CN209829270U

CN209829270U - Honeycomb tube type wet electrostatic dust collector

Info

Publication number: CN209829270U
Application number: CN201920581974.1U
Authority: CN
Inventors: 傅仰林
Original assignee: Jiangxi Dragon Environmental Protection Engineering Co Ltd
Current assignee: Jiangxi Dragon Environmental Protection Engineering Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2019-12-24
Anticipated expiration: 2029-04-26

Abstract

The utility model relates to an environmental protection equipment field specifically is a honeycomb tubular wet electrostatic precipitator, including the gas wash tower, be provided with the clean room in the gas wash tower, the clean room is the honeycomb tubulose of erectting, and the clean room top is provided with the cathode frame, is connected with the negative pole line on the cathode frame, and the negative pole line is vertical stretches into in the honeycomb of clean room, the negative pole line lower extreme is connected with the weight, and cathode frame top is provided with washing unit, and the washing unit bottom is provided with washes the mouth, is provided with the flush fluid entry on the washing unit, and the gas wash tower top is provided with into the mouth, and the gas wash tower lower extreme is provided with out the mouth of cigarette. The honeycomb tubular dust removal chamber has the advantages of high dust collection efficiency, large smoke treatment capacity, long service life, low maintenance cost, high anode strength, light weight, compact structure, small occupied area, capability of utilizing space to the maximum extent, effective utilization of the inside and the outside of the pipe wall, simple installation and difficult deformation.

Description

Honeycomb tube type wet electrostatic dust collector

Technical Field

The utility model relates to an environmental protection equipment field specifically is a honeycomb tube formula wet electrostatic precipitator.

Background

Flue gas desulfurization is an effective method for controlling the emission of sulfur dioxide in coal-fired flue gas of a power plant, which is widely adopted at home and abroad, wherein a wet flue gas desulfurization process is the most widely applied and effective flue gas desulfurization process in the world due to the advantages of mature technology, high desulfurization rate and the like. At present, the market share of wet desulphurization in the world is more than 85%, China is as high as 95%, and the average removal rate of sulfur dioxide in the wet desulphurization process can reach more than 95%.

The traditional wet desulphurization system generally adopts a two-stage mechanical demister to remove water vapor carried out from flue gas, heats saturated flue gas washed by an absorption tower through GGH, and discharges the saturated flue gas through a chimney, and the starting point of the mode is that the flue gas is heated through GGH, and the corrosion of the flue gas to the chimney can be reduced after the temperature of the flue gas is expected to be increased to about 80 ℃. But the problem of chimney corrosion is not solved in fact, because the removal rate of sulfur trioxide in the flue gas in the wet desulphurization process is only 40% -50%, considerable sulfur trioxide is discharged along with the flue gas in the form of aerosol, the temperature of the heated flue gas is still lower than the acid dew point temperature, and the sulfur trioxide is condensed on the chimney wall to cause corrosion. The mechanical demister has the function of reducing the content of water mist in the flue gas as much as possible, but has a better removing effect on large liquid drops of more than 40 microns, and condensate appears on the wall of the chimney by fine dirt drops, so that the chimney is corroded more severely. The fine dust and aerosol in the smoke can not be removed, and the smoke directly enters the respiratory tract of a human body in the atmosphere and is most harmful to the health of the human body. A new dust removal device capable of further removing dust and sol in wet desulphurization is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a honeycomb tube type wet electrostatic precipitator.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a honeycomb tubular wet process electrostatic precipitator, includes the gas wash tower, be provided with the clean room in the gas wash tower, the clean room is the honeycomb tubulose of erectting, the clean room top is provided with the negative pole frame, be connected with the negative pole line on the negative pole frame, the negative pole line is vertical stretches into in the honeycomb of clean room, negative pole line lower extreme is connected with the weight, negative pole frame top is provided with washing unit, the washing unit bottom is provided with washes the mouth, the last flush fluid entry that is provided with of washing unit, the gas wash tower top is provided with into the mouth, the gas wash tower lower extreme is provided with out the mouth and goes out dirty mouthful. The weight is used for tensioning the cathode line, reducing the swing of the cathode line and preventing the cathode line from touching the anode plate, the dust collector has high dust collection efficiency, large smoke treatment capacity, long service life and low maintenance cost, the anode of the honeycomb tubular dust removal chamber has high strength, light weight, compact structure, small occupied area, space utilization to the maximum extent, effective utilization of the inside and the outside of the tube wall, simple installation and difficult deformation.

