CN204121925U - A kind of tail gas high-effective dust-removing washing device - Google Patents
A kind of tail gas high-effective dust-removing washing device Download PDFInfo
- Publication number
- CN204121925U CN204121925U CN201420513620.0U CN201420513620U CN204121925U CN 204121925 U CN204121925 U CN 204121925U CN 201420513620 U CN201420513620 U CN 201420513620U CN 204121925 U CN204121925 U CN 204121925U
- Authority
- CN
- China
- Prior art keywords
- wash
- cover body
- tail gas
- storage box
- water storage
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a kind of tail gas high-effective dust-removing washing device, comprise wash-out tower casing, upper end cover, wash-out tower sewage draining exit, part is positioned at gas approach pipeline and the water storage box sewage draining exit of wash-out tower casing, the cyclone dust that the import of gas approach pipeline connects, the internal helical blades that gas approach pipeline external wall of upper portion connects, the outward flange of internal helical blades and cover body close contact, the outside of cover body is connected with external spiral blade, the top of cover body is connected with demist impeller by axle, the lower end of cover body is connected with Liqiud-gas mixing device, Liqiud-gas mixing device foot is arranged on water storage box inwall, spray equipment is arranged on cover body outer wall, water storage box sewage draining exit is positioned at wash-out tower box house and divides and be connected on water storage box.The utility model is applicable to the dust that particle diameter is less than 5 μm, and dedusting, elution efficiency are high; Consume energy low, water consumption is little, wash-out dedusting eluent used is electrolytic seawater gained alkaline water, and alkaline water recycles between electrolytic cell and device.
Description
Technical field
The present invention relates to tail gas disposal technique field, particularly relate to a kind of tail gas high-effective dust-removing washing device.
Background technology
The tail gas that boat diesel engine is discharged is one of primary pollution source of marine atmosphere.Its harmful components mainly comprise CO, Nox, HC, SO2 ozone and particle matter.Wherein particle matter mainly contains the unburnt product of fuel oil, and diesel engine starting and underload time the fuel oil that produces or the particulate etc. of lubricating oil.Owing to being adsorbed with polycyclic aromatic hydrocarbons (PAH) in particulate hole, after being inhaled into human body, various respiratory tract disease can being caused, and have carcinogenic danger.So reducing smokescope is one of top priority of boat diesel engine smoke evacuation control.1997 International Maritime Organization (IMO) held newly-increased supplemental provisions of MARPOL73/78 pact in IMO general headquarters London, i.e. supplemental provisions VI " preventing boats and ships from causing atmosphere pollution rule ".The appearance of this rule, facilitates the appearance of the more strict local discharge standard of some developed countries and control plan.Marine main engine is generally fuel, particularly foreign-going ship with heavy oil is fuel mainly with poor residuum, and the average sulfur content of fuel oil is up to 2.7%, and therefore ship tail gas SO2 discharge is a large problem.Control SOx discharge method, can Low Sulfur Fuel Oil be selected, or from flue gas wash-out.The price of low-sulfur oil is high, and low-sulfur oil is different from the diesel engine mechanism of high-sulfur oils, and boats and ships need to transform, costly.The process of ship tail gas dedusting wash-out will be the prior development direction preventing ship tail gas atmosphere pollution.
Traditional dust collection method runs into a lot of problem in the middle of practical application, such as: the efficiency of dust collection of cyclone dust to low domain size distribution dust is too low, far away higher than dust concentration discharge standard; Although electrostatic precipitator efficiency of dust collection is very high, floor space and disposablely to have high input, and need very high explosion-proof performance; Sack cleaner resistance is large, and due to filtering material impact, service condition is limited.And the said equipment function singleness, dedusting can only cannot carry out wash-out process to tail gas.In recent years, wet dedusting technology obtains in the industry because its energy consumption is low, the scope of application is wide and applies more and more widely, but the dust efficiency of dust collection that most of hydrofilter is less than 5 μm for particle diameter is low.Although shaped Venturi dedusting wash-out equipment can reach compared with high efficiency of dust collection but energy consumption is large, and wash-out toxic gas efficiency is low.
