CN203874903U - Wet-type electric filtration device with high gas speed and high efficiency for deeply treating PM2.5 - Google Patents

Abstract

The utility model relates to a wet-type electric filtration device with high gas speed and high efficiency for deeply treating PM2.5. The wet-type electric filtration device comprises a main shell and an electrode separation device which is arranged in the main shell, wherein a lower gas chamber is formed in the lower part of the main shell, and an upper gas chamber is formed in the upper part of the main shell; a waste gas inlet and a drain outlet are formed in the lower gas chamber; a gas distribution device is arranged in a junction between the lower gas chamber and the main shell; a gas outlet is formed in the top of the upper gas chamber; the electrode separation device comprises a negative electrode device, a positive electrode device and a power supply device; the positive electrode device is a cellular conductive composite material tube bundle; the negative electrode device comprises a negative electrode connection plate arranged in the upper gas chamber and a plurality of negative electrode guide wires which are suspended on a negative electrode connection plate; the negative electrode guide wires penetrate through the cellular conductive composite material tube bundle in a one-to-one correspondence manner; a counter weight is connected with the lower end of each negative electrode guide wire. With the adoption of the wet-type electric filtration device with high gas speed and high efficiency for deeply treating PM2.5, an ideal effect of collecting micro and viscous PM2.5 dust with high resistance ratio, aerosol, tiny metal particles, dioxin and the like can be achieved.

Description

PM2.5 deep treatment high-speed high-efficiency wet electric filter equipment

technical field

The utility model relates to the technical field of electric dust removal equipment, in particular to high-gas-velocity and high-efficiency wet electric filter equipment for PM2.5 deep treatment. the

Background technique

"China is currently one of the areas with the most serious PM2.5 pollution in the world." The PM2.5 index of London, which has the worst air pollution in history, is about 10 to 20 micrograms per cubic meter, while Beijing reached 90 micrograms per cubic meter at its peak. About 50 micrograms per cubic meter in Guangzhou and other cities. PM2.5 fine particles are carriers of viruses, bacteria, and harmful substances. The physiological structure of the human body determines that there is no ability to filter or block PM2.5. After desulfurization and denitrification in petroleum, chemical, electric power, metallurgy, cement, textile, biology, medicine and other industries, the wet flue gas contains a large amount of fine dust, aerosol, acid mist, heavy metal and other fine particle pollutants (PM2.5). Smog requires a kind of environmental protection technology and equipment with good dust removal effect. the

At present, the domestic dust removal equipment for capturing combustion source particles mainly includes: mechanical dust collector, bag dust collector, electrostatic precipitator, electric bag composite dust collector, etc. However, these devices can only remove pollutants with a minimum particle size of 40-50 μm, and liquid droplets with a particle size of less than 40 μm, fine dust, and aerosol particles cannot be removed. That is, it has no effect or poor effect on PM2.5 fine particles. the

Utility model content

The technical problem to be solved by the utility model is: to overcome the difficulty in removing fine particle pollutants in the prior art and the insulation box in the prior art has hot smoke, fine dust, and mist entering, and the reliability of the insulation box is affected, resulting in The technical problem of the "pollution flashover" phenomenon provides a PM2.5 deep treatment high-speed and high-efficiency wet electric filtration equipment, which can effectively and efficiently remove fine particle pollutants. the

The technical solution adopted by the utility model to solve the technical problems is: a kind of PM2.5 deep control high gas velocity high-efficiency wet electric filter equipment, including the main casing and the electrode separation device arranged in the main casing, the main casing The lower part of the body is provided with a lower air chamber, and the upper part is provided with an upper air chamber. The lower air chamber is provided with a waste gas inlet and a sewage outlet. The connection between the lower air chamber and the main shell is provided with a gas distribution device. The top of the upper air chamber has an exhaust port; the electrode separation device includes a cathode device, an anode device and a power supply device; the anode device is a honeycomb conductive composite tube bundle; the cathode device includes a a cathode connection plate and a plurality of cathode wires suspended on the cathode connection plate, the cathode wires are arranged in the honeycomb conductive composite tube bundle one by one, and a weight is connected to the lower end of each cathode wire; the power supply device It includes an insulating box located on the top of the upper air chamber, and an electric energy introduction device is arranged inside the insulating box, and the electric energy introduction device is connected with the cathode connection plate through wires. The insulating box is provided with a positive pressure protection device that blows hot air into the insulating box. Prevent hot smoke, fine dust, and mist from entering, ensure more reliable insulation of the cabinet, and effectively avoid the occurrence of "pollution flashover". the

Further, the upper air chamber is also provided with a spraying device for improving the electrical conductivity in the main casing. It is beneficial to increase the moisture in the flue gas flow and enhance the conductivity, and accelerate the migration speed of dust particles in the corona area to the anode. the

Further, in order to make the gas pass through the electrode separation device more uniformly, the gas distribution device includes a gas guide plate and a gas distribution plate, and the gas distribution plate is located on the upper part of the gas guide plate. the

Further, in order to prevent the weights from shaking, a fixing device is provided between the weights. Avoid the shaking of the cathode wire due to the flushing of the high-velocity air flow, resulting in a reduction in dust removal efficiency. the

The beneficial effect of the utility model is that the PM2.5 deep treatment of the utility model with high gas velocity and high-efficiency wet electric filter equipment is effective for fine/viscous/high resistance ratio PM2.5 dust, aerosol, fine metal particles and dioxin It has a very ideal collection effect; it has the advantages of high temperature resistance, strong conductivity, high defogging efficiency, good flame retardancy, short processing, manufacturing and installation cycle, compact structure, stable performance, and long service life. the

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described. the

Fig. 1 is a semi-sectional view of a preferred embodiment of PM2.5 deep control high-gas velocity and high-efficiency wet-type electric filtration equipment of the present utility model;

Fig. 2 is a structural diagram of a honeycomb conductive composite material tube bundle and a cathode wire. the

In the figure: 1. Main shell, 2. Lower air chamber, 21. Waste gas inlet, 22. Sewage outlet, 3. Upper air chamber, 31. Exhaust port, 4. Gas distribution device, 41. Gas deflector, 42. Gas distribution plate, 5. Electrode separation device, 51. Honeycomb conductive composite tube bundle, 52. Cathode connection plate, 53. Cathode wire, 54. Weight, 6. Insulation box. the

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model. the

As shown in Figures 1 and 2, a high-efficiency wet-type electric filter equipment for PM2.5 deep treatment of the present utility model includes a main casing 1 and an electrode separation device 5 arranged in the main casing 1. The lower part of the main housing 1 is provided with a lower air chamber 2, and the upper part is provided with an upper air chamber 3. The lower air chamber 2 is provided with a waste gas inlet 21 and a sewage outlet 22. The lower air chamber 2 and the main housing 1 A gas distribution device 4 is provided at the connection, and the top of the upper gas chamber 3 has an exhaust port 31; the electrode separation device 5 includes a cathode device, an anode device and a power supply device; the anode device is a honeycomb conductive Composite material tube bundle 51; the cathode device includes a cathode connection plate 52 located in the upper air chamber and a number of cathode wires 53 suspended on the cathode connection plate 52, and the cathode wires 53 are arranged in the honeycomb conductive composite In the material tube bundle 51, a weight 54 is connected to the lower end of each cathode wire 53; the power supply device includes an insulating box 6 located on the top of the upper air chamber 3, and an electric energy introduction device is arranged in the insulating box 6, and the The electric energy introducing device is connected with the cathode connecting plate 52 by wire. The insulating box 6 is provided with a positive pressure protection device that blows hot air into the insulating box. Prevent hot smoke, fine dust, and mist from entering, ensure more reliable insulation of the cabinet, and effectively avoid the occurrence of "pollution flashover". the

Further, the upper air chamber 3 is also provided with a spray device 7 for improving the electrical conductivity in the main casing 1 . It is beneficial to increase the moisture in the flue gas flow and enhance the conductivity, and accelerate the migration speed of dust particles in the corona area to the anode. the

Further, in order to make the gas pass through the electrode separation device 5 more uniformly, the gas distribution device 4 includes a gas guide plate 41 and a gas distribution plate 42, and the gas distribution plate 42 is located on the upper part of the gas guide plate 41 . the

Further, in order to prevent the weight 54 from driving the cathode wire 53 to shake, a fixing device is provided between the weights 54 . To prevent the cathode wire 53 from shaking due to the washing of the high-velocity air flow, resulting in a reduction in dust removal efficiency. the

The utility model is introduced below in conjunction with specific use, waste gas is introduced into the lower air chamber 2 from the waste gas inlet 21; then, the waste gas flows upwards into the honeycomb conductive composite tube bundle 51; then, the high-voltage direct current of 55-72 kV is introduced through electric energy lead to the cathode wire 53 to generate corona discharge, maintain an electric field sufficient to ionize the gas, and ionize the gas between the cathode wire 53 and the honeycomb conductive composite tube bundle 51 into negative ions and free electrons, dust, acid Fog and other particles encounter electrons and generate charges. According to the principle of same-sex repulsion and opposite-sex attraction, charged dust and acid mist droplets should move to electrodes with opposite polarities, positive ions move to corona electrodes, negative ions and electrons Then move to the inner wall of the honeycomb conductive composite material tube bundle 51, fall down along the wall by its own weight, fall into the lower air chamber 2 of the electric filter equipment and discharge from the sewage outlet 22, so that the exhaust gas is purified; finally the purified exhaust gas enters the upper The air chamber, which flows from the exhaust port. the

The utility model is applied to the wet desulfurization and denitrification process with large flue gas volume and high gas velocity of 1.6-3.2m/s, and is used for the comprehensive treatment of fine dust, aerosol, acid mist, heavy metals and other pollutants (PM2.5). The dust removal efficiency is greater than 95%, and the flue gas outlet concentration is less than 20mg/Nm ³ .

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims. the

Claims (4)

1. A PM2.5 deep control high-speed high-efficiency wet electric filter equipment, characterized in that it includes a main casing and an electrode separation device arranged in the main casing, and the lower part of the main casing is provided with a lower air chamber , The upper part is provided with an upper air chamber, the lower air chamber is provided with a waste gas inlet and a sewage outlet, the connection between the lower air chamber and the main shell is provided with a gas distribution device, and the top of the upper air chamber has an exhaust mouth; The electrode separation device includes a cathode device, an anode device and a power supply device; The anode device is a honeycomb conductive composite tube bundle; The cathode device includes a cathode connection plate located in the upper air chamber and a plurality of cathode wires suspended on the cathode connection plate, and the cathode wires are arranged in the honeycomb conductive composite tube bundle one by one, and each cathode wire A heavy hammer is connected to the lower end; The power supply device includes an insulating box located on the top of the upper air chamber, the insulating box is provided with an electric energy introduction device, and the electric energy introduction device is connected to the cathode connecting plate through a wire; The insulating box is provided with a positive pressure protection device that blows hot air into the insulating box. 2. The PM2.5 deep treatment high-speed high-efficiency wet electric filter equipment according to claim 1, characterized in that: the upper air chamber is also equipped with a spray device for improving the conductivity of the main casing. 3. The PM2.5 deep treatment high-speed high-efficiency wet-type electric filtration equipment according to claim 1, characterized in that: the gas distribution device includes a gas deflector and a gas distribution plate, and the gas distribution plate is located at The upper part of the gas deflector. 4. The PM2.5 advanced treatment high-speed high-efficiency wet electric filter equipment according to claim 1, characterized in that: there is a fixing device between the weights.