CN110237630A - A kind of big liquid-gas ratio multilayer step dedusting demisting packed tower - Google Patents
A kind of big liquid-gas ratio multilayer step dedusting demisting packed tower Download PDFInfo
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- B01D50/10—Combinations of devices covered by groups B01D45/00, B01D46/00 and B01D47/00
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Abstract
The present invention relates to a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower, including tower body, bottom is fixed by the bracket on ground, being equipped with exhaust outlet at the top of tower body, and bottom is equipped with leakage fluid dram, and the lower end of side wall is equipped with air inlet；Support frame, is equipped with multiple, and between the upper and lower every being installed on inside tower body, and is respectively positioned on above air inlet；Packing layer is equipped with multilayer, and is layed in support frame top respectively, and the filler diameter in multiple filling layers layer is sequentially reduced from bottom to top；Spray assemblies are respectively arranged at the top of remaining packing layer in addition to top layer；Sedimentation basin, leakage fluid dram extend downward into sedimentation basin.Advantage: the purification of ash-laden gas is realized by multilayer step packed tower substep, slightly imitates filtering by lowest level packing layer, resistance is small, anti-clogging；By middle layer packing layer secondary filter, inertial collision, interception and water film dedusting effect are enhanced, is filtered by top layer's packing layer, is effectively removed dust-laden water mists, realize ultra-clean discharge.
Description
Technical field
The invention belongs to high temperature wet flue gas Treatment process field, in particular to a kind of big liquid-gas ratio multilayer step dedusting demisting
Packed tower.
Background technique
Mainly have about wet dedusting technology: spray column, sieve-plate tower (foaming tower), water dust scrubber, is filled out wet dust collector
Expect tower, venturi scrubber, wet electrical dust precipitator.Spray column, wet dust collector, sieve-plate tower, water dust scrubber low efficiency, can not
Meet emission request；The venturi scrubber pressure loss is very big, and ontology is big due to consuming energy usually in 5000-10000Pa, at present
Belong to filtering technique.Wet electrical dust precipitator investment is big, and there are fouling, etching problem, maintenance management level requirement are high.
In addition, dehydration is the key that guarantee wet dust removal effect in wet dedusting technology.Currently used dehydrating demisting dress
Be equipped with: corrugated plating, spiral board, cyclone demister, mesh mist eliminator, demisting efficiency are low.Therefore, up to the present, flue gas is " de-
It is white " it is still the problem not solved.
However, still inevitably using wet dedusting technology for wet flue gas purification in clarifying smoke field.Therefore,
The innovative research and development for carrying out high-efficient wet-type dedusting technology, realize that high-humidity gas fume deep purifying and white haze emission reduction are necessary.
Packed tower has many advantages, such as that the simple small, structure of investment, convenient operating maintenance, efficiency of dust collection are higher (>=95%).Its
Efficiently the main reason for is that have huge contact surface area, big hundred times of contact surface area of packed tower than water dust scrubber.But
At present customary filler tower the problem is that:
1) pressure loss is higher (1500-3000Pa), and filler thickness is usually more than 4m；
2) cleaning function is poor, and liquid-gas ratio design value is 1L/m3Left and right；
3) single layer single gauge filler limits the further promotion of dust removing effects；
4) costs and poor dehydration results especially discharged to water mist cause the fine dust being dissolved in water mist to discharge.
It is by traditional single layer packing modification is multiple filling layers that packed tower dedusting, which proposes efficacious prescriptions method, such as disclosed " tail gas spray
Gas wash tower " (CN201120111566.3) patented technology, the technology can effectively improve efficiency of dust collection using multiple filling layers layer, but
Lacking demister causes humidity of flue gas big.
