CN213556358U - Dust removal denitration integrated device - Google Patents
Dust removal denitration integrated device Download PDFInfo
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- CN213556358U CN213556358U CN202022465248.9U CN202022465248U CN213556358U CN 213556358 U CN213556358 U CN 213556358U CN 202022465248 U CN202022465248 U CN 202022465248U CN 213556358 U CN213556358 U CN 213556358U
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- dust remover
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- flue
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Abstract
The utility model discloses a dust removal denitration integrated device, which comprises a housin, the lower extreme is provided with the dust remover in the casing, the dust remover communicates with the import flue of one side, the dust remover top be equipped with SCR denitration reaction device in the casing, just SCR denitration reaction device with the dust remover closely docks and is a whole, one side of dust remover and SCR denitration reaction device butt joint is equipped with the dust remover air outlet, just the dust remover air outlet with SCR denitration reaction device's uptake flue intercommunication. The utility model discloses an optimize the device structure, make dust removal and denitration structure integration arrange that area is littleer, environmental protection, practical.
Description
Technical Field
The utility model relates to a flue gas purification technical field especially relates to a dust removal denitration integrated device.
Background
In recent years, with the general attention of people to atmospheric environmental protection, the desulfurization and denitrification of boilers in coal-fired power plants have made great progress, and particularly the release of the emission standard of atmospheric pollutants in thermal power plants (GB13223-2011) further tightens the emission limit of the atmospheric pollutants in the coal-fired power plants, wherein the emission limit of smoke dust is required to be 20mg/m3 in important control areas. Due to the limited environmental capacity, the relevant policies of Jiangsu province, Zhejiang province, Shanxi province, Guangzhou city and the like require that the coal-fired power plant refers to the pollutant emission standard limit of the gas turbine unit, namely, the smoke dust and SO under the condition that the reference oxygen content is 6 percent2、NOxThe discharge concentration is not higher than 5mg/m3、35mg/m3、50mg/m3. The state also correspondingly puts out relevant industrial kiln smoke pollutant emission standards, and some local standards are even directly consistent with the emission standards of thermal power plants.
At present, most of SCR denitration processes adopt high-dust arrangement, namely an SCR reactor is arranged in front of a bag-type dust remover, the arrangement mode has high requirements on SCR reaction temperature and catalyst performance, and particularly in some industrial kilns, part of components in smoke have irreversible damage to a catalyst, so that the smoke needs to be dedusted firstly and then subjected to SCR denitration.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a dust removal denitration integrated device optimizes the device structure in the principle of traditional dust removal denitration technique, makes its integration arrange, and is littleer, environmental protection, practical than other split type area, has same SOx/NOx control efficiency.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a dust removal denitration integrated device, includes the casing, the lower extreme is provided with the dust remover in the casing, the dust remover communicates with the import flue of one side, the dust remover top be equipped with SCR denitration reaction unit in the casing, just SCR denitration reaction unit with the dust remover closely docks into a whole, one side that dust remover and SCR denitration reaction unit docked is equipped with the dust remover air outlet, just the dust remover air outlet with SCR denitration reaction unit's uptake flue intercommunication.
Further, the SCR denitration reaction device comprises an ammonia injection grid, a static mixer, an SCR reactor and the uptake; the ascending flue is arranged in the shell on one side of the SCR denitration reaction device above the dust remover; an ammonia injection grid for injecting a denitration reducing agent is arranged in the uptake flue, a static mixer is further arranged above the ammonia injection grid, and an outlet at the upper end of the uptake flue is communicated with the SCR reactor of the SCR denitration reaction device.
Further, the SCR reactor comprises an even distribution device, a catalyst and an SCR outlet flue, and flue gas in the uptake flue sequentially passes through the even distribution device, the catalyst and the SCR outlet flue in the SCR reactor and then is discharged.
Further, the dust remover comprises at least one dust remover unit.
Furthermore, each dust collector unit comprises a dust collector air distribution valve, a dust collector chamber, a filter bag, an air outlet and an ash bucket; the dust remover air distribution valve is positioned at the lower end in the dust remover unit and is used for uniformly distributing flue gas to each dust remover bin in the upper end of the dust remover, a plurality of filter bags for intercepting dust are arranged above the dust remover bin, and an ash hopper is arranged below the dust remover bin; and the upper end of each dust collector unit is provided with a dust collector air outlet channel communicated with the smoke outlet of the filter bag of each dust collector unit.
