CN106238210A - A kind of wet type porous roller shutter electrostatic precipitator - Google Patents

Abstract

The present invention relates to a kind of wet type porous roller shutter electrostatic precipitator.Its technical scheme is: dry electrostatic cleaner is positioned at gas tank (7) side built with 1 ~ 2 wet type porous roller shutter dust trapping device, wet type porous roller shutter dust trapping device, and baffle plate (5) is positioned at the air inlet side of wet type porous roller shutter dust trapping device.Cleaner unit body (2) bottom is provided with tank (9), tank (9) is positioned between gas tank (7) and ash bucket (11), and the notch of tank (9) is concordant with cleaner unit body (2) bottom；Tank (9) is built with driving cylinder (10), drive the surface of cylinder (10) equipped with follower rollers (6), drive cylinder (10) and follower rollers (6) to drive wet type porous roller shutter (8) between cylinder (10) and follower rollers (6) to connect by being looped around.Front side baffle plate, top flap and the rear side baffle of baffle plate is sequentially fixed at the inwall of body front side board, the inwall of body top board and the inwall of body back side panel.This device has simple in construction, low cost, the feature that reliable and efficiency of dust collection is high.

Description

A wet porous roller shutter electrostatic precipitator

technical field

The invention belongs to the technical field of electrostatic precipitators. Specifically, the utility model is a wet porous roller shutter electrostatic precipitator.

Background technique

At present, various forms of dust removal devices are mainly used to separate and capture dust from dusty flue gas, among which electrostatic precipitators are widely used.

The dry electrostatic precipitator uses corona wire discharge to charge the dust in the flue gas, and the charged dust moves to the dust collecting plate under the action of the electric field force and collects it, so as to separate the dust from the flue gas Purpose, dust removal method generally adopts mechanical vibration, although it has the advantages of large amount of flue gas treatment, low resistance, high dust removal efficiency, etc., but there are also some shortcomings, mainly because of its low collection efficiency for fine particles, and It is easy to generate secondary dust during the vibration cleaning process.

The wet electrostatic precipitator generally adopts the method of water spray overflow to form a layer of water film on the surface of the dust collecting plate, so that the dust and water deposited on the dust collecting plate are discharged through the ash hopper; the wet electrostatic precipitator Although it can effectively solve the secondary dust problem, it still needs further improvement due to its complex structure, high cost, serious corrosion of internal parts, and low capture efficiency of fine particles.

Contents of the invention

The invention aims to overcome the defects of the prior art, and aims to provide a wet-type porous roller shutter electrostatic precipitator with high trapping efficiency for fine particles in flue gas, low cost, simple structure and reliable operation.

In order to achieve the above purpose, the technical solution adopted in the present invention is: the wet porous roller shutter electrostatic precipitator is composed of a dry electrostatic precipitator, a baffle and 1~2 wet porous roller shutter dust collectors. The dry electrostatic precipitator is equipped with 1~2 wet porous roller shutter dust collectors, 1~2 wet porous roller shutter dust collectors are located on the side of the air outlet box, and the baffle is located on the intake side of the wet porous roller shutter dust collector. side.

The structure of the dry electrostatic precipitator is: the left side and the right side of the dust collector body are provided with an air inlet box and an air outlet box correspondingly, the bottom of the dust collector body is evenly provided with 2~4 ash hoppers, and the dust collector body There are evenly distributed dust-collecting plates parallel to the airflow direction, and corona wires are uniformly arranged between the dust-collecting plates.

The wet porous roller shutter dust collection device is composed of a wet porous roller shutter, a driving roller, a driven roller, a driving motor and a water tank. There is a water tank at the bottom of the dust collector body. The water tank is located between the air outlet box and the ash hopper. The water tank is perpendicular to the airflow direction. The notch of the water tank is flush with the bottom of the dust collector body. The driving roller is installed in the water tank, and the roller shafts at both ends of the driving roller are installed through bearings. On the front side plate and the rear side plate corresponding to the water tank, the drive roller is connected with the drive motor shaft. A driven roller is installed directly above the driving roller, and the roller shafts at both ends of the driven roller are installed on the upper part of the front side plate and the rear side plate of the body corresponding to the dust collector body through bearings; the driving roller and the driven roller are passed around the driving roller It is connected with the wet porous roller blind between the driven rollers, the wet porous roller blind (8) is evenly opened with small holes, and the opening rate is 20-50%.