Or packed tower is connected with other high-efficiency dust removers, a kind of such as disclosed " dedusting of organic fertilizer production and de-
Packed tower and venturi scrubber are combined into an efficient joint by smelly device " (CN03204443.7) patented technology, the technology
Body can be such that efficiency of dust collection significantly improves.Although packed tower can by with other dedusters are compound proposes effect, lead to dust pelletizing system
Structure is complicated, resistance increases, energy consumption increases, investment improves.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of big liquid-gas ratio multilayer step dedusting demisting packed towers, effectively
The defect for overcoming the prior art.
The technical scheme to solve the above technical problems is that a kind of big liquid-gas ratio multilayer step dedusting demisting filler
Tower, including tower body, the tubular structure that above-mentioned tower body is vertically arranged, bottom are fixed by the bracket on ground, above-mentioned tower body
Top is equipped with exhaust outlet, and bottom is equipped with leakage fluid dram, and the lower end of side wall is equipped with air inlet；Support frame, above-mentioned support frame are equipped with more
It is a, and respectively between the upper and lower every be installed on inside above-mentioned tower body, and be respectively positioned on the top of above-mentioned air inlet；Packing layer, it is above-mentioned to fill out
The bed of material is equipped with multilayer, and is layed in each above-mentioned support frame top respectively, the filler diameter in the above-mentioned packing layer of multilayer from lower and
On be sequentially reduced；Spray assemblies, above-mentioned spray assemblies are equipped with multiple groups, and are respectively arranged on remaining every layer in addition to top layer
The top of packing layer is stated, above-mentioned spray assemblies pass through piping connection water source respectively；Sedimentation basin, above-mentioned sedimentation basin are set to above-mentioned tower
Below body, above-mentioned leakage fluid dram is extended downward into above-mentioned sedimentation basin.
The beneficial effects of the present invention are: reasonable in design, the purification of ash-laden gas is by multilayer step packed tower substep
It realizes, slightly imitates filtering by lowest level packing layer, resistance is small, anti-clogging, while having inlet velocity rectified action；By centre
Layer packing layer secondary filter increases filler surface product step by step, enhances inertial collision, interception and water film dedusting effect, warp step by step
The filtering of top layer's packing layer is crossed, dust-laden water mists is effectively removed, realizes ultra-clean discharge.
Based on the above technical solution, the present invention can also be improved as follows.
It further, further include rinsing module, above-mentioned rinsing module is set to the top of the above-mentioned packing layer of top layer, and leads to
Piping connection water source is crossed, and is equipped with control valve on the pipeline.
Beneficial effect using above-mentioned further scheme is can effectively to rinse block clearing to top layer's packing layer, it is ensured that its
Good service performance, and ensure the good purification and flowing of flue gas.
Further, main line, every group of above-mentioned spray assemblies and above-mentioned rinsing module point are fixed with outside above-mentioned tower body side wall
It is not connected to and in communication with by the pipeline through above-mentioned tower body side wall with above-mentioned main line, above-mentioned main line is equipped with water inlet, should
For water inlet by piping connection water source, the pipeline that above-mentioned rinsing module is connected to above-mentioned main line is equipped with above-mentioned control valve.
Beneficial effect using above-mentioned further scheme is that pipeline arrangement is simple, and overall structure is more compact.
Further, every group of above-mentioned spray assemblies include multiple atomizers, and multiple above-mentioned atomizers are uniformly distributed in
The top of corresponding every layer of above-mentioned packing layer, and be connected to and in communication with commonly through a root canal road with above-mentioned main line.
Beneficial effect using above-mentioned further scheme be it is reasonable in design, pipeline arrangement is simple, easy to use, the later period
Maintenance difficulties reduce.
Further, above-mentioned rinsing module includes multiple flooding nozzles, and multiple above-mentioned flooding nozzles are commonly through a root canal road
It is connected to and in communication with above-mentioned main line.
Beneficial effect using above-mentioned further scheme be it is reasonable in design, pipeline arrangement is simple, easy to use, the later period
Maintenance difficulties reduce.
Further, there are three above-mentioned support frame is set, corresponding above-mentioned packing layer is equipped with three layers, in three layers of above-mentioned packing layer
The diameter of filler is respectively φ a, φ b and φ C from bottom to top, wherein φ a=80-100mm, φ b=45-55mm, φ C=25-
30mm。
Beneficial effect using above-mentioned further scheme is that design is reasonable, filler size adaptation, and gas cleaning effect is good.
Further, the filler in above-mentioned packing layer is Raschig ring filler, Intalox metal tower packing, ladder ring packing or Pall ring
One or more combinations of filler.
Beneficial effect using above-mentioned further scheme is that flue gas endoparticle filter effect is good.
Further, the top of the pool wall of above-mentioned sedimentation basin is equipped with overflow port, the outer wall of above-mentioned sedimentation basin be equipped with it is above-mentioned
The overflow launder that overflow port is connected to and in communication with, above-mentioned sedimentation basin side wall lower ends, which are equipped with, is connected to its internal sewage draining exit, above-mentioned sewage draining exit
Equipped with blowdown valve.
Beneficial effect using above-mentioned further scheme is conducive to the good precipitating of sedimentation basin and impurity blowdown.
Further, the bottom of above-mentioned tower body is the funnel structure that cross-sectional area is gradually reduced from top to bottom, the infundibular ganglion
The lower end of structure is equipped with above-mentioned leakage fluid dram.
Beneficial effect using above-mentioned further scheme is collected conducive to the confluence of sewage in tower body, is avoided sewage and is flown
It splashes.
Further, above-mentioned support frame is horizontally disposed sieve plate.
Beneficial effect using above-mentioned further scheme is well passing through conducive to flue gas, and filler is made to be laid with rule
It is whole.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of big liquid-gas ratio multilayer step dedusting demisting packed tower of the invention.
In attached drawing, parts list represented by the reference numerals are as follows:
1, tower body, 2, support frame, 3, packing layer, 4, spray assemblies, 5, sedimentation basin, 6, rinsing module, 7, main line, 11,
Exhaust outlet, 12, leakage fluid dram, 13, air inlet, 14, Ta Gai, 51, overflow launder, 52, sewage draining exit, 53, blowdown valve, 61, control valve.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Embodiment: as shown in Figure 1, the big liquid-gas ratio multilayer step dedusting demisting packed tower of the present embodiment includes tower body 1, on
The tubular structure that tower body 1 is vertically arranged is stated, bottom is fixed by the bracket on ground, and exhaust is equipped at the top of above-mentioned tower body 1
Mouth 11, bottom are equipped with leakage fluid dram 12, and the lower end of side wall is equipped with air inlet 13；Support frame 2, above-mentioned support frame 2 be equipped with it is multiple, and
Respectively between the upper and lower every be installed on inside above-mentioned tower body 1, and be respectively positioned on the top of above-mentioned air inlet 13；Packing layer 3, above-mentioned filler
Layer 3 is equipped with multilayer, and is layed in each 2 top of above-mentioned support frame respectively, the filler diameter in the above-mentioned packing layer 3 of multilayer from lower and
On be sequentially reduced；Spray assemblies 4, above-mentioned spray assemblies 4 are equipped with multiple groups, and are respectively arranged at remaining every layer in addition to top layer
The top of above-mentioned packing layer 3, above-mentioned spray assemblies 4 pass through piping connection water source respectively；Sedimentation basin 5, above-mentioned sedimentation basin 5 are set to
Above-mentioned 1 lower section of tower body, above-mentioned leakage fluid dram 12 extend downward into above-mentioned sedimentation basin 5.
