CN113144757A - Rotary dust collecting and emission reducing device - Google Patents
Rotary dust collecting and emission reducing device Download PDFInfo
- Publication number
- CN113144757A CN113144757A CN202110476315.3A CN202110476315A CN113144757A CN 113144757 A CN113144757 A CN 113144757A CN 202110476315 A CN202110476315 A CN 202110476315A CN 113144757 A CN113144757 A CN 113144757A
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- Prior art keywords
- dust collecting
- shell
- reducing device
- emission reducing
- rotary dust
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
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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
Abstract
The invention discloses a rotary dust collecting and emission reducing device which structurally comprises a shell, partition plates and protruding parts, wherein the front end and the rear end of the shell are respectively provided with an air inlet for air inlet and an air outlet for air exhaust, the shell is internally provided with vertical partition plates along the airflow direction, the left side or the right side of each partition plate is provided with the protruding parts, the protruding parts are parallelly arranged on the partition plates to form a wave-shaped structure, smoke passes through the dust collecting device and is treated by an electric dust collector, and the dust collecting efficiency is higher than 99.99%.
Description
Technical Field
The invention relates to the field of flue gas emission purification and dust removal equipment, in particular to a rotary dust collection and emission reduction device.
Background
The electric dust remover is characterized in that smoke dust of the smoke dust is positively charged when the smoke gas passes through a flue in front of a main structure of the electric dust remover, and then the smoke gas enters an electric dust remover channel provided with a plurality of layers of cathode plates. The positive charge smoke dust and the cathode electric plate are adsorbed mutually, so that the particle smoke dust in the smoke gas is adsorbed on the cathode, and the cathode plate is struck regularly, so that the smoke dust with certain thickness falls down in an ash hopper below the electric dust collector structure under the double actions of self weight and vibration, and the purpose of removing the smoke dust in the smoke gas is achieved.
Currently, chinese patent No.: CN201820844528.0 discloses a whirlwind stove commentaries on classics board electric field electrostatic precipitator device, including the casing, one side bottom of casing is equipped with the flue gas air intake, and the opposite side bottom of casing is equipped with the flue gas air outlet, the inside of casing is equipped with separates the baffle, the bottom of separating the baffle is connected and is divided into two parts with the inside of casing with the bottom of casing. The utility model discloses a compare in traditional electrostatic precipitator equipment, be equipped with two electrostatic precipitator rooms in first clean room and the second clean room, it is more thorough to purify the dust, and be equipped with the air-blast device between first clean room and the second clean room, air flow rate is improved, make purification efficiency higher, and the top of collecting duct group is connected and is equipped with corresponding hydraulic telescoping cylinder, the effect of hydraulic telescoping cylinder is down the shake of collecting duct group, prevent that the dust accumulation from causing the jam and influencing dust removal work at the inner wall of collecting duct group, purification efficiency is improved. However, in the prior art, in the actual use process, the problem that the removal efficiency is improved because the electric dust removal technology is difficult to remove the particles with the equivalent diameter far less than 2.5 micrometers still exists.
Disclosure of Invention
Therefore, aiming at the problems, in order to further implement and realize the important significance of environmental protection, the invention provides the rotary dust-gathering emission reduction device, and small particles in the flue gas are converged and form large particles after passing through the device, so that the particles are easier to remove, and the removal efficiency and the exhaust quality of the particles are improved.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a rotatory dirt emission reduction device that gathers, its structure includes casing, baffle, bellying, the front and back end of casing is equipped with the air inlet that is used for admitting air respectively and is used for carminative gas vent, the casing is inside to set up vertical baffle, every along the air current direction the left side or the right side of baffle set up the bellying, and a plurality of bellyings are parallel to be located and form wave structure on the baffle.
Further, the convex parts on each partition board are arranged on the same side.
Further, the cross section of the bulge is of an arc-shaped structure or a triangular structure.
Further, the interval between every two adjacent convex parts is 0-1 times the width of the convex parts.
Further, the front and rear regions of each of the protrusions form a vortex region in which the smaller particles are gathered and combined with each other.