Furthermore, the outer wall of the dust removal tower body is provided with an insulation can, so that heat preservation is facilitated.

Further, the outer wall of the dust removal tower is provided with an insulating box, so that the power supply safety is improved.

Furthermore, a high-voltage rectifier transformer is arranged in the insulating box, the cathode of the transformer is connected with the cathode wire, and the anode of the transformer is connected with the dust removal chamber, so that the dust removal effect is improved.

Furthermore, an insulating support is arranged between the dust removal chamber and the cathode frame, so that the safety is improved.

Furthermore, the edge of the cathode line is in a sawtooth shape, so that the corona starting voltage is reduced.

Furthermore, the cathode wire is made of titanium alloy or lead-antimony alloy, is corrosion-resistant, has low corona starting voltage of only 20KV, and can enable the electric demister to operate under the working conditions of lower voltage and higher current; the current density is high, the specific current can reach 1.45MA/M, and the sublimed sulfur adhesion and dirt wrapping capacity can be effectively resisted.

Furthermore, the honeycomb pipe of the dust removal chamber is made of stainless steel, and the heavy hammer is made of ceramic, so that the dust mist trapping capacity is improved.

Furthermore, the inner part of the heavy hammer is made of lead, and the outer wall of the heavy hammer is made of polytetrafluoroethylene, so that the effect of the heavy hammer is improved, and the service life of the heavy hammer is prolonged.

Further, the smoke inlet is communicated with a smoke outlet of an industrial flue gas desulfurization tower or an industrial flue gas denitration tower through a flue gas pipeline, the smoke outlet is communicated with a chimney, the sewage outlet is communicated to a circulating water tank, a washing liquid inlet is communicated with a washing water source through a pipeline, and a booster pump is arranged on a washing liquid inlet pipeline, so that industrial flue gas dedusting is facilitated, ultralow emission is realized, and the problem of chimney emission is thoroughly solved.

Compared with the prior art, the beneficial effects of the utility model are that: the dust collection efficiency is high, the smoke treatment amount is large, the service life is long, and the maintenance cost is low; the honeycomb tubular dust removal chamber has the advantages of high anode strength, light weight, compact structure, small occupied area, capability of utilizing space to the maximum extent, effective utilization of both the inside and the outside of the pipe wall, simple installation and difficult deformation; corrosion resistance, low corona starting voltage, high current density and high dust and fog collecting capacity.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a cross-sectional view of the dust chamber of the present invention;

fig. 3 is a view of the cathode line of the present invention.

In the figure: 1-dust removal tower, 2-dust removal chamber, 3-cathode frame, 4-flushing device, 5-smoke inlet, 6-smoke outlet, 7-dirt outlet, 8-insulation box, 9-heat insulation box, 31-cathode line, 32-heavy hammer, 41-flushing port and 42-flushing fluid inlet

Detailed Description

In order to illustrate the technical solution of the present invention more clearly, the following will combine some embodiments of the present invention to describe the technical solution of the present invention clearly and completely.

