electrostatic demisting chamber which is internally provided with a corona wire and a dust collecting pole plate, wherein the electrostatic precipitator, the first-stage dedusting desulfurization and denitrification spray chamber, the second-stage dedusting desulfurization and denitrification spray chamber and the electrostatic demisting chamber are connected through exhaust pipelines and are successively arranged from front to back, and an induced draft fan is assembled in the exhaust pipeline of the electrostatic demisting chamber; and a water box for forming a bottom surface water seal is arranged below the first-stage dedusting desulfurization and denitrification spray chamber, the second-stage dedusting desulfurization and denitrification spray chamber and the electrostatic demisting chamber, and the water box is internally provided with an aeration joint connected with an ozonator. The desulfurization and denitrification device provided by the utility model has the advantages that the structure is simple, the construction and operating cost is low, the dedusting, desulfurization and denitrification efficiencies are high, meanwhile, the ozonic strong oxidation function is utilized to realize the desulfurization and the denitrification of smoke, the conventional acid-base neutralization method is avoided, the smoke desulfurization and denitrification process is simplified, and environment-friendly problem during raw material production as lime and ammonium hydroxide are utilized as a desulfurization and denitrification raw material is solved.
Description
Technical field
The utility model relates to the fume emission purifier, is 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; though its purification efficiency height; but investment and the operating cost of equipment are big; 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 protecting environment.
Summary of the invention
The purpose of this utility model is at the problems referred to above, provides a kind of construction and operating cost low, and dedusting, desulfurization, denitration efficiency height avoid 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 simultaneously.
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 control of dust pole 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 constitute 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 of being 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 beneficial effects of the utility model are:
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, construction and operating cost are low, dedusting, desulfurization, denitration efficiency height;
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 the raw material production environmental issue of using lime and ammoniacal liquor to bring as the desulfurizing and denitrifying process raw material again.
Description of drawings
Accompanying drawing 1 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 utility model is described.
As accompanying drawing, the static that this coal-fired electric generation furnace dust-removal and desulfurizing denitrification apparatus has 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 control of dust pole plate that are arranged in order from front to back is except fog chamber 4.Electrostatic precipitator 1 wherein can adopt the disclosed coal-fired electric generation furnace electrostatic precipitator of CN2894856Y, this coal-fired electric generation furnace electrostatic precipitator 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 electrostatic precipitator efficiently, 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 the control of dust pole 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, inject clear water in the water tank 10 and constitute 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, do not give unnecessary details at this.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 utility model is provided with the uniform flow grid of being made up of horizontal at regular intervals gusset 20 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 utility model 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 concrete enforcement, 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 next by one-level spray feed pipe 15 and passes through one-level spray chamber spray head 14 ejection atomized ozone water, 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 sulfur in smoke 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 flue gas stream 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, desulfurization, denitration.Enter dust-removal and desulfurizing denitration secondary spray chamber 3 through dust-removal and desulfurizing denitration one-level spray chamber 2 flue gas after being purified by one-level spray chamber discharge duct 6 and carry out secondary Ozone Water spray, further flue gas is carried out dedusting, desulfurization, 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 that arranges in the dust-removal and desulfurizing denitration secondary spray chamber 3 and Ball-type packing 22 have intensified dust removal, desulfurization, denitration effect.Enter static except fog chamber 4 through dust-removal and desulfurizing denitration secondary spray chamber 3 flue gas after being purified 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 the control of dust pole 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, desulfurization, 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 control of dust pole 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 of being made up of horizontal at regular intervals gusset (20) 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320044360 CN203139851U (en) | 2013-01-28 | 2013-01-28 | Desulfurization and denitrification device of coal-fired power generation boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320044360 CN203139851U (en) | 2013-01-28 | 2013-01-28 | Desulfurization and denitrification device of coal-fired power generation boiler |
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| Publication Number | Publication Date |
|---|---|
| CN203139851U true CN203139851U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320044360 Withdrawn - After Issue CN203139851U (en) | 2013-01-28 | 2013-01-28 | Desulfurization and denitrification device of coal-fired power generation boiler |
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| CN (1) | CN203139851U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055649A (en) * | 2013-01-28 | 2013-04-24 | 北京玄路海科技有限公司 | Dust removal, desulfurization and denitrification device of coal-fired power generation boiler |
| CN104275065A (en) * | 2014-11-07 | 2015-01-14 | 广西南宁华国环境科技有限公司 | Plasma and water curtain dust removal device |
| CN104437039A (en) * | 2014-06-05 | 2015-03-25 | 浙江富春江环保热电股份有限公司 | Denitration demisting device and method after wet desulfurization |
-
2013
- 2013-01-28 CN CN 201320044360 patent/CN203139851U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055649A (en) * | 2013-01-28 | 2013-04-24 | 北京玄路海科技有限公司 | Dust removal, desulfurization and denitrification device of coal-fired power generation boiler |
| CN103055649B (en) * | 2013-01-28 | 2015-03-11 | 北京玄路海科技有限公司 | Dust removal, desulfurization and denitrification device of coal-fired power generation boiler |
| CN104437039A (en) * | 2014-06-05 | 2015-03-25 | 浙江富春江环保热电股份有限公司 | Denitration demisting device and method after wet desulfurization |
| CN104437039B (en) * | 2014-06-05 | 2016-08-17 | 浙江富春江环保热电股份有限公司 | Denitration demister after wet desulphurization and method |
| CN104275065A (en) * | 2014-11-07 | 2015-01-14 | 广西南宁华国环境科技有限公司 | Plasma and water curtain dust removal device |
| CN104275065B (en) * | 2014-11-07 | 2016-01-20 | 广西南宁华国环境科技有限公司 | A kind of plasma and dust collector of water curtain |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130821 Effective date of abandoning: 20150311 |
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| RGAV | Abandon patent right to avoid regrant |