CN110604975A - Bag-type dust collector - Google Patents
Bag-type dust collector Download PDFInfo
- Publication number
- CN110604975A CN110604975A CN201810619468.7A CN201810619468A CN110604975A CN 110604975 A CN110604975 A CN 110604975A CN 201810619468 A CN201810619468 A CN 201810619468A CN 110604975 A CN110604975 A CN 110604975A
- Authority
- CN
- China
- Prior art keywords
- bag
- clean room
- type dust
- dust collector
- ash bucket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 71
- 238000003860 storage Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 6
- 239000000779 smoke Substances 0.000 abstract description 5
- 239000004744 fabric Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 13
- 239000003546 flue gas Substances 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 210000003437 trachea Anatomy 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a bag-type dust collector which comprises a gas storage tank, a clean room, an electromagnetic pulse valve, a purified gas outlet, a filter bag, a filter screen, a box body, a dust hopper, a dust discharge valve, a bracket, a dust-containing gas inlet and a gas pipe, wherein the gas storage tank is arranged in the clean room; the box body is arranged on the bracket and divided into a clean room and an ash bucket, and a filter screen is arranged between the clean room and the ash bucket; a dust-containing gas inlet is formed above the ash bucket, and an ash discharge valve is arranged below the ash bucket; the air pipe is arranged in the clean room, one end of the air pipe is connected with the air storage tank, and the filter bag is connected with the air pipe through the electromagnetic pulse valve; the clean room is provided with a purified gas outlet. The invention reduces the maintenance work intensity, reduces the maintenance cost, reduces the pollution to the environment and provides reliable guarantee for the continuous operation of the drying incineration system; the problems of black smoke emission of a chimney, frequent perforation of a cloth bag, repeated maintenance, unstable operation and the like can be avoided, and the economic benefit and the social benefit are effectively improved.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a bag-type dust collector.
Background
The sludge treatment process mainly comprises a drying system, an incineration system, a flue gas purification system and a public basic device. The flue gas purification system mainly comprises a desulfurizing tower and a bag-type dust collector. The sludge drying and incineration disposal process is not perfect in the configuration and selection of system equipment, so that the operation continuity is restricted, the overhaul working strength is increased, the overhaul cost is increased, and the environment is polluted.
The pulse gas transmission connecting pipeline of the bag-type dust remover shakes violently during soot blowing to cause the rubber gas transmission pipeline to fall off, so that the dust removal function of the rubber gas transmission pipeline is lost; when the pulse gas transmission connecting pipeline falls off, the atmosphere is sucked into the bag-type dust collector to form a smoke system with reduced negative pressure, so that the bag is seriously stressed unevenly when the bag is operated under unstable high negative pressure; when the incinerator is stopped, air sucked into the bag-type dust remover cannot be exhausted, when the temperature of flue gas drops to a dew point, the flue gas contacts and reacts with externally-entering gas, acid substances are generated, the bag is seriously corroded, corrosion to other parts inside the bag-type dust remover is increased, the bag loses the original mechanical strength, and finally dust in the flue gas is directly discharged to pollute the environment. Due to frequent failure of the bag-type dust collector, the continuous operation of the drying incineration system is seriously influenced once a week, the intensity of maintenance work and the expenditure of maintenance cost are increased, the concentration of dust in smoke exceeds the standard and is discharged, and the environment is polluted.
Disclosure of Invention
Technical problem to be solved
Aiming at the defect problems of the prior art, the invention aims to provide the bag-type dust collector, which improves the operation stability of the bag-type dust collector, ensures the production continuity, lightens the maintenance intensity and reduces the pollution to the environment.
(II) technical scheme
A bag-type dust collector comprises a gas storage tank, a clean room, an electromagnetic pulse valve, a purified gas outlet, a filter bag, a filter screen, a box body, a dust hopper, a dust discharge valve, a bracket, a dust-containing gas inlet and a gas pipe; the box body is arranged on the bracket and divided into a clean room and an ash bucket, and a filter screen is arranged between the clean room and the ash bucket; a dust-containing gas inlet is formed above the ash bucket, and an ash discharge valve is arranged below the ash bucket; the air pipe is arranged in the clean room, one end of the air pipe is connected with the air storage tank, and the filter bag is connected with the air pipe through the electromagnetic pulse valve; the clean room is provided with a purified gas outlet.
According to an embodiment of the invention, the gas pipe is a metal pipeline, and the metal pipeline is respectively connected with the gas storage tank and the electromagnetic pulse valve through flanges.
According to one embodiment of the invention, the clean room is internally provided with an annular gap ejector, and the electromagnetic pulse valve is connected with the annular gap ejector.
According to an embodiment of the invention, a filter cage is arranged in the filter bag.
According to an embodiment of the invention, the filter screen is a stainless steel filter screen.
According to an embodiment of the invention, the holder is a stainless steel holder.
According to an embodiment of the present invention, a nozzle is installed in the clean room.
(III) advantageous effects
By adopting the technical scheme of the invention, the bag-type dust collector has the characteristics of high dust collection efficiency, simple structure, convenient operation and maintenance, and low manufacturing cost and running cost; the overhaul working strength is reduced, the overhaul cost is reduced, the pollution to the environment is reduced, and the reliable guarantee is provided for the continuous operation of a drying incineration system; the problems of black smoke emission of a chimney, frequent perforation of a cloth bag, repeated maintenance, unstable operation and the like can be avoided, and the economic benefit and the social benefit are effectively improved.
Drawings
In the present invention, like reference numerals refer to like features throughout, wherein:
FIG. 1 is a structural view of a bag-type dust collector of the present invention.
Description of reference numerals:
1. a gas storage tank; 2. a clean room; 3. an electromagnetic pulse valve; 4. an annular space ejector; 5. a purge gas outlet; 6. a filter bag; 7. a filter screen; 8. a box body; 9. an ash hopper; 10. an ash discharge valve; 11. a support; 12. a dusty gas inlet; an air pipe 13; a nozzle 14.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings and the embodiment.
Referring to fig. 1, the bag-type dust collector comprises a gas storage tank 1, a cleaning chamber 2, an electromagnetic pulse valve 3, an annular gap ejector 4, a purified gas outlet 5, a filter bag 6, a filter screen 7, a box body 8, a dust hopper 9, a dust discharge valve 10, a support 11, a dust-containing gas inlet 12, a gas pipe 13 and a spray pipe 14.
The box body 8 is arranged on the bracket 11, the box body 8 is divided into a clean room 2 and an ash bucket 9, and a filter screen 7 is arranged between the clean room 2 and the ash bucket 9. A dust-containing gas inlet 12 is arranged above the ash bucket 9, and an ash discharge valve 10 is arranged below the ash bucket 9. The trachea 13 is installed in the toilet 2, and trachea 13 one end links to each other with gas holder 1, and filter bag 6 passes through electromagnetic pulse valve 3 and links to each other with trachea 13, and electromagnetic pulse valve 3 still links to each other with annular space ejector 4. The clean room 2 is provided with a purified gas outlet 5.
The air pipe 13 is a metal hose which is respectively connected with the air storage tank and the electromagnetic pulse valve through flanges. A filter cage is arranged in the filter bag 6. The filter screen 7 may be a stainless steel filter screen. The bracket 11 is a stainless steel bracket. In order to improve the filtering effect of the gas, a plurality of nozzles 14 are installed in the clean room 2.
In the specific implementation process, the negative pressure generated by the induced draft fan is used for generating flue gas generated by treating sludge in the incinerator through the process flow of the bag-type dust remover, the flue gas is desulfurized in the semidry desulfurization tower and then enters the bag-type dust remover for dust removal treatment, and the flue gas is discharged after reaching the standard. The dust-containing gas enters the bag chamber from the dust-containing gas inlet, a part of coarse dust particles are settled by inertia or gravity and fall into the dust hopper, the rest most dust particles rise along with the airflow and are filtered by the filter bag, the dust particles are retained outside the filter bag, the purified gas enters the cleaning chamber from the inside of the filter bag, then is discharged from the purified gas outlet, enters the induced draft fan and the chimney and is discharged into the atmosphere, and therefore the purpose of dust removal is achieved. When the resistance of the inlet and the outlet of the dust remover changes and reaches a certain differential pressure value, the ash removal controller sends an ash removal instruction to the electromagnetic pulse valve, and ash removal airflow is instantly sent into the bag in a pulse mode in the reverse flow direction of the flue gas along with the opening of the pulse electromagnetic valve, so that the filter bag is strongly shaken, and dust adsorbed on the outer side of the filter bag is shaken off, and the aim of removing ash is achieved.
The main reasons for the failure of the bag-type dust collector in the using process are as follows:
1. the pulse gas transmission connecting pipeline of the bag-type dust remover is shorter, no buffer room is available when the bag-type dust remover blows dust, the reaction force generated by compressed air when the dust is blown can not be timely released, and the fixing capacity of the connecting mode of the rubber hose and the hoop is insufficient, so that the pulse gas transmission connecting pipeline can generate violent shaking when blowing dust to cause the falling of the rubber gas transmission pipeline, and the dust removing effect of the pulse gas transmission connecting pipeline is lost.
2. The bag-type dust collector operates under the negative pressure environment, when the pulse gas transmission connecting pipeline falls off, the atmosphere is sucked into the bag-type dust collector to form the reduction of the negative pressure of a flue gas system, and in order to keep the working pressure in the incinerator, only the power of the induced draft fan is increased, so that the bag is seriously unevenly stressed when the bag operates under the unstable high negative pressure.
3. When the incinerator is stopped, air sucked into the bag-type dust remover cannot be exhausted, when the temperature of flue gas drops to a dew point, the flue gas contacts and reacts with externally-entering gas, acid substances are generated, the bag is seriously corroded, corrosion to other parts inside the bag-type dust remover is increased, the bag loses the original mechanical strength, and finally dust in the flue gas is directly discharged to pollute the environment.
In order to avoid the occurrence of the faults, the connection mode of the original pulse gas transmission pipeline is optimized under the condition of not changing the original process flow: in order to facilitate maintenance, a maintenance platform and a stair with larger width are built again 2m below the original maintenance platform; moving the gas storage tank down by 1.5m and placing the gas storage tank on a newly-built maintenance platform; the original connection mode of the rubber hose and the anchor ear is changed into the connection mode of a metal hose with a flange, so that the purposes of increasing strength and releasing reaction force are achieved; and (3) extending the spray pipe by 0.5 meter to the metal hose to make up the vacant part between the original spray pipe and the modified metal hose.
The optimization aims to improve the operation stability of the bag-type dust collector, ensure the production continuity, lighten the overhaul strength and reduce the pollution to the environment.
In conclusion, by adopting the technical scheme of the invention, the bag-type dust collector disclosed by the embodiment of the invention has the characteristics of high dust collection efficiency, simple structure, convenience in operation and maintenance, and low manufacturing cost and operating cost; the bag-type dust collector disclosed by the invention has the advantages that the overhaul working strength is reduced, the overhaul cost is reduced, the pollution to the environment is reduced, and the reliable guarantee is provided for the continuous operation of a drying incineration system; the problems of black smoke emission of a chimney, frequent perforation of a cloth bag, repeated maintenance, unstable operation and the like can be avoided, and the economic benefit and the social benefit are effectively improved.
Claims (7)
1. A bag-type dust collector is characterized in that: comprises a gas storage tank, a clean room, an electromagnetic pulse valve, a purified gas outlet, a filter bag, a filter screen, a box body, a dust hopper, a dust discharge valve, a bracket, a dust-containing gas inlet and a gas pipe; the box body is arranged on the bracket and divided into a clean room and an ash bucket, and a filter screen is arranged between the clean room and the ash bucket; a dust-containing gas inlet is formed above the ash bucket, and an ash discharge valve is arranged below the ash bucket; the air pipe is arranged in the clean room, one end of the air pipe is connected with the air storage tank, and the filter bag is connected with the air pipe through the electromagnetic pulse valve; the clean room is provided with a purified gas outlet.
2. The bag-type dust collector of claim 1, wherein: the gas pipe is a metal pipeline, and the metal pipeline is connected with the gas storage tank and the electromagnetic pulse valve through flanges respectively.
3. The bag-type dust collector of claim 2, wherein: an annular gap ejector is installed in the clean room, and the electromagnetic pulse valve is connected with the annular gap ejector.
4. A bag-type dust collector as defined in claim 3, wherein: and a filter cage is arranged in the filter bag.
5. The bag-type dust collector of claim 1, wherein: the filter screen is a stainless steel filter screen.
6. The bag-type dust collector of claim 1, wherein: the support is a stainless steel support.
7. The bag-type dust collector of claim 1, wherein: and the clean room is internally provided with a spray pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810619468.7A CN110604975A (en) | 2018-06-15 | 2018-06-15 | Bag-type dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810619468.7A CN110604975A (en) | 2018-06-15 | 2018-06-15 | Bag-type dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110604975A true CN110604975A (en) | 2019-12-24 |
Family
ID=68888134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810619468.7A Pending CN110604975A (en) | 2018-06-15 | 2018-06-15 | Bag-type dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110604975A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113813711A (en) * | 2021-11-08 | 2021-12-21 | 龚旭升 | Dead-angle-free bag-type dust collector convenient to clean and capable of achieving multi-layer filtering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053730A (en) * | 2007-02-06 | 2007-10-17 | 合肥水泥研究设计院 | Tank and tube combined pulse bag dust remover |
| CN201840949U (en) * | 2010-11-15 | 2011-05-25 | 洁华控股股份有限公司 | Pulse bag type deduster with annular-space ejectors |
| CN103372361A (en) * | 2013-08-09 | 2013-10-30 | 张家港市盛港绿色防火建材有限公司 | Single pulse bag type dust collector |
| CN205815341U (en) * | 2016-07-27 | 2016-12-21 | 苏州欧蓝森环境设备有限公司 | A kind of sack cleaner being flexible coupling with anti-high pressure antidetonation |
| CN208599359U (en) * | 2018-06-15 | 2019-03-15 | 上海城投污水处理有限公司 | A kind of bag filter |
-
2018
- 2018-06-15 CN CN201810619468.7A patent/CN110604975A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053730A (en) * | 2007-02-06 | 2007-10-17 | 合肥水泥研究设计院 | Tank and tube combined pulse bag dust remover |
| CN201840949U (en) * | 2010-11-15 | 2011-05-25 | 洁华控股股份有限公司 | Pulse bag type deduster with annular-space ejectors |
| CN103372361A (en) * | 2013-08-09 | 2013-10-30 | 张家港市盛港绿色防火建材有限公司 | Single pulse bag type dust collector |
| CN205815341U (en) * | 2016-07-27 | 2016-12-21 | 苏州欧蓝森环境设备有限公司 | A kind of sack cleaner being flexible coupling with anti-high pressure antidetonation |
| CN208599359U (en) * | 2018-06-15 | 2019-03-15 | 上海城投污水处理有限公司 | A kind of bag filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113813711A (en) * | 2021-11-08 | 2021-12-21 | 龚旭升 | Dead-angle-free bag-type dust collector convenient to clean and capable of achieving multi-layer filtering |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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