CN209866326U

CN209866326U - High-voltage electrostatic dust-collecting module smoke discharging and purifying device

Info

Publication number: CN209866326U
Application number: CN201821956035.2U
Authority: CN
Inventors: 张昌武; 朱春红; 邵斌
Original assignee: Shanghai Yongde Air Purification Technology Co Ltd
Current assignee: Shanghai Yongde Air Purification Technology Co Ltd
Priority date: 2018-11-26
Filing date: 2018-11-26
Publication date: 2019-12-31
Anticipated expiration: 2028-11-26

Abstract

The utility model relates to a high-voltage electrostatic dust-laying module smoke emission and purification device, which comprises a shell, wherein a smoke inlet and a smoke outlet are respectively arranged on two sides of the shell; a smoke channel is arranged in the shell and passes through the high-voltage discharge module, the plate type dust collection module and the porous ceramic plate; the high-voltage discharge module is provided with a plurality of metal round tubes for gas to pass through, discharge needle poles are coaxially arranged in the metal round tubes, and the metal round tubes and the discharge needle poles are respectively and electrically connected with the negative pole and the positive pole of a power supply; the plate type dust collecting module comprises a plurality of positive aluminum plates and a plurality of grounding aluminum plates, wherein the positive aluminum plates and the grounding aluminum plates are arranged in parallel and are provided with circulation gaps through which smoke can pass; the porous ceramic plate is provided with air holes, and a catalyst is arranged in the air holes. The utility model has the advantages that: can effectively remove the particulate matters, the nitrides and the sulfides in the flue gas.

Description

High-voltage electrostatic dust-collecting module smoke discharging and purifying device

Technical Field

The utility model relates to an air purification equipment's technical field, especially a high-voltage static laying dust module smoke emission purifier.

Background

At present, biomass pellet fuel is widely used in daily life and industrial production, such as tea wrap machine, drying-machine etc. biomass pellet fuel principal ingredients is wooden, bamboo matter raw materials, does not have chemical additive, and it is graininess, and its burning back exists many pollutants in the flue gas, suspended particles: the particle diameter is 0.9-90 μm, and can cause discomfort and diseases such as pneumonia, bronchitis, asthma, emesis, and skin allergy; toxic gas: particle diameter of 0.0001-0.001 μm.

In the prior art, flue gas generated by combustion of biomass granular fuel is directly discharged into the atmosphere without being treated, and a large amount of flue gas emission can cause atmospheric pollution, greenhouse effect, damage to ecological balance and damage to human bodies.

Disclosure of Invention

The utility model aims at providing a high-voltage static laying dust module smoke emission purifier according to above-mentioned prior art not enough, can improve dust removal and purification efficiency through utilizing electrostatic ionization and electrostatic precipitation composite construction.

The utility model discloses the purpose is realized accomplishing by following technical scheme:

a high-voltage electrostatic dust deposition module flue gas emission and purification device comprises a shell, wherein a flue gas inlet and a flue gas outlet are respectively formed in two sides of the shell; a smoke channel is arranged in the shell and passes through the high-voltage discharge module, the plate type dust collection module and the porous ceramic plate; the high-voltage discharge module is provided with a plurality of metal round tubes for gas to pass through, discharge needle poles are coaxially arranged in the metal round tubes, and the metal round tubes and the discharge needle poles are respectively and electrically connected with the negative pole and the positive pole of a power supply; the plate type dust collecting module comprises a plurality of positive aluminum plates and a plurality of grounding aluminum plates, wherein the positive aluminum plates and the grounding aluminum plates are arranged in parallel and are provided with circulation gaps through which smoke can pass; the porous ceramic plate is provided with air holes, and a catalyst is arranged in the air holes.

The high-voltage discharge module comprises a negative electrode conductive hole plate, a positive electrode conductive frame and an insulating connecting column; the negative conductive pore plate and the positive conductive frame are arranged in parallel, and a plurality of insulating connecting columns are connected between the negative conductive pore plate and the positive conductive frame; the metal round pipe is inserted into the through hole of the negative conductive orifice plate; the positive electrode conductive frame is in a grid shape, one end of the discharge needle electrode extends into the metal round tube, and the other end of the discharge needle electrode is fixedly connected with the positive electrode conductive frame.

The high-voltage discharge module is plate-shaped, and an insulating frame is arranged at the edge of the high-voltage discharge module; the high-voltage discharge module is fixed inside the shell through the insulating frame.

