CN212790501U - Biomass boiler flue gas high temperature dust removal denitration integration arranges device - Google Patents
Biomass boiler flue gas high temperature dust removal denitration integration arranges device Download PDFInfo
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- CN212790501U CN212790501U CN202021413394.0U CN202021413394U CN212790501U CN 212790501 U CN212790501 U CN 212790501U CN 202021413394 U CN202021413394 U CN 202021413394U CN 212790501 U CN212790501 U CN 212790501U
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- Prior art keywords
- denitration
- biomass boiler
- flue gas
- flue
- sack cleaner
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- 239000000428 dust Substances 0.000 title claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000003546 flue gas Substances 0.000 title claims abstract description 28
- 239000002028 Biomass Substances 0.000 title claims abstract description 27
- 230000010354 integration Effects 0.000 title claims abstract description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000008676 import Effects 0.000 claims abstract description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims abstract description 6
- 239000003054 catalyst Substances 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- -1 Na and K Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
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- Chimneys And Flues (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to a biomass boiler flue gas handles technical field, specifically is a biomass boiler flue gas high temperature dust removal denitration integration arranges device, and it has effectively solved the problem of SCR denitration under the high dust condition of biomass boiler, and it includes the sack cleaner, air-purifying chamber, SCR denitrification facility that the gas outlet connection at sack cleaner top was arranged in order, the ash bucket is installed in the dust exit of sack cleaner bottom, defeated ash device is connected to the ash bucket bottom, the flue gas import has been seted up on the sack cleaner lateral wall, the flue gas import is through the one-level economizer export of admitting air flue connection biomass boiler, install the aqueous ammonia spray gun in the flue of admitting air, SCR denitrification facility top is connected through flue of giving vent to anger, high temperature fan biomass boiler's air preheater.
Description
Technical Field
The utility model relates to a biomass boiler flue gas handles technical field, specifically is a biomass boiler flue gas high temperature dust removal denitration integration arranges device.
Background
At present, the smoke emission standard of the biomass boiler is not specially designed in China, the smoke emission of the existing biomass boiler refers to the emission standard of the coal-fired boiler, a large number of coal-fired power plants realize ultralow emission at the present stage, and the biomass boiler mostly adopts an SNCR (selective non catalytic reduction) denitration technology, so that the denitration efficiency is low, and the standard of ultralow emission is difficult to achieve. If the SCR denitration device is directly arranged in the furnace, because the smoke of the biomass boiler has high dust content and the smoke has high dust viscosity and contains alkali metals such as Na and K, the catalyst is easy to block and be poisoned, so that the denitration efficiency is reduced. The flue gas temperature in the conventional cyclone dust removal process is low, generally about 180 ℃, and the flue gas after dust removal does not meet the temperature range of 320-400 ℃ of an SCR denitration system. If the temperature is raised after dust removal to meet the SCR denitration temperature requirement, the investment is high, the occupied area is large, and the economical efficiency is poor. At present, there is not the engineering case of successful application low temperature SCR denitration technique at home and abroad yet, before the low temperature denitration technique has not made the breakthrough, how to solve the problem that the SCR denitration exists under the high dust condition of biomass boiler to economical and reasonable arrange dust removal and deNOx systems, it is the utility model provides a technological key.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem of carrying out SCR denitration difficulty under the current high temperature removes dust, the utility model provides a device is arranged in integration of biomass boiler flue gas high temperature dust removal denitration, it has effectively solved the problem of SCR denitration under the high dust condition of biomass boiler.
The technical scheme is as follows: the utility model provides a biomass boiler flue gas high temperature dust removal denitration integration arranges device, its characterized in that, it includes the sack cleaner, air-purifying chamber, SCR denitrification facility that the exhanst gas outlet at sack cleaner top was arranged in order are connected, the ash bucket is installed in the dust exit department of sack cleaner bottom, defeated ash device is connected to the ash bucket bottom, the flue gas import has been seted up on the sack cleaner lateral wall, the flue gas import exports through the one-level economizer that admits air flue connection biomass boiler, install the aqueous ammonia spray gun in the flue that admits air, SCR denitrification facility top is connected through giving vent to anger flue, high temperature fan biomass boiler's air preheater.
The bag-type dust collector is further characterized in that a pulse valve is arranged in the bag-type dust collector and connected with compressed air;
the denitration device comprises a denitration shell, a denitration catalyst is arranged in the denitration shell, the bottom of the denitration shell is fixedly connected with the top of the air purifying chamber, and the top of the denitration shell is provided with an outlet connected with the air outlet flue.
