CN220803789U - Wet electrostatic precipitator entry air current distribution device - Google Patents
Wet electrostatic precipitator entry air current distribution device Download PDFInfo
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- CN220803789U CN220803789U CN202322160821.9U CN202322160821U CN220803789U CN 220803789 U CN220803789 U CN 220803789U CN 202322160821 U CN202322160821 U CN 202322160821U CN 220803789 U CN220803789 U CN 220803789U
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- Prior art keywords
- flue gas
- flow distribution
- distribution plate
- electrostatic precipitator
- air flow
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- 239000012719 wet electrostatic precipitator Substances 0.000 title claims abstract description 20
- 239000003546 flue gas Substances 0.000 claims abstract description 83
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000011148 porous material Substances 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 10
- 239000000779 smoke Substances 0.000 claims description 7
- 239000011152 fibreglass Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 description 3
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- -1 temperature Substances 0.000 description 1
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- Electrostatic Separation (AREA)
Abstract
The utility model discloses an inlet airflow distribution device of a wet electrostatic precipitator, which relates to the technical field of airflow distribution and comprises a shell and an ash bucket, wherein the shell sequentially comprises an orifice plate, a grid, a first airflow distribution plate group and a second airflow distribution plate group from top to bottom; the flue gas sequentially passes through the second airflow distribution plate, the first airflow distribution plate, the grid and the pore plate, so that the flue gas is uniformly distributed four times, the uniformity of flue gas distribution is improved, and the dust removal efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of air flow distribution, in particular to an inlet air flow distribution device of a wet electrostatic precipitator.
Background
The electrostatic precipitator has the advantages of high dust removal efficiency, reliable operation, large flue gas treatment amount and the like, is the most common and effective dust pollution control device, is widely applied to the industrial dust removal process, has a plurality of factors influencing the dust removal performance of the electrostatic precipitator, including temperature, dust concentration, smoke components and the like, wherein the airflow distribution has important influence on the performance of the electrostatic precipitator, the dust removal efficiency can be changed by 20-30%, the current common airflow distribution device adopts PP materials, and the PP materials are soft and collapse once the temperature of flue gas at the inlet of the dust remover is too high due to the fact that the PP materials are about 70 ℃, and the structural stability is poor.
Through retrieving, patent number is CN207271444U, discloses a wet electrostatic precipitator entry air current distribution device, and entry air current distribution plate edge downwardly extending can dismantle and be connected with the water conservancy diversion grid, and the entry grid is glass steel, can be high temperature resistant flue gas's high temperature, can not produce deformation, and the structure is more stable firm, however this scheme flue gas distributes through entry air current distribution plate and water conservancy diversion grid, and the air current distribution effect is not ideal.
Disclosure of utility model
Aiming at the defects, the utility model provides the inlet airflow distribution device of the wet electrostatic precipitator, which overcomes the defects of the prior airflow distribution device, such as poor structure, poor stability and unsatisfactory airflow distribution effect; the purposes of high temperature resistance, good structural stability and good air flow distribution effect of the air flow distribution device are realized.
In order to solve the technical problems, the technical scheme of the utility model is as follows: an inlet airflow distribution device of a wet electrostatic precipitator is characterized in that: the device comprises a shell and an ash bucket, wherein the shell sequentially comprises a pore plate, a grid, a first airflow distribution plate group and a second airflow distribution plate group from top to bottom;
the ash bucket is arranged below the shell, an ash outlet is formed in the bottom end of the ash bucket, a smoke outlet is formed in the top end of the shell, and a smoke inlet pipe is communicated with the outer side of the shell.
Further, the first airflow distribution plate group comprises a plurality of first airflow distribution plates, and the bottom surfaces of the first airflow distribution plates are fixedly connected with the shell;
the second air flow distribution plate group comprises a plurality of second air flow distribution plates, and the bottom surfaces of the second air flow distribution plates are fixedly connected with the shell.
Further, the first airflow distribution plates are perpendicular to the air inlet direction of the flue gas inlet pipe;
The second airflow distribution plates are perpendicular to the air inlet direction of the flue gas inlet pipe.
Further, the lengths of the plurality of second airflow distribution plates are sequentially increased from the position close to the flue gas inlet pipe to the position far from the flue gas inlet pipe;
the distance between two adjacent second air flow distribution plates is sequentially increased from being close to the flue gas inlet pipe to being far away from the flue gas inlet pipe.
Further, the first air flow distribution plate and the second air flow distribution plate are arranged at intervals, and the length of the first air flow distribution plate is smaller than that of the second air flow distribution plate.
Further, the lower end of the second airflow distribution plate far away from the smoke inlet pipe is not lower than the lowest position of the inner wall of the smoke inlet pipe.
Further, a plurality of small holes are uniformly formed in the pore plate;
The grid comprises a plurality of grid bars, and the grid bars are arranged in a staggered mode to form a net-shaped structure.
Further, the small holes are regular hexagons.
Further, the cross section of the first air flow distribution plate is triangular.
Further, the grid, the first air flow distribution plate and the second air flow distribution plate are all made of glass fiber reinforced plastic materials.
Compared with the prior art, the utility model adopts the technical proposal and has the following advantages: the flue gas enters the shell through the flue gas inlet pipe, the flue gas pressure is high and the flow velocity is high at the position close to the flue gas inlet pipe, the flue gas pressure is low and the flow velocity is low at the position far away from the flue gas inlet pipe, the distance between two adjacent second airflow distribution plates is sequentially increased from the position close to the flue gas inlet pipe to the position far away from the flue gas inlet pipe, and the flue gas is sequentially intercepted by the second airflow distribution plates to the flue gas with the same flow rate, so that the flue gas flow rate processed between the two adjacent second airflow distribution plates is equal, the vortex and strong turbulence caused by the sudden change of the airflow direction are reduced, the flue gas flow direction is changed from horizontal to vertical upwards, and the flue gas is uniformly distributed for the first time; the flue gas flows upwards through a first airflow distribution plate arranged between two second airflow distribution plates, so that the flue gas is uniformly distributed for the second time, and meanwhile, the cross section of the first airflow distribution plate is triangular, so that resistance of the upward flowing flue gas is reduced; the flue gas continuously flows upwards through the grids, the grids are of a reticular structure made of glass fiber reinforced plastic, and the grids have the advantages of high temperature resistance, corrosion resistance and high strength, so that the flue gas is uniformly distributed for the third time; and then the flue gas passes through the pore plate, and the pores are uniformly arranged, so that the flue gas is uniformly distributed for the fourth time.
The flue gas sequentially passes through the second airflow distribution plate, the first airflow distribution plate, the grid and the pore plate, so that the flue gas is uniformly distributed four times, the uniformity of the flue gas distribution is improved, the dust removal efficiency is improved, and finally dust is removed from a flue gas outlet through a cathode line and an anode tube in the dust remover, which are known techniques and are not described in detail herein.
Drawings
FIG. 1 is a schematic diagram of a wet electrostatic precipitator inlet airflow distribution apparatus in accordance with an embodiment of the present utility model;
FIG. 2 is a side view of a wet electrostatic precipitator inlet gas flow distributor device in accordance with an embodiment of the present utility model;
FIG. 3 is a cross-sectional view at A-A in FIG. 2;
FIG. 4 is a schematic view of a grille according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of an orifice plate according to an embodiment of the present utility model.
In the figure: the device comprises a 1-grid, a 2-pore plate, a 3-shell, a 4-flue gas inlet pipe, a 5-first airflow distribution plate, a 6-flue gas outlet, a 7-ash outlet, an 8-ash bucket, a 9-first airflow distribution plate group, a 10-second airflow distribution plate group, 11-pores, 12-grid bars and 13-second airflow distribution plates.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
1-5, An inlet airflow distribution device of a wet electrostatic precipitator comprises a shell 3 and an ash bucket 8, wherein the shell 3 sequentially comprises a pore plate 2, a grid 1, a first airflow distribution plate group 9 and a second airflow distribution plate group 10 from top to bottom, the ash bucket 8 is arranged below the shell 3, an ash outlet 7 is formed in the bottom end of the ash bucket 8, the ash bucket 8 is a known technology and is not described in detail herein, a flue gas outlet 6 is formed in the top end of the shell 3, and a flue gas inlet pipe 4 is communicated with the outer side of the shell 3.
The grid 1 comprises a plurality of grid bars 12, the grid bars 12 are staggered to form a net structure, the size of the aperture of the net is selected according to daily production data, high-temperature flue gas is effectively penetrated, and dust particles are adsorbed.
The pore plate 2 is uniformly provided with a plurality of small holes 11, and the small holes 11 are regular hexagons.
The first airflow distribution plate group 9 includes a plurality of first airflow distribution plates 5, in this example seven, the sections of the first airflow distribution plates 5 are triangular, the plane of the first airflow distribution plates 5 is perpendicular to the air inlet direction of the flue gas inlet pipe 4, and the bottom surface of the first airflow distribution plates 5 is fixedly connected with the housing 3.
The second airflow distribution plate group 10 comprises a plurality of second airflow distribution plates 13, in this example, six second airflow distribution plates 13 are located on a plane perpendicular to the air inlet direction of the flue gas inlet pipe 4, the bottom surface of each second airflow distribution plate 13 is fixedly connected with the shell 3, the lengths of the second airflow distribution plates 13 from being close to the flue gas inlet pipe 4 to being far away from the flue gas inlet pipe 4 are sequentially increased, and the distance between every two adjacent second airflow distribution plates 13 is sequentially increased from being close to the flue gas inlet pipe 4 to being far away from the flue gas inlet pipe 4, and the lower end of each second airflow distribution plate 13 far away from the flue gas inlet pipe 4 is not lower than the lowest position of the inner wall of the flue gas inlet pipe 4.
The first air flow distribution plate 5 and the second air flow distribution plate 13 are arranged at intervals, the length of the first air flow distribution plate 5 is smaller than that of two adjacent second air flow distribution plates 13, and the first air flow distribution plate 5 is arranged between the two second air flow distribution plates 13.
The grille 1, the first air flow distribution plate 5 and the second air flow distribution plate 13 are all made of glass fiber reinforced plastics.
The using method comprises the following steps: the flue gas enters the shell 3 through the flue gas inlet pipe 4, the flue gas pressure is high and the flow velocity is high at the position close to the flue gas inlet pipe 4, the flue gas pressure is low and the flow velocity is low at the position far away from the flue gas inlet pipe 4, the distance between two adjacent second airflow distribution plates 13 is increased from the position close to the flue gas inlet pipe 4 to the position far away from the flue gas inlet pipe 4, the flue gas is intercepted by the second airflow distribution plates 13 in turn to the flue gas with the same flow rate, so that the flue gas flow rate processed between the two adjacent second airflow distribution plates 13 is equal, the vortex and strong turbulence phenomenon caused by the sudden change of the airflow direction is reduced, the flue gas flow direction is changed from horizontal to vertical upwards, and the flue gas is uniformly distributed for the first time; the flue gas flows upwards through a first airflow distribution plate 5 arranged between two second airflow distribution plates 13, so that the flue gas is uniformly distributed for the second time, and meanwhile, the cross section of the first airflow distribution plate 5 is triangular, so that resistance is reduced for the upward flowing flue gas; the flue gas continuously flows upwards to pass through the grid 1, and the grid 1 is of a reticular structure made of glass fiber reinforced plastic, so that the flue gas is uniformly distributed for the third time, and the grid has the advantages of high temperature resistance, corrosion resistance and high strength; and then the flue gas passes through the pore plate 2, and the pores 11 are uniformly arranged, so that the flue gas is uniformly distributed for the fourth time.
The flue gas sequentially passes through the second airflow distribution plate 13, the first airflow distribution plate 5, the grid 1 and the pore plate 2, so that the flue gas is uniformly distributed four times, the uniformity of the flue gas distribution is improved, the dust removal efficiency is improved, and finally the flue gas passes through the cathode line and the anode tube in the dust remover from the flue gas outlet 6, wherein the cathode line and the anode tube are known technologies and are not described in detail herein.
The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, and yet fall within the scope of the utility model.
Claims (10)
1. An inlet airflow distribution device of a wet electrostatic precipitator is characterized in that: comprises a shell (3) and an ash bucket (8), wherein the shell (3) sequentially comprises a pore plate (2), a grid (1), a first airflow distribution plate group (9) and a second airflow distribution plate group (10) from top to bottom;
The ash bucket (8) is arranged below the shell (3), an ash outlet (7) is formed in the bottom end of the ash bucket (8), a smoke outlet (6) is formed in the top end of the shell (3), and a smoke inlet pipe (4) is communicated with the outer side of the shell (3).
2. A wet electrostatic precipitator inlet gas flow distribution apparatus as claimed in claim 1, wherein: the first air flow distribution plate group (9) comprises a plurality of first air flow distribution plates (5), and the bottom surface of each first air flow distribution plate (5) is fixedly connected with the shell (3);
The second airflow distribution plate group (10) comprises a plurality of second airflow distribution plates (13), and the bottom surface of each second airflow distribution plate (13) is fixedly connected with the shell (3).
3. A wet electrostatic precipitator inlet gas flow distribution apparatus as claimed in claim 2, wherein: the first airflow distribution plates (5) are perpendicular to the air inlet direction of the flue gas inlet pipe (4);
The second airflow distribution plates (13) are perpendicular to the air inlet direction of the flue gas inlet pipe (4).
4. A wet electrostatic precipitator inlet gas flow distribution apparatus as claimed in claim 2, wherein: the lengths of the second airflow distribution plates (13) are sequentially increased from the position close to the flue gas inlet pipe (4) to the position far away from the flue gas inlet pipe (4);
the distance between two adjacent second air flow distribution plates (13) sequentially increases from being close to the flue gas inlet pipe (4) to being far away from the flue gas inlet pipe (4).
5. A wet electrostatic precipitator inlet gas flow distribution apparatus as claimed in claim 2, wherein: the first air flow distribution plate (5) and the second air flow distribution plate (13) are arranged at intervals, and the length of the first air flow distribution plate (5) is smaller than that of the second air flow distribution plate (13).
6. A wet electrostatic precipitator inlet gas flow distribution apparatus as claimed in claim 4, wherein: the lower end of the second airflow distribution plate (13) far away from the flue gas inlet pipe (4) is not lower than the lowest position of the inner wall of the flue gas inlet pipe (4).
7. A wet electrostatic precipitator inlet gas flow distribution apparatus as claimed in claim 1, wherein: a plurality of small holes (11) are uniformly formed in the pore plate (2);
The grid (1) comprises a plurality of grid bars (12), and the grid bars (12) are staggered to form a net structure.
8. A wet electrostatic precipitator inlet gas flow distribution apparatus as claimed in claim 7, wherein: the small holes (11) are regular hexagons.
9. A wet electrostatic precipitator inlet gas flow distribution apparatus as claimed in claim 2, wherein: the cross section of the first air flow distribution plate (5) is triangular.
10. A wet electrostatic precipitator inlet gas flow distribution apparatus as claimed in claim 2, wherein: the grid (1), the first air flow distribution plate (5) and the second air flow distribution plate (13) are all made of glass fiber reinforced plastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322160821.9U CN220803789U (en) | 2023-08-11 | 2023-08-11 | Wet electrostatic precipitator entry air current distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322160821.9U CN220803789U (en) | 2023-08-11 | 2023-08-11 | Wet electrostatic precipitator entry air current distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220803789U true CN220803789U (en) | 2024-04-19 |
Family
ID=90672119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322160821.9U Active CN220803789U (en) | 2023-08-11 | 2023-08-11 | Wet electrostatic precipitator entry air current distribution device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220803789U (en) |
-
2023
- 2023-08-11 CN CN202322160821.9U patent/CN220803789U/en active Active
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