Environment-friendly efficient wet electric dust removal equipment for industrial organic waste gas

Abstract

The utility model discloses environment-friendly efficient wet electric dust removal equipment for industrial organic waste gas. A gas inlet flue is arranged at the top of a shell, and a gas outlet flue for discharging purified flue gas is arranged at the lower part of the shell; a V-shaped distribution plate, a water storage tank, an electrostatic dust collection device, a wind shielding device and a filtering layer are arranged in the shell from top to bottom; the lower end of the shell is connected with a conical water return hopper which is connected with the purification device; the V-shaped distribution plate is formed by transversely and sequentially arranging a plurality of V-shaped plates at certain intervals, and a channel allowing dust-containing flue gas to pass through is reserved between every two adjacent V-shaped plates; and a plurality of downward spray heads are arranged on the water storage tank. According to the device, industrial organic waste gas is uniformly distributed in an electric field after passing through a gas inlet flue and then is collected by a dust collection anode plate.

Description

Technical Field

[0001] The utility model belongs to dust removal equipment, in particular to environmentally friendly and efficient wet electric dust removal equipment for industrial organic waste gas. Background Art

[0002] As a new generation of treatment equipment for flue gas pollutants, wet electrostatic precipitator equipment has the function of capturing and removing toxic and harmful substances such as particulate matter and aerosols in exhaust gas, and has gradually been promoted and applied in the chemical industry. The working principle of wet electrostatic precipitator equipment is: by applying an electric field, the object to be captured is polarized, and under the action of the electric field force, it moves to the flowing water film of the dust collecting electrode and is taken away. In the existing wet electrostatic precipitator equipment, when treating sulfur-containing organic waste gas, the waste gas entering is unevenly distributed and the equipment is easily corroded by the sulfur-containing waste gas, which reduces the service life of the equipment and generates a large amount of wastewater due to continuous spraying, increasing operating costs and causing environmental pollution.

[0003] Therefore, in order to solve the above technical problems, the existing wet electrostatic precipitator equipment needs to be modified when applied to the treatment of sulfur-containing industrial organic waste gas, so that it can evenly distribute the waste gas in the electric field and reduce corrosion to the equipment. At the same time, the spray wastewater is harmlessly treated to reduce operating costs, extend the service life of the equipment, and achieve environmentally friendly development. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a high-efficiency wet electrostatic precipitator.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An environmentally friendly and efficient wet electrostatic precipitator for industrial organic waste gas, comprising a housing, a top of which is provided with an air inlet duct, and a lower portion of which is provided with an air outlet duct for discharging purified flue gas;

[0007] The shell is provided with a V-shaped distribution plate, a water storage tank, an electrostatic dust removal device, a wind shield device, and a filter layer from top to bottom; the lower end of the shell is connected to a conical water return hopper, and the water return hopper is connected to the purification device;

[0008] The V-shaped distribution plate is composed of multiple V-shaped plates arranged in sequence at a certain interval, and channels are left between adjacent V-shaped plates to allow dust-laden flue gas to pass through; multiple downward spray heads are arranged on the water storage tank.

[0009] The flue gas passes through the channel of the V-shaped distribution plate from top to bottom, buffering the dusty flue gas entering, so that the dusty flue gas from the flue can enter the full electric field as evenly as possible. Preferably, the bottom of the V-shaped plate is arc-shaped.

[0010] Preferably, the wind shield device is composed of a plurality of obliquely arranged wind shields, which can guide the smoke to the exhaust duct to prevent the smoke from bypassing the return water hopper and reducing the dust removal efficiency.

[0011] Preferably, the filter layer is a graphite filter mesh or graphite filter cotton, which is used to remove dust in the wastewater.

[0012] Preferably, the purification device includes a polypropylene (PP) filter element or an activated carbon filter element to further purify the wastewater.

[0013] Preferably, the purification device is connected to a sewage pipe, and the sewage pipe is used to discharge the purified sewage.

[0014] Preferably, the purification device is provided with a purified water outlet pipe, and the purified water outlet pipe is connected to a water tank. The water purified by the purification device enters the water tank through the pipe.

[0015] Preferably, the water tank is connected to the water inlet on the shell through a connecting pipe, and the water inlet is located above the water storage tank and below the V-shaped distribution plate.

[0016] Preferably, the water tank is also connected to a water supply pipe, and a booster pump is provided on the connecting pipe, through which the water in the water tank is pumped into the water storage tank.

[0017] Preferably, a defogger is provided at the inlet of the exhaust flue to reduce water droplets entering the chimney, and the exhaust flue is arranged above the wind shielding device.

[0018] Preferably, the electrostatic precipitator comprises an anode plate and a cathode plate.

[0019] Preferably, the purified water outlet pipe of the purification device is inclined toward the water tank to ensure that the purified water can flow smoothly into the water tank.

[0020] Preferably, the structural parts of the electrostatic precipitator device are made of stainless steel to prevent body corrosion.

[0021] Preferably, after the surface of the wet electrostatic precipitator is sandblasted, a 0.2 mm thick modified fluorosilicone coating is sprayed on the surface to resist acid and alkali corrosion.

[0022] Beneficial effects of the utility model

[0023] The utility model provides a new type of environmentally friendly and efficient wet electrostatic precipitator for industrial organic waste gas. By arranging a V-shaped distribution plate, the incoming smoke and dust gas can be evenly dispersed in the electric field, and a defogger is arranged at the outlet flue to reduce the water droplets entering the chimney; a wind shield and a purification device are arranged at the lower part of the device to improve the purification and separation efficiency; the internal parts are made of 304 stainless steel and coated with fluorine silicon paint for anti-corrosion treatment.

[0024] The utility model recycles the purified water, improves the operation efficiency of the device, saves resources and reduces pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the overall structure of one embodiment of the wet electrostatic precipitator provided by the utility model;

[0026] Figure 2 It is a cross-sectional view of the main structure of the wet electrostatic precipitator of the utility model;

[0027] Figure 3 It is a structural schematic diagram of a V-shaped distribution plate of the wet electrostatic precipitator of the utility model.

[0028] In the figure: 1, air inlet flue, 2, shell, 3, air outlet flue, 4, purification device, 5, sewage pipe, 6, water tank, 7, water supply pipe, 8, connecting pipe, 9, return water bucket, 10, booster pump, 201, V-shaped distribution plate, 202, water storage tank, 203, sprinkler head, 204, support frame, 205, cathode wire, 206, cathode frame, 207, anode plate, 208, demisting device, 209, wind shield, 210, filter layer, 211, cathode suspension. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The utility model provides Figure 2 An environmentally friendly and efficient wet electrostatic precipitator for industrial organic waste gas is shown, comprising a housing 2, an air inlet flue 1 being arranged on the top of the housing 2, and an air outlet flue 3 for discharging purified flue gas being arranged on the bottom of the housing 2.

[0031] The housing 2 is provided with a V-shaped distribution plate 201, a water storage tank 202, an electrostatic dust removal device, a wind shield 209, a filter layer 210, a water return bucket 9 and a purification device 4 from top to bottom.

[0032] The windshield device 209 is composed of a plurality of windshields arranged obliquely, which can guide the flue gas to the exhaust flue 3 to prevent the flue gas from bypassing the return water bucket and reducing the dust removal efficiency. The filter layer 210 is a graphite filter or a graphite filter cotton to remove dust in the wastewater. The lower end of the shell 2 is connected to the return water bucket 9 of a conical structure, and the return water bucket 9 receives the wastewater filtered by the filter layer 210. The lower end of the return water bucket 9 is connected to the purification device 4, and the purification device includes a polypropylene (PP) filter element or an activated carbon filter element to further purify the wastewater. The purification device 4 is connected to a sewage pipe 5, and the sewage pipe 5 is used to discharge the purified sewage. The water purified by the purification device 4 enters the water tank 6 through a pipeline, and the water tank 6 is connected to the water inlet on the shell 2 through a connecting pipe 8. The water inlet is located above the water storage tank 202 and below the V-shaped distribution plate 201. The water tank 6 is also connected to a water replenishment pipe 7 for replenishing water. A booster pump 10 is provided on the connecting pipe 8, and the water in the water tank 6 is pumped into the water storage tank 202 through the booster pump.

[0033] A plurality of downward spray heads 203 are arranged on the water storage tank 202 , and a demisting device 208 is arranged at the inlet position of the exhaust flue 3 to reduce water droplets entering the chimney. The exhaust flue 3 is arranged above the wind shield 209 .

[0034] The high-efficiency V-shaped distribution plate 201 is composed of multiple V-shaped plates arranged horizontally in sequence at a certain interval. A channel is left between adjacent V-shaped plates to allow dust-laden flue gas to pass through. The flue gas passes through the channel from top to bottom, buffering the incoming dust-laden flue gas, so that the dust-laden flue gas from the flue can enter the full electric field as evenly as possible when passing through.

[0035] As a preferred embodiment, the bottom of the V-shaped plate is arc-shaped to increase the buffering effect. Figure 3 shown.

[0036] The housing 2 may be a rectangular parallelepiped or may be a Figure 1 When the housing 2 is a cylinder, a rectangular frame for accommodating the V-shaped distribution plate 201 is provided inside.

[0037] The electrostatic precipitator includes an anode plate 207 and a cathode plate. The anode plate 207 and the cathode plate are both connected to the support frame 204. The anode plate 207 is composed of a plurality of anode tube bundles. The anode plate is a dust collecting electrode. The cathode plate includes a plurality of cathode hangers 211, and the cathode hanger 211 includes a cathode frame 206 and a cathode wire 205 therein. The cathode wire 205 is a discharge electrode, mainly a needle wire series, which is one of the key components of a wet electrostatic precipitator. The cathode hanger 211 introduces a high-voltage negative electrode.

[0038] The housing 2 is an important force-bearing support component of the wet electrostatic precipitator, and is provided with auxiliary components including a ladder, insulation, and grounding on the outside.

[0039] The purified water outlet pipe of the purification device 4 is inclined toward the water tank 6 to ensure that the purified water can smoothly flow into the water tank 6. The internal structural parts of the wet electrostatic precipitator are all exposed to the flue gas, so the body material is made of 304 stainless steel to prevent body corrosion. In addition, all external surfaces are sandblasted and then sprayed with 0.2mm thick modified fluorosilicone coating, which is resistant to acid and alkali corrosion.

[0040] Working principle: When the organic waste gas high-efficiency wet electrostatic precipitator is in use, the organic waste gas enters from the air inlet flue 1, passes through the V-shaped distribution plate 201 and enters the electrostatic precipitator. Under the action of the DC high voltage, the cathode plate ionizes the surrounding gas, charges the surface of the dust or droplet particles, and the charged particles move toward the anode plate under the action of the electric field force and deposit on the anode plate 207. The water flow of the spray system flows down from the top of the anode plate 207, forming a uniform and stable water film on the anode plate 207, and takes away the dust particles on the plate. The purified waste gas is discharged through the exhaust flue 3 for the next step of treatment. The water after spraying is reused after passing through the purification device 4. The organic waste gas high-efficiency wet electrostatic precipitator has a reasonable design, a simple structure, high practicality, and can be widely used.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An environmentally friendly and efficient wet electrostatic precipitator for industrial organic waste gas, characterized in that: A casing body (2), wherein the top of the casing (2) is provided with an air inlet duct (1), and the lower part of the casing (2) is provided with an air outlet duct (3) for discharging purified flue gas; The shell (2) is provided with a V-shaped distribution plate (201), a water storage tank (202), an electrostatic dust removal device, a wind shield (209), and a filter layer (210) from top to bottom; the lower end of the shell (2) is connected to a conical water return hopper (9), and the water return hopper (9) is connected to the purification device; The V-shaped distribution plate (201) is composed of a plurality of V-shaped plates arranged in sequence transversely at a certain interval, and channels are left between adjacent V-shaped plates to allow dust-containing flue gas to pass through; a plurality of downward spray heads (203) are arranged on the water storage tank (202).

2. The wet electrostatic precipitator according to claim 1, characterized in that: The wind shielding device (209) is composed of a plurality of wind shielding plates arranged obliquely.

3. The wet electrostatic precipitator according to claim 1, characterized in that: The filter layer (210) is a graphite filter mesh or graphite filter cotton.

4. The wet electrostatic precipitator according to claim 1, characterized in that: The purification device comprises a polypropylene filter element or an activated carbon filter element.

5. The wet electrostatic precipitator according to claim 1, characterized in that: The purification device (4) is connected to a sewage discharge pipe (5).

6. The wet electrostatic precipitator according to claim 1, characterized in that: The purification device (4) is provided with a clean water outlet pipe, and the clean water outlet pipe is connected to a water tank (6); the water tank (6) is connected to a water inlet on the housing (2) via a connecting pipe (8).

7. The wet electrostatic precipitator according to claim 1, characterized in that: A demisting device (208) is provided at the inlet of the exhaust flue (3).

8. The wet electrostatic precipitator according to claim 1, characterized in that: The electrostatic precipitator comprises an anode plate (207) and a cathode plate.

9. The wet electrostatic precipitator according to claim 6, characterized in that: The clean water outlet pipe of the purification device (4) is inclined toward the water tank (6).

10. The wet electrostatic precipitator according to claim 1, characterized in that: The electrostatic dust removal device is made of 304 stainless steel.

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