Example 1

In this embodiment, referring to fig. 1-3, a honeycomb tube type wet electrostatic precipitator includes a stainless steel dust removal tower 1, a dust removal chamber 2 is disposed in the dust removal tower 1, the dust removal chamber 2 is in a vertical honeycomb tube shape, the honeycomb tube of the dust removal chamber 2 is made of stainless steel, a cathode frame 3 is disposed above the dust removal chamber 2, a cathode line 31 is connected to the cathode frame 3, an insulating support is disposed between the dust removal chamber 2 and the cathode frame 3, the edge of the cathode line 31 is in a zigzag shape, the cathode line 31 is made of lead-antimony alloy, the cathode line 31 vertically extends into the honeycomb tube of the dust removal chamber 2, the lower end of the cathode line 31 is connected to a heavy hammer 32, the heavy hammer 32 is made of ceramic, a washing device 4 is disposed above the cathode frame 3, a washing port 41 is disposed at the bottom of the washing device, a washing fluid inlet 42 is disposed on the washing device 4, a smoke inlet 5 is disposed at the top of the, the outer wall of the dedusting tower 1 is provided with an insulating box 8, a high-voltage rectifier transformer is arranged in the insulating box 8, a transformer cathode is connected with a cathode line 31, a transformer anode is connected with the dedusting chamber 2, and the outer wall of the tower body of the dedusting tower 1 is provided with an insulation box 9. The dust removal principle of the wet electrostatic dust collector is that dust-containing flue gas enters a dust removal tower 1 from a flue inlet 5, when the dust-containing flue gas passes through a high-voltage electrostatic field of a dust removal chamber 2, the dust-containing flue gas collides with positive ions, negative ions and electrons between electrodes or is charged in ion diffusion motion, dust particles with the electrons and the ions move towards an opposite electrode under the action of electric field force and are adsorbed on the opposite electrode, the treated flue gas is discharged to a chimney from a flue outlet 6, and dust and grease on the electrode fall into waste liquid at the bottom of the dust collector by a flushing device 4 in a spraying mode and the like. The embodiment has the advantages of high dust collection efficiency, large smoke treatment capacity, long service life, low maintenance cost, high dust fog collection capacity, high anode strength of the honeycomb tubular dust removal chamber, light weight, compact structure, small occupied area, capability of utilizing space to the maximum extent, effective utilization of the inside and outside of the pipe wall, simple installation, difficult deformation, good safety, corrosion resistance, low corona starting voltage, capability of operating the electric demister at the working condition of lower voltage and larger current only by 20KV, high current density, specific current of 1.45MA/M, and effective resistance to sublimed sulfur adhesion and dirt wrapping capability.

Example 2

Embodiment 1 is combined to this embodiment, on embodiment 1's basis, advances the outlet flue intercommunication that smoke mouth 5 and industrial flue gas desulfurization tower or industrial flue gas denitration tower pass through the flue gas pipeline, and outlet flue 6 accesss to the chimney, and outlet flue 7 communicates to the circulating water pond, and flush fluid entry 42 passes through the pipeline intercommunication and washs the water source, is equipped with the booster pump on the lotion entry 42 pipeline, is provided with glass steel polypropylene pp defroster baffling plate formula breakwater defroster on the outlet flue 6. The dust removal of the industrial flue gas is convenient, the ultralow emission is realized, and the emission problem of a chimney is thoroughly solved.

Example 3

This embodiment combines fig. 1-3, a honeycomb tubular wet electrostatic precipitator, includes non-conductive glass steel gas wash tower 1, is provided with clean room 2 in the gas wash tower 1, and clean room 2 is the honeycomb tubulose of erectting, and 2 honeycomb pipes in clean room are made for electrically conductive glass steel, and electrically conductive glass steel is laminated structure, is in proper order from inlayer to skin: 1 layer of carbon fiber pad, 2 layers of chopped fiber strip-shaped pad, 3 layers of 0.4mm thick glass fiber cloth and l layers of glass surface pad, wherein the resin adopts vinyl resin containing graphite (98%) and fire retardant, a steel cathode frame 3 is arranged above the dust removal chamber 2, a cathode line 31 is connected on the cathode frame 3, an insulating support is arranged between the dust removal chamber 2 and the cathode frame 3, the edge of the cathode line 31 is in a sawtooth shape, the cathode line 31 is made of lead-antimony alloy, the cathode line 31 vertically extends into a honeycomb tube of the dust removal chamber 2, the lower end of the cathode line 31 is connected with a heavy hammer 32, the heavy hammer 32 is made of ceramic, a flushing device 4 is arranged above the cathode frame 3, the bottom of the flushing device is provided with a flushing port 41, the flushing fluid inlet 42 is arranged on the flushing device 4, the top of the dust removal tower 1 is provided with a smoke inlet 5, the lower end of the dust removal tower 1 is provided with a smoke outlet 6 and, be provided with high-voltage rectifier transformer in the insulating box 8, transformer negative pole with negative pole line 31 is connected, transformer positive pole with dust removal chamber 2 is connected, and 1 tower body outer wall of gas wash tower is provided with insulation can 9, advances the outlet flue 5 and passes through flue gas pipeline intercommunication with the outlet flue of industrial flue gas desulfurization tower or industrial flue gas denitration tower, and outlet flue 6 accesss to the chimney, and outlet flue 7 communicates to the circulation pond, and washing fluid entry 42 passes through the pipeline intercommunication and washs the water source, is equipped with the booster pump on the washing liquid entry 42 pipeline. The dust removal principle of the wet electrostatic dust collector is that dust-containing flue gas enters a dust removal tower 1 from a flue inlet 5, when the dust-containing flue gas passes through a high-voltage electrostatic field of a dust removal chamber 2, the dust-containing flue gas collides with positive ions, negative ions and electrons between electrodes or is charged in ion diffusion motion, dust particles with the electrons and the ions move towards an opposite electrode under the action of electric field force and are adsorbed on the opposite electrode, the treated flue gas is discharged to a chimney from a flue outlet 6, and dust and grease on the electrode fall into waste liquid at the bottom of the dust collector by a flushing device 4 in a spraying mode and the like. The conductive glass fiber reinforced plastic has strong corrosion resistance, can resist corrosion of various dilute acid, alkali and salt mediums, has good flame retardance, oxygen index of less than 28 percent, light weight, high strength and definite appearance size.

The wet electrostatic precipitator dust removal principle is that dusty flue gas gets into gas wash tower 1 by inlet 5, when through 2 high-voltage electrostatic fields of clean room, with the interelectrode positive, anion and electron bump or the lotus in the ion diffusion motion, take the dust particle of electron and ion to the opposite sex electrode motion and adsorb on the opposite sex electrode under the electric field force effect, flue gas after the processing is arranged to the chimney by outlet 6, washing unit 4 makes the dust grease on the electrode fall into dust remover bottom waste liquid through modes such as spraying, the process is:

the conductive glass fiber reinforced plastic dust collecting polar plate has the advantages that the dust collection is uniform, the dust collection efficiency is higher, the jagged star-shaped line of the cathode is easy to generate corona, and air can be ionized under lower voltage to charge dust particles; the operation is stable, the reliability is high, the deposition efficiency can be kept for a long time, and transient and steady-state short circuit can be borne. When the electric field is deposited to generate spark discharge, because the output current of the power supply is constant current, the current in the electric field cannot be increased, and the input current of the power grid is 10 percent of the rated value, the safety of constant current power supply equipment is ensured, and meanwhile, because the input current is constant current, the discharge channel disappears automatically, and the corona wire and the anode plate are protected; can adapt to the working condition change, overcome the secondary dust raising caused by rapping, and have the capability of inhibiting corona blocking and cathode hypertrophy. When the concentration of dust, coal tar or acid mist in the electric field is increased and the flow rate is accelerated, the specific resistance of the electric field is increased, the voltage in the electric field can automatically rise due to constant output current, the electric field obtains more electric energy, and the purification effect is good; the operating voltage is high, discharge can be inhibited, and the device is not sensitive to mechanical defects; the power supply has a simple structure, the multiple groups of L-C adopt parallel connection design, the maintenance is convenient, the failure rate of the power supply is low, the power factor is high and cos is more than or equal to 0.90, and the power-saving effect is obvious. The anode system consists of parts such as an anode suspension device, an anode plate and the like, the anode cylinder is a dust collecting electrode and is formed by a delta 2 stainless steel plate on a special machine, the anode cylinder consisting of 85 dust collecting electrode cylinders is arranged into a plane with better rigidity, the concentricity of the anode cylinder is ensured to be within a specified range so as to ensure the limit deviation of the distance between a cathode and an anode, and the cathode system consists of parts such as a cathode hanger, a vertical beam, an upper frame, a lower frame, a cathode line and the like. The cathode wire is a discharge electrode, is made of special equipment, is mainly made of star-shaped wire series, and is one of key parts of the wet electrostatic dust collector. The cathode hanging is to hang the whole cathode system on a girder at the top and introduce a high-voltage cathode. The planar structure composed of vertical beams, upper beams, etc. has the function of fixing the upper and lower frames and the cathode spraying shaft system. The upper and lower frames are the supports of the cathode wires, and the spraying system is composed of bottom spraying and top spraying. When entering the dust remover, the flue gas is firstly mixed with water sprayed from the bottom, enters an electric field, is mainly adsorbed on the anode plate after being charged, water sprayed from the upper part flushes the anode plate, falls to the bottom and is taken away by a water outlet, the shell is a part for supporting the whole dust remover, the main body is a stainless steel cylinder with the diameter of 2.5m, the top is a conical outlet, the conical outlet is also provided with an access hole, the cylinder is also provided with the access hole and an air inlet hole, and is provided with a ladder-moving platform, in order to facilitate the on-site operation and daily maintenance of the wet electrostatic precipitator, all main maintenance points can be reached by a ladder platform, the wet electrostatic precipitator operates under high voltage and adopts negative corona treatment, the anode and the shell are equipotential, so that the equipment must be reliably grounded to protect high-voltage equipment and personal safety, a grounding network can reach less than 2 ohms all year round, and the arrangement of the grounding network strives to make the surrounding voltage to earth uniform.

The present invention is not limited to the above-described embodiments, and various changes can be made by those skilled in the art, and any changes which are equivalent or similar to the present invention are intended to be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a honeycomb tubular wet process electrostatic precipitator, includes gas wash tower (1), its characterized in that: be provided with clean room (2) in clean room tower (1), clean room (2) are the honeycomb tubulose of erectting, clean room (2) top is provided with negative pole frame (3), be connected with negative pole line (31) on negative pole frame (3), negative pole line (31) are vertical to be stretched into in the honeycomb pipe of clean room (2), negative pole line (31) lower extreme is connected with weight (32), negative pole frame (3) top is provided with washing unit (4), the washing unit bottom is provided with washes mouthful (41), be provided with flush fluid entry (42) on washing unit (4), clean room tower (1) top is provided with into mouth (5), clean room tower (1) lower extreme is provided with outlet flue (6) and goes out dirty mouthful (7).

2. A honeycomb tube wet electrostatic precipitator as claimed in claim 1, wherein: the outer wall of the tower body of the dust removal tower (1) is provided with an insulation can (9).

3. A honeycomb tube wet electrostatic precipitator as claimed in claim 1, wherein: the outer wall of the dust removing tower (1) is provided with an insulating box (8).

4. A honeycomb tube wet electrostatic precipitator as claimed in claim 3, wherein: be provided with high-voltage rectifier transformer in insulating case (8), the transformer negative pole with negative pole line (31) are connected, the transformer positive pole with clean room (2) are connected.

5. A honeycomb tube type wet electrostatic precipitator according to any one of claims 1 to 4, wherein: an insulating support is arranged between the dust removing chamber (2) and the cathode frame (3).

6. The honeycomb tube type wet electrostatic precipitator according to claim 5, wherein: the edge of the cathode line (31) is in a sawtooth shape.

7. The honeycomb tube wet electrostatic precipitator of claim 6, wherein: the cathode line (31) is made of titanium alloy or lead-antimony alloy.

8. The honeycomb tube wet electrostatic precipitator of claim 7, wherein: the honeycomb tube of the dust removing chamber (2) is made of stainless steel, and the heavy hammer (32) is made of ceramic.

9. The honeycomb tube wet electrostatic precipitator of claim 7, wherein: the inner part of the heavy hammer (32) is made of lead, and the outer wall of the heavy hammer is made of polytetrafluoroethylene.

10. A honeycomb tube wet electrostatic precipitator according to claim 8 or 9, wherein: the flue gas inlet (5) is communicated with a flue gas outlet of an industrial flue gas desulfurization tower or an industrial flue gas denitration tower through a flue gas pipeline, the flue gas outlet (6) is communicated with a chimney, the sewage outlet (7) is communicated with a circulating water tank, a washing liquid inlet (42) is communicated with a washing water source through a pipeline, and a booster pump is arranged on the washing liquid inlet (42) pipeline.