Summary of the invention
The present invention is intended to solve the problem, and provides a kind of and is suitable for the tail gas high-effective dust-removing washing device that particle diameter is less than the dust of 5 μm, efficiency of dust collection is high, elution efficiency is high, it is low to consume energy, water consumption is little, wash-out dedusting is used eluent can recycle.
For achieving the above object, the technical solution adopted in the present invention is as follows: a kind of tail gas high-effective dust-removing washing device, comprise wash-out tower casing, be arranged on the upper end cover on wash-out tower casing, be arranged on the wash-out tower sewage draining exit of wash-out tower bottom half, be arranged on gas approach pipeline and water storage box sewage draining exit that wash-out tower bottom half is also partly positioned at wash-out tower casing, with the cyclone dust being positioned at the import of wash-out tower casing outside gas approach pipeline and being connected, with the internal helical blades being positioned at wash-out tower box house gas approach pipeline external wall of upper portion and being connected, the outward flange of internal helical blades and cover body close contact, the outside of cover body is connected with external spiral blade, the top of cover body is connected with demist impeller by axle, the lower end of cover body is connected with Liqiud-gas mixing device, Liqiud-gas mixing device foot is arranged on water storage box inwall, spray equipment is arranged on cover body outer wall, be positioned at above water storage box, water storage box sewage draining exit is positioned at wash-out tower box house and divides and be connected on water storage box.
Further, described upper end cover is provided with exhaust outlet; The outlet of described cyclone dust is connected with gas approach pipeline, and gas approach pipeline is cylinder.
Further, described spray equipment arranges four, distributes with cover body outer wall even circumferential.
Further, described demist impeller is multiple with the equally distributed blade composition with inclination angle of central shaft, and inclination angle is 15-30 degree.
Further, described internal helical blades and external spiral blade adopt single thread.
Further, in described water storage box, liquid level remains on 120mm ~ 150mm.
Further, described cover body closed upper part, cross section is tapered, and the upper weld of cover body has axle, for installing demist impeller, is provided with bearing between the wheel hub of demist impeller and axle.
Further, described Liqiud-gas mixing device is welded together by support bar by the multiple ring-type foils varied in size, and in horn-like, ring-type foil outward flange and the water storage box inwall of its foot weld together.
Further, the rotation direction of described internal helical blades is identical with the entrance rotation direction of tail gas in cyclone dust, contrary with the rotation direction of external spiral blade.
Further, the shower water that described spray equipment uses is circulation alkaline water, is prepared by electrolytic seawater.
Beneficial effect of the present invention is: be applicable to the dust that particle diameter is less than 5 μm, efficiency of dust collection is high; By carrying out twice wash-out process to tail gas, very high elution efficiency can be reached; Tail gas through passing through heat exchange with the high-temperature gas of access to plant when discharging, not only reduces the temperature entering gas and enhances elute effect, and the exhaust temperature of discharge is raised, reach more than dew point; Consume energy low, water consumption is little, wash-out dedusting eluent used is electrolytic seawater gained alkaline water, and alkaline water recycles between electrolytic cell and device.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the present invention is further elaborated.
Fig. 1 is structural representation of the present invention local;
Fig. 2 is A-A cross-sectional view of the present invention;
Fig. 3 is the structural representation of demist impeller of the present invention;
Fig. 4 is the structural representation of Liqiud-gas mixing device of the present invention.
in figure: 1, exhaust outlet, 2, bearing, 3, demist impeller, 4, external spiral blade, 5, cover body, 6, internal helical blades, 7, spray equipment, 8, Liqiud-gas mixing device, 9, water storage box, 10, water storage box sewage draining exit, 11, gas approach pipeline, 12, cyclone dust, 13, wash-out tower sewage draining exit, 14, eluent circulation pipe road junction, 15, liquid level, 16, wash-out tower casing, 17, demist impeller, 18, upper end cover, 19, centrifugal blower.
Specific embodiment
As Fig. 1, 2, 3, a kind of tail gas high-effective dust-removing washing device described in 4, comprise wash-out tower casing 16, be arranged on the upper end cover 18 on wash-out tower casing, be arranged on the wash-out tower sewage draining exit 13 of wash-out tower bottom half, be arranged on gas approach pipeline 11 and water storage box sewage draining exit 10 that wash-out tower bottom half is also partly positioned at wash-out tower casing, with the cyclone dust 12 being positioned at the import of wash-out tower casing outside gas approach pipeline 11 and being connected, with the internal helical blades 6 being positioned at wash-out tower box house gas approach pipeline external wall of upper portion and being connected, the outward flange of internal helical blades 6 and cover body 5 close contact, the outside of cover body 5 is connected with external spiral blade 4, the top of cover body 5 is connected with demist impeller 3 by axle, the lower end of cover body 5 is connected with Liqiud-gas mixing device 8, Liqiud-gas mixing device 8 foot is arranged on water storage box 9 inwall, spray equipment 7 is arranged on cover body 5 outer wall, be positioned at above water storage box 9, water storage box sewage draining exit 10 is positioned at wash-out tower box house and divides and be connected on water storage box 9.
Described upper end cover 18 is provided with exhaust outlet 1; The outlet of described cyclone dust 12 is connected with gas approach pipeline 11, and gas approach pipeline 11 is cylinder.
Described spray equipment 7 arranges four, distributes with cover body 5 outer wall even circumferential.
Described demist impeller 3 is multiple with the equally distributed blade composition with inclination angle of central shaft, and inclination angle is 15-30 degree.
Described cover body 5 closed upper part, cross section is tapered, and the upper weld of cover body 5 has axle, for installing demist impeller 3, is provided with bearing between the wheel hub of demist impeller and axle.
Described Liqiud-gas mixing device 8 is welded together by support bar by the multiple ring-type foils varied in size, and in horn-like, ring-type foil outward flange and water storage box 9 inwall of its foot weld together.
The rotation direction of described internal helical blades 6 is identical with the entrance rotation direction of tail gas in cyclone dust 12, contrary with the rotation direction of external spiral blade 4.
Described internal helical blades 6 and external spiral blade 4 adopt single thread or multi-head spiral.
In described water storage box 9, liquid level 15 remains on 120mm ~ 150mm.
The shower water that described spray equipment 7 uses is circulation alkaline water, is prepared by electrolytic seawater.
Under the effect of centrifugal blower 19, high-temperature tail gas is after the dust that cyclone dust 12 removes larger particles, spiral enters B chamber through A chamber, under the effect of the screw of self and the internal helical blades 6 in B chamber, make to increase near wall fluid velocity, the stirring strengthening boundary layer fluid can augmentation of heat transfer, and spiral helicine blade has larger surface area simultaneously also can increase heat-transfer effect.Tail gas is by the heat exchange with internal helical blades 6, external spiral blade 4, and temperature reduces.The spiral air flow in B chamber continues the impact liquid level 15 when arriving liquid level that flows downward, and evokes a large amount of sprays and foam, dust-contained airflow is fully contacted with liquid, enhance dedusting and elute effect.Tail gas continue screw enter Liqiud-gas mixing device 8, through formed between the annular metal sheet and support bar of Liqiud-gas mixing device 8 slight gap flow out.Due in Liqiud-gas mixing device 8, the screw of gas increases flow path and gas liquid interfacial area, enhances gas-liquid mixed, formed between annular metal sheet and support bar slight gap by air-flow refinement, make gas-liquid contact more abundant, good dedusting elute effect can be obtained.In Liqiud-gas mixing device 8, most of tail gas wash-out can be completed and remove the inexpungible fine dust of most of cyclone dust 12.The nozzle of air-flow spray equipment 7 after Liqiud-gas mixing device 8 overflows water storage box liquid level 15 sprays vaporific eluent to the further dedusting wash-out of tail gas.Air-flow continues upwards to flow into C chamber, collides, can realize gas-liquid separation with external spiral blade 4 under collision effect.External spiral blade 4 and cover body 5 by heating the tail gas after wash-out dedusting with the heat exchange of high-temperature tail gas in A chamber, can also make it temperature and reaching more than dew point.Tail gas stream is when external spiral blade 4, and due to the centrifugal action of screw, in air-flow, partial drop is thrown toward wash-out tower wall.Air-flow is through external spiral blade 4 spiral, the normal less parallel of airflow direction and 3, demist impeller, when striking demist impeller 3, again remove in air-flow under collision effect and remain drop, simultaneously due to the impact effect of air-flow, demist impeller 3 rotates, increase the collision probability of drop and demist impeller in air-flow, gas-liquid separation can be carried out well, the drop separated is attached to impeller surface, be thrown toward the inwall of wash-out tower casing 16 under the influence of centrifugal force, the tail gas after process is discharged through exhaust outlet 1.Like this through twice wash-out, third dedusting and twice gas-liquid separation, realize the discharge of tail gas or enter the harmful components such as the removing of other treating apparatus CO, Nox.