The baffle is a door frame structure, and the baffle is an integral body composed of a front side baffle, a top baffle and a rear side baffle; the dust collector body is composed of a body front side plate, a body top plate, a body rear side plate and The whole body surrounded by the bottom plate. The front side baffle, the top baffle and the rear side baffle are fixed on the inner wall of the front side plate of the body, the inner wall of the top plate of the body and the inner wall of the rear side plate of the body in sequence, and the height of the front side baffle is the same as the height of the inner wall of the front side plate of the body , the width of the front side baffle is equal to 1.2~1.5 times the distance between the front side of the wet porous roller blind and the front side board of the body, and the front side baffle is the same as the rear side baffle. The length of the top baffle is equal to the distance between the front side baffle and the rear side baffle, and the width of the top baffle is equal to 1.2~1.5 times of the minimum distance between the wet porous roller blind and the top plate of the body.

The length of the water tank is equal to the width of the dust collector body, the width of the water tank is equal to 1.3 to 1.5 times the diameter of the driving drum, and the height and width of the water tank are equal; the bottom of the water tank is provided with water inlet holes, and the bottom or side walls of the water tank are provided with There are water holes.

The diameter of the driving drum is 200-400 mm; the diameter of the driven drum is equal to that of the driving drum.

Described aperture is a kind of in circular hole, square hole and strip hole; Wherein: the diameter of circular hole is 40～60mm; The side length of square hole is 30～50mm; The width of strip hole is 10～60mm. 20mm, the aspect ratio of the strip hole is (5~10):1.

Owing to adopting above-mentioned technical scheme, the present invention has following positive effect:

1. In the present invention, 1 to 2 wet porous roller shutter dust collectors are arranged on the side of the air outlet box close to the dry electrostatic precipitator. The wet porous roller shutter dust collector is mainly composed of a wet porous roller shutter, a driving roller, and a driven roller , drive motor and water tank, simple structure, easy maintenance.

2. The water tank of the present invention stores 2/3~3/4 of the water tank height, and the driving motor drives the driving roller and the driven roller to run. The wet porous roller blind is soaked when passing through the water in the water tank, and the wet porous roller blind The dust is collected under the cyclic rotation of the driving drum and the driven drum, and the cyclic rotation ensures the continuous operation of the device with high working efficiency.

3. When the flue gas enters the dust collector body from the air intake box, part of the charged dust is collected by the dust collecting plate under the action of the electric field force; the remaining dust moves with the airflow through the baffle and contacts with the wet porous roller shutter. The remaining dust is captured by the wet porous roller blind for 2 or 4 times under the action of inertial collision and diffusion; after the wet porous roller blind rotates in the water tank and contacts with water, the water will wash off the dust attached to the wet porous roller blind. dust, and further soak the wet porous roller blind; the wet porous roller blind after being washed and soaked collects dust again, and the wet porous roller blind with dust attached is rotated again until the sink is washed and soaked, and so on. The purpose of wet dust removal. The sewage in the water tank is regularly discharged from the water outlet hole, and at the same time, water is supplied to the water tank through the water inlet hole, so that the constant water level in the water tank is guaranteed.

4. The invention can not only effectively improve the dust removal efficiency of the electrostatic precipitator for fine particles, but also can be used to replace the air flow uniform distribution plate near the side of the air outlet box of the dust collector, so that the resistance of the dust collector remains basically unchanged.

Therefore, the device has the characteristics of simple structure, low cost, reliable operation and high dust removal efficiency.

Description of drawings

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is A-A sectional view of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, which are not intended to limit its protection scope.

Example 1

A wet porous roller shutter electrostatic precipitator. As shown in Figures 1 and 2, the wet porous roller shutter electrostatic precipitator consists of a dry electrostatic precipitator, a baffle (5) and a wet porous roller shutter dust collector. The dry electrostatic precipitator is equipped with a wet porous roller shutter dust collector, a wet porous roller shutter dust collector is located on the side of the outlet box (7), and the baffle (5) is located at the intake of the wet porous roller shutter dust collector. side.

As shown in Fig. 1 and Fig. 2, the structure of the dry electrostatic precipitator is: the left and right sides of the precipitator body (2) are respectively provided with an air inlet box (1) and an air outlet box (7). The bottom of the main body (2) is evenly provided with 3 ash hoppers (11), and the dust collector body (2) is evenly distributed with dust collection plates (4) parallel to the airflow direction, and the dust collection plates (4) are evenly spaced. The ground is provided with a corona wire (3).

As shown in Figures 1 and 2, the wet porous roller shutter dust collector consists of a wet porous roller shutter (8), a driving drum (10), a driven drum (6), a driving motor (12) and a water tank (9). There is a water tank (9) at the bottom of the dust collector body (2). The water tank (9) is located between the air outlet box (7) and the ash hopper (11). The water tank (9) is perpendicular to the air flow direction. The bottom of the device body (2) is flush, and the drive roller (10) is housed in the water tank (9). (10) is connected with drive motor (12) shaft. The driven roller (6) is installed directly above the driving roller (10), and the roller shafts at both ends of the driven roller (6) are installed on the upper part of the corresponding body front side plate and body rear side plate of the dust collector body (2) through bearings ; the driving roller (10) and the driven roller (6) are connected by a wet porous roller blind (8) that surrounds the driving roller (10) and the driven roller (6), and the wet porous roller blind (8) is uniformly There are small holes, and the opening rate is 20~40%.

As shown in Figures 1 and 2, the baffle (5) is a door frame structure, and the baffle (5) is an integral body composed of a front side baffle, a top baffle and a rear side baffle; (2) It is a whole body surrounded by the front side plate of the body, the top plate of the body, the rear side plate of the body and the bottom plate of the body. The front side baffle, the top baffle and the rear side baffle are fixed on the inner wall of the front side plate of the body, the inner wall of the top plate of the body and the inner wall of the rear side plate of the body in sequence, and the height of the front side baffle is the same as the height of the inner wall of the front side plate of the body , the width of the front side baffle is equal to 1.2～1.4 times of the distance between the front side of the wet porous roller blind (8) and the body front side plate, and the front side baffle is the same as the rear side baffle. The length of the top baffle is equal to the distance between the front side baffle and the rear side baffle, and the width of the top baffle is equal to 1.2 to 1.4 times of the minimum distance between the wet porous roller blind (8) and the body top plate.

The length of the water tank (9) is equal to the width of the precipitator body (2), the width of the water tank (9) is equal to 1.3 to 1.4 times the diameter of the driving drum (10), and the height and width of the water tank (9) are equal; The bottom of (9) is provided with water inlet hole, and the bottom or side wall of water tank (9) is provided with water outlet hole.

The diameter of the driving drum (10) is 200-300 mm; the diameter of the driven drum (6) is equal to the diameter of the driving drum (10).

The small hole is a circular hole, and the diameter of the circular hole is 40-60 mm.

Example 2

A wet porous roller shutter electrostatic precipitator. Except following technical parameter, all the other are with embodiment 1:

The dry electrostatic precipitator is equipped with 2 wet porous roller shutter dust collectors, the 2 wet porous roller shutter dust collectors are located on the side of the outlet box (7), and the 2 wet porous roller shutter dust collectors are parallel to each other;

2 or 4 ash hoppers (11) are uniformly arranged on the bottom of the dust collector body (2);

The width of the front baffle is equal to 1.3 to 1.5 times the distance between the front side of the wet porous roller blind (8) and the front side plate of the body; the width of the top baffle is equal to 1.3 times the minimum distance between the wet porous roller blind (8) and the top plate of the body ~1.5 times;

The width of the water tank (9) is equal to 1.4 to 1.5 times the diameter of the driving drum (10);

The diameter of the driving drum (10) is 300 ~ 400mm;

The wet porous roller blind (8) is evenly provided with small holes, and the opening rate is 30-50%. Described aperture is a kind of in square hole and strip hole, and wherein: the side length of square hole is 30～50mm; The width of strip hole is 10～20mm, and the aspect ratio of strip hole is (5～10 ): 1.

This embodiment has the following positive effects:

1. In this specific embodiment, 1 to 2 wet porous roller shutter dust collection devices are arranged on the side of the air outlet box (7) close to the dry electrostatic precipitator. The wet porous roller shutter dust collection device is mainly composed of wet porous roller shutters (8 ), a driving drum (10), a driven drum (6), a driving motor (12) and a water tank (9), the structure is simple and the maintenance is convenient.

2. In the water tank (9) of this specific embodiment, water with a height of 2/3~3/4 of the water tank (9) is stored, and the driving motor (12) drives the driving roller (10) and the driven roller (6) to run, and the wet type The porous roller shutter (8) is soaked when passing through the water in the water tank (9), and the wet porous roller shutter (8) collects dust under the circular rotation of the driving drum (10) and the driven drum (6), and the circular rotation ensures The continuous operation of the device is ensured, and the working efficiency is high.

3. When the flue gas enters the dust collector body (2) from the air intake box (1), part of the charged dust is collected by the dust collecting plate (4) under the action of the electric field force; the remaining dust passes through the baffle (5) Moving with the airflow and coming into contact with the wet porous roller shutter (8), the remaining dust is captured by the wet porous roller shutter (8) for 2 or 4 times under the action of inertial collision and diffusion; it circulates to the water tank (9) After the wet porous roller blind (8) contacts with water, the water will wash off the dust attached to the wet porous roller blind (8), and further soak the wet porous roller blind (8); the wet porous roller blind (8) after being washed and soaked The roller shutter (8) collects the dust again, and the wet porous roller shutter (8) attached with the dust rotates again to the sink (9) to be washed and soaked, and so on, so as to achieve the purpose of wet dust removal. The sewage in the water tank (9) is regularly discharged by the water outlet hole, and the water tank (9) is supplied with water through the water inlet hole simultaneously, which ensures the constant water level in the water tank (9).

4. This specific embodiment can not only effectively improve the dust removal efficiency of the electrostatic precipitator for fine particles, but also can be used to replace the airflow uniform distribution plate near the side of the air outlet box (7) of the dust collector, so that the resistance of the dust collector remains basically unchanged.

Therefore, the device has the characteristics of simple structure, low cost, reliable operation and high dust removal efficiency.

Claims (4)

1. a wet type porous roller shutter electrostatic precipitator, it is characterised in that described wet type porous roller shutter electrostatic precipitator is quiet by dry type Electric cleaner, baffle plate (5) and 1 ~ 2 wet type porous roller shutter dust trapping device composition；Dry electrostatic cleaner is built with 1 ~ 2 wet type Porous roller shutter dust trapping device, 1 ~ 2 wet type porous roller shutter dust trapping device is positioned at gas tank (7) side, and it is many that baffle plate (5) is positioned at wet type The side of hole roller shutter dust trapping device air inlet；

The structure of described dry electrostatic cleaner is: cleaner unit body (2) left side and right side are provided with inlet box (1) accordingly and go out Gas tank (7), is provided with 2 ~ 4 ash buckets (11) bottom even of cleaner unit body (2), is evenly equipped with parallel in cleaner unit body (2) In the dust collecting pole plate (4) of airflow direction, between dust collecting pole plate (4), it is evenly provided with corona wire (3)；

Wet type porous roller shutter dust trapping device is by wet type porous roller shutter (8), driving cylinder (10), follower rollers (6), driving motor (12) form with tank (9)；Cleaner unit body (2) bottom is provided with tank (9), and tank (9) is positioned at gas tank (7) and ash bucket (11) Between, tank (9) is vertical with airflow direction, and the notch of tank (9) is concordant with cleaner unit body (2) bottom, and tank (9) is built with driving Dynamic cylinder (10), drives the drum shaft at cylinder (10) two ends to be arranged on front side board corresponding to tank (9) and back side panel by bearing, Drive cylinder (10) and be connected with driving motor (12) axle；Drive the surface of cylinder (10) equipped with follower rollers (6), follower rollers (6) drum shaft at two ends is arranged on body front side board corresponding to cleaner unit body (2) and the top of body back side panel by bearing； Drive cylinder (10) and follower rollers (6) by being looped around the wet type porous roller shutter driven between cylinder (10) and follower rollers (6) (8) connecting, described wet type porous roller shutter (8) has aperture equably, and percent opening is 20 ~ 50%；

Described baffle plate (5) is door case type structure, the entirety that baffle plate (5) is made up of front side baffle plate, top flap and rear side baffle； Described cleaner unit body (2) is the entirety surrounded by body front side board, body top board, body back side panel and body base plate；Front side Baffle plate, top flap and rear side baffle are sequentially fixed at the inwall of body front side board, the inwall of body top board and body back side panel Inwall, the height of front side baffle plate is identical with the inside wall height of body front side board, the width of front side baffle plate equal to wet type porous roll up Curtain (8) front side with 1.2 ~ 1.5 times of body front side board spacing, front side baffle plate is identical with rear side baffle；The length of top flap Equal to the distance between front side baffle plate and rear side baffle, the width of top flap is equal to wet type porous roller shutter (8) and body top board Between 1.2 ~ 1.5 times of minimum range.

Wet type porous roller shutter electrostatic precipitator the most according to claim 1, it is characterised in that the length of described tank (9) with remove The width of dirt device body (2) is equal, and the width of tank (9) is equal to drive 1.3 ~ 1.5 times of the diameter of cylinder (10), tank (9) Height and width equal；The bottom of tank (9) is provided with inlet opening, and bottom or the sidewall of tank (9) are provided with apopore.

Wet type porous roller shutter electrostatic precipitator the most according to claim 1, it is characterised in that described driving cylinder (10) A diameter of 200 ~ 400mm；The diameter of follower rollers (6) and the equal diameters driving cylinder (10).

Wet type porous roller shutter electrostatic precipitator the most according to claim 1, it is characterised in that described aperture is circular port, side One in shape hole and bar hole；Wherein: a diameter of 40 ~ 60mm of circular port, the length of side of square opening is 30 ~ 50mm, bar hole Width be 10 ~ 20mm, the length-width ratio of bar hole is (5 ~ 10): 1.