Adopt the utility model discloses afterwards, SCR denitrification facility integration arranges in sack cleaner upper portion, and the aqueous ammonia spray gun arranges in flue gas import department, and flue gas and ammonia are superior to conventional SCR deNOx systems greatly through the effect of flow equalizing of filter bag and the stationary flow of air-purifying chamber and the effect of reduction air current vibration, reach SCR denitrification facility's flue gas air current distribution condition, and the technology is arranged in the integration, and compact structure has realized smooth SCR denitration under the high dust condition.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
See fig. 1, a biomass boiler flue gas high temperature dust removal denitration integration arranges device, it includes sack cleaner 1, the gas outlet connection at 1 top of sack cleaner arranges air-purifying chamber 2 in order, SCR denitrification facility 3, dust hopper 7 is installed in the dust exit of 1 bottom of sack cleaner, ash conveying device 8 is connected to dust hopper 7 bottom, ash conveying device 8 can be realized through the delivery pump, flue gas inlet 9 has been seted up on 1 lateral wall of sack cleaner, flue gas inlet 9 connects biomass boiler's one-level economizer export through the flue that admits air, install aqueous ammonia spray gun 5 in the flue that admits air, 3 tops of SCR denitrification facility are through giving vent to anger flue 10, biomass boiler's air preheater is connected to high temperature fan 4.
The bag-type dust remover 1 is also internally provided with a pulse valve 6, the pulse valve 6 is connected with compressed air, when the internal resistance of the bag-type dust remover 1 reaches a set value, pulse dust removal is started, and compressed air is introduced into the bag to expand, contract, expand and contract, so that dust on the outer wall of the bag falls down, and the purpose of dust removal is achieved.
The utility model discloses outstanding advantage lies in: the dust-free or low-dust denitration method can greatly prolong the service life of the catalyst, reduce the using amount of the catalyst and reduce the one-time investment of denitration equipment. The catalyst has no blockage problem, and the running resistance of the equipment is reduced, so that the energy consumption of the high-temperature induced draft fan is reduced. The SCR denitration device 3 is integrally arranged at the upper part of the bag-type dust collector 1, the ammonia water spray gun 5 is arranged at the flue gas inlet 9, flue gas and ammonia gas flow through the flow equalizing effect of the filter bag and the flow stabilizing and airflow vibration reducing effects of the air purifying chamber 2, and the distribution conditions of the flue gas airflow reaching the first layer of catalyst are greatly superior to those of a conventional SCR denitration system. The integrated arrangement process has compact structure and small occupied area.
Claims (3)
1. The utility model provides a biomass boiler flue gas high temperature dust removal denitration integration arranges device, its characterized in that, it includes the sack cleaner, air-purifying chamber, SCR denitrification facility that the exhanst gas outlet at sack cleaner top was arranged in order are connected, the ash bucket is installed in the dust exit department of sack cleaner bottom, defeated ash device is connected to the ash bucket bottom, the flue gas import has been seted up on the sack cleaner lateral wall, the flue gas import is through the one-level economizer export of admitting air flue connection biomass boiler, install the aqueous ammonia spray gun in the flue that admits air, SCR denitrification facility top is through flue, high temperature fan connection of giving vent to anger biomass boiler's air preheater.
2. The biomass boiler flue gas high-temperature dedusting and denitration integrated arrangement device according to claim 1, wherein a pulse valve is installed in the bag-type dust remover, and the pulse valve is connected with compressed air.
3. The integrated arrangement device for high-temperature dust removal and denitration of biomass boiler flue gas as claimed in claim 1, wherein the denitration device comprises a denitration shell, a denitration catalyst is arranged in the denitration shell, the bottom of the denitration shell is fixedly connected with the top of the gas purification chamber, and the top of the denitration shell is provided with an outlet connected with the gas outlet flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021413394.0U CN212790501U (en) | 2020-07-17 | 2020-07-17 | Biomass boiler flue gas high temperature dust removal denitration integration arranges device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021413394.0U CN212790501U (en) | 2020-07-17 | 2020-07-17 | Biomass boiler flue gas high temperature dust removal denitration integration arranges device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212790501U true CN212790501U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021413394.0U Active CN212790501U (en) | 2020-07-17 | 2020-07-17 | Biomass boiler flue gas high temperature dust removal denitration integration arranges device |
Country Status (1)
| Country | Link |
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| CN (1) | CN212790501U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729509A (en) * | 2020-07-17 | 2020-10-02 | 西安大唐电力设计研究院有限公司 | An integrated layout device for high temperature dust removal and denitrification of biomass boiler flue gas |
-
2020
- 2020-07-17 CN CN202021413394.0U patent/CN212790501U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729509A (en) * | 2020-07-17 | 2020-10-02 | 西安大唐电力设计研究院有限公司 | An integrated layout device for high temperature dust removal and denitrification of biomass boiler flue gas |
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