CN219483002U

CN219483002U - Wet-type electric precipitation tower

Info

Publication number: CN219483002U
Application number: CN202320477925.XU
Authority: CN
Inventors: 周阳; 江蕾; 刘娟; 徐兵; 李双
Original assignee: SUZHOU AITESI ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Current assignee: SUZHOU AITESI ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-08-08
Anticipated expiration: 2033-03-14

Abstract

The utility model discloses a wet electric dust collector in the technical field of dust collection, which aims to solve the problems of lower dust collection efficiency, small specific resistance of dust and the like of a wet electrostatic dust collector in the prior art, and comprises a tower body, wherein a flue inlet, a horn mouth, a dust collecting chamber and a flue outlet are sequentially arranged in the tower body from bottom to top, and the horn mouth is used for uniformly distributing flue gas in the tower body; the dust collecting chamber is used for humidifying and condensing the flue gas, and is sequentially provided with a humidifying system, a dust collecting system and a flushing and spraying system from bottom to top, wherein the dust collecting system comprises a plurality of dust collecting pipes, and discharge electrodes are hung inside the dust collecting pipes. The utility model can effectively reduce the flow rate of the flue gas, realize the uniform distribution of the flue gas in the tower, and facilitate the collection of dust particles through humidification and condensation, thereby improving the dust removal efficiency.

Description

Wet-type electric precipitation tower

Technical Field

The utility model relates to a wet electric dust removal tower, and belongs to the technical field of dust removal.

Background

Wet electrostatic precipitators are widely used in industry to reduce the emission of fine Particulate Matter (PM) and other pollutants by electrostatic precipitation, wherein particles in a gas stream are charged and then removed by an electric field.

The main factors influencing the dust removal efficiency of wet electric dust remover are: smoke properties, equipment conditions and operating conditions. The specific resistance and corona current of dust are directly influenced by the smoke properties such as the humidity and temperature of smoke, the particle size distribution of particles and the like, the specific resistance of the dust is influenced by the equipment conditions such as the electrode form, the airflow distribution, the power supply and the like, and meanwhile, the dust collection and secondary dust raising state are determined. And corona current, dust specific resistance and dust collection and secondary dust emission are factors for determining dust removal efficiency.

With the increasing wide application of wet electric dust collectors, the large improvement of wet electric dust collection efficiency with low cost is a research topic of a large number of researchers.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides a wet electric dust removal tower which can effectively reduce the flow rate of flue gas, realize uniform distribution of the flue gas in the tower and facilitate collection of dust particles through humidification and condensation, thereby improving the dust removal efficiency.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme: the wet electric dust removal tower comprises a tower body, wherein a flue inlet, a horn mouth, a dust collection chamber and a flue outlet are sequentially formed in the tower body from bottom to top, and the horn mouth is used for uniformly distributing flue gas in the tower body; the dust collecting chamber is used for humidifying and condensing smoke dust, and is sequentially provided with a humidifying system, a dust collecting system and a flushing and spraying system from bottom to top, wherein the dust collecting system comprises a plurality of dust collecting pipes, and discharge electrodes are hung inside the dust collecting pipes.

Optionally, the flue inlet is arranged at one side below the tower body, a baffle plate is vertically arranged at the inner wall of the tower body above the flue inlet, and the baffle plate is used for adjusting the airflow direction of the flue gas.

Optionally, the included angle between the baffle plate and the vertical upward air flow ranges from 0 degrees to 45 degrees, and the included angle and the size of the baffle plate are gradually increased from the flue inlet to the bell mouth.

Optionally, a plurality of guide plates are vertically arranged on the inner wall of the horn mouth, and the included angle between each guide plate and the vertical upward air flow is 15-45 degrees.

Optionally, the juncture of the bell mouth bottom and the flue inlet, the humidification system and the flushing spray system are all provided with humidification coacervates, the humidification coacervates comprise a plurality of groups of spray pipelines which are arranged in parallel, the spray pipelines are provided with a plurality of nozzles, and the orientations of the nozzles positioned on the juncture of the bell mouth bottom and the flue inlet and the spray pipelines in the humidification system are mirror images.

Optionally, further comprising a gas flow redistribution plate disposed below the humidified coacervate within the humidification system in the form of a grid with a spacing between the gas flow redistribution plates of not less than 50cm.

Optionally, the discharge electrode hanger is hung at the center of the dust collecting pipe, the end parts of the discharge electrode hanger are connected with the hanger, the hanger at the upper part is connected with the high-voltage discharge electrode, and the hanger at the lower part is provided with a heavy hammer.

Optionally, the high-voltage discharge electrode is placed in an insulation box, and the insulation box is arranged on two sides of the flue outlet.