The working principle of entire tower is as follows:
High-temperature flue gas enters in tower body 1 through air inlet 13, and flows up, and passes through every layer of packing layer in flow process step by step
3, after every layer of packing layer 3 absorbs, eventually by 11 row of exhaust outlet in the external world, in the whole process, every group of above-mentioned spray assemblies 4
To the flue gas atomized water spray by this layer of packing layer 3, when by lowest level filler diameter maximum packing layer 3, which is filled out
3 resistance of the bed of material is small, anti-clogging, while having inlet velocity rectified action, can play good coarse filtration effect, have anti-clogging,
Cooling, enhancing water mist sprinkling catch dirt effect；In 3 secondary filter of packing layer Jing Guo middle layer, the filler surface that increases step by step
Product enhances inertial collision, interception and water film dedusting effect, and when by top layer's packing layer 3, this layer of packing layer 3 can be removed
Dust-laden water mists in flue gas therethrough, the sewage that final spray agglomerates in the process converges to the leakage fluid dram 12 of tower body 1, and is discharged into
It is precipitated in sedimentation basin 5, several processing of impurity after precipitating precipitate the comparison clear water recycling and reusing of generation；Entire big liquid
Gas is greater than 99% than the flue gas ash removal efficiency of multilayer step dedusting demisting packed tower, and is suitable for boiler smoke dedusting demisting
The ultra-clean discharge of efficient low-resistance, entire tower investment are small, at low cost；Liquid-gas ratio is big, and anti-clogging, cooling, water mist sprinkling are caught dirt effect and taken off
It removes；It is dropped and is hindered using thin layer filler, proposed effect using the more specification fillers of multilayer, plural serial stage dedusting demisting is realized, so that entirely
Processing finally can be realized the ultra-clean discharge after fume treatment.
As a preferred embodiment, further including rinsing module 6, above-mentioned rinsing module 6 is set to the upper of top layer
It states the top of packing layer 3, and by piping connection water source, and is equipped with control valve 61 on the pipeline, it can be with by control valve 61
Control water source and convey flushing water to rinsing module 6, thus when top layer's packing layer 3 blocks, can effectively to its into
Row rinses, or is periodically rinsed to the packing layer of top layer 3, can keep preferable performance continued operation.
As a preferred embodiment, being fixed with main line 7, every group of above-mentioned spray assemblies 4 outside above-mentioned 1 side wall of tower body
And above-mentioned rinsing module 6 is connected to and in communication with by the pipeline through above-mentioned 1 side wall of tower body with above-mentioned main line 7 respectively, it is above-mentioned
Main line 7 is equipped with water inlet, which is connected to by piping connection water source, above-mentioned rinsing module 6 with above-mentioned main line 7
Pipeline is equipped with above-mentioned control valve 61, which avoids complicated pipeline arrangement, drop so that pipeline arrangement is fairly simple
The difficulty of low later maintenance maintenance.
Water pump is equipped in above-mentioned water source, the output end of the water pump is connected to by pipeline with the water inlet of main line 7.
It is to be mentioned that: the comparison clear water source after above-mentioned sedimentation basin 5 precipitates can be passed directly into conduct in water source
Spray-water can also be passed through in water source as spray-water after water filter filters.
As a preferred embodiment, every group of above-mentioned spray assemblies 4 include multiple atomizers, multiple above-mentioned mists
Change the top that nozzle is uniformly distributed in corresponding every layer of above-mentioned packing layer 3, and connects commonly through a root canal road and above-mentioned main line 7
It connects and is connected to, result is simple, and atomizing effect is good, can effectively cover the flue gas flowed through above every layer of packing layer 3, make in flue gas
The particle contained comes into full contact with water mist, plays preferable heat recovery and particulate matter cohesion filter effect.
As a preferred embodiment, above-mentioned rinsing module 6 includes multiple flooding nozzles, multiple above-mentioned flooding nozzles
It is connected to and in communication with commonly through a root canal road and above-mentioned main line 7, the spray regime of multiple flooding nozzles can cover entirely most
3 upper surface of packing layer on upper layer, structure design is simple, convenient for the good flushing block clearing of packing layer 3.