Further, the working state and the dust particle coalescence process of the device are as follows:
1) boiler flue gas is introduced into an air inlet at the front end of the shell through a pipeline;
2) the flue gas flows backwards through the space between the partition plates;
3) in the flowing process, the air flow is extruded by the bulge and is arranged on the partition plate with the wave-shaped structure: the air flow speed corresponding to the position of the convex part is faster, and the air flow speed corresponding to the position of the concave part is slower, so that a vortex area is formed in the front and rear areas of each convex part;
4) in the vortex, the particles are mutually extruded and collided, a plurality of tiny particles are combined and aggregated to form a larger particle, and the larger particle is separated from the vortex under the action of gravity and centrifugal force and flows to an exhaust port at the rear end of the shell under the action of airflow;
5) the flue gas is discharged from the exhaust port and is discharged into the electric dust collector through a pipeline for back-end treatment.
Furthermore, the outer part of the shell is wrapped with a heat insulation layer.
Furthermore, when the flue gas passing through the micro dust coalescence device passes through the electric dust remover at the rear end, the dust removal efficiency is higher than 99.99%.
By adopting the technical scheme, the invention has the beneficial effects that: the micro-dust coalescence device leads small particles in flue gas to converge and form large particles after the small particles pass through the device, thereby the particulate matters are easier to be removed in the electric dust remover at the rear end, the removal efficiency and the exhaust quality of the particulate matters are improved, in the actual use process, the power plant mostly adopts the electrostatic dust removal technology, but electrostatic precipitators are relatively inefficient at removing particulate matter having equivalent diameters less than and much less than 2.5 microns, therefore, the efficiency limit of electrostatic dust collection is about 99.3-99.5%, the smoke passes through the micro dust collecting device and then is treated by the electric dust collector, the dust removal efficiency is more than 99.99 percent, the invention has simple structure, the exhaust temperature has little influence on the treatment effect in the use process, meanwhile, the pressure loss and the temperature loss of the flue gas are small when the flue gas passes through the micro dust coalescence device, and the operation of rear-end equipment is hardly influenced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic side sectional view of the present invention.
Fig. 3 is a schematic structural view of the circular arc-shaped protruding portion of the present invention.
Fig. 4 is a schematic structural view of the triangular boss of the present invention.
Fig. 5 is a schematic view showing the state of the eddy current generated during the use of the present invention.
In the figure: 1. a housing; 2. a partition plate; 3. a raised portion.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 5, the direction indicated by the arrow in the figures is an airflow direction, and the embodiment provides a rotary dust collecting and emission reducing device, which structurally comprises a housing 1, partition plates 2 and protruding parts 3, wherein the front end and the rear end of the housing 1 are respectively provided with an air inlet for air intake and an air outlet for air exhaust, the housing 1 is internally provided with vertical partition plates 2 along the airflow direction, each partition plate 2 is provided with a protruding part 3 on the left side or the right side, and the protruding parts 3 are parallelly arranged on the partition plates 2 to form a wavy structure.
The protrusions 3 of each of the separators 2 are provided on the same side.
The cross section of the bulge 3 is of a circular arc structure or a triangular structure.
The interval between every two adjacent convex parts 3 is 0-1 times the width of the convex parts 3.
The front and rear regions of each of the projections 3 form a vortex region in which smaller particles are collected and combined with each other.
The shell 1 is wrapped with a heat insulation layer.
When the flue gas passing through the micro dust coalescence device passes through the electric dust remover at the rear end, the dust removal efficiency is higher than 99.99 percent.
The working state and the micro-dust coalescence process of the device are as follows:
1) boiler flue gas is introduced into an air inlet at the front end of the shell 1 through a pipeline;
2) the flue gas flows backwards through the space between the partition boards 2;
3) in the flowing process, the air flow is extruded by the convex part 3, and on the partition plate 2 with the wave-shaped structure: the air flow velocity corresponding to the position of the convex part 3 is faster, and the air flow velocity corresponding to the position of the concave part is slower, so that a vortex region is formed in the front and rear regions of each convex part 3;
4) inside the vortex, the particles are mutually extruded and collided, a plurality of tiny particles are combined and aggregated to form a larger particle, and the larger particle is separated from the vortex under the action of gravity and centrifugal force and flows to an exhaust port at the rear end of the shell 1 under the action of airflow;
5) the flue gas is discharged from the exhaust port and is discharged into the electric dust collector through a pipeline for back-end treatment.
In this embodiment, the discharge amount of particulate matter at the exhaust end of the electrostatic precipitator before the fine dust coalescence apparatus is installed is 51.6mg/m3The removal efficiency is 99.39%, and the discharge amount of the particulate matters at the exhaust end of the electrostatic dust collector is 1.4mg/m after the micro dust coalescence device is installed3The removal efficiency is higher than 99.99 percent and is far lower than the local and national emission standards, and the local environment is protected to the maximum extent.
The micro-dust coalescence device leads small particles in flue gas to converge and form large particles after the small particles pass through the device, thereby the particulate matters are easier to be removed in the electric dust remover at the rear end, the removal efficiency and the exhaust quality of the particulate matters are improved, in the actual use process, the power plant mostly adopts the electrostatic dust removal technology, but electrostatic precipitators are relatively inefficient at removing particulate matter having equivalent diameters less than and much less than 2.5 microns, therefore, the efficiency limit of electrostatic dust collection is about 99.3-99.5%, the smoke passes through the micro dust collecting device and then is treated by the electric dust collector, the dust removal efficiency is more than 99.99 percent, the invention has simple structure, the exhaust temperature has little influence on the treatment effect in the use process, meanwhile, the pressure loss and the temperature loss of the flue gas are small when the flue gas passes through the micro dust coalescence device, and the operation of rear-end equipment is hardly influenced.
The two vortex conditions common in this embodiment are two in fig. 5, but are not limited to two in the figure.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a rotatory dirt emission reduction device that gathers which characterized in that: the structure of the air-intake type air purifier comprises a shell, a partition plate and a plurality of protruding parts, wherein the front end and the rear end of the shell are respectively provided with an air inlet used for air intake and an exhaust port used for exhaust, the shell is internally provided with a vertical partition plate and each protruding part in the air flow direction, and the left side or the right side of the partition plate is provided with the protruding parts which are arranged in parallel to form a wave-shaped structure on the partition plate.
2. A rotary dust collecting and emission reducing device according to claim 1, wherein: the convex parts on each partition board are arranged on the same side.
3. A rotary dust collecting and emission reducing device according to claim 1, wherein: the cross section of the bulge is of a circular arc structure or a triangular structure.
4. A rotary dust collecting and emission reducing device according to claim 1, wherein: the interval between every two adjacent convex parts is 0-1 times the width of the convex parts.
5. A rotary dust collecting and emission reducing device according to claim 1, wherein: the front and rear regions of each projection form a vortex region in which smaller particles are collected and combined with each other.
6. A rotary dust collecting and emission reducing device according to claim 1, wherein: the working state and the micro-dust coalescence process of the device are as follows:
1) boiler flue gas is introduced into an air inlet at the front end of the shell through a pipeline;
2) the flue gas flows backwards through the space between the partition plates;
3) in the flowing process, the air flow is extruded by the bulge and is arranged on the partition plate with the wave-shaped structure: the air flow speed corresponding to the position of the convex part is faster, and the air flow speed corresponding to the position of the concave part is slower, so that a vortex area is formed in the front and rear areas of each convex part;
4) in the vortex, the particles are mutually extruded and collided, a plurality of tiny particles are combined and aggregated to form a larger particle, and the larger particle is separated from the vortex under the action of gravity and centrifugal force and flows to an exhaust port at the rear end of the shell under the action of airflow;
5) the flue gas is discharged from the exhaust port and is discharged into the electric dust collector through a pipeline for back-end treatment.
7. A rotary dust collecting and emission reducing device according to claim 1, wherein: the outside of the shell is wrapped with a heat insulation layer.
8. A rotary dust collecting and emission reducing device according to claim 1, wherein: the micro dust coalescence device is integrally arranged at the front end of the electric dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476315.3A CN113144757A (en) | 2021-04-29 | 2021-04-29 | Rotary dust collecting and emission reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476315.3A CN113144757A (en) | 2021-04-29 | 2021-04-29 | Rotary dust collecting and emission reducing device |
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| Publication Number | Publication Date |
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| CN113144757A true CN113144757A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110476315.3A Pending CN113144757A (en) | 2021-04-29 | 2021-04-29 | Rotary dust collecting and emission reducing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685822A (en) * | 2021-08-31 | 2021-11-23 | 湖南中森环境科技有限公司 | Hazardous waste rotary kiln incineration process system |
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2021
- 2021-04-29 CN CN202110476315.3A patent/CN113144757A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685822A (en) * | 2021-08-31 | 2021-11-23 | 湖南中森环境科技有限公司 | Hazardous waste rotary kiln incineration process system |
| CN113685822B (en) * | 2021-08-31 | 2023-11-24 | 湖南中森环境科技有限公司 | Dangerous waste rotary kiln incineration process system |
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