The dirt precipitation that the present invention produces in water storage box 9 is discharged by water storage box sewage draining exit 10.Eluent too much in water storage box 9 can spill into wash-out tower bottom.Wash-out tower bottom is also provided with wash-out tower sewage draining exit 13, is used for discharging bottom precipitation.Wash-out tower bottom sidewall is provided with eluent circulation pipe road junction 14 and is communicated with electrolytic cell (prior art, not shown in FIG.), and eluent recycles by pump.Can emit when washing lotion pH value is undesirable, refill seawater electrolysis and produce new alkaline water.For reducing the pressure loss of exhaust gas flow, in water storage box 9, liquid level 15 is unsuitable too high, is stabilized in 120mm ~ 150mm.The cleaning of internal helical blades 6, by arranging spray equipment to realize on cover body 5 top, is opened spray equipment when internal helical blades 6 dust is more and is rinsed.Internal helical blades 6 and external spiral blade 4 adopt single thread or multi-head spiral, and the present embodiment, for reducing gas flow resistance, adopts single thread.
Described just in order to the present invention is described above, be construed as the present invention and be not limited to above embodiment, meet the various variants of inventive concept all in protection scope of the present invention.
Claims (1)
1. a tail gas high-effective dust-removing washing device, comprise wash-out tower casing (16), be arranged on the upper end cover (18) on wash-out tower casing, be arranged on the wash-out tower sewage draining exit (13) of wash-out tower bottom half, it is characterized in that: also comprise and be arranged on wash-out tower bottom half and the gas approach pipeline (11) and the water storage box sewage draining exit (10) that are partly positioned at wash-out tower casing, with the cyclone dust (12) being positioned at outside gas approach pipeline (11) import of wash-out tower casing and being connected, with the internal helical blades (6) being positioned at wash-out tower box house gas approach pipeline external wall of upper portion and being connected, the outward flange of internal helical blades (6) and cover body (5) close contact, the outside of cover body (5) is connected with external spiral blade (4), the top of cover body (5) is connected with demist impeller (3) by axle, the lower end of cover body (5) is connected with Liqiud-gas mixing device (8), Liqiud-gas mixing device (8) foot is arranged on water storage box (9) inwall, spray equipment (7) is arranged on cover body (5) outer wall, be positioned at water storage box (9) top, water storage box sewage draining exit (10) is positioned at wash-out tower box house and divides and be connected on water storage box (9).
2. tail gas high-effective dust-removing washing device according to claim 1, is characterized in that: state on upper end cover (18) and be provided with exhaust outlet (1); The outlet of described cyclone dust (12) is connected with gas approach pipeline (11), and gas approach pipeline (11) is cylinder.
3. tail gas high-effective dust-removing washing device according to claim 1, is characterized in that: described spray equipment (7) arranges four, distributes with cover body (5) outer wall even circumferential.
4. tail gas high-effective dust-removing washing device according to claim 1, is characterized in that: described demist impeller (3) is for multiple with the equally distributed blade composition with inclination angle of central shaft, and inclination angle is 15-30 degree.
5. tail gas high-effective dust-removing washing device according to claim 1, it is characterized in that: described cover body (5) closed upper part, cross section is tapered, and the upper weld of cover body (5) has axle, for installing demist impeller (3), between the wheel hub of demist impeller and axle, bearing is installed.