Optionally, the bottom of the tower body is connected with a waste water bucket groove, and the waste water bucket groove is used for receiving waste water containing smoke dust.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the horn mouth is additionally arranged above the flue inlet, so that the kinetic energy of flue gas can be reduced, the flow rate of the flue gas is reduced, and meanwhile, the guide plate is additionally arranged in the horn mouth, so that the vertical upward air flow is fully distributed on the whole tower body, the condition of partial vacuum or vortex mixing is avoided, and the dust collection efficiency of the dust collection tower can be effectively improved by being matched with the dust collection chamber to humidify and condense the flue dust;

the utility model has the advantages that the juncture of the bottom of the bell mouth and the inlet of the flue, the humidifying system and the flushing and spraying system are respectively provided with the humidifying coacervate, so that the specific resistance of smoke dust particles can be improved, and meanwhile, enough space is reserved at the lower part of the dust collecting chamber to facilitate the condensation and growth of fine particles, thereby improving the collection of PM2.5 and particles with the particle size below the PM 2.5;

the utility model is also provided with the baffle plate and the airflow redistribution plate, the baffle plate can ensure the vertical upward unidirectional movement of the flue gas, the airflow redistribution plate can further reduce the airflow kinetic energy of the flue gas, ensure the uniform and similar airflow rate of the flue gas entering the dust collection chamber, and avoid the occurrence of conditions of unfavorable wet electric dust collection efficiency such as secondary backflow and the like.

Drawings

FIG. 1 is a schematic diagram showing a front view of a wet electric dust collector according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing the structure of a dust collecting pipe of a wet type electric dust collector according to an embodiment of the present utility model;

in the figure: 1 flue inlet, 2 horn mouth, 3 dust collecting chamber, 4 dust collecting pipe, 5 washing spray system, 6 baffle, 7 guide plate, 8 air flow distribution plate, 9 spray pipeline, 10 flue outlet, 11 insulating box, 12 waste water bucket groove, 13 high voltage discharge electrode, 14 discharge electrode, 15 hanging beam, 16 weight.

Description of the embodiments

The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Examples

As shown in fig. 1, the wet electric precipitation tower provided by the embodiment of the utility model comprises a tower body, wherein the tower body can be a vertical square tower, and a flue inlet 1, a bell mouth 2, a dust collection chamber 3 and a flue outlet 10 are sequentially arranged in the tower body from bottom to top.

The flue inlet 1 is arranged on one side of the bottom of the tower body, the baffle plates 6 used for adjusting the direction of the flue gas flow are vertically arranged on the inner wall of the tower body above the flue inlet 1, the number of the baffle plates 6 is multiple, the size of the baffle plates is different, the included angle range between the baffle plates and the vertical upward gas flow is 0-45 degrees, and the size and the included angle of the baffle plates 6 can be set to be gradually increased from the flue inlet 1 to the bell mouth according to actual conditions, so that the vertical upward unidirectional flow of the flue gas is ensured.

The horn mouth 2 is square, one end with small caliber is connected with the flue inlet 1, and one end with large caliber is connected with the bottom of the dust collecting chamber 3. The inside at horn mouth 2 is equipped with a plurality of guide plates 7 perpendicularly, and the contained angle scope of guide plate 7 and the vertically ascending air current is 15 ~45 for vertical ascending air current is covered with whole tower body, is favorable to reducing the flue gas kinetic energy, realizes the reduction of flue gas velocity of flow, avoids partial vacuum or has the condition that the vortex is mixed and returned, and then influences the dust removal efficiency of dust removal tower.

The dust collecting chamber 3 is used for humidifying and condensing smoke dust, and is provided with a humidifying system, a dust collecting system and a flushing and spraying system 5 from bottom to top in sequence. The juncture of the bottom of the bell mouth 2 and the flue inlet 1, the humidifying system and the flushing spray system 5 are all provided with humidifying coacervates, the humidifying coacervates comprise a plurality of groups of spray pipelines 9 which are arranged in parallel, and a plurality of nozzles are uniformly distributed on the spray pipelines 9.

Specifically, the juncture of the bottom of the bell mouth 2 and the flue inlet 1 and the spraying pipeline 9 in the humidifying system mainly humidifies smoke dust, the specific resistance of smoke dust particles is improved, the spray nozzles on the spraying pipeline 9 on the upper side and the lower side are arranged in a mirror image mode, and meanwhile, enough space is reserved at the lower part of the dust collection chamber 3, so that the condensation and growth of fine particles are facilitated, and PM2.5 and the collection of the particles with the lower particle size are effectively improved.

The spraying pipeline in the flushing spraying system 5 has the function of removing smoke dust particles in the smoke through flushing, and finally the treated smoke flows out from the flue outlet 10, and the flue outlet 10 takes micro positive pressure. The bottom of the tower body is connected with the wastewater barrel groove 12, and the wastewater which is washed down and carries dust particles is received into the wastewater barrel groove 12.

Examples

As shown in fig. 2, the dust collecting system of the present embodiment includes a plurality of dust collecting pipes 4, and the dust collecting pipes 4 may be square pipes, and the material is FRP, but not limited thereto, and other suitable shapes and materials may be used. A discharge electrode 14 is hung at the position of the central point inside the dust collecting tube 4, the tip of the discharge electrode 14 discharges, and the distance between two adjacent groups of discharge electrodes 14 is 150-300 mm.

The upper and lower ends of the discharge electrode 14 are connected with the suspension 15, the suspension 15 at the upper part is connected with the high-voltage discharge electrode 13, the high-voltage discharge electrode 13 is used for providing power for the discharge electrode 14, the number of the high-voltage discharge electrode is 2, and the high-voltage discharge electrode is respectively placed in the insulating boxes 11 at two sides of the flue outlet 10. The lower suspension 15 is provided with a weight 16, and the weight 16 is used for keeping the discharge electrode 14 vertically upwards all the time.

The inside and the bottom of the humidification system are respectively provided with an air flow distribution plate 8, the air flow distribution plates 8 are positioned below the humidification coacervate, the air flow distribution plates are in a grid form, the aperture is about 50mm, the aperture ratio is not less than 70 percent, the number is 2, and the distance between the two air flow redistribution plates 8 is not less than 50cm. The air flow distribution plate 8 can further reduce the air flow kinetic energy, ensure uniform air flow rate and similar air speed entering the dust collection tube 4, and avoid the occurrence of conditions of adverse wet electric dust removal efficiency such as secondary reflux and the like.

The working principle of the utility model is as follows: the flue gas enters from the flue inlet 1, is adjusted to be in a vertical upward airflow direction after passing through the baffle plate 6, then passes through the horn mouth 2 and the airflow distribution plate 8, the horn mouth 2 evenly distributes the flue gas on the whole tower body, the flue gas is humidified through the junction of the bottom of the horn mouth 2 and the flue inlet 1 and the spray pipeline 9 in the humidifying system, then the dust collecting pipe 4 condenses the flue gas, the PM2.5 and the particulate matters with the lower particle size are collected, the condensed flue gas is flushed by the flushing spray system 5, the flue gas is collected in the waste water barrel groove 12 at the bottom of the tower body along with the spray liquid, and the treated flue gas flows out from the flue outlet 10 at the top of the tower body.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims

1. A wet electric precipitation tower, characterized in that: the flue gas collecting device comprises a tower body, wherein a flue inlet, a horn mouth, a dust collecting chamber and a flue outlet are sequentially arranged in the tower body from bottom to top, and the horn mouth is used for uniformly distributing flue gas in the tower body; the dust collecting chamber is used for humidifying and condensing smoke dust, and is sequentially provided with a humidifying system, a dust collecting system and a flushing and spraying system from bottom to top, wherein the dust collecting system comprises a plurality of dust collecting pipes, and discharge electrodes are hung inside the dust collecting pipes.

2. A wet electric precipitation tower according to claim 1, wherein: the flue inlet is arranged on one side below the tower body, a baffle plate is vertically arranged on the inner wall of the tower body above the flue inlet, and the baffle plate is used for adjusting the airflow direction of the flue gas.

3. A wet electric precipitation tower according to claim 2, wherein: the included angle between the baffle plate and the vertical upward air flow ranges from 0 degrees to 45 degrees, and the size of the baffle plate is gradually increased from the flue inlet to the bell mouth.

4. A wet electric precipitation tower according to claim 1, wherein: the horn mouth inner wall is vertically provided with a plurality of guide plates, and the included angle range between the guide plates and the vertical upward air flow is 15-45 degrees.

5. A wet electric precipitation tower according to claim 1, wherein: the device is characterized in that a humidifying coacervate is arranged at the junction of the bottom of the horn mouth and the flue inlet, the humidifying system and the flushing spraying system, the humidifying coacervate comprises a plurality of groups of spraying pipelines which are arranged in parallel, a plurality of nozzles are distributed on the spraying pipelines, and the directions of the nozzles positioned at the junction of the bottom of the horn mouth and the flue inlet and on the spraying pipelines in the humidifying system are mirror images.

6. A wet electric precipitation tower according to claim 5, wherein: also included is a gas flow redistribution plate disposed below the humidification coacervate within the humidification system in the form of a grid with a spacing between the gas flow redistribution plates of not less than 50cm.

7. A wet electric precipitation tower according to claim 1, wherein: the discharge electrode hanger is hung at the center of the dust collecting pipe, the end parts of the discharge electrode hanger are connected with the hanger bracket, the hanger bracket positioned at the upper part of the discharge electrode hanger is connected with the high-voltage discharge electrode, and the hanger bracket positioned at the lower part of the discharge electrode hanger bracket is provided with a heavy hammer.

8. A wet electric precipitation tower according to claim 7, wherein: the high-voltage discharge electrode is placed in the insulation box, and the insulation box is arranged on two sides of the flue outlet.

9. The wet electric precipitation tower according to any one of claims 1 to 8, wherein: the bottom of the tower body is connected with a waste water bucket groove, and the waste water bucket groove is used for receiving waste water containing dust particles.