CN201592028U - Anti-blocking defroster - Google Patents
Anti-blocking defroster Download PDFInfo
- Publication number
- CN201592028U CN201592028U CN200920234912XU CN200920234912U CN201592028U CN 201592028 U CN201592028 U CN 201592028U CN 200920234912X U CN200920234912X U CN 200920234912XU CN 200920234912 U CN200920234912 U CN 200920234912U CN 201592028 U CN201592028 U CN 201592028U
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- China
- Prior art keywords
- demister
- blade
- section
- flue gas
- defroster
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- 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.)
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Abstract
The utility model discloses an anti-blocking defroster, which comprises a defroster body and flushing devices, wherein the defroster body consists of blades and a frame, and the flushing devices are arranged at two ends of each blade. Each blade comprises an inlet section, a front baffle section, a rear baffle section and an outlet section and is an asymmetrical structure, an included angle between the inlet section and a flue gas direction ranges from 3 degrees to 15 degrees, the height of the inlet section is 0.15-0.25 of that of the blade, an included angel between the front baffle section and the flue gas direction ranges from 40 degrees to 65 degrees, the height of the front baffle section is 0.2-0.3 of that of the blade, and an included angle between the rear baffle section and the flue gas direction ranges from 25 degrees to 40 degrees. By aid of the specific design of geometrical shape of the blades, drop catch capacity of the defroster is distributed reasonably, and flushing capacity of the defroster can match with scaling degree well. The defroster can keep surfaces of the blades clean, prevent the blades from being scaled or blocked, and maintain normal operation of desulphurization systems.
Description
Technical field
The utility model relates to a kind of demister that wet method fume desulfurizing system (WFGD) or similar field are removed water smoke in the flue gas that is used for, and is the demister that a kind of general demister has stronger anti-blockage capability.
Background technology
Demister is mainly the deflection plate demister in known this field at present.Demister is contained in the top on absorption tower usually, and what also have is installed on the flue behind the absorption tower.Its effect is the moisture in the clean flue gas after the capture desulfurization, and pipeline and the equipment thereafter of protection as much as possible is not subjected to corrosion and stains.
Demister is made up of two parts usually: demister body and flusher.The demister body is that (common 20～50mm) assemble by jig, support etc., form the exhaust gases passes of some deviations between the blade with certain spacing by the blade of profile complications.When flue gas flow through, because the deviation of streamline, the drop that inertia is big hit on blade and is retained down, and gas inertia is less, can flow through from the flue of bending relatively swimmingly.Gas flow rate should just suit, and flow velocity is low excessively, and the inertia force of drop is less, removes fog effect and descends; The too high reentrainment that then can cause moisture of flow velocity, the same reduction removes fog effect.The effect of demister flusher is the dirt on the periodic flushing demister blade, keeps the blade surface cleaning, prevents blade fouling and obstruction, and the system that keeps normally moves.
At present the problem that exists be demister in the long-time running process, even guaranteed normal flushing, the obstruction fouling situation on the demister body still can compare seriously, causes the increase of desulphurization system resistance, chimney emission carries the adverse consequences of excessive slurries.This is because traditional demister blade generally is symmetrical, is respectively that flue gas introduction segment, baffling section and flue gas are derived section along the flue gas direction.The section of importing and exporting of flue gas is general identical with flue gas flow direction, the capture of drop is mainly relied on the baffling section of centre.Front and back at demister all are furnished with flusher, regularly dirt are washed.Because the flushing water behind the demister is opposite with the flue gas direction, partial flushing water is directly taken away by flue gas, the strength of remaining flushing water is also weakened, the baffling part angle of demister is very big in addition, flushing water is difficult to arrive, so allly make that developing result is weakened, can not get in time the dirt of flushing and accumulate over a long period and finally can form serious obstruction.
Summary of the invention
Technical problem: in order to overcome the problem that existing demister exists, the utility model provides a kind of demister design of anti-obstruction, and this demister is made of asymmetrical blade, can prevent fouling and obstruction on the blade well.
Technical scheme:
The technical scheme that its technical problem that will solve the utility model adopts is: a kind of demister of anti-obstruction, comprise demister body that constitutes by demister blade, demister framework and the flusher that is arranged on demister blade two ends, described demister blade comprises introduction segment, preceding baffling section, back baffling section and derives section, described demister blade is a unsymmetric structure, the angle of described introduction segment and flue gas direction is 3 °～15 °, and the height of introduction segment is 0.15～0.25 demister blades height; The angle of baffling section and flue gas direction is 40 °～65 ° before described, and the height of preceding baffling section is 0.2～0.3 demister blades height; The angle of described back baffling section and flue gas direction is 25 °～40 °.
The shower nozzle Way out of the described flusher that is arranged on demister blade introduction segment front end is consistent with the direction of introduction segment.
Undoubtedly, blade is substantially the most also to be most important element in the demister, so demister of the present utility model has carried out special optimal design at the operation characteristic of demister to blade.Traditional demister blade is a symmetrical structure, and the utility model has been made corresponding adjustment at the actual working environment of demister to the geometry of blade.The thinking of adjusting is the trapping ability of removing the reasonable distribution blade according to the difference of rinse capability before and after the demister.Specifically, blade geometric shape one has three changes:
1, changes the frame mode of traditional demister blade inlet section and flue gas flow direction level, change entrance and flue gas flow direction into and form the certain angle angle, so increased a short slightly exhaust gases passes.The bending passage of entrance formation can play preliminary crown_interception to drop like this, and because the flusher before this partial distance demister is very near, so dirt herein is cleaned easily.
2, increase the preceding baffling angle of entrance back, the length of baffling section before suitably shortening simultaneously.The former is for the remove ability of baffling section before increasing to drop, guarantees that most of drop all is removed in the demister front portion.But when increasing owing to angle, developing result can be restrained, so need suitably to shorten the length of this section, avoids generation flushing dead angle;
3, reduce back baffling angle, keep the outlet section blade still with the flue gas flow direction level.Because the capture of drop is finished in the demister front portion mostly, therefore the load of back baffling section greatly alleviates, and does not need the same wide-angle of the same baffling section.Simultaneously,, also require this section blade angle slightly little, be beneficial to flushing water and enter in order to increase the developing result behind the demister.For the flow direction of regular outflow demister air-flow, the direction blade that flue gas is derived section still with the flue gas flow direction level.Beneficial effect: by specialized designs to the demister blade geometric shape, reasonable distribution the capture drop ability of demister, make fouling degree and rinse capability matched well:, strengthen the trapping ability of drop in the good front portion of developing result; And, weaken trapping ability to drop at the weak slightly rear portion of developing result.Can keep the blade surface cleaning by this design, prevent blade fouling and obstruction, keep the normal operation of desulphurization system.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the schematic diagram of demister.
Fig. 2 is the baffling blade of traditional demister.
Fig. 3 is the baffling blade in the utility model.
Have among Fig. 1: 1, flusher, 11, following flusher, 12, go up flusher, 2, the demister body, 21, the demister blade, 22, the demister framework, 3, flue gas.
Among Fig. 2, Fig. 3: 211, entrance, 212, preceding baffling section, 213, back baffling section, 214, outlet section.
The specific embodiment
Demister overall structure pattern of the present utility model is identical with traditional demister, comprises flusher 1 and demister body 2---demister blade 21, demister framework 22.But in order to realize the anti-function of stopping up, the utility model utilization CFD simulation and research technique have carried out special design to demister blade 22.The blade of tradition demister is a symmetrical structure, and the utility model has been made adjustment at the actual working environment situation of demister to the physical dimension of blade.Specifically, the geometry one of the utility model demister blade has three changes, can comparison diagram 2, Fig. 3:
1, changes the frame mode of traditional demister blade inlet section 211 and flue gas flow direction level, change entrance (or introduction segment) 211 into and form certain angle angle α with flue gas flow direction
0(α
0Scope be 3 °～15 °, preferred 5 °～12 °), so increased a short slightly flue gas baffling passage at the smoke inlet place.The baffling passage of entrance 211 formation can play preliminary crown_interception to drop like this, and because the flusher 11 before this partial distance demister is very near, so dirt herein is cleaned easily.The length L of entrance 211
0Scope be 0.15～0.25L (wherein L is the height of demister blade 21).
2, increase the angle [alpha] of preceding baffling section 212
1(α
1Scope be 40 °～65 °), baffling section (212 length L before suitably shortening simultaneously
1(L
1Scope be 0.2～0.3L).The former is for the ability that removes of 212 pairs of drops of baffling section before increasing, and guarantees that most of drop all is removed in the demister front portion.In order to guarantee the developing result of leading portion,, avoid producing the flushing dead angle so need suitably to shorten the length L 1 of this section;
3, reduce the angle [alpha] of back baffling section 213
2(α
2Scope be 25 °～40 °), keep outlet section 214 blades still with the flue gas flow direction level.Because the capture of drop is finished in the demister front portion mostly, therefore the load of back baffling section 213 greatly alleviates, and does not need the equally big angle of the same baffling section 212.Simultaneously, in order to increase the developing result behind the demister, also require this section blade angle α
2Slightly little, be beneficial to flushing water and enter.For the flow direction of regular outflow demister air-flow, the direction blade of exhanst gas outlet section 214 still with the flue gas flow direction level.
In addition, in order to guarantee developing result, the nozzle angle of flusher 11 is adjusted with the demister blade, makes vertically admission passage of flushing water.
When the flue gas that contains moisture passes through demister, because the deviation of streamline, the drop that inertia is big hits the entrance 211 on blade, preceding baffling section 212 and back baffling section 213 and successively is retained down, and gas inertia is less, can flow through from the flue of bending swimmingly.1 dirt that washes termly on the demister blade 21 of demister flusher keeps its cleaning surfaces, prevents demister fouling and obstruction, keeps desulphurization system and normally moves.
Demister flusher 1 adopts polypropylene plastics or similar material manufacturing;
Demister blade 21 adopts polypropylene plastics or similar material manufacturing.
Claims (3)
1. one kind resists the demister that stops up, comprise the demister body (2) that constitutes by demister blade (21), demister framework (22) and be arranged on demister blade (21) two ends flusher (1),, described demister blade (21) comprises introduction segment (211), preceding baffling section, back baffling section and derives section, it is characterized in that: described demister blade (21) is a unsymmetric structure, the angle α of described introduction segment (211) and flue gas direction
0Be 3 °～15 °, the height L of introduction segment (211)
0Be the height L of 0.15～0.25 demister blade (2); The angle α of baffling section (212) and flue gas direction before described
1Be 40 °～65 °, the height L of preceding baffling section (212)
1Be the height L of 0.2～0.3 demister blade (2); The angle α of described back baffling section (213) and flue gas direction
2It is 25 °～40 °.
2. the demister of anti-obstruction according to claim 1 is characterized in that: the shower nozzle Way out of the described flusher that is arranged on demister blade (21) introduction segment front end is consistent with the direction of introduction segment (211).
3. the demister of anti-obstruction according to claim 1 is characterized in that: the angle (α of described introduction segment (211) and flue gas direction
0) be 5 °～12 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920234912XU CN201592028U (en) | 2009-08-14 | 2009-08-14 | Anti-blocking defroster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920234912XU CN201592028U (en) | 2009-08-14 | 2009-08-14 | Anti-blocking defroster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201592028U true CN201592028U (en) | 2010-09-29 |
Family
ID=42774090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920234912XU Expired - Fee Related CN201592028U (en) | 2009-08-14 | 2009-08-14 | Anti-blocking defroster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201592028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107983017A (en) * | 2017-11-07 | 2018-05-04 | 哈尔滨理工大学 | A kind of novel defroster blade |
| CN114950123A (en) * | 2021-02-26 | 2022-08-30 | 河南正达环保科技有限公司 | System for purifying VOCs and malodorous gaseous pollutants in waste gas |
-
2009
- 2009-08-14 CN CN200920234912XU patent/CN201592028U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107983017A (en) * | 2017-11-07 | 2018-05-04 | 哈尔滨理工大学 | A kind of novel defroster blade |
| CN114950123A (en) * | 2021-02-26 | 2022-08-30 | 河南正达环保科技有限公司 | System for purifying VOCs and malodorous gaseous pollutants in waste gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20160814 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |