CN112933840A - Self-filming cyclone plate dust and mist eliminator - Google Patents
Self-filming cyclone plate dust and mist eliminator Download PDFInfo
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- CN112933840A CN112933840A CN202110167733.4A CN202110167733A CN112933840A CN 112933840 A CN112933840 A CN 112933840A CN 202110167733 A CN202110167733 A CN 202110167733A CN 112933840 A CN112933840 A CN 112933840A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
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Abstract
The invention discloses a self-film-forming cyclone plate dust and mist remover, which comprises an outer cylinder, a screen cylinder and a central support rod, wherein the outer cylinder, the screen cylinder and the central support rod are sequentially sleeved at intervals from outside to inside; the peripheral wall of the lower part of the screen cylinder body is a non-porous section, and the peripheral wall of the upper part of the screen cylinder body is a screen hole section; a cavity between the outer cylinder and the screen cylinder forms a flue gas dead zone; a plurality of stages of upper flow plates are arranged above the sieve pore sections at intervals; a lower vortex plate is arranged in the outer cylinder body and below the sieve pore section. The invention separates the smoke flowing area from the liquid film on the outer cylinder wall through the screen cylinder, fundamentally solves the problem of secondary carrying, and returns fog drops to the surface of the lower rotary plate through the liquid collecting tank to form a stable liquid film, thereby achieving the purpose of saving water without additionally arranging a water spraying device. The fog drops separated from the flue gas are gathered on the inner wall of the outer barrel, can be converged to the water collecting tank under the action of gravity, and then flow back to the surface of the lower rotational flow plate, and a continuous and stable liquid film is formed on the surface of the blades of the lower rotational flow plate, namely, the self-filming. The liquid film can adsorb dust particles in the flue gas, and the dust removal efficiency is improved.
Description
Technical Field
The invention relates to a flue gas treatment device and a chimney cyclone demisting and dedusting separation device, in particular to a cyclone plate dedusting demister capable of forming a film automatically.
Background
In recent years, with the rapid development of industry, the atmospheric environmental pollution is increasingly serious, wherein SO2And fine particulate matter is the main air pollutant produced by the combustion of fossil fuels.
In order to execute environmental protection policies, various industrial enterprises widely adopt flue gas desulfurization devices. According to statistics, 90% of thermal power generating units adopt limestone-gypsum wet desulphurization. The limestone-gypsum wet desulphurization is also adopted successively for metallurgy, petrifaction, building materials and ship power. The desulfurized flue gas contains a large amount of dust particles and slurry fog drops with different particle sizes, and if the desulfurized flue gas is directly discharged into the atmosphere, a gypsum rain phenomenon is formed in peripheral areas, so that secondary pollution is caused. Therefore, each enterprise can further treat the desulfurized flue gas by adopting a wet electric dust removal or a tube bundle type demister. However, wet-type electric precipitation has the problems of high initial investment, large floor area, large resistance, high power consumption and the like. Conventional tube bank formula defroster has flue gas inlet velocity of flow to distribute inhomogeneous, and too big because of the flue gas velocity of flow easily leads to the defroster to produce the liquid drop secondary and carries the serious problem of phenomenon, and the sparge water is too big, has desulfurizing tower or scrubbing tower business turn over water to be difficult to balance, is compelled to reduce the sparge water, and defogging dust collection efficiency can't guarantee.
In practical application, the pipe bundle type rotational flow demisting generally has the problems of low demisting and dedusting efficiency, high requirement on washing water, easiness in blockage and serious secondary carrying of flue gas, and reduces the demisting and dedusting efficiency. Although the subsequent patent devices are improved greatly, the washing water amount is still large, the water balance of the desulfurizing tower is damaged, the washing water is forced to be reduced or stopped, and the problem of secondary carrying cannot be solved.
For example, the Chinese patent application (application publication No. CN106582121A) discloses a tube bundle type dust and mist removing device with liquid collection. A liquid holding ring is arranged in an annular area between a defogging unit cylinder body and a cylindrical outer cylinder of the device. Although the liquid holding ring has a certain effect on blocking a liquid film on the wall surface of the cylinder body, water mist mixed in smoke due to secondary carrying cannot be blocked, water is blocked by the liquid holding ring without drainage and discharge, and in addition, washing water must be externally connected, so that the serious water balance problem and the secondary carrying problem are caused, the washing water cannot be normally put into operation, and the demisting and dedusting efficiency is reduced; the nozzle can not form a long-term stable liquid film on the surface of the swirl vane by discontinuously spraying water, thereby reducing the dust removal efficiency and having large water consumption.
The smoke flowing area and the liquid film on the outer cylinder wall are separated by the screen cylinder body, so that the secondary carrying problem is fundamentally solved, the smoke is returned by the liquid collecting tank with bottom diversion flushing water to separate fog drops and collect water, the collected water is recycled, a water spraying device is not required to be additionally arranged, a continuous and stable liquid film can be automatically formed on the surface of the rotational flow sheet of the primary sleeve, and the problems that the liquid film is damaged due to interruption of the flushing water in the practical engineering application, the secondary carrying is serious, the dust removal efficiency is low, the smoke dust removal water consumption is high and the like are solved.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art and provide a cyclone plate dust and mist remover capable of forming a film by self.
The invention thoroughly solves the problems of large water consumption, low dust removal efficiency, serious secondary carrying and the like of the existing device in principle and structure.
The invention is realized by the following technical scheme:
a self-filming cyclone plate dust and mist eliminator comprises an outer cylinder 1, a screen cylinder 2 and a central support rod 3 which are sequentially sleeved at intervals from outside to inside;
the peripheral wall of the lower part of the screen cylinder body 2 is a non-porous section 21, and the peripheral wall of the upper part is a screen hole section;
a cavity between the outer cylinder 1 and the screen cylinder 2 forms a flue gas dead zone;
a plurality of stages of upper flow plates 4 are arranged above the sieve pore sections at intervals;
a lower vortex plate 41 is arranged in the outer cylinder 1 and below the sieve hole section.
The upper rotary flow plate 4 and the lower rotary flow plate 41 are sleeved outside the central support rod 3; the outer edge of the upper flow plate 4 is jointed with the inner peripheral surface of the sieve pore section; the outer edge of the lower rotary flow plate 41 is jointed with the inner circumferential surface of the outer cylinder 1;
a gap between the non-porous section 21 and the outer cylinder 1 forms a water collecting tank 5, the bottom of the water collecting tank 5 is provided with a plurality of openings, and each opening is provided with a guide plate 51;
fog drops in the flue gas enter the flue gas dead zone through the screen cylinder 2 due to the action of centrifugal force and are adsorbed on the inner wall of the outer cylinder 1 to form a water film, the water film enters the water collecting tank 5 due to the action of gravity and drops on the lower cyclone plate 41 through the guide plate 51, and a stable and uniform thin liquid film is formed on the surface of the blade of the lower cyclone plate 41;
the flue gas containing water vapor enters from the bottom of the cyclone plate dust removal demister and flows through the lower cyclone plate 41 and the upper cyclone plate 4;
the flue gas forms a rotational flow space under the flow guiding and rotational flow effects of the lower rotational flow plate 41 and the upper rotational flow plate 4;
dust particles in the flue gas collide with a liquid film of the upper flow plate 4 and fog drops in a rotational flow space for condensation, and penetrate through the sieve hole section with solid particles subjected to water condensation under the action of centrifugal force to enter a flue gas dead zone, so that secondary carrying is avoided;
when passing through the lower cyclone plate 41, dust particles in the flue gas collide with a liquid film on the surface of the lower cyclone plate 41 and are condensed, and condensed slurry is converged by the lower cyclone plate 41 due to the self-weight effect and then is discharged out of the cyclone plate dust removal demister;
and the fog drops are thrown into the sieve hole section under the cyclone action of the dedusted flue gas and adsorbed on the inner wall of the outer cylinder 1, and the flue gas after water-fog separation is discharged from the top of the sieve cylinder 2.
The outer cylinder 1 is sealed with the upper edge of the screen cylinder 2.
The outer cylinder body 1, the screen cylinder body 2 and the central support rod 3 are of an integrated structure, or are made into a multi-section detachable structure which is spliced or in threaded connection with a sleeve structure corresponding to the upper vortex plate 4 and the lower vortex plate 41 at each stage.
The upper flow plate 4 and the lower flow plate 41 have the same structure.
Compared with the prior art, the invention has the following advantages and effects:
(1) the secondary carrying problem that the liquid film breaks is solved: the smoke flowing area and the liquid film on the outer cylinder wall are separated by the screen cylinder body to form a smoke flowing dead area, so that the problem of secondary carrying is fundamentally solved;
(2) the formed liquid film is stable and uniform: the backflow fog drops are collected through the liquid collecting tank to form stable water flow, and the water flow automatically flows back to the surface of the lower rotary flow plate 41. Fog drops separated from the flue gas can fall back to the surface of the lower cyclone plate 41 under the action of gravity, a continuous and stable liquid film, namely a self-formed film, is formed on the surface of the blade of the lower cyclone plate 41, and the formed liquid film is stable, so that the influence of intermittent washing water on the stability of the liquid film is avoided;
(3) water conservation: the backflow fog drops are collected through the liquid collecting tank, stable water flow recycling is formed, and therefore the water-saving purpose is achieved without additionally arranging a water spraying device.
(4) The dust removal efficiency is high: this liquid film is from the film forming, and is stable even, can not appear that the thick film is torn and cause the secondary to carry, can adsorb the dust granule in the flue gas again simultaneously, improves dust collection efficiency.
The invention solves the technical problems of serious secondary carrying, low dust removal efficiency, large water consumption for flue gas dust removal and the like in the practical engineering application.
Drawings
FIG. 1 is a schematic view of the cyclone plate dust and mist eliminator of the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Examples
As shown in fig. 1. The invention discloses a self-filming cyclone plate dust and mist eliminator which comprises an outer cylinder 1, a screen cylinder 2 and a central support rod 3 which are sequentially sleeved at intervals from outside to inside;
the peripheral wall of the lower part of the screen cylinder body 2 is a non-porous section 21, and the peripheral wall of the upper part is a screen hole section;
a cavity between the outer cylinder 1 and the screen cylinder 2 forms a flue gas dead zone;
a plurality of stages of upper flow plates 4 (in a radial shape) are arranged above the sieve pore section at intervals;
a lower vortex plate 41 is arranged in the outer cylinder 1 and below the sieve hole section.
The upper rotary flow plate 4 and the lower rotary flow plate 41 are sleeved outside the central support rod 3; the outer edge of the upper flow plate 4 is jointed with the inner peripheral surface of the sieve pore section; the outer edge of the lower rotary flow plate 41 is jointed with the inner circumferential surface of the outer cylinder 1; the upper flow plate 4 and the lower flow plate 41 have the same structure.
A gap between the non-porous section 21 and the outer cylinder 1 forms a water collecting tank 5, the bottom of the water collecting tank 5 is provided with a plurality of openings, and each opening is provided with a guide plate 51;
fog drops in the flue gas enter the flue gas dead zone through the screen cylinder 2 due to the action of centrifugal force and are adsorbed on the inner wall of the outer cylinder 1 to form a water film, the water film enters the water collecting tank 5 due to the action of gravity and drops on the lower cyclone plate 41 through the guide plate 51, and a liquid film is formed on the surface of the blade of the lower cyclone plate 41;
the flue gas containing water vapor enters from the bottom of the cyclone plate dust removal demister and flows through the lower cyclone plate 41 and the upper cyclone plate 4;
the flue gas forms a rotational flow space under the flow guiding and rotational flow effects of the lower rotational flow plate 41 and the upper rotational flow plate 4;
dust particles in the flue gas collide with a liquid film of the upper flow plate 4 and fog drops in a rotational flow space for condensation, and penetrate through the sieve hole section with solid particles subjected to water condensation under the action of centrifugal force to enter a flue gas dead zone, so that secondary carrying is avoided;
when passing through the lower cyclone plate 41, dust particles in the flue gas collide with a liquid film on the surface of the lower cyclone plate 41 and are condensed, and the condensed slurry falls down from the lower cyclone plate 41 due to the self-weight effect and is discharged out of the cyclone plate dust removal demister;
and the fog drops are thrown into the sieve hole section under the cyclone action of the dedusted flue gas and adsorbed on the inner wall of the outer cylinder 1, and the flue gas after water-fog separation is discharged from the top of the sieve cylinder 2.
The outer cylinder 1 is sealed with the upper edge of the screen cylinder 2.
The outer cylinder body 1, the screen cylinder body 2 and the central support rod 3 are of an integrated structure, or are made into a multi-section detachable structure which is spliced or in threaded connection with a sleeve structure corresponding to the upper vortex plate 4 and the lower vortex plate 41 at each stage.
As described above, the present invention can be preferably realized.
The embodiments of the present invention are not limited to the above-described embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention.
Claims (6)
1. A self-filming cyclone plate dust and mist eliminator is characterized by comprising an outer cylinder (1), a screen cylinder (2) and a central support rod (3) which are sequentially sleeved at intervals from outside to inside;
the peripheral wall of the lower part of the screen cylinder body (2) is a non-porous section (21), and the peripheral wall of the upper part of the screen cylinder body is a screen hole section;
a cavity between the outer cylinder (1) and the screen cylinder (2) forms a flue gas dead zone;
a plurality of stages of upper flow plates (4) are arranged above the sieve pore sections at intervals;
a lower rotary flow plate (41) is arranged in the outer cylinder body (1) and below the sieve hole section.
2. The dust and mist eliminator of cyclone plate with self-filming function as claimed in claim 1, wherein the upper cyclone plate (4) and the lower cyclone plate (41) are sleeved outside the central support rod (3); the outer edge of the upper flow plate (4) is jointed with the inner peripheral surface of the sieve pore section; the outer edge of the lower rotary flow plate (41) is jointed with the inner circumferential surface of the outer cylinder body (1);
a gap between the non-porous section (21) and the outer cylinder body (1) forms a water collecting tank (5), the bottom of the water collecting tank (5) is provided with a plurality of openings, and each opening is provided with a guide plate (51);
fog drops in the flue gas enter the flue gas dead zone through the screen cylinder (2) due to the action of centrifugal force and are adsorbed on the inner wall of the outer cylinder (1) to form a water film, the water film enters the water collecting tank (5) due to the action of gravity and flows back on the lower cyclone plate (41) through the guide plate (51), and a stable and uniform thin liquid film is formed on the surface of the blade of the lower cyclone plate (41);
the flue gas containing water vapor enters from the bottom of the cyclone plate dust and mist removal device and flows through the lower cyclone plate (41) and the upper cyclone plate (4);
the flue gas forms a cyclone space under the flow guiding and cyclone effects of the lower cyclone plate (41) and the upper cyclone plate (4);
dust particles in the flue gas collide with a liquid film of the upper flow plate (4) and fog drops in a rotational flow space for condensation, and the dust particles and solid particles subjected to water condensation penetrate through the sieve hole section under the action of centrifugal force and enter a flue gas dead zone separated by the sieve cylinder (2), so that secondary carrying is avoided;
when passing through the lower cyclone plate (41), dust particles in the flue gas collide with a liquid film on the surface of the lower cyclone plate (41) and are aggregated, and aggregated slurry is converged by the lower cyclone plate (41) due to the self-weight effect and then is discharged out of the cyclone plate dust removal demister;
and the fog drops are thrown into the sieve mesh section under the cyclone action of the dedusted flue gas and are adsorbed on the inner wall of the outer cylinder (1), and the flue gas after water-fog separation is discharged from the top of the screen cylinder (2).
3. The self-filming cyclone plate dust and mist eliminator of claim 2, wherein: the outer cylinder (1) is sealed with the upper edge of the screen cylinder (2).
