CN108126464A - Boiler desulphurization denitration dedusting minimum discharge system and its desulphurization denitration dust removal method - Google Patents
Boiler desulphurization denitration dedusting minimum discharge system and its desulphurization denitration dust removal method Download PDFInfo
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- CN108126464A CN108126464A CN201810116137.1A CN201810116137A CN108126464A CN 108126464 A CN108126464 A CN 108126464A CN 201810116137 A CN201810116137 A CN 201810116137A CN 108126464 A CN108126464 A CN 108126464A
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- desulphurization denitration
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- remover
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
A kind of boiler desulphurization denitration dedusting minimum discharge system, including boiler, flue, bag filter, air-introduced machine, desulphurization denitration water bath dust-removing combination remover, moisture trap, chimney, boiler connects the top of bag filter, air-introduced machine and desulphurization denitration water bath dust-removing combination remover by flue order, moisture trap combines the connection of remover upper end with desulphurization denitration water bath dust-removing, and moisture trap upper end connects chimney lower part by the second flue；Longitudinal direction is equipped with isolating device among desulphurization denitration water bath dust-removing combination remover inner cavity, desulphurization denitration water bath dust-removing combination remover inner cavity is divided into left and right two chambers, left and right cavity bottom communicates；Left chamber's inner upper end is fixed with devulcanizer and the second denitrator, and moisture trap is fixed at right chamber upper end, and left and right chamber top is for cavity, and the cavity height is 0.3m 0.5m, and lower part is filled with water.By the technical program, gas cleaning is efficient, is conducive to environmental protection, while invests small, takes up an area few.
Description
Technical field
The present invention relates to smoke eliminator after boiler combustion and purification methods, are removed more particularly to boiler with desulphurization denitration
Dirt minimum discharge system and its desulphurization denitration dust removal method.
Background technology：
Containing different degrees of sulphur, nitre and flue dust in the flue gas that fire coal biomass fired boiler generates now, a large amount of flue gas is to big
Gas causes serious pollution, therefore particularly significant to the desulphurization and denitration and purification purified treatment of flue gas, especially with to nitrogen
The severization of oxide, sulfur dioxide control standard, while realize that desulphurization and denitration dedusting technology is increasingly subject to the weight of various aspects
Depending on.Desulphurization and denitration and dedusting technology are mostly in research and Industrial demonstration stage in flue gas at present, due in set of system
Desulphurization and denitration and dedusting are realized simultaneously, and investment is big, of high cost, takes up a large area.
Invention content：
For the above-mentioned prior art the problem of, the present invention provide a kind of boiler desulphurization denitration dedusting minimum discharge system
And its desulphurization denitration dust removal method, technical solution are：
A kind of boiler desulphurization denitration dedusting minimum discharge system, takes off including boiler, flue, bag filter, air-introduced machine, desulfurization
Nitre water bath dust-removing combination remover, moisture trap, chimney, boiler by flue order connect bag filter, air-introduced machine and
Desulphurization denitration water bath dust-removing combines the top of remover, and moisture trap combines remover upper end company with desulphurization denitration water bath dust-removing
Logical, moisture trap upper end connects chimney lower part by the second flue；
Longitudinal direction is equipped with isolating device among desulphurization denitration water bath dust-removing combination remover inner cavity, and desulphurization denitration water bath dust-removing is combined
Remover inner cavity is divided into left and right two chambers, and left and right cavity bottom communicates；
Left chamber's inner upper end is fixed with devulcanizer and the second denitrator, and moisture trap is fixed at right chamber upper end, left
Right chamber top is cavity, and the cavity height is 0.3m-0.5m, and lower part is filled with water.
Above-mentioned technical proposal can be further improved for：
Ammonium hydroxide denitrator is equipped in the burner hearth of the boiler, and ammonium hydroxide denitrator is 30 centimetres apart from burner hearth bottom.
Opening is equipped among the isolating device bottom.
The isolating device bottom is placed in the top of desulphurization denitration water bath dust-removing combination remover bottom, and the former bottom with
The bottom of the latter has certain distance.
The isolating device is divider wall or isolation board.
The desulphurization denitration water bath dust-removing combination remover is additionally provided with the dust processing pond communicated with right chamber bottom, dust
The height of processing pond is greater than or equal to the water surface of left and right chamber, less than the height of left and right chamber.
