CN207042673U - A kind of wet electrical dust precipitator - Google Patents

Abstract

The utility model discloses a wet type electric precipitator, which comprises an electric precipitator body, an anode and a cathode. The electric precipitator body is a hollow cavity structure and is provided with an inlet and an outlet. The anode and the cathode are respectively arranged and fixed in the hollow cavity of the electric precipitator body. In the body, there are multi-layer mist eliminators at the inner outlet of the electrostatic precipitator body, and a spray system is arranged between the mist eliminators. The utility model has reasonable structural design and outstanding use effect. A flow equalizing device is added at the entrance to allow the flue gas to flow evenly in the electric field of the wet electrostatic precipitator, improve the dust collection efficiency of the dust collector, and at the same time can collect part of the dust in the flue gas, reducing the amount of dust entering the dust collector. The dust concentration and load of the electric field, most of the dust, etc. are ionized and charged in the electric field, and some of the charged dust that is not captured by the electric field and flows to the rear demister device is electrostatically collected by the grounded demister, and the outlet A multi-layer mist eliminator is installed at the place to collect the mist droplets with different particle diameters in layers to achieve ultra-clean emission.

Description

A wet electrostatic precipitator

technical field

The utility model belongs to the technical field of dust removal equipment, in particular to a wet electric dust collector.

Background technique

At present, the air pollution situation in our country is still very serious. The concentration of total suspended particulates in the urban atmospheric environment generally exceeds the standard. Various dust removal equipment are needed to improve the atmospheric environment. The dust removal equipment generally includes wet electrostatic precipitators and dry electrostatic precipitators. The work of the two The principle is similar, the dust or water mist is charged by high-voltage corona discharge, and the charged particles reach the dust collecting plate under the action of the electric field force, but in terms of dust removal method, the dry electrostatic precipitator adopts mechanical Vibrating, while the wet electrostatic precipitator uses flushing fluid to flush the electrodes, and the dust captured on the dust collecting plate is flushed into the ash hopper and then discharged. At the same time, the fine particles in the flue gas can collide with the liquid mist and agglomerate and become larger. Remove fine particles in the flue gas, and prevent secondary dust and other problems.

The utility model patent with the patent application number "2004200824037" discloses "an improved wet electrostatic precipitator", which is mainly composed of an inlet, a discharge electrode, a dust collection plate and an outlet groove plate, and the flue gas dust is collected through an electric field. The post-stage grooved plate makes the flue gas form swirl and refraction. Although the dust content in the flue gas is reduced, the effect of dust removal and fog removal cannot meet the stricter environmental protection emission requirements. Therefore, it is necessary to provide a more efficient The wet electrostatic precipitator further improves the dust removal effect on air pollution and realizes ultra-clean emission.

Utility model content

The utility model provides a wet electrostatic precipitator for the above-mentioned problems, and its purpose is to solve the situation that the traditional wet electrostatic precipitator has a poor demisting effect and cannot meet the more stringent dust removal requirements, so as to further improve the dust removal effect on air pollution and achieve super net emissions.

Technical scheme of the utility model:

A wet electrostatic precipitator, comprising an electrostatic precipitator body, an anode and a cathode, the electric precipitator body is a hollow cavity structure, provided with an inlet and an outlet, and the anode and cathode are respectively arranged and fixed in the hollow cavity of the electrostatic precipitator body , which is characterized in that: the outlet of the electrostatic precipitator body is provided with multi-layer demisters with different droplet particle sizes, and a spray system is arranged between the demisters, and the demisters sequentially include Tube type mist eliminator, plate type mist eliminator, roof type mist eliminator.

The intake modes of the electrostatic precipitator body include upper intake, lower intake and horizontal intake.

The inlet of the electrostatic precipitator body is also provided with a flow equalizing device and a spraying system in sequence.

The anode is of plate type and tube type. The material of the plate type is stainless steel and cloth, etc., the tube type is generally glass fiber reinforced plastic or stainless steel with honeycomb structure, and the cathode is made of stainless steel.

The spraying systems are respectively located above the flow equalizing device, between or above the tube type demister, plate type demister and roof type demister, and the spraying systems are respectively facing the flow equalizing device, Foggers and Ridge Demisters.

The beneficial effects of the utility model:

The utility model has reasonable structural design and outstanding use effect. A flow equalization device is added at the entrance to allow the flue gas to flow evenly in the electric field of the wet electrostatic precipitator, thereby improving the dust collection efficiency of the precipitator. At the same time, the current equalizing device can collect part of the dust in the flue gas, reduce the dust concentration and load entering the electric field, most of the dust, etc. are ionized and charged in the electric field, and some of them are not captured by the electric field and flow to the post-stage demisting device. The charged dust is electrostatically collected by the grounded mist eliminator, and multi-layer mist eliminators for different droplet particle sizes are installed at the outlet, which can collect the mist droplets with different particle diameters in layers to achieve ultra-clean discharge.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among them: 1 electrostatic precipitator body, 2 anode, 3 cathode, 4 inlet, 5 outlet, 6 flow equalization device, 7 spray system, 8 tube type mist eliminator, 9 plate type mist eliminator, 10 ridge type mist eliminator.

detailed description

A wet electrostatic precipitator provided by the utility model includes an electrostatic precipitator body 1, an anode 2 and a cathode 3. The electric precipitator body 1 is a hollow cavity structure, and is provided with an inlet 4 and an outlet 5. The anode 2 and the cathode 3 are respectively arranged Fixed in the hollow cavity of the electrostatic precipitator body 1, the outlet 4 of the electrostatic precipitator body 1 is provided with multi-layer mist eliminators for different droplet particle sizes, and a spray system 7 is arranged between the mist eliminators, The mist eliminator includes tube type mist eliminator 8 , plate type mist eliminator 9 , and roof type mist eliminator 10 in sequence.

The intake modes of the electrostatic precipitator body 1 include upper intake, lower intake and horizontal intake, etc.

The inlet 4 of the electrostatic precipitator body 1 is also provided with a flow equalizing device 6 and a spray system 7 in sequence.

The anode 2 has two types: plate type and tube type. The plate type materials include stainless steel and cloth, etc. The tube type is mainly glass fiber reinforced plastic or stainless steel with honeycomb structure, and the cathode 3 is made of stainless steel.

The spray system 7 is respectively located above the flow equalizing device 6, between or above the pipe type demister 8, the plate type Mist 8, plate type mist eliminator 9 and roof type mist eliminator 10.

The wet electrostatic precipitator provided by the utility model is different in structure and principle from the utility model patent "an improved wet electrostatic precipitator" with the patent application number "2004200824037", as follows:

The structure is different: the utility model is equipped with a flow equalizer 6 with the functions of a flow equalizer and a demister at the flue gas inlet, and a spray system 7 is arranged on the flow equalizer. The anode 2 adopts a plate or tube structure, and the plate material has Stainless steel and cloth, etc., the tube type is mainly glass fiber reinforced plastic or stainless steel with honeycomb structure, the cathode 3 is a stainless steel discharge electrode, and the outlet is a multi-layer demister. The first layer is a tube type demister 8, and the second layer is a plate type demister 9 , the third layer is the roof type mist eliminator 10, and the sprinkler system 7 is also arranged between the mist eliminators.

The principle is different: firstly, the flue gas flow direction of the utility model is upward, downward and horizontal. The dust in the flue gas can be collected in the flow equalization device 6 on the one hand to reduce the dust concentration flowing into the lower electric field, that is, the dust load. On the other hand, it can make the airflow entering the electric field more uniform, and improve the collection efficiency of the electric field; secondly, the utility model uses dust to be ionized and charged in the electric field to collect, and part of the charge that is not captured by the electric field and flows to the rear demisting device Electric dust etc. are electrostatically collected by grounded demisters. At the same time, a multi-layer mist eliminator is installed at the outlet of the utility model, which can collect the mist droplets with different particle diameters in layers to realize ultra-clean discharge.

Specific usage:

A wet electrostatic precipitator is used for atmospheric dust removal. The flue gas enters the electrostatic precipitator body 1 from the ash hopper. In the electrostatic precipitator body 1, it first passes through the lower flow equalization device 6 to remove dust, and the spray device 7 regularly sprays and rinses the flow equalization device. 6. Then it enters the high-voltage electric field composed of anode 2 and cathode 3, and part of the uncaught dust is further collected by the tubular demister 8, and at the same time large-size droplets are collected, and the spray device 7 regularly sprays the flushing pipe Type mist eliminator 8, a small part of the uncollected dust is further collected by plate type mist eliminator 9, and at the same time, medium-sized droplets are captured. The collected dust is further collected by the roof-type demister 10, and at the same time, small-sized mist droplets are captured. The spray device 7 regularly sprays and rinses the roof-type demister 10, and finally it is discharged from the outlet 5 horn clean and without fog Drops of smoke.

The utility model has reasonable structural design and outstanding use effect. The inlet 4 is equipped with a flow equalizing device 6 to allow the flue gas to flow evenly in the electric field, so that the electric field capture efficiency is higher. Ionized charges are collected in the electric field, and part of the charged dust that is not captured by the electric field and flows to the post-stage demister device is electrostatically collected by the grounded demister, and the outlet 5 is equipped with multiple layers for different droplet particle sizes. The mist eliminator can separately collect the mist droplets with different particle diameters in layers to achieve ultra-clean emission.

In summary, the utility model achieves the expected purpose.

Claims (5)

1. a kind of wet electrical dust precipitator, including electric precipitation body, anode and negative electrode, the electric precipitation body is a hollow cavity knot Structure, provided with inlet and outlet, the anode and negative electrode arrange respectively to be fixed in the hollow cavity of electric precipitation body, and its feature exists In：At the electric precipitation body inner outlet be provided with multilayer have for different droplet particles particle diameters set demister, and except Spray system is arranged between day with fog, the demister includes tubular demister, board-like demister, ridge type demister successively.

A kind of 2. wet electrical dust precipitator as claimed in claim 1, it is characterised in that：The intake method of wet scrubber has enterprising The modes such as gas, lower air inlet and horizontal air inlet.

A kind of 3. wet electrical dust precipitator as claimed in claim 1, it is characterised in that：Entrance is also successively in the electric precipitation body Provided with current equalizer and spray system.

A kind of 4. wet electrical dust precipitator as claimed in claim 1, it is characterised in that：The anode is board-like and tubular structure, plate Formula material has stainless steel or cloth etc., and tubular type material is generally the glass steel or stainless steel of honeycomb, and negative electrode is stainless steel.

A kind of 5. wet electrical dust precipitator as claimed in claim 1, it is characterised in that：The spray system is located at current equalizer respectively Top, between tubular demister, board-like demister and ridge type demister or top.