Furthermore, each dust collector unit is communicated with a blowing system, and the blowing system is used for enabling dust intercepted on the surface of the filter bag to fall into a dust hopper for storage through back blowing.
Further, the filter bag is vertically installed.
Further, still include the support, the support fixed mounting in the casing bottom.
Compared with the prior art, the utility model discloses a beneficial technological effect:
1. the flue gas is dedusted and then denitrated, so that catalyst poisoning is prevented, and the service life of the catalyst is prolonged;
2. the dust remover and the SCR reactor are integrally arranged, so that the floor area is small, and the operation and maintenance are simple;
3. the investment and the operating cost are reduced.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a schematic view of the dust-removing and denitration integrated device of the present invention;
description of reference numerals: 1. an inlet flue; 2. a dust remover air distribution valve; 3. a dust collector bin; 4. a filter bag; 5. an air outlet channel of the dust remover; 6. a rising flue; 7. an ammonia injection grid; 8. a static mixer; 9. a catalyst; 10. a uniform distribution device; 11. an SCR outlet flue; 12. an SCR reactor.
Detailed Description
As shown in fig. 1, a dust removal and denitration integrated device comprises a housing, wherein the housing comprises a dust remover, the dust remover is arranged at the lower end in the housing and is communicated with an inlet flue 1 on one side, an SCR denitration reaction device is arranged in the housing above the dust remover, the SCR denitration reaction device and the dust remover are tightly butted into a whole, a dust remover air outlet is arranged on one side of the dust remover, which is butted with the SCR denitration reaction device, and the dust remover air outlet is communicated with an uptake flue of the SCR denitration reaction device.
Wherein: the SCR denitration reaction device comprises an ammonia injection grid 7, a static mixer 8, an SCR reactor 12 and the uptake 6; the ascending flue 6 is arranged in the shell on one side of the SCR denitration reaction device above the dust remover; an ammonia injection grid 7 for injecting a denitration reducing agent is arranged in the uptake flue 6, a static mixer 8 is further arranged above the ammonia injection grid 7, and an outlet at the upper end of the uptake flue 6 is communicated with the SCR reactor 12 of the SCR denitration reaction device. The SCR reactor 12 comprises an even distribution device 10, a catalyst 9 and an SCR outlet flue 11, and the flue gas in the uptake flue 6 sequentially passes through the even distribution device 10, the catalyst 9 and the SCR outlet flue 11 in the SCR reactor 12 and then is discharged.
The precipitator includes at least one precipitator unit. Each dust collector unit comprises a dust collector air distributing valve 2, a dust collector chamber 3, a filter bag 4, a dust collector air outlet and an ash bucket; the dust remover air distribution valve 2 is positioned at the lower end in the dust remover unit and is used for uniformly distributing flue gas to each dust remover bin 3 in the upper end of the dust remover, a plurality of filter bags 4 used for intercepting dust are arranged above the dust remover bin 3, and an ash hopper is arranged below the dust remover bin 3; and the upper ends of the dust collector units are provided with dust collector air outlet channels communicated with the smoke outlets of the filter bags 4 of the dust collector units, and the outlets of the dust collector air outlet channels are dust collector air outlets. Each dust collector unit is communicated with a blowing system, and the blowing system is used for enabling dust intercepted on the surface of the filter bag to fall into an ash bucket for storage through back blowing. The filter bag 4 is vertically installed.
The embodiment also comprises a bracket which is fixedly arranged at the bottom of the shell
The ash bucket is wide in upper portion and narrow in lower portion, and is convenient for mobile phone dust, be provided with the deashing mouth on the ash bucket, but install the deashing door or the valve of switch on the deashing mouth. The ammonia injection grid 7, the static mixer 8, the uniform distribution device 10 and the catalyst 9 are all conventional structures in the field, and are common structures in the dedusting and denitration process.
The utility model discloses a flue gas flow process as follows:
flue gas firstly enters a dust remover through an inlet flue 1, the flue gas is uniformly distributed to each dust remover bin 3 of the dust remover through a dust remover air distributing valve 2, a filter bag 4 for filtering dust is vertically arranged in each dust remover bin 3, the flue gas passes through the surface of the filter bag 4 at a constant speed, in the process, dust in the flue gas is intercepted on the surface of the filter bag 4, the dust intercepted on the surface of the filter bag is reversely blown through a blowing system and falls into an ash hopper at the lower end for storage, the flue gas is collected continuously through a dust remover air outlet channel 5 and enters an ascending flue 6 of an SCR denitration reaction device, an ammonia spraying grid 7 and a static mixer 8 are respectively arranged in the ascending flue 6, the ammonia spraying grid 7 is used for spraying a denitration reducing agent, the static mixer 8 is used for disturbing the flue gas so that the reducing agent and the flue gas are fully mixed, the mixed flue gas continuously ascends and enters an SCR reactor 12 of the SCR denitration reaction device, the uniform distribution device 10 is arranged in the SCR reactor 12, the uniform distribution device 10 uniformly distributes flue gas, a certain amount of catalysts 9 are arranged inside the SCR reactor 12, the flue gas uniformly distributed by the uniform distribution device 10 enters the catalysts 9 for denitration reaction, and the flue gas after reaction is finally discharged through an SCR outlet flue 11 below the SCR denitration reaction device.
The utility model discloses to remove dust and denitration integration in an organic whole, not only efficient but also area is little, convenient to use.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (8)
1. The utility model provides a dust removal denitration integrated device which characterized in that: the SCR denitration device comprises a shell, wherein a dust remover is arranged at the lower end in the shell and is communicated with an inlet flue on one side, an SCR denitration reaction device is arranged above the dust remover in the shell, the SCR denitration reaction device and the dust remover are tightly butted into a whole, a dust remover air outlet is arranged on one side of the dust remover, which is butted with the SCR denitration reaction device, and the dust remover air outlet is communicated with an ascending flue of the SCR denitration reaction device.
2. The integrated dedusting and denitration device of claim 1, characterized in that: the SCR denitration reaction device comprises an ammonia injection grid, a static mixer, an SCR reactor and the uptake flue; the ascending flue is arranged in the shell on one side of the SCR denitration reaction device above the dust remover; an ammonia injection grid for injecting a denitration reducing agent is arranged in the uptake flue, a static mixer is further arranged above the ammonia injection grid, and an outlet at the upper end of the uptake flue is communicated with the SCR reactor of the SCR denitration reaction device.
3. The integrated dedusting and denitration device of claim 2, characterized in that: the SCR reactor comprises an even distribution device, a catalyst and an SCR outlet flue, and flue gas in the uptake flue sequentially passes through the even distribution device, the catalyst and the SCR outlet flue in the SCR reactor and then is discharged.
4. The integrated dedusting and denitration device of claim 1, characterized in that: the precipitator includes at least one precipitator unit.
5. The integrated dedusting and denitration device of claim 4, characterized in that: each dust collector unit comprises a dust collector air distribution valve, a dust collector bin, a filter bag, an air outlet and an ash bucket; the dust remover air distribution valve is positioned at the lower end in the dust remover unit and is used for uniformly distributing flue gas to each dust remover bin in the upper end of the dust remover, a plurality of filter bags for intercepting dust are arranged above the dust remover bin, and an ash hopper is arranged below the dust remover bin; the upper end of each dust collector unit is provided with a dust collector air outlet channel communicated with the smoke outlet of the filter bag of each dust collector unit; and the outlet of the dust remover air outlet channel is a dust remover air outlet of the dust remover.
6. The integrated dedusting and denitration device of claim 4, characterized in that: each dust collector unit is communicated with a blowing system, and the blowing system is used for enabling dust intercepted on the surface of the filter bag to fall into an ash bucket for storage through back blowing.
7. The integrated dedusting and denitration device of claim 5 or 6, which is characterized in that: the filter bag is vertically installed.
8. The integrated dedusting and denitration device of claim 1, characterized in that: the support is fixedly arranged at the bottom of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022465248.9U CN213556358U (en) | 2020-10-30 | 2020-10-30 | Dust removal denitration integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022465248.9U CN213556358U (en) | 2020-10-30 | 2020-10-30 | Dust removal denitration integrated device |
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| Publication Number | Publication Date |
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| CN213556358U true CN213556358U (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022465248.9U Active CN213556358U (en) | 2020-10-30 | 2020-10-30 | Dust removal denitration integrated device |
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| CN (1) | CN213556358U (en) |
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2020
- 2020-10-30 CN CN202022465248.9U patent/CN213556358U/en active Active
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