The dust processing pond is also connected with water circulating pump, and the water inlet end of the water pump is stretched into dust processing pond, water pump
Water outlet connects several nozzles, and the nozzle is placed in the top of left chamber and is placed in below devulcanizer and the second denitrator, flue gas
Above input end, for flue gas to be atomized and accelerates water circulating speed.
The chimney top is equipped with flue gas on-line checking device, height of the flue gas on-line checking device apart from 39 meters of chimney lower end,
The chimney top is equipped with lightning rod, and bottom end is equipped with lightning protection earthing device.
The boiler method of the desulphurization denitration dedusting of desulphurization denitration dedusting minimum discharge system, coal-fired biomass-burning is in boiler
During interior stove chamber inner combustion first after ammonium hydroxide denitrator carries out preliminary denitration process, the flue gas of generation enter bag filter into
Row dedusting for the first time, then flue gas by air-introduced machine enter desulphurization denitration water bath dust-removing combine remover left chamber top sky
Chamber, while the devulcanizer on left chamber top, the second denitrator sprinkling desulfurizing agent and denitrfying agent, the nozzle of water pump carry out atomization spray
Flue gas is atomized by water, and further desulphurization denitration dedusting gradually increases with the pressure on left chamber top, and flue gas enters left chamber
Water in along the place of communicating of left and right chamber lower portion into right chamber, continue upwardly into the cavity on right chamber top, realize
Further dedusting in water；Then flue gas enters moisture trap separation, and then the flue gas after gas-water separation passes through the second flue
Into chimney, the water isolated is fallen after rise into right chamber.
In desulphurization denitration water bath dust-removing combination remover at dust of the mud of a large amount of flue gases of purification by right chamber side
It is cleared again after the precipitation of reason pond, ensures the quality of the water of purifying smoke；
Alkali sodium hydroxide solution of the desulfurizing agent for concentration 5-10 ‰, the ammonium hydroxide or 30 ﹪ that denitrfying agent is a concentration of 26 ﹪
Urea liquid.
By the technical program, gas cleaning is efficient, energy-saving and environment-friendly, while invests small, and floor space is small, installation
Flexibly, operational safety is stable, convenient operating maintenance is quick.
Description of the drawings：
Fig. 1 is the structure diagram of boiler desulphurization denitration dedusting minimum discharge system；
Fig. 2 is the structure diagram of the embodiment 1 of the connection relation of divider wall and desulphurization denitration water bath dust-removing combination remover；
Fig. 3 is the structure diagram of the embodiment 2 of the connection relation of divider wall and desulphurization denitration water bath dust-removing combination remover；
Wherein：1. boiler, 2. flues, 3. bag filters, 4. air-introduced machines, 5. water pumps, the combination of 6. desulphurization denitration water bath dust-removings are de-
Except device, 7. divider walls, 8. dust processing ponds, 9. chimneys, 10. moisture traps, 11. second flues, 12. flue gas on-line checkings
Device, 13. lightning protection earthing devices, 14. ammonium hydroxide denitrators, 15. devulcanizers, 16. second denitrators.
Specific embodiment：
Embodiment 1：
As shown in Figure 1, 2：A kind of boiler desulphurization denitration dedusting minimum discharge system, including boiler 1, flue 2, bag filter
3rd, air-introduced machine 4, desulphurization denitration water bath dust-removing combination remover 6, moisture trap 10, chimney 9, boiler 1 are connected by 2 order of flue
The top of bag filter 3, air-introduced machine 4 and desulphurization denitration water bath dust-removing combination remover 6 is connect, moisture trap 10 takes off with desulfurization
The 6 upper end connection of nitre water bath dust-removing combination remover, 10 upper end of moisture trap connects 9 lower part of chimney by the second flue；
Longitudinal direction is equipped with divider wall 7 among 6 inner cavity of desulphurization denitration water bath dust-removing combination remover, and desulphurization denitration water bath dust-removing is combined
6 inner cavity of remover is divided into left and right two chambers, is equipped with opening among 7 bottom of divider wall, left and right chamber passes through 7 bottom of divider wall
The opening in communication in portion；
Left chamber's inner upper end is fixed with 15 and second denitrator 16 of devulcanizer, and moisture trap 10 is fixed in right chamber
End, left and right chamber top is cavity, and the cavity height is 0.3m-0.5m, and lower part is filled with water.It is equipped in the burner hearth of the boiler
Ammonium hydroxide denitrator 14, and ammonium hydroxide denitrator is 30 centimetres apart from burner hearth bottom, denitration effect is best.
