CN102671499A - Parallel flow wet dust-collecting device and operational method thereof - Google Patents
Parallel flow wet dust-collecting device and operational method thereof Download PDFInfo
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- CN102671499A CN102671499A CN2011102176211A CN201110217621A CN102671499A CN 102671499 A CN102671499 A CN 102671499A CN 2011102176211 A CN2011102176211 A CN 2011102176211A CN 201110217621 A CN201110217621 A CN 201110217621A CN 102671499 A CN102671499 A CN 102671499A
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Abstract
The invention provides a parallel flow wet dust-collecting device and an operational method thereof. The dust-collecting device consists of a tower body, a whirlwind mixer, an air inlet pipe, a water inlet pipe, a liquid distributor, a water outlet pipe, a defogger, a circulating pump and a connecting pipeline. Air and washing water enter the whirlwind mixer in a mode of same direction and parallel flow, the air is fully mixed with and impacted by the washing water, the dust removed from the air is discharged from the bottom of the tower, and the clean air enters the defogger to remove the carried fogdrop and is discharged from an air outlet finally. The device has the characteristics of high dust-removing effect, small system resistance, no liquid flooding, small size of tower body and low water consumption, and can be applied to the process of washing and purifying various gases containing dust.
Description
Technical field
The present invention relates to a kind of gas purification technique, particularly a kind of industrial dusty gas and flow the wet dust removal device, belong to the dusty gas field of purification.
Background technology
Often need carry out purified treatment in fields such as chemical industry, pharmacy, food, exhaust-gas treatment, environmental protection to dusty gas.Present widely used cleaner has various tower wet scrubbers, cyclone dust collectors, gravitational dust collection, electric precipitation, bag-type dust etc.Tower wet scrubber often adopts the mode of gas-liquid counter current, and column plate is housed in tower, and what also have does not adorn column plate; Directly adopt the form of hollow-spraying-tower, though dust removing effects still can because the gas-liquid two-phase adverse current is passed through tower body; Gas flow rate is restricted in the tower, and the liquid flooding phenomenon appears in gas flow rate easily when big, particularly for the dust granule particle diameter that contains in the gas hour; Because the relative velocity of gas and water is less, impulsive force is big inadequately, and little dust granule can not effectively form larger particles and effectively separated; Thereby discharge with gas, do not reach due dust removing effects, and the tower body diameter that under certain tolerance, needs and highly all bigger.The separative efficiency of cyclone dust collectors and gravitational precipitator is lower, is usually used in the preparatory dedusting of dust removal process.The efficiency of dust collection of electric precipitation is high, but power consumption is big, and energy consumes high.The efficiency of dust collection of sack cleaner is higher, but SR is bigger.
The present invention is exactly the deficiency that will overcome existing dedusting technology, provides a kind of and stream wet dust removal device, reaches good dedusting effect, little, the no liquid flooding of SR, the body of the tower size is little, water consumption is few purpose.
Summary of the invention
The present invention provides a kind of and stream wet dust removal device and method of operating thereof, reaches good dedusting effect, little, the no liquid flooding of SR, the body of the tower size is little, water consumption is few purpose.
In the operating process of wet type dedusting, need the dust granule of being carried secretly in the dusty gas be separated with the high efficient of trying one's best, ensure the reliability service of subsequent handling.The present invention is in cylindrical-shaped tower; The cyclone type blender is set, and dusty gas to be clean gets into from the top of dust arrester, after washings distribute through liquid distribution trough; Get in the same way from the top and the gas of every layer of cyclone type blender; On every layer of cyclone type blender, dusty gas acutely contacts, collides, impacts with washings, and tiny dust granule is washed water and bonds together and become big dust granule; Enter together on the cyclone type blender of lower floor's reversed arrangement with washings and to contact once more, to wash, to reach abundant washing, purification effects.
The present invention is achieved in that
Dusty gas to be clean through air inlet pipe from and the tower body top of flowing the wet dust removal device get into dust arrester (accompanying drawing 1); Washings get into liquid distribution trough through the water inlet pipe that dust arrester top is provided with, dusty gas and together and flow into the cyclone type blender through the washings that disperse, on the cyclone type blender sharp impacts, fully mix, contact in the same way; Produce strong impact; On the cyclone type blender,, tiny dust granule is assembled through the effect of washings because the liquid film of the drop that bump produces, formation mixes with dust generation secondary in the gas; Become bigger dust granule, be convenient to sedimentation separation.On the cyclone type blender in the process of gas-liquid contact, the cyclone type blender guide vane that is provided with that tilts is sheared, is disperseed gas-liquid two-phase effectively, dusty gas and washings contact area is increased, the raising detersive efficiency.Got into demister by the gas of cleaning and separate the droplet of being carried secretly, discharge from exhaust outlet at last.
Adjacent two cyclone type blender installing spaces are 300～800mm, and two adjacent cyclone type blender both forward and reverse directions mix to be installed, and it is 4～8 that number is installed; So more help in the process of gas and washings co-flow, air water two is reverse flow shearing repeatedly mutually, impacts aggravation; Contact more abundant; Mix more evenly, realize the contact of sufficient gas-liquid, dusty gas is effectively purified.
150～350mm place is equipped with liquid distribution trough above each cyclone type blender, and the form of liquid distribution trough can be calandria, also can be sprinkle nozzle.
Washings get into the flow of each liquid distribution trough and confirm that according to the characteristic of dusty gas confirm that principle is up big and down small, adjacent two liquid distribution trough flow proportionals are 1: (0.4～0.8).
Of the present invention and stream wet dust removal device, efficiency of dust collection 95～99%, pressure is reduced to 120～450Pa; Gas-liquid is concurrent flow in the same way, empty tower gas velocity 5～12m/s, and no liquid flooding phenomenon takes place; Compare with the gas-liquid counter current gas wash tower; The tower body diameter reduces 40～70%, highly reduces by 35～65%, can save the material of a large amount of making scrubbing towers.Slurry recycles, and needs additional fresh water amount less, the conserve water resource, and power consumption is low.
Description of drawings
Accompanying drawing 1 also flows the wet dust removal device
1-tower body, 2-cyclone type blender, 3-air inlet pipe, 4-water inlet pipe, 5-liquid distribution trough, 6-sewage draining exit, 7-demister, 8-circulating pump, 9-liquid barrier, 10-valve, 11-escape pipe, 12-wire mesh demister, 13-gas outlet
The specific embodiment
Below in conjunction with accompanying drawing to the present invention and flow the wet dust removal device and introduce more in detail.
Certain dusty gas flow 60000Nm
3/ h contains the elemental sulfur dust in the gas, elemental sulfur content 80mg/Nm
3, particle diameter 3.2 μ m, operating pressure 0.55～0.6MPa.This gas that contains elemental sulfur gets into and flows the tower body 1 of wet dust removal device through the air inlet pipe 3 on dust arrester top; Diameter used and stream wet dust removal device tower body 1 is 1500mm; 4 cyclone type blenders 2 are set; The blade of first and the 3rd cyclone type blender is installed clockwise, and the blade of second and the 4th cyclone type blender is installed counterclockwise, installing space 600mm.On the top of every cyclone type blender calandria liquid distribution trough 5 is housed; Circulating pump 8 and control valve 10 are housed on circulating water line; Control gets into the flow of the water of liquid distribution trough 5 respectively, and the flow-control of water is up big and down small, and adjacent two liquid distribution trough flow proportionals are 1: 0.5.Leave enough liquid phase spaces at the bottom of the tower, contain elemental sulfur sewage to receive after the washing, and elemental sulfur is effectively separated with water, so that the recycle of water, sewage is discharged from sewage draining exit 6.