4. The self-filming cyclone plate dust and mist eliminator of claim 3, wherein: the outer cylinder body (1), the screen cylinder body (2) and the central support rod (3) are of an integrated structure, or are made into a multi-section detachable structure which is spliced or in threaded connection with a sleeve structure corresponding to the upper vortex plate (4) and the lower vortex plate (41) at each stage.
5. The self-filming cyclone plate dust and mist eliminator of claim 2, wherein: the upper rotary flow plate (4) and the lower rotary flow plate (41) have the same structure.
6. The self-filming cyclone plate dust and mist eliminator of claim 5, wherein: the upper rotary flow plate (4) and the lower rotary flow plate (41) are identical in structure, and blades of the upper rotary flow plate and the lower rotary flow plate are radial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110167733.4A CN112933840A (en) | 2021-02-07 | 2021-02-07 | Self-filming cyclone plate dust and mist eliminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110167733.4A CN112933840A (en) | 2021-02-07 | 2021-02-07 | Self-filming cyclone plate dust and mist eliminator |
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| CN112933840A true CN112933840A (en) | 2021-06-11 |
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| CN202110167733.4A Pending CN112933840A (en) | 2021-02-07 | 2021-02-07 | Self-filming cyclone plate dust and mist eliminator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457319A (en) * | 2021-07-08 | 2021-10-01 | 惠泽（南京）环保科技有限公司 | Water film device and exhaust treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1223294A (en) * | 1967-07-06 | 1971-02-24 | Jean Louis Edouard Thuillier | Improvements in or relating to a process and apparatus for removing the dust from gases |
| CN106582121A (en) * | 2017-01-11 | 2017-04-26 | 南京宇行环保科技有限公司 | Tube bundle type dedusting and demisting device with liquid collection function |
| CN206454382U (en) * | 2017-01-11 | 2017-09-01 | 南京宇行环保科技有限公司 | A kind of bundled tube dedusting demister collected with liquid |
| US20170361338A1 (en) * | 2015-01-28 | 2017-12-21 | Kingclean Electric Co., Ltd. | Two-stage dust-air separation structure and dust cup comprising same |
| CN208177107U (en) * | 2018-03-30 | 2018-12-04 | 北京净天环境科技有限公司 | Vortex type high-efficient dedusting demister |
| CN208526052U (en) * | 2018-07-20 | 2019-02-22 | 河北众瑞环保设备有限公司 | A kind of vortex-flow and defrosting device |
| CN209378725U (en) * | 2018-08-29 | 2019-09-13 | 浙江易澄环保科技有限公司 | A kind of Multi-stage spiral-plate tower |
-
2021
- 2021-02-07 CN CN202110167733.4A patent/CN112933840A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1223294A (en) * | 1967-07-06 | 1971-02-24 | Jean Louis Edouard Thuillier | Improvements in or relating to a process and apparatus for removing the dust from gases |
| US20170361338A1 (en) * | 2015-01-28 | 2017-12-21 | Kingclean Electric Co., Ltd. | Two-stage dust-air separation structure and dust cup comprising same |
| CN106582121A (en) * | 2017-01-11 | 2017-04-26 | 南京宇行环保科技有限公司 | Tube bundle type dedusting and demisting device with liquid collection function |
| CN206454382U (en) * | 2017-01-11 | 2017-09-01 | 南京宇行环保科技有限公司 | A kind of bundled tube dedusting demister collected with liquid |
| CN208177107U (en) * | 2018-03-30 | 2018-12-04 | 北京净天环境科技有限公司 | Vortex type high-efficient dedusting demister |
| CN208526052U (en) * | 2018-07-20 | 2019-02-22 | 河北众瑞环保设备有限公司 | A kind of vortex-flow and defrosting device |
| CN209378725U (en) * | 2018-08-29 | 2019-09-13 | 浙江易澄环保科技有限公司 | A kind of Multi-stage spiral-plate tower |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457319A (en) * | 2021-07-08 | 2021-10-01 | 惠泽（南京）环保科技有限公司 | Water film device and exhaust treatment device |
| CN113457319B (en) * | 2021-07-08 | 2022-07-01 | 惠泽（南京）环保科技有限公司 | Water film device and exhaust treatment device |
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Application publication date: 20210611 |
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