The desulphurization denitration water bath dust-removing combination remover 6 is additionally provided with the dust processing pond 8 communicated with right chamber bottom, ash
The height of dirt processing pond is equal to the water surface of left and right chamber, less than the height of left and right chamber.
The dust processing pond 8 is also connected with water circulating pump 5, and the water inlet end of the water pump 5 is stretched into 8 in dust processing pond, water
The water outlet of pump 5 connects several nozzles, and the nozzle is placed in the top of left chamber and is placed in 15 and second denitrator 16 of devulcanizer
Above lower section, gas inlet end, for flue gas to be atomized and accelerates the circulation rate of water.
The chimney top is equipped with flue gas on-line checking device 12, height of the flue gas on-line checking device apart from 39 meters of chimney lower end
Degree, the chimney top are equipped with lightning rod, and bottom end is equipped with lightning protection earthing device 13.
Embodiment 2：
As shown in figure 3, a kind of boiler desulphurization denitration dedusting minimum discharge system, including boiler 1, flue 2, bag filter 3,
Air-introduced machine 4, desulphurization denitration water bath dust-removing combination remover 6, moisture trap 10, chimney 9, boiler 1 are connected by 2 order of flue
The top of bag filter 3, air-introduced machine 4 and desulphurization denitration water bath dust-removing combination remover 6, moisture trap 10 and desulphurization denitration
The 6 upper end connection of water bath dust-removing combination remover, 10 upper end of moisture trap connects 9 lower part of chimney by the second flue；
Longitudinal direction is equipped with divider wall 7 among 6 inner cavity of desulphurization denitration water bath dust-removing combination remover, and desulphurization denitration water bath dust-removing is combined
6 inner cavity of remover is divided into left and right two chambers, and 7 bottom of divider wall is placed in desulphurization denitration water bath dust-removing combination remover bottom
Top, and the former bottom and the bottom of the latter have certain distance,
Left and right chamber combines the gap between 6 bottom of remover by 7 bottom of divider wall and desulphurization denitration water bath dust-removing and communicates；
Left chamber's inner upper end is fixed with 15 and second denitrator 16 of devulcanizer, and moisture trap 10 is fixed in right chamber
End, left and right chamber top is cavity, and the cavity height is 0.3m-0.5m, and lower part is filled with water.It is equipped in the burner hearth of the boiler
Ammonium hydroxide denitrator 14, and ammonium hydroxide denitrator is 30 centimetres apart from burner hearth bottom, denitration effect is best.
The desulphurization denitration water bath dust-removing combination remover 6 is additionally provided with the dust processing pond 8 communicated with right chamber bottom, ash
The height of dirt processing pond is equal to the water surface of left and right chamber, less than the height of left and right chamber.
The dust processing pond 8 is also connected with water circulating pump 5, and the water inlet end of the water pump 5 is stretched into 8 in dust processing pond, water
The water outlet of pump 5 connects several nozzles, and the nozzle is placed in the top of left chamber and is placed in 15 and second denitrator 16 of devulcanizer
Lower section, for being atomized flue gas and accelerating the circulation rate of water.
The chimney top is equipped with flue gas on-line checking device, height of the flue gas on-line checking device 12 apart from 39 meters of chimney lower end
Degree, the chimney top are equipped with lightning rod, and bottom end is equipped with lightning protection earthing device.
It is needed according to client or space limitation, Desulfovibrio denitration water bath dust-removing combination remover 6 can be placed in underground, cloth
Bag dust collector 3 is placed in the top of desulphurization denitration water bath dust-removing combination remover 6, so not only can be antifreeze with winter, but also can reduce
Land use area.
The technological process of its desulphurization denitration dedusting is：Coal-fired biomass-burning is in the stove chamber inner combustion of boiler first through ammonium hydroxide
After denitrator carries out preliminary denitration process, the flue gas of generation enters bag filter and carries out dedusting for the first time, and then flue gas is by drawing
Wind turbine enter desulphurization denitration water bath dust-removing combination remover left chamber top cavity, while the devulcanizer on left chamber top,
Second denitrator sprays desulfurizing agent and denitrfying agent, and the nozzle of water pump carries out atomizing spray, flue gas is atomized, further desulphurization denitration
Dedusting gradually increases with the pressure on left chamber top, and flue gas enters communicating along left and right chamber lower portion in the water of left chamber
Place enters right chamber, continues upwardly into the cavity on right chamber top, realizes the further desulphurization denitration dedusting in water；Then
Flue gas enters moisture trap separation, and then the flue gas after gas-water separation enters chimney by the second flue, and the water after separation returns
Drop down onto right chamber.
In desulphurization denitration water bath dust-removing combination remover at dust of the mud of a large amount of flue gases of purification by right chamber side
It clears, is convenient to clean again after the precipitation of reason pond.
By this system, it is respectively after removing：Dirt 0-8 mg/m3, sulfur dioxide 10-30 mg/m3, nitrogen oxides 100-
180 mg/m³.My excessively existing minimum discharge standard is fully achieved in removal efficiency：Dirt 10mg/m3,50 mg/m3 of sulfur dioxide, nitrogen
200 mg/m3 of oxide.
Embodiment 3：
As shown in Figure 1, method of the boiler with the desulphurization denitration dedusting of desulphurization denitration dedusting minimum discharge system, coal-fired biomass-burning
In the stove chamber inner combustion of boiler 1 first after ammonium hydroxide denitrator 14 carries out preliminary denitration process, the flue gas of generation enters cloth bag
Deduster 3 carries out dedusting for the first time, and then flue gas enters the left chamber of desulphurization denitration water bath dust-removing combination remover 6 by air-introduced machine 4
The cavity on room top, while the devulcanizer 15 on left chamber top, the second denitrator 16 sprinkling desulfurizing agent and denitrfying agent, the spray of water pump
Head carries out atomizing spray, flue gas is atomized, further desulphurization denitration dedusting gradually increases, cigarette with the pressure on left chamber top
Gas enters in the water of left chamber and enters right chamber along the place of communicating of left and right chamber lower portion, continues upwardly into right chamber top
Cavity realizes the further desulphurization denitration dedusting in water；Then flue gas enters moisture trap separation 11, then gas-water separation
Flue gas afterwards enters chimney 9 by the second flue 11, and the water after separation is fallen after rise to right chamber.
In desulphurization denitration water bath dust-removing combination remover 6 at dust of the mud of a large amount of flue gases of purification by right chamber side
Reason pond 8 clears again after precipitating, and ensures the quality of the water of purifying smoke.
According to sulfur dioxide in flue gas and the content of nitrogen oxides, selective sweetening agent is the alkaline hydroxide of concentration 5-10 ‰
Sodium solution, denitrfying agent are the ammonium hydroxide of a concentration of 26 ﹪ or the urea liquid of 30 ﹪.
By invention, gas cleaning is efficient, and removal effect is good, is after removing：Dirt 0-8 mg/m3, sulfur dioxide 10-
The existing minimum discharge standard in China is fully achieved in 30mg/ m3, nitrogen oxides 100-180mg/m3：Dirt 10mg/m3, titanium dioxide
50 mg/m3 of sulphur, 200 mg/m3 of nitrogen oxides.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of boiler desulphurization denitration dedusting minimum discharge system, it is characterised in that：Including boiler, flue, bag filter,
Air-introduced machine, desulphurization denitration water bath dust-removing combination remover, moisture trap, chimney, boiler connect cloth bag by flue order and remove
The top of dirt device, air-introduced machine and desulphurization denitration water bath dust-removing combination remover, moisture trap and desulphurization denitration water bath dust-removing group
The connection of remover upper end is closed, moisture trap upper end connects chimney lower part by the second flue；
Longitudinal direction is equipped with isolating device among desulphurization denitration water bath dust-removing combination remover inner cavity, and desulphurization denitration water bath dust-removing is combined
Remover inner cavity is divided into left and right two chambers, and left and right cavity bottom communicates；
Left chamber's inner upper end is fixed with devulcanizer and the second denitrator, and moisture trap is fixed at right chamber upper end, left
Right chamber top is cavity, and the cavity height is 0.3m-0.5m, and lower part is filled with water.
2. boiler as described in claim 1 desulphurization denitration dedusting minimum discharge system, it is characterised in that：The stove of the boiler
Ammonium hydroxide denitrator is equipped in thorax, and ammonium hydroxide denitrator is 30 centimetres apart from burner hearth bottom.
3. boiler as described in claim 1 desulphurization denitration dedusting minimum discharge system, it is characterised in that：The isolating device
Opening is equipped among bottom.
4. boiler as described in claim 1 desulphurization denitration dedusting minimum discharge system, it is characterised in that：The isolating device
Bottom is placed in the top of desulphurization denitration water bath dust-removing combination remover bottom, and the former bottom and the bottom of the latter have a spacing
From.
