CN109603521B - High-efficient gas cleaning device - Google Patents
High-efficient gas cleaning device Download PDFInfo
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- CN109603521B CN109603521B CN201811576178.5A CN201811576178A CN109603521B CN 109603521 B CN109603521 B CN 109603521B CN 201811576178 A CN201811576178 A CN 201811576178A CN 109603521 B CN109603521 B CN 109603521B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
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- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/09—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces at right angles to the gas stream
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- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
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- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/60—Use of special materials other than liquids
- B03C3/62—Use of special materials other than liquids ceramics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/66—Applications of electricity supply techniques
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
The invention relates to a high-efficiency flue gas purification device, which comprises a shell, wherein a flue gas channel is arranged in the shell, and the flue gas channel sequentially passes through a high-voltage discharge module and a plate type dust collection module; an electric field between the metal round tube and the discharge needle electrode is used for electrifying the smoke dust particles in the smoke; the dust collecting plate comprises a positive plate and a negative plate which are arranged in a stacked mode and are electrically connected with the positive electrode and the negative electrode of the power supply respectively; the surface of the negative plate is embedded with a magnet and is provided with a smoke dust containing groove; the plate type dust collecting module is used for deflecting the motion trail of the charged smoke particles through an electric field and a magnetic field and collecting the smoke particles through the negative plate and the dust containing groove of the negative plate. The invention has the advantages that: the plate-type dust collecting module comprehensively utilizes an electric field and a magnetic field to adsorb and separate charged particles in the flue gas so as to realize the purpose of collecting the smoke dust.
Description
Technical Field
The invention relates to the technical field of air purification equipment, in particular to a high-efficiency flue gas purification device.
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 diameter of the particles is 0.9-90 microns, and discomfort and diseases such as pneumonia, bronchitis, asthma, vomit, skin allergy and the like can be caused; toxic gas: the diameter of the fine particles is 0.0001 to 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 invention aims to provide a high-efficiency flue gas purification device, which combines an electrostatic field and a magnetic field to realize high-efficiency flue gas purification.
The purpose of the invention is realized by the following technical scheme:
a high-efficiency flue gas purification device comprises a shell, wherein a flue gas channel is arranged in the shell, and the flue gas channel sequentially passes through a high-voltage discharge module and a plate type dust collection module; the high-voltage discharge module is provided with a plurality of metal round tubes for smoke to pass through, discharge needle electrodes are coaxially arranged in the metal round tubes, the metal round tubes and the discharge needle electrodes are respectively and electrically connected with a negative electrode and a positive electrode of a power supply, and an electric field between the metal round tubes and the discharge needle electrodes is used for electrifying smoke particles in the smoke; the plate type dust collecting module comprises a plurality of dust collecting plates which are arranged in parallel at intervals; the dust collecting plates comprise negative plates, insulating plates and positive plates which are stacked, and the positive plates and the negative plates of two adjacent dust collecting plates are oppositely arranged; the positive plate and the negative plate are respectively and electrically connected with the positive electrode and the negative electrode of the power supply; the surface of the negative plate is used as the windward side of the dust collecting plate and inclines towards the direction of the smoke source, and a smoke containing groove is formed in the surface of the negative plate; the plate type dust collecting module is used for deflecting the motion trail of the charged smoke particles through the electric field between the positive plate and the negative plate and collecting the smoke particles through the negative plate and the dust containing groove thereof.
The high-voltage discharge module also comprises a negative electrode conducting plate, a positive electrode conducting frame and an insulating connecting column; the negative electrode conducting plate and the positive electrode conducting frame are arranged in parallel, and a plurality of insulating connecting columns are connected between the negative electrode conducting plate and the positive electrode conducting frame; the metal round pipe is arranged on the negative electrode conductive plate; the positive conductive frame is in a grid shape and is arranged on one side of the circular metal tube where the air outlet is located; one end of the discharge needle electrode extends into the metal circular tube, and the other end of the discharge needle electrode is fixedly connected with the positive electrode conducting 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 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 metal round pipes in the high-voltage discharge module are closely arranged; the utility model discloses a metal tube, including metal tube, positive conductive frame, the positive conductive frame electric connection, its other end passes space between the metal tube, and the one side at the air intake place of metal tube forms protruding structure.
The plate type dust collecting module further comprises a fixed frame; the dust collecting plates are arranged in the fixed frame in parallel; the dust receiving groove extends from one end to the other end of the dust collecting plate.
The first side edge of the dust containing groove is close to the direction of the smoke source, and a magnet is embedded in the area, close to the first side edge of the dust containing groove, of the surface of the negative plate; the magnetic field of the magnet enables the motion track of the charged smoke particles from the smoke source direction to deflect towards the surface of the negative plate and the direction of the dust containing groove.
The magnet is a rare earth permanent magnet; the magnet is in a strip shape, and two poles of the magnet face to two ends of the dust collecting plate respectively; the magnet is flush with the surface of the negative plate.
And a diamagnetic material layer is arranged between the negative plate of the dust collecting plate and the insulating plate.
A porous ceramic plate is arranged in the shell; the porous ceramic plate is provided with air holes, and a catalyst is arranged in the air holes. The invention has the advantages that: plate-type dust collection module utilizes electric field and magnetic field to adsorb the separation to electrified granule in the flue gas comprehensively to the purpose of smoke and dust is collected in the realization, can suitably reduce the voltage between positive plate and the negative plate like this under the prerequisite of guaranteeing the smoke and dust collection effect, ozone pollution and the voltage breakdown risk that have avoided adopting too high voltage to lead to.
Drawings
FIG. 1 is a schematic structural diagram of a high-efficiency flue gas purification device according to the present invention;
FIG. 2 is a schematic diagram of a high voltage discharge module;
FIG. 3 is a cross-sectional view of a high voltage discharge module;
FIG. 4 is a schematic view of a plate dust collection module;
fig. 5 is a sectional view of the dust collecting plate.
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 following drawings to facilitate understanding by those skilled in the art:
as shown in fig. 1-5, the labels 1-28 are respectively shown as: the device comprises a shell 1, a smoke inlet 2, a smoke outlet 3, a smoke channel 4, a plate type dust collecting module 5, a high-voltage discharging module 6a, a high-voltage discharging module 6b, a porous ceramic plate 7, a metal round tube 8, a discharging needle electrode 9, a negative electrode conducting plate 10, a positive electrode conducting frame 11, an insulating connecting column 12, an air inlet 13, an air outlet 14, a power supply 15, a conducting rod 16, a circulating gap 17, a charged particle guiding needle 18, an insulating frame 19, a dust collecting plate 20, a fixed frame 21, a negative plate 22, an insulating plate 23, a positive plate 24, a smoke containing groove 25, a first side edge 26, a magnet 27 and a diamagnetic material layer 28.
Example (b): as shown in fig. 1, the high-efficiency flue gas purification device of the present embodiment includes a casing 1, a flue gas inlet 2 and a flue gas outlet 3 are respectively provided at two ends of the casing 1, and a flue gas channel 4 is provided inside the casing 1. The number of the high-voltage discharging modules is two, the number of the plate type dust collecting modules 5 is three, and the two high-voltage discharging modules are respectively a high-voltage discharging module 6a and a high-voltage discharging module 6 b. In the process of purifying the flue gas, the flue gas enters the shell 1 from the flue gas inlet 2, and the high-voltage discharge module 6a, the first plate-type dust collection module 5, the high-voltage discharge module 6b, the second plate-type dust collection module 5, the third plate-type dust collection module 5 and the porous ceramic plate 7 are sequentially arranged along the flue gas channel 4 and finally discharged from the flue gas outlet 3. Each high-voltage discharge module is used for enabling particles in the flue gas to carry positive charges in the process that the flue gas passes through, and each plate-type dust collecting module 5 is used for enabling the particles carrying the positive charges to be deposited in the plate-type dust collecting module 5 through an electrostatic field and a magnetic field so as to separate air and pollutant particles in the flue gas, and therefore the purpose of flue gas purification is achieved.
As shown in fig. 1, 2 and 3, the high-voltage discharge module 6a and the high-voltage discharge module 6b have similar structures, and both are provided with a plurality of metal circular tubes 8 for flue gas to pass through, a discharge pin 9 is coaxially arranged in the metal circular tube 8, and the metal circular tube 8 and the discharge pin 9 are respectively electrically connected with a negative electrode and a positive electrode of a power supply 15; after the electricity is supplied, an electric field is arranged between the metal round tube 8 and the discharge needle electrode 9, and in the process that the smoke gas flows through the metal round tube 8, electric field charge and diffusion charge are realized when smoke dust particles in the smoke gas move in the electric field, so that the smoke dust particles in the smoke gas are positively charged.
Specifically, the high-voltage discharge module further comprises a negative electrode conductive plate 10, a positive electrode conductive frame 11 and an insulating connecting column 12; the negative conductive plate 10 and the positive conductive frame 11 are arranged in parallel, and a plurality of insulating connecting columns 12 are connected between the negative conductive plate and the positive conductive frame. The metal round tube 8 is mounted on the negative electrode conductive plate 10, and an opening for accommodating the metal round tube 8 is formed in the negative electrode conductive plate 10. One end of the metal round tube 8 is an air inlet 13, and the other end is an air outlet 14. In this embodiment, the axis of the metal circular tube 8 is perpendicular to the negative conductive plate 10 and the positive conductive frame 11, and the air outlet 14 of the metal circular tube 8 faces the positive conductive frame 11. The positive conductive frame 11 is in a grid shape, one end of the discharge needle 9 is a pointed end and extends into the metal round tube 8, and the other end of the discharge needle is fixedly connected with the positive conductive frame 11.
The negative conductive plate 10 and the positive conductive frame 11 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.
The outer side of the casing 1 is provided with a power supply 15, and the positive pole and the negative pole of the power supply 15 are respectively electrically connected with the positive pole conductive frame 11 and the negative pole conductive plate 10. The power supply 15 is used to apply a positive voltage to the positive conductive frame 11 and a negative voltage to the negative conductive plate 10. After the power is switched on, the discharge needle electrode 9 and the metal round tube 8 form a disc-shaped high-intensity electrostatic field. Under the action of electric field force, the smoke 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 11 is a grid-shaped structure formed by connecting a plurality of conductive rods 16 which are intersected in a staggered manner. The positive conductive frame 11 forms a flow gap 17 through which the flue gas can pass at the air outlet 14 of the metal round tube 8.
The ratio of the length of the discharge needle electrode 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 13 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 smoke dust particles and microorganisms during passing are influenced, so that the smoke dust particles and the microorganisms cannot be effectively ionized, or the smoke dust particles and the microorganisms cannot 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 13 of the metal circular tube 8, a part of tube body of the tube cavity of the metal circular tube 8 close to the air inlet 13 cannot be matched with the discharge needle electrode 9 to generate an ionization region, the tube cavity of the section loses the use value, 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.
In this embodiment, the metal round tubes 8 in the high-voltage discharge module are closely arranged in a honeycomb shape. The high-voltage discharge module 6b mainly functions to increase the number of positive charges carried by the smoke particles in the smoke, however, the electric field intensity in the gaps between the metal round tubes 8 is 0, and in the process that the smoke flows through the high-voltage discharge module 6b, part of the smoke flows through the gaps between the metal round tubes 8, so that the smoke particles in the part of the smoke cannot obtain more positive charges. This problem can be solved by blocking the gaps between the metal round tubes 8, but simple blocking increases the wind resistance of the high voltage discharge module 6 b.
In order to solve the dead zone caused by the gap between the metal round tubes 8, a charged particle guide pin 18 is introduced into the high-voltage discharge module 6 b. The charged particle guide pin 18 is the main difference between the high voltage discharge module 6a and the high voltage discharge module 6 b. The charged particle guide pins 18 are parallel to the axis of each metal round tube 8, one end of each charged particle guide pin is electrically connected with the positive conductive frame 11, the other end of each charged particle guide pin penetrates through the gap between the metal round tubes 8, and a protruding structure is formed on one side of each metal round tube 8 where the air inlet 13 is located. After the electrification, an electric field exists between the protruding charged particle guide needle 18 and the surrounding metal round tubes 8, so that charged smoke particles which are going to pass through the gaps between the metal round tubes 8 are repelled by the electric field, the motion trail of the charged smoke particles is deflected towards the air inlets 13 of the metal round tubes 8, the charged smoke particles in the smoke are prevented from passing through the gaps between the metal round tubes 8, and dead zones caused by the gaps between the metal round tubes 8 are eliminated.
The high-voltage discharge module is plate-shaped, and an insulating frame 19 is arranged at the edge of the high-voltage discharge module; the high-voltage discharge module is fixed inside the housing 1 by an insulating frame 19. This mounting structure facilitates cleaning of the high-voltage discharge module 5.
As shown in fig. 1, 4 and 5, the plate type dust collecting module 5 includes a plurality of dust collecting plates 20 arranged in parallel at intervals and a fixing frame 21. The dust collecting plate 20 has a long bar shape. Both ends of each dust collecting plate 20 are fixedly installed at both side edges of the fixing frame 21, respectively. The dust collecting plates 20 are equally spaced and equally inclined, and a louver structure is formed in the fixing frame 21. The gaps between adjacent dust collection plates 20 allow for the passage of flue gases.
The dust collecting plate 20 has a multi-layer composite structure, and the dust collecting plate 20 includes a negative electrode plate 22, an insulating plate 23, and a positive electrode plate 24, which are stacked. The positive electrode plate 24 and the negative electrode plate 22 of each dust collecting plate 20 are electrically connected to the positive electrode and the negative electrode of the power supply 15, respectively. The surface of the negative plate 22 is inclined toward the direction of the smoke source (c direction in fig. 5) as the windward side of the dust collecting plate 20, and the surface of the negative plate 22 is provided with a smoke accommodating groove 25. In two adjacent dust collection plates 20, the positive plates 24 of one dust collection plate 20 face the negative plates 22 of the other dust collection plate 20, and in this embodiment, the negative plates 22 of each dust collection plate 20 face obliquely upward. The smoke accommodating groove 25 extends from one end to the other end of the dust collecting plate 20. The slot width of the smoke containing groove 25 is smaller than the maximum width of the smoke containing groove 25, and this structure allows the smoke containing groove 25 to have a larger space so as to contain smoke particles in the smoke.
After the power is applied, the electric field between the positive plates 24 and the negative plates 22 of the two adjacent dust collecting plates 20 deflects the charged particles in the flue gas towards the negative plates 22 of the dust collecting plates 20, and the positively charged soot particles can fall into the soot accommodating groove 25 or be adsorbed on the surfaces of the negative plates 22 under the action of the electric field. The dust collecting plate 20 is inclined to enhance the dust collecting effect of the negative plate 22, so that particles in the flue gas from the direction of the flue gas source can more easily fall into the smoke containing groove 25. Through setting up smoke and dust holding tank 25, can avoid the flow of flue gas to blow up the smoke and dust granule that adsorbs on dust collecting plate 20 surface and cause secondary pollution. Be provided with many mutual parallel's smoke and dust holding tank 25 on the negative plate 22, can collect electrified smoke and dust granule in the flue gas in proper order, strengthened the collection effect of collecting plate 20 to the smoke and dust granule.
The first side 26 of the smoke containing groove 25 is close to the smoke source direction (c direction in fig. 5), and a magnet 27 is embedded in the area of the surface of the negative plate 22 close to the first side 26 of the smoke containing groove 25. The magnet 27 is a rare earth permanent magnet; the magnet 27 is in a bar shape, and two poles of the magnet face to two ends of the dust collecting plate 20 respectively; the magnet 27 is flush with the surface of the negative electrode plate 22. The positively charged particles in the flue gas pass through the magnetic field of the magnet 27 along with the flow of the flue gas, and the magnet 27 is arranged in such a way that the motion locus of the positively charged particles is deflected in the direction of the surface of the negative plate 22 and the notch of the smoke accommodating groove 25 under the action of the lorentz force. Because the magnet 27 is adjacent to the first side 26 of the smoke containing groove 25, under the action of the magnetic field and the electric field, the positively charged particles can fall into the smoke containing groove 25 along the track d. The plate-type dust collecting module 5 comprehensively utilizes the electric field and the magnetic field to separate and adsorb charged smoke dust particles in smoke gas so as to realize the purpose of collecting smoke dust, thus properly reducing the voltage between the positive plate 24 and the negative plate 22 on the premise of ensuring the smoke dust collecting effect and avoiding the ozone pollution and voltage breakdown risk caused by adopting overhigh voltage.
In order to avoid that the magnetic field of each magnet 27 affects other areas of the dust collection plate 20, a layer 28 of diamagnetic material is provided between the negative electrode plate 22 of the dust collection plate 20 and the insulating plate 23. The diamagnetic material layer 28 prevents the magnetic field of the magnet 27 from extending to the side of the dust collection plate 20 that is the positive plate 24.
As shown in fig. 1, the porous ceramic plate 7 is opened with fine pores in which a catalyst is disposed. 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 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 7 which can perform catalytic reaction with the sulfide and the nitride is arranged at the tail end of the device, the catalyst in the porous ceramic plate 7 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.
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, they are not to be considered repeated herein.
Claims (8)
1. The utility model provides a high-efficient gas cleaning device which characterized in that: the smoke-gas discharge device comprises a shell, wherein a smoke-gas channel is arranged in the shell, and the smoke-gas channel sequentially passes through a high-voltage discharge module and a plate type dust collection module; the high-voltage discharge module is provided with a plurality of metal round tubes for smoke to pass through, discharge needle electrodes are coaxially arranged in the metal round tubes, the metal round tubes and the discharge needle electrodes are respectively and electrically connected with a negative electrode and a positive electrode of a power supply, and an electric field between the metal round tubes and the discharge needle electrodes is used for electrifying smoke particles in the smoke; the plate type dust collecting module comprises a plurality of dust collecting plates which are arranged in parallel at intervals; the dust collecting plates comprise negative plates, insulating plates and positive plates which are stacked, and the positive plates and the negative plates of two adjacent dust collecting plates are oppositely arranged; the positive plate and the negative plate are respectively and electrically connected with the positive electrode and the negative electrode of the power supply; the surface of the negative plate is used as the windward side of the dust collecting plate and inclines towards the direction of the smoke source, and a smoke containing groove is formed in the surface of the negative plate; the plate type dust collecting module is used for deflecting the motion trail of the charged smoke particles through an electric field between the positive plate and the negative plate and collecting the smoke particles through the negative plate and the dust containing groove thereof;
the first side edge of the dust containing groove is close to the direction of the smoke source, and a magnet is embedded in the area, close to the first side edge of the dust containing groove, of the surface of the negative plate; the magnetic field of the magnet enables the motion track of the charged smoke particles from the smoke source direction to deflect towards the surface of the negative plate and the direction of the dust containing groove.
2. The high-efficiency flue gas purification device according to claim 1, wherein: the high-voltage discharge module also comprises a negative electrode conducting plate, a positive electrode conducting frame and an insulating connecting column; the negative electrode conducting plate and the positive electrode conducting frame are arranged in parallel, and a plurality of insulating connecting columns are connected between the negative electrode conducting plate and the positive electrode conducting frame; the metal round pipe is arranged on the negative electrode conductive plate; the positive conductive frame is in a grid shape and is arranged on one side of the circular metal tube where the air outlet is located; one end of the discharge needle electrode extends into the metal circular tube, and the other end of the discharge needle electrode is fixedly connected with the positive electrode conducting frame.
3. The high-efficiency flue gas purification device according to claim 2, wherein: 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 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.
4. The high-efficiency flue gas purification device according to claim 1 or 2, wherein: the metal round pipes in the high-voltage discharge module are closely arranged; the utility model discloses a metal tube, including metal tube, positive conductive frame, the positive conductive frame electric connection, its other end passes space between the metal tube, and the one side at the air intake place of metal tube forms protruding structure.
5. The high-efficiency flue gas purification device according to claim 1, wherein: the plate type dust collecting module further comprises a fixed frame; the dust collecting plates are arranged in the fixed frame in parallel; the dust receiving groove extends from one end to the other end of the dust collecting plate.
6. The high-efficiency flue gas purification device according to claim 1, wherein: the magnet is a rare earth permanent magnet; the magnet is in a strip shape, and two poles of the magnet face to two ends of the dust collecting plate respectively; the magnet is flush with the surface of the negative plate.
7. The high-efficiency flue gas purification device according to claim 1, wherein: and a diamagnetic material layer is arranged between the negative plate of the dust collecting plate and the insulating plate.
8. The high-efficiency flue gas purification device according to claim 1, wherein: a porous ceramic plate is arranged in the shell; the porous ceramic plate is provided with air holes, and a catalyst is arranged in the air holes.
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| CN110694797B (en) * | 2019-09-23 | 2024-05-14 | 宁波方太厨具有限公司 | Electrostatic purifying device |
| CN114893856B (en) * | 2022-05-23 | 2023-10-27 | 珠海格力电器股份有限公司 | Multifunctional purifier |
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