As a preferred embodiment, corresponding above-mentioned packing layer 3 is equipped with three layers there are three above-mentioned support frame 2 sets,
The diameter of filler in three layers of above-mentioned packing layer 3 is respectively φ a, φ b and φ C from bottom to top, wherein φ a=80-100mm, φ
B=45-55mm, φ C=25-30mm, filler size is more reasonable in packing layer 3, and moderate number, can satisfy high temperature cigarette
Gas is effectively treated, and the purpose of ultra-clean discharge.
As a preferred embodiment, the filler in above-mentioned packing layer 3 be Raschig ring filler, Intalox metal tower packing,
One or more combinations of ladder ring packing or Pall ring filler, smoke filtering effect are preferable.
In order to facilitate every layer of packing layer 3 of replacement, the position that each 2 upper end of support frame is corresponded on 1 side wall of tower body is provided with
For the feeding notch that filler takes out, and it is equipped with feeding port above feeding notch, is punished in each notch and each feeding port
An Zhuan not be dismountable and it be used to open or seal its bin gate of closing, to facilitate the replacement of filler.
It should be understood that packing layer 3 is all taken out, flushing is passed through when needing to clear up every layer of support frame 2
Component 6 carries out comprehensive flushing.
As a preferred embodiment, the top of the pool wall of above-mentioned sedimentation basin 5 is equipped with overflow port, above-mentioned sedimentation basin 5
Outer wall be equipped with the overflow launder 51 that is connected to and in communication with above-mentioned overflow port, above-mentioned 5 side wall lower ends of sedimentation basin, which are equipped with, to be connected in it
The sewage draining exit 52 in portion, above-mentioned sewage draining exit 52 be equipped with blowdown valve 53, the design be conducive to sedimentation basin 5 it is good precipitate and limpid water by
The collection of overflow launder 51 recycles, and when needing to exclude impurity in sedimentation basin 5, opens blowdown valve 53 and excludes, entire to design
Compare rationally, is conducive to blowdown and clear water is collected.
As a preferred embodiment, the bottom of above-mentioned tower body 1 is what cross-sectional area was gradually reduced from top to bottom
Funnel structure, the lower end of the funnel structure are equipped with above-mentioned leakage fluid dram 12, which is conducive to bilge well funnel structure and gathers remittance
After stream in good inflow sedimentation basin 5, also, entire leakage fluid dram 12 should be immersed in the middle part of liquid level in sedimentation basin 5 hereinafter, anti-
Only sewage enters the interior disturbance caused to existing sewage in sedimentation basin 5 by a relatively large margin of sedimentation basin 5, keeps its sedimentation effect more preferable.
As a preferred embodiment, above-mentioned support frame 2 is horizontally disposed sieve plate, outer rim and above-mentioned tower body
1 inner wall contact, is conducive to flue gas smooth flow and passes through, specifically, corresponding to each above-mentioned support frame 2 on 1 inner wall of above-mentioned tower body
Position it is evenly spaced respectively be mounted with multiple supporting lugs, support frame 2 is placed on corresponding multiple supporting lugs, support
2 shape of frame can be to be completely attached to or close with the matched shape of tower body 1, outer rim and 1 inner wall of tower body.