Fresh water gets into liquid distribution trough 5 from the water inlet pipe 4 on dust arrester top, after evenly distributing, sprays on the cyclone type blender 2, and water slug forms liquid film and dispersant liquid drop to the cyclone type blender, has strengthened the less turbulence that flows.On cyclone type blender 2, contain elemental sulfur gas and contact with washings repeated stock, mixing, bigger relative velocity is arranged; Can effectively break through the outer air film that is surrounded of elemental sulfur; Promote the gathering of simple substance sulphur granule, tiny elemental sulfur is grown up and is larger-diameter particle, is convenient to got off by water washing.In washing process, only need replenish a small amount of fresh water, the consumption of fresh water is 5～30% of a global cycle water consumption.
Get into demister 7 through dedusting washing back gas through the escape pipe at dedusting tower body middle part, on the inboard tower body of escape pipe 11, liquid barrier 9 is installed, prevent that current from being taken out of by gas.In demister, be provided with wire mesh demister 12, institute's droplets entrained in effective divided gas flow, further Purge gas, 13 discharges from gas outlet, demister top at last.Do not have clogging to take place in the dust removal process, efficiency of dust collection reaches 98.5%.
What should explain at last is: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has carried out detailed explanation with reference to the above embodiments to the present invention,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. and flow wet dust removal device and method of operating thereof, form by body of the tower, cyclone type blender, air inlet pipe, water inlet pipe, liquid distribution trough, outlet pipe, demister.It is characterized in that gas and washings fully mix, impact through cyclone type blender and washings with the mode that also flows in the same way, the dust that washs is discharged at the bottom of tower, and clean gas gets into the droplet that the demister separation is carried secretly, discharges from exhaust outlet at last.
2. as claimed in claim 1 and stream wet dust removal device is characterized in that cyclone type blender installing space is 300～800mm, and per two cyclone type blender both forward and reverse directions mix to be installed, and it is 4～8 that number is installed.
3. as claimed in claim 1 and stream wet dedusting tower is characterized in that 150～350mm place is equipped with liquid distribution trough above each cyclone type blender, and the form of liquid distribution trough can be calandria, also can be sprinkle nozzle.
4. as claimed in claim 3 and stream wet dust removal device liquid distribution trough, the flow-control that it is characterized in that water is up big and down small, adjacent two liquid distribution trough flow proportionals are 1: (0.4～0.8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102176211A CN102671499B (en) | 2011-08-01 | 2011-08-01 | Parallel flow wet dust-collecting device and operational method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102176211A CN102671499B (en) | 2011-08-01 | 2011-08-01 | Parallel flow wet dust-collecting device and operational method thereof |
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| Publication Number | Publication Date |
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| CN102671499A true CN102671499A (en) | 2012-09-19 |
| CN102671499B CN102671499B (en) | 2013-11-13 |
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| CN2011102176211A Expired - Fee Related CN102671499B (en) | 2011-08-01 | 2011-08-01 | Parallel flow wet dust-collecting device and operational method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434055Y (en) * | 2000-05-29 | 2001-06-13 | 李向文 | Smoke desulfuring dust-removing purifier for boiler |
| CN2448439Y (en) * | 2000-07-17 | 2001-09-19 | 孙伊凡 | Vortex flow-guiding desulfurization dust remover |
| CN2465785Y (en) * | 2001-01-05 | 2001-12-19 | 谭国雄 | Combined flue gas purifying device |
| CN2675236Y (en) * | 2004-02-26 | 2005-02-02 | 王宏军 | Eddy flow wet type desulfurizing dust collector |
-
2011
- 2011-08-01 CN CN2011102176211A patent/CN102671499B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2434055Y (en) * | 2000-05-29 | 2001-06-13 | 李向文 | Smoke desulfuring dust-removing purifier for boiler |
| CN2448439Y (en) * | 2000-07-17 | 2001-09-19 | 孙伊凡 | Vortex flow-guiding desulfurization dust remover |
| CN2465785Y (en) * | 2001-01-05 | 2001-12-19 | 谭国雄 | Combined flue gas purifying device |
| CN2675236Y (en) * | 2004-02-26 | 2005-02-02 | 王宏军 | Eddy flow wet type desulfurizing dust collector |
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| CN102671499B (en) | 2013-11-13 |
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Granted publication date: 20131113 Termination date: 20150801 |
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