The ratio of the length of the discharge needle electrode extending into the metal circular tube to the length of the metal circular tube is 3: 4-5: 6.

The ratio of the length of the metal round pipe to the inner diameter of the metal round pipe is greater than or equal to 1.2.

The shell is internally provided with two high-voltage discharge modules, three plate type dust collecting modules and a porous ceramic plate; the flue gas passageway passes through one in proper order high voltage discharge module, one board-like dust collecting module, a high voltage discharge module, two board-like dust collecting module and porous ceramic plate.

The air inlet is provided with a metal wire filter screen.

The utility model has the advantages that: the electric field charge and the diffusion charge are realized when the particles in the circulating flue gas move in the electric field of the particles through the high-voltage discharge module, the optimal charge effect is achieved, the particles are enabled to be positively charged, after the flue gas enters the plate type dust collecting module, the charged particles are subjected to the repulsion force (coulomb force effect) of the positive plate in the electric field of the plate type dust collecting module, the charged particles are deposited on the grounding aluminum plate, the ceramic carrier module and sulfide and nitride generate catalytic reaction, and harmful substances in the flue gas can be oxidized and reduced by a catalyst, so that the flue gas is effectively purified.

Drawings

FIG. 1 is a partial cross-sectional view of the high-voltage electrostatic dust-collecting module flue gas emission and purification device of the present invention;

FIG. 2 is a side view of a high voltage discharge module;

FIG. 3 is a schematic cross-sectional view of a high voltage discharge module;

fig. 4 is a side view of a plate type dust collection module.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1-4, the labels 1-21 are respectively shown as: the device comprises a shell 1, a flue gas inlet 2, a flue gas outlet 3, a flue gas channel 4, a high-voltage discharge module 5, a plate type dust collecting module 6, a porous ceramic plate 7, a metal round tube 8, a discharge needle electrode 9, a positive electricity aluminum plate 10, a grounding aluminum plate 11, a negative electricity conductive hole plate 12, a positive electricity conductive frame 13, an insulation connecting column 14, an air inlet 15, an air outlet 16, a distribution box 17, a high-voltage generator 18, a conductive rod 19, a circulation gap 20 and an insulation frame 21.

Example (b): as shown in fig. 1 to 3, the present embodiment specifically relates to a high-voltage electrostatic dust deposition module flue gas emission purification device, which includes a housing 1, wherein a flue gas inlet 2 and a flue gas outlet 3 are respectively opened at two sides of the housing 1, a flue gas channel 4 is formed inside the housing between the flue gas inlet 2 and the flue gas outlet 3, and the flue gas channel 4 passes through a high-voltage discharge module 5, a plate-type dust collection module 6 and a porous ceramic plate 7.

The high-voltage discharge module 5 is provided with a plurality of metal round tubes 8 for gas to pass through, the metal round tubes 8 are internally and coaxially provided with discharge needle electrodes 9, and the metal round tubes 8 and the discharge needle electrodes 9 are respectively and electrically connected with the negative electrode and the positive electrode of a power supply; an electric field is arranged between the metal round tube 8 and the discharge needle electrode 9, and in the process that the smoke flows through the metal round tube 8, electric field charge and diffusion charge are realized when particles in the smoke move in the electric field, so that the particles in the smoke are positively charged.

The plate type dust collecting module 6 comprises a plurality of positive aluminum plates 10 and grounding aluminum plates 11 which are alternately arranged, wherein the positive aluminum plates 10 and the grounding aluminum plates 11 are arranged in parallel and have circulation gaps through which smoke can pass; when the smoke passes through the plate type dust collecting module 6, the charged particles are subjected to the action of the repulsive coulomb force of the positive plate in the electric field of the plate type dust collecting module and are deposited on the grounding aluminum plate 11. The porous ceramic plate 7 is provided with fine pores, and a catalyst is arranged in the pores. When the flue gas flows through the porous ceramic plate 7, the sulfides and the nitrides in the flue gas are subjected to catalytic reaction with the catalyst, and harmful substances in the flue gas can be oxidized and reduced by the catalyst, so that the flue gas is effectively purified.

Specifically, the high-voltage discharge module 5 comprises a negative conductive orifice plate 12, a positive conductive frame 13 and an insulating connecting column 14; the negative conductive pore plate 12 and the positive conductive frame 13 are arranged in parallel, and a plurality of insulating connecting columns 14 are connected between the negative conductive pore plate and the positive conductive frame. The metal round pipe 8 is inserted into the through hole of the negative conductive orifice plate 12; one end of the metal round tube 8 is an air inlet 15, and the other end is an air outlet 16. In this embodiment, the axis of the metal round tube 8 is perpendicular to the negative conductive hole plate 12 and the positive conductive frame 13, and the air outlet 16 of the metal round tube 8 faces the positive conductive frame 13. The positive conductive frame 13 is in a grid shape, one end of the discharge needle 9 is a tip and extends into the metal round tube 8, and the other end of the discharge needle is fixedly connected with the positive conductive frame 13.

The negative conductive orifice plate 12 and the positive conductive frame 13 are made of metal. The axes of the discharge needle electrode 9 and the metal round tube 8 are coincided, the discharge distances from the discharge needle electrode 9 to the inner wall of the metal round tube 8 are equal, a disc-shaped high-strength electrostatic field with gradually decreasing intensity from the axis to the inner wall can be formed after electrification, a low field strength dead angle cannot be generated, and the ozone release amount generated due to air ionization can be effectively controlled by selecting proper voltage.

A distribution box 17 is arranged on the outer side of the shell 1, and a high-voltage generator 18 is arranged in the distribution box 17; the negative conductive orifice plate 12 and the positive conductive frame 13 of the high voltage generator 18 are electrically connected to the negative electrode and the positive electrode of the high voltage generator 18, respectively. The high voltage generator 15 is used for electrifying positive electricity to the positive electrode conductive frame 6 and electrifying negative electricity to the negative electrode conductive pore plate 8. The discharge needle electrode 9 and the metal round tube 8 form a disc-shaped high-intensity electrostatic field. Under the action of the electric field force, suspended particles in the smoke are charged to carry positive charges and then are adsorbed by the negative electrode, and microorganisms are ionized, carbonized and killed under the action of the high-strength electric field.

Specifically, the positive conductive frame 13 is formed by alternately arranging a plurality of conductive rods 19 to form a grid, and a circulation gap 20 through which the flue gas can pass is formed at the air outlet 16 of the metal round tube 8. The flue gas can enter the plate type dust collecting module 6 from the circulating gap 20 after being processed by the high-voltage discharging module.

Specifically, the porous ceramic plate 7 has a loose and porous structure, and a catalyst is disposed in the pores. In the combustion process, because the biomass particle combustion products can generate a certain amount of sulfide and nitride, a porous ceramic plate 17 which can perform catalytic reaction with the sulfide and nitride is arranged at the tail end of the device, the catalyst in the porous ceramic plate 17 is uniformly attached and treated, the surface area is large, and harmful substances in the flue gas can be oxidized and reduced by the catalyst when the flue gas passes through the surface. Compared with other materials, the ceramic-based carrier has stronger affinity with a catalyst, is not easy to crack and fall off, and has good temperature resistance, stable performance and long service life.

Specifically, the ratio of the length of the discharge needle 9 extending into the metal round tube 8 to the length of the metal round tube 8 is 3:4 to 5: 6. The reason for selecting the arrangement mode is that if the needle point of the discharge needle electrode 9 is too close to the air inlet 15 of the metal round tube 8, the ionic wind can be reduced, the corona is unstable, the ionization region can be thinned, and the positive charge and the ionization degree of the particulate matters and the microorganisms are influenced when the particulate matters and the microorganisms pass through, so that the particulate matters and the microorganisms can not be effectively ionized, or the particulate matters and the microorganisms can not be provided with enough positive charge to be absorbed by the dust collection region; if the needle point of the discharge needle electrode 9 is too far away from the air inlet 15 of the metal circular tube 8, a part of tube body of the tube cavity of the metal circular tube 8, which is close to the air inlet 15, cannot be matched with the discharge needle electrode 9 to generate an ionization region, the tube cavity of the section loses the use value of the ionization region, the region of the dust collection region is correspondingly reduced at the moment, and the dust removal effect is reduced. If the needle tip is out of range, the dust collecting effect will be reduced proportionally.

Specifically, the length of the metal round pipe 8 is not less than 1.2 times of the inner diameter thereof. The one-time passing rate can be improved by limiting the length-to-inner diameter ratio of the metal round tube 8, the efficiency of dust removal and sterilization is improved, and the diameter is 30m³In the test chamber, the removal rate of 1 hour can reach more than 98 percent. When the length-to-inner diameter ratio of the tube is less than 1.2 times, the dust collecting area in the tube cavity is short and narrow, ionized particulate matters and microorganisms cannot be completely adsorbed when rapidly passing through the dust collecting area under the influence of wind speed, and therefore the one-time passing rate is reduced. On the contrary, when the length-to-inner diameter ratio of the pipe is larger, the length of the dust collecting area is longer, and the primary passing rate is increased.

Specifically, the number of the high-voltage discharge modules 5 is 2; the number of the plate type dust collecting modules is 3; each high-voltage discharge module 5 and the plate type dust collecting module are arranged in the shell 1 and distributed along the flow direction of the smoke channel 4. From the flue gas inlet 2 to the flue gas outlet 3, the flue gas channel 4 passes through a high-voltage discharge module 5, a plate-type dust collecting module 6, another high-voltage discharge module 5, another two plate-type dust collecting modules 6 and a porous ceramic plate 7 in sequence.

In order to prevent larger particles from entering the electric field to generate detonation and ozone, a metal wire coarse filter screen is arranged in the smoke inlet 2 of the shell 1.

The high-voltage discharge module 5 is plate-shaped, and an insulating frame 21 is arranged at the edge of the high-voltage discharge module for insulating the high-voltage discharge module 5, so that current leakage is avoided. The high-voltage discharge module 5 is fixed inside the housing 1 by an insulating frame. This mounting structure facilitates cleaning of the high-voltage discharge module 5. The insulating frame 21 may be made of an insulating material, or may be made of a material with low conductivity, such as: the stainless steel plate can thus improve the service life of the insulating frame 21 without replacement for the lifetime.

Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, the description thereof is not repeated herein.

Claims

1. The utility model provides a high-voltage static laying dust module fume emission purifier which characterized in that: the device comprises a shell, wherein a flue gas inlet and a flue gas outlet are respectively formed in two sides of the shell, a flue gas channel is formed between the flue gas inlet and the flue gas outlet, and the flue gas channel passes through a high-voltage discharge module, a plate type dust collection module and a porous ceramic plate; the high-voltage discharge module is provided with a plurality of metal round tubes for gas to pass through, discharge needle poles are coaxially arranged in the metal round tubes, and the metal round tubes and the discharge needle poles are respectively and electrically connected with the negative pole and the positive pole of a power supply; the plate type dust collecting module comprises a plurality of positive aluminum plates and a plurality of grounding aluminum plates, wherein the positive aluminum plates and the grounding aluminum plates are arranged in parallel and are provided with circulation gaps through which smoke can pass; the porous ceramic plate is provided with air holes, and a catalyst is arranged in the air holes.

2. The high-voltage electrostatic dust collection module flue gas emission and purification device according to claim 1, characterized in that: the high-voltage discharge module comprises a negative electrode conductive hole plate, a positive electrode conductive frame and an insulating connecting column; the negative conductive pore plate and the positive conductive frame are arranged in parallel, and a plurality of insulating connecting columns are connected between the negative conductive pore plate and the positive conductive frame; the metal round pipe is inserted into the through hole of the negative conductive orifice plate; the positive electrode conductive frame is in a grid shape, one end of the discharge needle electrode extends into the metal round tube, and the other end of the discharge needle electrode is fixedly connected with the positive electrode conductive frame.

3. The high-voltage electrostatic dust collection module flue gas emission and purification device according to claim 2, characterized in that: the high-voltage discharge module is plate-shaped, and an insulating frame is arranged at the edge of the high-voltage discharge module; the high-voltage discharge module is fixed inside the shell through the insulating frame.

4. The high-voltage electrostatic dust collection module flue gas emission and purification device according to claim 2, characterized in that: the ratio of the length of the discharge needle electrode extending into the metal circular tube to the length of the metal circular tube is 3: 4-5: 6.

5. The high-voltage electrostatic dust collection module flue gas emission and purification device according to claim 2, characterized in that: the ratio of the length of the metal round pipe to the inner diameter of the metal round pipe is greater than or equal to 1.2.

6. The high-voltage electrostatic dust collection module flue gas emission and purification device according to claim 1, characterized in that: the shell is internally provided with two high-voltage discharge modules, three plate type dust collecting modules and a porous ceramic plate; the flue gas passageway passes through one in proper order high voltage discharge module, one board-like dust collecting module, a high voltage discharge module, two board-like dust collecting module and porous ceramic plate.

7. The high-voltage electrostatic dust collection module flue gas emission and purification device according to claim 1, characterized in that: the flue gas inlet is provided with a metal wire filter screen.