It should be noted that: the open top of above-mentioned tower body 1, and tower lid 14 is removably installed in open-mouth,
Through exhaust outlet 11, tower lid 14 and 1 split-type design of tower body is equipped on the tower lid 14, so that can be convenient for after tower lid 14 is removed
Packing layer 3 and support frame 2 inside tower body 1 convenient can take out from 1 upper end open-mouth of tower body.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower characterized by comprising
Tower body (1), the tubular structure that the tower body (1) is vertically arranged, bottom are fixed by the bracket on ground, the tower
Exhaust outlet (11) are equipped at the top of body (1), bottom is equipped with leakage fluid dram (12), and the lower end of side wall is equipped with air inlet (13)；
Support frame (2), support frame as described above (2) be equipped with it is multiple, and respectively between the upper and lower every to be installed on the tower body (1) internal, and
It is respectively positioned on the top of the air inlet；
Packing layer (3), described filler layer (3) is equipped with multilayer, and is layed in each support frame as described above (2) top, multilayer institute respectively
The filler diameter stated in packing layer (3) is sequentially reduced from bottom to top；
Spray assemblies (4), the spray assemblies (4) are equipped with multiple groups, and are respectively arranged at remaining every layer in addition to top layer institute
The top of packing layer (3) is stated, the spray assemblies (4) pass through piping connection water source respectively；
Sedimentation basin (5), the sedimentation basin (5) are set to below the tower body (1), and the leakage fluid dram extends downward into the precipitating
In pond (5).
2. a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower according to claim 1, it is characterised in that: further include
Rinsing module (6), the rinsing module (6) is set to the top of the described filler layer (3) of top layer, and passes through piping connection water
Source, and control valve (61) are equipped on the pipeline.
3. a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower according to claim 2, it is characterised in that: the tower
It is fixed with main line (7) outside body (1) side wall, spray assemblies described in every group (4) and the rinsing module (6) are respectively by running through
The pipeline of tower body (1) side wall is connected to and in communication with the main line (7), and the main line (7) is equipped with water inlet, should be into
By piping connection water source, the pipeline that the rinsing module (6) is connected to the main line (7) is equipped with the control valve at the mouth of a river
(61)。
4. a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower according to claim 3, it is characterised in that: every group of institute
Stating spray assemblies (4) includes multiple atomizers, and multiple atomizers are uniformly distributed in corresponding every layer of filler
The top of layer (3), and be connected to and in communication with commonly through a root canal road and the main line (7).
5. a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower according to claim 3, it is characterised in that: the punching
Washing component (6) includes multiple flooding nozzles, and multiple flooding nozzles are connect commonly through a root canal road with the main line (7)
And it is connected to.
6. a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower according to claim 1, it is characterised in that: the branch
There are three support (2) is set, corresponding described filler layer (3) is equipped with three layers, and the diameter of the filler in three layers of described filler layer (3) is certainly
Lower and upper respectively φ a, φ b and φ C, wherein φ a=80-100mm, φ b=45-55mm, φ C=25-30mm.
7. a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower according to any one of claims 1 to 6, feature exist
In: the filler in described filler layer (3) is the one of Raschig ring filler, Intalox metal tower packing, ladder ring packing or Pall ring filler
Kind or a variety of combinations.
8. a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower according to any one of claims 1 to 6, feature exist
In: the top of the pool wall of the sedimentation basin (5) is equipped with overflow port, and the outer wall of the sedimentation basin (5) is equipped with and the overflow port
The overflow launder (51) being connected to and in communication with, sedimentation basin (5) side wall lower ends, which are equipped with, is connected to its internal sewage draining exit (52), the row
Dirty mouth (52) is equipped with blowdown valve (53).
9. a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower according to any one of claims 1 to 6, feature exist
In: the bottom of the tower body (1) is the funnel structure that cross-sectional area is gradually reduced from top to bottom, the lower end end of the funnel structure
Portion is equipped with the leakage fluid dram.
10. a kind of big liquid-gas ratio multilayer step dedusting demisting packed tower according to any one of claims 1 to 6, feature
Be: support frame as described above (2) is horizontally disposed sieve plate.
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|---|---|---|---|---|
| CN111939695A (en) * | 2020-06-18 | 2020-11-17 | 深圳市柏志兴环保科技有限公司 | Post-baking pretreatment cooling dust removal device |
| CN112452074A (en) * | 2020-10-28 | 2021-03-09 | 北京北方华创微电子装备有限公司 | Exhaust gas treatment device and semiconductor device |
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Application publication date: 20190917 |