6. tail gas high-effective dust-removing washing device according to claim 1, it is characterized in that: described Liqiud-gas mixing device (8) is welded together by support bar by the multiple ring-type foils varied in size, in horn-like, the ring-type foil outward flange of its foot and water storage box (9) inwall weld together.
7. tail gas high-effective dust-removing washing device according to claim 1, is characterized in that: the rotation direction of described internal helical blades (6) is identical with the entrance rotation direction of tail gas in cyclone dust (12), contrary with the rotation direction of external spiral blade (4).
8. tail gas high-effective dust-removing washing device according to claim 1, is characterized in that: described internal helical blades (6) and external spiral blade (4) adopt single thread.
9. tail gas high-effective dust-removing washing device according to claim 1, is characterized in that: described water storage box (9) interior liquid level (15) remains on 120mm ~ 150mm.
10. tail gas high-effective dust-removing washing device according to claim 1, is characterized in that: the shower water that described spray equipment (7) uses is circulation alkaline water, is prepared by electrolytic seawater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513620.0U CN204121925U (en) | 2014-09-09 | 2014-09-09 | A kind of tail gas high-effective dust-removing washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420513620.0U CN204121925U (en) | 2014-09-09 | 2014-09-09 | A kind of tail gas high-effective dust-removing washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204121925U true CN204121925U (en) | 2015-01-28 |
Family
ID=52378315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420513620.0U Withdrawn - After Issue CN204121925U (en) | 2014-09-09 | 2014-09-09 | A kind of tail gas high-effective dust-removing washing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204121925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368211A (en) * | 2014-09-09 | 2015-02-25 | 青岛海德威科技有限公司 | Efficient tail gas dedusting elution apparatus |
-
2014
- 2014-09-09 CN CN201420513620.0U patent/CN204121925U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368211A (en) * | 2014-09-09 | 2015-02-25 | 青岛海德威科技有限公司 | Efficient tail gas dedusting elution apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203123767U (en) | Composite type dust collector | |
| CN205042255U (en) | Multistage cyclone gas cleaning device of binocular and be equipped with device's desulfurization absorption tower | |
| CN202113736U (en) | Flue gas dust and mist removal device | |
| CN204996243U (en) | High -efficient flue gas desulfurization denitration dust pelletizing system | |
| CN205412677U (en) | Out of stock dust collector of flue gas desulfurization | |
| CN201101941Y (en) | Desulfurization and dust removal integrated device of fiberglass of industry coal-fired boiler | |
| CN104368211B (en) | A kind of tail gas high-effective dust-removing washing device | |
| CN2843595Y (en) | Multi-stage spiral-plate leaf desulfurizing dust collector | |
| CN204121925U (en) | A kind of tail gas high-effective dust-removing washing device | |
| CN204447618U (en) | A kind of purifier removing air pollutants | |
| CN201799202U (en) | Combined waste gas treatment device of tornado tower | |
| CN101716456A (en) | Double-stage desulfurizing and dust-removing equipment | |
| CN207445868U (en) | A kind of ultralow dedusting demister of eddy flow charged water spray | |
| CN207221664U (en) | A kind of stress tangent circle dynamic wave scrubbing dust-removing and desulfurizing integrated device | |
| CN201085993Y (en) | Turbulent flow type spray flue gas desulfurization column | |
| CN203342606U (en) | Vortex-type soot purifying process device | |
| CN205164410U (en) | Wet flue gas desulfurization dust removal combination tower | |
| CN205182496U (en) | Boiler flue gas dedusting and desulfurizing system | |
| CN204996244U (en) | Flue gas desulfurization is desulfurizing tower for system | |
| CN107511047A (en) | A kind of marine diesel in-line arrangement exhaust gas scrubber | |
| CN209752502U (en) | Novel efficient paint mist treatment device for cyclone tower | |
| CN208320297U (en) | A kind of ship tail gas scrubbing tower Whirl dust-collecting device | |
| CN203436984U (en) | Wet type dust collector | |
| CN206911101U (en) | A kind of absorption tower desulfurizing dust-collector device | |
| CN207056204U (en) | A kind of depth waste gas purification apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150128 Effective date of abandoning: 20160921 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |