CN203235343U - Self-cleaning demisting device for vertical wet flue - Google Patents
Self-cleaning demisting device for vertical wet flue Download PDFInfo
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- CN203235343U CN203235343U CN 201320237716 CN201320237716U CN203235343U CN 203235343 U CN203235343 U CN 203235343U CN 201320237716 CN201320237716 CN 201320237716 CN 201320237716 U CN201320237716 U CN 201320237716U CN 203235343 U CN203235343 U CN 203235343U
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- flue gas
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Abstract
The utility model discloses a self-cleaning demisting device for a vertical wet flue. The device comprises a central fixed column and graded whirlwind blades, wherein the graded whirlwind blades are fixedly installed on the central fixed column and are distributed at intervals along the periphery of the central fixed column; each graded whirlwind blade comprises an upper blade and a lower blade which are fixedly connected or integrally formed, wherein the included angle between the back of the upper blade and the main air flow direction of flue gas is 45-85 degrees, and the included angle between the back of the lower blade and the main air flow direction of flue gas is 5-40 degrees. Compared with the prior art, the device disclosed by the utility model has excellent self-cleaning capacity and better demisting effect.
Description
Technical field
The utility model relates to a kind of wet flue demister, particularly relates to the demister of the vertical wet flue after a kind of flue gas desulfurization, and it is equally applicable to the wet flue demister in other gas dischargings.
Background technology
Along with the control criterion of national atmosphere environment protection treating improves day by day, wet desulfurization system has become main flow.Do not design simultaneously GGH(flue gas one flue gas heat-exchange unit) desulphurization system also increasing, this moment, flue gas was saturated flue gas through the flue gas that enters chimney after the desulphurization system.Because the design understanding for wet flue is not enough, it is very general that domestic wet flue outlet flue gas drop carries phenomenon, i.e. saturated flue gas pressure drop when chimney rises, and adiabatic expansion makes flue gas cools down, forms some drops.Owing to contain dust, gypsum particle and acidic materials etc. in the drop, can cause larger adverse effect to power plant and surrounding enviroment, periphery has been caused environmental hazard; Flow to without the wet flue outer wall of corrosion-resistant if be with simultaneously corrosive drop to drop down, can cause the damage of outer surface burn into, also affect the security of equipment.What at present, demister used is the spiral-plate leaf 21 of routine as shown in Figure 3.In order to guarantee that except fog effect the angle of the back side of spiral-plate leaf 21 and flue gas primary air direction requires large (being generally more than 45 °).Flue gas directly and after spiral-plate leaf 21 collisions, the moisture in the flue gas and solid impurity are bonded on the spiral-plate leaf 21 owing to centrifugal action is glutinous, and drop presents even distribution at whole spiral-plate leaf 21; When the part moisture evaporation, some solid impurity particle foulings on the surface of spiral-plate leaf 21 will cause the apparent height fouling of spiral-plate leaf 21 in the short time.When fouling is serious, just need to clean spiral-plate leaf 21 in 2-3 month, in order to avoid impact is except fog effect.
The utility model content
The purpose of this utility model provide a kind of swirl vane less scaling be used for automatically cleaning classification cyclone defogger in the vertical wet flue.
For achieving the above object, as a kind of technical scheme of the present utility model, the automatically cleaning demister that the utility model is used for the vertical wet flue comprises center fixed leg and classification swirl vane, and the classification swirl vane is fixedly installed on the fixed leg of center and circumferentially spaced apart along the center fixed leg; Described classification swirl vane comprises blade and lower blade, described blade and lower blade are fixed together or are one-body molded, wherein, the angle of the back side of blade and flue gas primary air direction is 45-85 °, the angle of the back side of lower blade and flue gas primary air direction is 5-40 °, and the angle of the back side of blade and flue gas primary air direction is greater than the back side of lower blade and the angle of flue gas primary air direction.
As another kind of technical scheme of the present utility model, the automatically cleaning demister that the utility model is used for the vertical wet flue comprises center fixed leg and classification swirl vane, and the classification swirl vane is fixedly installed on the fixed leg of center and circumferentially spaced apart along the center fixed leg; Described classification swirl vane is comprised of blade and lower blade, described blade and lower blade are fixed together or are one-body molded, wherein, the angle of the back side of blade and flue gas primary air direction is 45-85 °, the angle of the back side of lower blade and flue gas primary air direction is 5-40 °, and the angle of the back side of blade and flue gas primary air direction is greater than the back side of lower blade and the angle of flue gas primary air direction.
Further, the angle of the back side of blade described in the utility model and flue gas primary air direction is larger more than 15 ° than the angle of the back side of lower blade and flue gas primary air direction.
Further, the angle of the back side of blade described in the utility model and flue gas primary air direction is 50-70 °, and the angle of the back side of lower blade and flue gas primary air direction is 10-30 °.
Compared with prior art, the beneficial effects of the utility model are:
Because swirl vane adopts the grading design of blade and lower blade, and the critical place at upper and lower blade forms a knuckle, the eddy current effect that knuckle produces so that fume centralized peel off at the connection transition region generation drop of classification swirl vane, simultaneously, the lift meeting that the flue gas rising brings has further strengthened the automatically cleaning effect of swirl vane so that swirl vane rotates around central fixed shaft.In addition, with respect to swirl vane conventional in the prior art for the angle of the back side that guarantees to require except fog effect spiral-plate leaf and flue gas primary air direction greatly (being generally more than 45 °), after the utility model adopts the classification swirl vane, the back side of permission lower blade and the angle of flue gas primary air direction are little of 5 °, not only guide thus drop in the flue gas to concentrate on to connect transition region II place and occur peeling off, and, concentrate on the flue gas that connects the transition region II because the impact of the eddy current effect that the knuckle that is subjected to form between blade and the lower blade brings, more be conducive to separating out of drop in the flue gas, make the utlity model has unforeseeable better except fog effect.The utility model automatically cleaning demister can improve the environmental aspect of power plant and periphery greatly, has good Social benefit and economic benefit.
Description of drawings
Fig. 1 is that the classification swirl vane of the utility model automatically cleaning demister and the installation of center fixed leg concern schematic diagram,
Fig. 2 is the structural representation of the classification swirl vane of the utility model automatically cleaning demister;
Fig. 3 is the structural representation of conventional spiral-plate leaf in the prior art;
Fig. 4 is the fundamental diagram of the utility model automatically cleaning demister;
Fig. 5 is the scheme of installation of the utility model automatically cleaning demister in flue;
Among the figure, 1. center fixed leg, 2. blade, 3. lower blade, 4. wet flue, 21. spiral-plate leafs.
The specific embodiment
Further specify the utility model below in conjunction with accompanying drawing.
Such as Fig. 1, Fig. 2 and shown in Figure 5, the utility model automatically cleaning demister is installed in the vertical wet flue 4.The utility model automatically cleaning demister comprises center fixed leg 1 and classification swirl vane.Center fixed leg 1 can adopt solid or the hollow cylinder structure.The classification swirl vane is circumferentially spaced apart along center fixed leg 1, is preferably even distribution.The quantity of classification swirl vane is preferably the 6-12 sheet.The classification swirl vane comprises blade 2 and lower blade 3.As wherein a kind of embodiment of the present utility model, the classification swirl vane can only be comprised of blade 2 and lower blade 3.Blade 2 and lower blade 3 are fixed together or are one-body molded.Blade 2 and lower blade 3 all have two faces: positive (being the smoke-shock face) and the back side.Wherein, the front refers to that blade directly is subject to the windward side that the flue gas primary air washes away, and the back side then refers to the lee face of blade contrary to the positive.The angle of the back side of blade 2 and flue gas primary air direction is greater than the back side of lower blade 3 and the angle of flue gas primary air direction.The angle of the back side of blade 2 and flue gas primary air direction is 45-85 °, and optimized angle is 50-70 °.The angle of the back side of lower blade 3 and flue gas primary air direction is 5-40 °, and optimized angle is 10-30 °.Consider that the droplet erosion in the vertical wet flue 4 is stronger, the preferred FRP of the material of classification swirl vane or titanium steel material.
Referring to Fig. 4, in the utility model device, because the back side of lower blade 3 and the angle less (can be 5-40 °) of flue gas primary air direction, when flue gas rises to when contacting with lower blade 3,3 pairs of flue gases of lower blade produce stronger drainage effect, and, because the centrifugal force that lower blade 3 produces is less, so that the drop that rises in the flue gas of lower blade 3 is not easy to peel off out from flue gas, lower blade 3 is therefore cleaner.In addition, because the angle of the angle of the back side of blade 2 and flue gas primary air direction and the back side of lower blade 3 and flue gas primary air direction is different, thereby the critical place at blade 2 and lower blade 3 forms a knuckle, when flue gas carries drop and continues to climb the connection transition region II that is raised to the classification swirl vane by lower blade 3, the angle of climbing of flue gas diminishes suddenly, the eddy current effect that produced by centrifugal force and knuckle affects, and the drop in the flue gas is concentrated at connection transition region II place and occurred peeling off.As shown in Figure 4, connect the bottom that the transition region II is positioned at blade 2, the initiating terminal that connects the transition region II then is positioned at the junction (that is critical place of blade 2 and lower blade 3) of lower blade 3 and blade 2.In addition, the direct flue gas that rises to the direction of blade 2 owing to the impact of the eddy current effect that produced by the knuckle between the upper and lower blade, also converges to connecting the transition region II, and then the drop in the flue gas is peeled off in connection transition region II.Thus, the free drop of the overwhelming majority in the flue gas is connected with solid impurity and connects in the transition region II.
Because the water droplet in the flue gas is connected with solid impurity and is separated out the zone and concentrate on and connect the transition region II,, the moisture of connection transition region II is gathered together formation liquid stream so that being not easy to be evaporated, finally make solid impurity leave blade surface with mobile being carried of liquid stream, make the utility model obtain remarkable automatically cleaning ability.The lift that produces when in addition, flue gas is by the utility model device can drive the classification swirl vane around central fixed shaft 1 rotation, the further automatically cleaning effect that strengthens the classification swirl vane of the centrifugal force that produces in rotary course meeting.The scaling rate of classification swirl vane of the present utility model only is 1/12 of conventional spiral-plate leaf 21, and in other words, classification swirl vane of the present utility model is equivalent to 2-3 and just need to cleans once.
On the other hand, in the prior art, in order to guarantee that except fog effect the back side of conventional spiral-plate leaf 21 and the angle of flue gas primary air direction require large (being generally more than 45 °).And behind the utility model employing classification swirl vane, the angle of the back side of lower blade 3 and flue gas primary air direction allows little of 5 °, thus so that guide to connect the transition region II flue gas under the impact of the eddy current effect that the knuckle that forms between blade and the lower blade brings, more be conducive to separating out of drop in the flue gas, make to the utlity model has better except fog effect.
Although above described by reference to the accompanying drawings preferred embodiment of the present utility model, but those skilled in the art should recognize, the utility model should not be limited to the particular content of above-described embodiment, in the situation of the utility model spirit and scope that do not break away from the claims restriction, can make various modification and improvement to above-described embodiment.
Claims (4)
1. automatically cleaning demister that is used for the vertical wet flue is characterized in that: comprise center fixed leg and classification swirl vane, the classification swirl vane is fixedly installed on the fixed leg of center and circumferentially spaced apart along the center fixed leg; Described classification swirl vane comprises blade and lower blade, described blade and lower blade are fixed together or are one-body molded, wherein, the angle of the back side of blade and flue gas primary air direction is 45-85 °, the angle of the back side of lower blade and flue gas primary air direction is 5-40 °, and the angle of the back side of blade and flue gas primary air direction is greater than the back side of lower blade and the angle of flue gas primary air direction.
2. automatically cleaning demister that is used for the vertical wet flue is characterized in that: comprise center fixed leg and classification swirl vane, the classification swirl vane is fixedly installed on the fixed leg of center and circumferentially spaced apart along the center fixed leg; Described classification swirl vane is comprised of blade and lower blade, described blade and lower blade are fixed together or are one-body molded, wherein, the angle of the back side of blade and flue gas primary air direction is 45-85 °, the angle of the back side of lower blade and flue gas primary air direction is 5-40 °, and the angle of the back side of blade and flue gas primary air direction is greater than the back side of lower blade and the angle of flue gas primary air direction.
3. automatically cleaning demister according to claim 1 and 2 is characterized in that: the angle of the back side of described blade and flue gas primary air direction is larger more than 15 ° than the angle of the back side of lower blade and flue gas primary air direction.
4. automatically cleaning demister according to claim 1 and 2, it is characterized in that: the angle of the back side of described blade and flue gas primary air direction is 50-70 °, the angle of the back side of lower blade and flue gas primary air direction is 10-30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320237716 CN203235343U (en) | 2013-05-06 | 2013-05-06 | Self-cleaning demisting device for vertical wet flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320237716 CN203235343U (en) | 2013-05-06 | 2013-05-06 | Self-cleaning demisting device for vertical wet flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203235343U true CN203235343U (en) | 2013-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320237716 Withdrawn - After Issue CN203235343U (en) | 2013-05-06 | 2013-05-06 | Self-cleaning demisting device for vertical wet flue |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103239944A (en) * | 2013-05-06 | 2013-08-14 | 浙江浙大网新机电工程有限公司 | Self-cleaning and demisting device for vertical wet flue |
| RU189122U1 (en) * | 2019-01-11 | 2019-05-13 | Щёголев Виталий Алексеевич | Battery Emulsifier Swirler Unit with Replaceable Blade Machines |
-
2013
- 2013-05-06 CN CN 201320237716 patent/CN203235343U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103239944A (en) * | 2013-05-06 | 2013-08-14 | 浙江浙大网新机电工程有限公司 | Self-cleaning and demisting device for vertical wet flue |
| CN103239944B (en) * | 2013-05-06 | 2015-02-25 | 浙江浙大网新机电工程有限公司 | Self-cleaning and demisting device for vertical wet flue |
| RU189122U1 (en) * | 2019-01-11 | 2019-05-13 | Щёголев Виталий Алексеевич | Battery Emulsifier Swirler Unit with Replaceable Blade Machines |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131016 Effective date of abandoning: 20150225 |
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| RGAV | Abandon patent right to avoid regrant |