CN102380265B - Explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal - Google Patents
Explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal Download PDFInfo
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- CN102380265B CN102380265B CN201110351195.0A CN201110351195A CN102380265B CN 102380265 B CN102380265 B CN 102380265B CN 201110351195 A CN201110351195 A CN 201110351195A CN 102380265 B CN102380265 B CN 102380265B
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- explosion
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- chamber
- filtering
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- 238000004880 explosion Methods 0.000 title claims abstract description 30
- 238000001914 filtration Methods 0.000 title claims abstract description 25
- 239000002802 bituminous coal Substances 0.000 title claims abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003546 flue gas Substances 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 5
- 239000011324 bead Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 4
- 238000005243 fluidization Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002360 explosive Substances 0.000 abstract description 3
- 230000000903 blocking Effects 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 239000002817 coal dust Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 239000000428 dust Substances 0.000 description 5
- 241000274582 Pycnanthus angolensis Species 0.000 description 3
- 239000011087 paperboard Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000011068 load Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002269 spontaneous Effects 0.000 description 1
- 230000003068 static Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses an explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal. The device comprises a box body, wherein the middle part of the box body is provided with a filtering chamber; the upper part of the box body is provided with a purified gas chamber; the lower part of the box body is provided with an ash hopper; a filtering bag is arranged in the filtering chamber; an opening at the upper end of the filtering bag is communicated with the purified gas chamber; a purified gas duct for blowing purified gas to the opening at the upper end of the filtering bag is formed in the purified gas chamber; an air inlet is formed on the filtering chamber of the box body; an air outlet is formed on the purified gas chamber of the box body; the air inlet is connected with a flue gas duct in a filtering area; the upper parts of baffle plates on two sides of the flue gas duct are provided with flow guide plates which ensure that the upper part of the flue gas duct is communicated with the upper part of the filtering area; and a porous flow blocking plate is arranged in the flue gas duct. The device has a reasonable structure and low resistance and can directly treat high-concentration, combustible and explosive pulverized bituminous coal, the purified gas discharging effect exceeds the environment-friendly standard, easily damaged parts are long in service life and low in maintenance workload, and necessary explosion-proof explosion-release measures are provided.
Description
Technical field
The present invention relates to a kind of explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal.
Background technology
Bituminous coal powder in domestic bituminous coal preparation filters and collects employing sack cleaner pattern:
1) sack cleaner
Former bituminous lump coal is after medium-speed pulverizer grinds and be dry, and mass dryness fraction≤1% of its coal dust, granularity account for 95%, then by blower fan, qualified coal dust in grinding machine released and filtered by sack cleaner for≤74um.The characteristics such as the bituminous coal powder granularity of extracting out from grinding machine is small, concentration is high, inflammable and explosive, flue gas water content height, deduster does not arrange necessary high-performance and filters measure and explosion-proof venting of dust explosion function, cause that filter bag local damage is serious, incidents of spontaneous combustion often occur in casing, equipment resistance superelevation, has a strong impact on continuously and safety in production.Therefore, the bag filter that filters and collect this flue gas under negative pressure must possess complete explosion-proof venting of dust explosion measure, have the filter capacity of processing high load capacity, could realize safe and reliable operation, cleaner production and failure rate is low.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructure, the explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal that explosion-proof performance is good.
Technical solution of the present invention is:
A kind of explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal, comprise casing, casing middle part is filter chamber, casing top is air-purifying chamber, lower box arranges ash bucket, in filter chamber, fill filter bag, filter bag upper end open communicates with air-purifying chamber, the in-built pure qi (oxygen) air channel to filter bag upper end open winding-up pure qi (oxygen) of air-purifying chamber, the position, filter chamber of casing is provided with air inlet, the air-purifying chamber position of casing is provided with air outlet, it is characterized in that: air inlet is connected with the flue gas air channel in filtering area, the two side shield tops in flue gas air channel are the deflector form that makes top, flue gas air channel and filtering area top UNICOM, porous spoiler is set in flue gas air channel.
In the bottom of damper, also need to arrange the splayed deflector that protection is not worn near the filter bag of baffle area.
Four jiaos of employing arc plate forms of box house.
Casing is withstand voltage ± 16000Pa under, reinforcement is set inside and outside casing.
Ash bucket angle ≯ 45 °.
Nitrogen fluidisation distribution apparatus is set in ash bucket.
Explosion release valve is set on casing.
Described explosion release valve comprises that clamper and diaphragm form first explosion relief door, and diaphragm arrangement is in clamper.
At the second sect that also configuration can automatically be closed after casing pressure release, first explosion relief door outside.
The present invention is rational in infrastructure, can directly process the inflammable and explosive bituminous coal powder of high concentration, and equipment resistance is low, and pure qi (oxygen) emission effect is higher than environmental protection standard, and the consumable accessory life-span, long maintenance workload was little, possesses necessary explosion-proof venting of dust explosion measure.Meet safe, the continuous and reliability service requirement of negative pressure system completely, the rate of recovery is high, nuisanceless, corrosion-free, fault is low and energy consumption is low.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the lateral plan of Fig. 1.
Fig. 3 is the structural representation of explosion release valve.
The specific embodiment
A kind of explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal, comprise casing 1, casing middle part is filter chamber 2, casing top is air-purifying chamber 3, lower box arranges ash bucket 4, in filter chamber, fill filter bag 5, filter bag upper end open communicates with air-purifying chamber, the in-built pure qi (oxygen) air channel to filter bag upper end open winding-up pure qi (oxygen) of air-purifying chamber, the position, filter chamber of casing is provided with air inlet 6, the air-purifying chamber position of casing is provided with air outlet 7, air inlet is connected with the flue gas air channel in filtering area, the two side shield tops in flue gas air channel are the deflector form that makes top, flue gas air channel and filtering area top UNICOM, porous spoiler is set in flue gas air channel.
In the bottom of damper, also need to arrange the splayed deflector that protection is not worn near the filter bag of baffle area.
Four jiaos of employing arc plate forms of box house.
Casing is withstand voltage ± 16000Pa under, reinforcement 8 is set inside and outside casing.Because casing is square structure, withstand voltage not as round box, reinforcement is mainly configured in casing outside, and box house only has the crossbeam of anti-integration, and the thickness You Mou U.S. software of the density of reinforcement, material size and boxboard calculates and implementation condition determines.
Ash bucket angle ≯ 45 °, arrange nitrogen fluidisation distribution apparatus 9 in ash bucket.Ash bucket inside can not store coal dust for a long time, from security standpoint, also requires to unload continuously ash, therefore unloads ash control and takes to unload continuously ash system.Keep unloading ash smooth, except guaranteeing that ash bucket angle is little, also will configure nitrogen fluidized plate, by after the accumulated powder fluidisation in ash bucket, the mobility of coal dust strengthens, and makes to unload ash smooth.It is dim that indifferent gas physical efficiency prevents that the coal dust of piling up from producing, and while overhauling, with it, carries out inerting ash bucket atmosphere simultaneously, improves security performance.
Explosion release valve 10 is set on casing.
Described explosion release valve comprises that clamper 11 and diaphragm 12 form first explosion relief door, and diaphragm arrangement is in clamper.At the second sect 13 that also configuration can automatically be closed after casing pressure release, first explosion relief door outside.
Explosion release valve device, is to form first explosion relief door by fine finishining clamper and diaphragm, and this air leak rate of air curtain is zero, the 16000Pa of resistance to negative pressure, and the venting of dust explosion of resistance to pressure-fired, meets the requirement of equipment venting of dust explosion completely.But for negative-pressure operation system, also need on the basis of the above to configure the second sect, after casing pressure release, can automatically close, prevent that air penetration from causing blast again.
Twice valve is integrated, and its function is: when negative pressure 16000Pa is following, valve is in closed condition, Open valve pressure release automatically under pressure-fired, and valve-closing, can prevent that air from again infiltrating and setting off an explosion subsequently.This valve is suitable for negative pressure operating condition.
The present invention only arranges exhaust gases passes in filtration zone, make space enough large, make high speed flue gas in this region, discharge to greatest extent its kinetic energy, the baffle plate of flue both sides arranges half simultaneously, its top and filtering area UNICOM, be upwards induced to flue gas in filter bag district and from top to bottom filter, because deashing air-flow and filtered airflow are with down, having strengthened ash-removal effect, is that equipment resistance is in lower state.
Pure qi (oxygen) air channel and air outlet are all arranged in air-purifying chamber, avoid causing casing in boxboard to be under pressure because accident or equipment instantaneous pressure are poor or pulling force excessive, cause boxboard to be out of shape or drawing crack.Otherwise occur that this trouble hunting danger is very high, a little Mars can lead to fire, therefore the preparation amount before maintenance is very large.
Porous detention plate and smoke deflector are set in flue gas air channel, and the detention plate that is wherein located at casing middle part can be eliminated most of flue gas dynamic pressure, hold back 80% coal dust, and arranges that the powder in ash bucket is even before and after making to enter.Otherwise because the powder in ash bucket is irregular, cause a part of filter bag to be flowed or blow over and cover completely by coal dust, make after its carbonization damaged.The plate of detention simultaneously must be to require perforate according to certain distribution, and the detention plate of not perforate can make dynamic pressure flue gas its local generation compared with maelstrom, makes the bag of this region filter bag, produce collision at the end and gall filter bag.Facts have proved that these technical measures are very necessary.
For filtering ultra-fine bituminous coal powder, in the bottom of damper, also need facility deflector, " splayed " arranges, and can effectively protect the filter bag near baffle area not to be worn.
Smoke deflector is exactly the deep bead of exhaust gases passes both sides, and this plate is not taked full width setting, reserves corresponding space, and flue gas will upwards enter filter bag region along both sides deep bead.Make to filter flue gas from top to bottom, synchronize with deashing air-flow, strengthened ash-removal effect.
Four jiaos of round and smooth processing of casing and without any accumulated powder platform, four jiaos of equipment box adopt arc plates, avoid static discharge.Interior is smooth, supporting traverse top adopts triangle, is not easy to deposit coal dust.
The present invention can Automatic Control, and the operation of bag filter adopts Automatic Control, comprise detection to important duty parameter, according to the spacing value of detected parameters, control its pulse valve deashing, unloading valve unload ash, overload alarm and fault alarm.The automatic control of round Realization equipment.
Claims (1)
1. an explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal, comprise casing, casing middle part is filter chamber, casing top is air-purifying chamber, lower box arranges ash bucket, in filter chamber, fill filter bag, filter bag upper end open communicates with air-purifying chamber, the in-built pure qi (oxygen) air channel to filter bag upper end open winding-up pure qi (oxygen) of air-purifying chamber, the position, filter chamber of casing is provided with air inlet, the air-purifying chamber position of casing is provided with air outlet, it is characterized in that: air inlet is connected with the flue gas air channel in filtering area, the two side shield tops in flue gas air channel are the deflector form that makes top, flue gas air channel and filtering area top UNICOM, porous spoiler is set in flue gas air channel, in the bottom of damper, also need to arrange the splayed deflector that protection is not worn near the filter bag of baffle area, four jiaos of employing arc plate forms of box house, casing is withstand voltage ± 16000Pa under, reinforcement is set inside and outside casing, ash bucket angle is not more than 45 °, nitrogen fluidisation distribution apparatus is set in ash bucket, explosion release valve is set on casing, described explosion release valve comprises that clamper and diaphragm form first explosion relief door, and diaphragm arrangement is in clamper, at the second sect that also configuration can automatically be closed after casing pressure release, first explosion relief door outside, smoke deflector is exactly the deep bead of exhaust gases passes both sides, and this plate is not taked full width setting, reserves corresponding space, and flue gas upwards enters filter bag region along both sides deep bead, makes to filter flue gas from top to bottom, synchronizes with deashing air-flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110351195.0A CN102380265B (en) | 2011-11-09 | 2011-11-09 | Explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal |
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|---|---|---|---|
| CN201110351195.0A CN102380265B (en) | 2011-11-09 | 2011-11-09 | Explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal |
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| CN102380265A CN102380265A (en) | 2012-03-21 |
| CN102380265B true CN102380265B (en) | 2014-03-12 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463885A (en) * | 2013-10-05 | 2013-12-25 | 南京福昌环保有限公司 | Environment-friendly dust removal device with explosion venting function |
| CN103821551B (en) * | 2014-02-21 | 2016-05-11 | 河南省煤田地质局二队 | A kind of coal bed gas well air force reservoir reconstruction decompression explosion-proof dust arrester |
| CN105194944A (en) * | 2014-06-27 | 2015-12-30 | 沈阳铝镁设计研究院有限公司 | Reverse blowing type dust remover |
| CN111359350B (en) * | 2020-02-18 | 2021-12-10 | 北京石油化工学院 | Dust collection device with explosion-proof explosion control function and dust collection vehicle |
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| DE3415296A1 (en) * | 1984-04-24 | 1985-10-31 | Rolf Dipl.-Ing. 5204 Lohmar Jipp | Filter reactor for the purification of flue gases |
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| CN102380265A (en) | 2012-03-21 |
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Inventor after: Huang Bin Inventor after: Wu Yuanyuan Inventor after: Chen Gang Inventor after: Xu Hai Inventor before: Huang Bin Inventor before: Wu Yuanyuan Inventor before: Chen Gang |
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Denomination of invention: Explosion-proof explosion-release full-automatic bag-type filtering device for pulverized bituminous coal Effective date of registration: 20200424 Granted publication date: 20140312 Pledgee: Bank of China Limited by Share Ltd. Qidong branch Pledgor: JIANGSU TIANYU PETROCHEMICAL METALLURGY EQUIPMENT Co.,Ltd. Registration number: Y2020980001756 |
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Date of cancellation: 20220728 Granted publication date: 20140312 Pledgee: Bank of China Limited by Share Ltd. Qidong branch Pledgor: JIANGSU TIANYU PETROCHEMICAL METALLURGY EQUIPMENT Co.,Ltd. Registration number: Y2020980001756 |