5. the boiler desulphurization denitration dedusting minimum discharge system as described in 1-4 any claims, it is characterised in that：Described
Isolating device is divider wall or isolation board.
6. boiler as claimed in claim 5 desulphurization denitration dedusting minimum discharge system, it is characterised in that：The desulphurization denitration
Water bath dust-removing combination remover is additionally provided with the dust processing pond communicated with right chamber bottom, and the height of dust processing pond is higher than or waits
In the water surface of left and right chamber, less than the height of left and right chamber.
7. boiler as claimed in claim 6 desulphurization denitration dedusting minimum discharge system, it is characterised in that：The dust processing
Pond is also connected with water circulating pump, and the water inlet end of the water pump is stretched into dust processing pond, and the water outlet of water pump connects several nozzles, institute
Nozzle is stated to be placed in the top of left chamber and be placed in below devulcanizer and the second denitrator, above gas inlet.
8. boiler as described in claim 1 desulphurization denitration dedusting minimum discharge system, it is characterised in that：The chimney top
Equipped with flue gas on-line checking device, the chimney top is equipped with lightning rod, and bottom end is equipped with lightning protection earthing device.
9. the boiler described in claim 1-8 any claims is removed with the desulphurization denitration of desulphurization denitration dedusting minimum discharge system
The method of dirt, it is characterised in that：It is carried out just through ammonium hydroxide denitrator first during stove chamber inner combustion of the coal-fired biomass-burning in boiler
After walking denitration process, the flue gas of generation enters bag filter and carries out dedusting for the first time, and then flue gas enters desulfurization by air-introduced machine
The cavity on the left chamber top of denitration water bath dust-removing combination remover, while the devulcanizer on left chamber top, the second denitrator spray
Desulfurizing agent and denitrfying agent are spilt, the nozzle of water pump carries out atomizing spray, flue gas is atomized, further desulphurization denitration dedusting, with a left side
The pressure on chamber top gradually increases, and flue gas enters in the water of left chamber and enters right chamber along the place of communicating of left and right chamber lower portion
Room continues upwardly into the cavity on right chamber top, realizes the further dedusting in water；Then flue gas enters moisture trap
Separation, then the flue gas after gas-water separation enters chimney by the second flue, and the water isolated is fallen after rise into right chamber；
The dust processing pond that the mud of a large amount of flue gases of purification passes through right chamber side in desulphurization denitration water bath dust-removing combination remover
It is cleared again after precipitation, ensures the quality of the water of purifying smoke.
10. the boiler as claimed in claim 9 method of the desulphurization denitration dedusting of desulphurization denitration dedusting minimum discharge system,
It is characterized in that：The desulfurizing agent be concentration 5-10 ‰ alkali sodium hydroxide solution, denitrfying agent be a concentration of 26 ﹪ ammonium hydroxide or
The urea liquid of 30 ﹪.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810116137.1A CN108126464A (en) | 2018-02-06 | 2018-02-06 | Boiler desulphurization denitration dedusting minimum discharge system and its desulphurization denitration dust removal method |
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| CN201810116137.1A CN108126464A (en) | 2018-02-06 | 2018-02-06 | Boiler desulphurization denitration dedusting minimum discharge system and its desulphurization denitration dust removal method |
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| CN109258241A (en) * | 2018-08-22 | 2019-01-25 | 江苏大学 | A kind of greenhouse united heat and for carbon dioxide system |
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| CN105570882A (en) * | 2016-02-29 | 2016-05-11 | 太原锅炉集团有限公司 | Ultralow emission type circulating fluidized bed boiler system based on flow-state secondary reconstruction |
| CN205832789U (en) * | 2016-07-11 | 2016-12-28 | 中钢集团鞍山热能研究院有限公司 | Gas depositing dust, mixture integration all orchestration devices |
| CN208340380U (en) * | 2018-02-06 | 2019-01-08 | 东营市胜东特种纸有限责任公司 | Boiler desulphurization denitration dedusting minimum discharge system |
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| CN109059011A (en) * | 2018-07-25 | 2018-12-21 | 南通春光自控设备工程有限公司 | A kind of desulfuring and denitrifying apparatus |
| CN109258241A (en) * | 2018-08-22 | 2019-01-25 | 江苏大学 | A kind of greenhouse united heat and for carbon dioxide system |
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