CN116712804B - Integrated type electric bag composite dust removing device and method - Google Patents
Integrated type electric bag composite dust removing device and method Download PDFInfo
- Publication number
- CN116712804B CN116712804B CN202311009002.2A CN202311009002A CN116712804B CN 116712804 B CN116712804 B CN 116712804B CN 202311009002 A CN202311009002 A CN 202311009002A CN 116712804 B CN116712804 B CN 116712804B
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- filter bag
- bag
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- 239000000428 dust Substances 0.000 title claims abstract description 147
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 20
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003546 flue gas Substances 0.000 claims abstract description 19
- 230000005684 electric field Effects 0.000 claims abstract description 17
- 239000012212 insulator Substances 0.000 claims abstract description 15
- 239000007769 metal material Substances 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000007664 blowing Methods 0.000 claims description 12
- 229910052573 porcelain Inorganic materials 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 230000002441 reversible effect Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 abstract description 6
- 230000003068 static effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 15
- 239000004744 fabric Substances 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0032—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions using electrostatic forces to remove particles, e.g. electret filters
-
- 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
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses an integrated type electric bag composite dust removing device and method, comprising a shell, wherein a dust removing cavity, an anode arrangement cavity, a flow guiding cavity and an ash storage cavity are vertically penetrated from top to bottom in the shell, an air inlet flue is arranged at the side part of the flow guiding cavity, an air outlet flue is arranged at the top of the dust removing cavity, a beam is welded on the top wall of the dust removing cavity, a hanging device is connected with the beam, the hanging device is hung with a plurality of filter bags, the filter bags are vertically arranged in a long shape and are provided with a bottom opening, the inside of the shell is the anode arrangement cavity, an anode frame is horizontally arranged in the anode arrangement cavity, anode wires are arranged on the anode frame, the anode wires enter the filter bags through the bottom opening of the filter bags and are connected with insulators in the filter bags, the shell, the beam, the hanging device and the filter bags are all made of metal materials, the shell is grounded and connected with the filter bags to form cathodes, and the anode wires are anodes. The invention establishes a high-voltage electric field in the filter bag, the filter bag is connected with the shell to be a cathode, and the anode wire is added in the filter bag, so that the static electricity of dust-containing flue gas and the filtration dust collection are realized, the occupied area is reduced, and the investment and the operation cost are reduced.
Description
Technical Field
The invention relates to the technical field of dust removal, in particular to an integrated electric bag composite dust removal device and method.
Background
The electric bag composite dust collector in the current dust removing technology industry is a combination of an electric dust collector and a cloth bag dust collector, and is a simple two-system combination no matter the electric dust collector is powered on before the cloth bag is arranged in the same shell, or the electric dust collector is combined back and forth or combined up and down.
The patent application CN 105413382A-electric bag composite dust collector, the patent CN 105413382B-electric bag composite dust collector, the patent application CN 104548852A-an electric bag composite dust collector, or the patent CN 101337148B-large-scale electric bag composite dust collector are all in the form of 'electric before bag', and all adopt the electric dust collection technology in the front area in the same shell, and the rear area adopts the cloth bag dust collection technology. The patent application CN 1692971A-optimization technology of combining a single-stage electric dust collector and a cloth bag dust collector is characterized in that the front part of a shell adopts an electric dust collection technology, the rear part of the shell adopts a cloth bag dust collection technology, and then two devices are connected through a flue. The patent application CN 101607164A-vertical electric bag composite dust collector adopts a lower electric upper bag mode, namely, an electric dust collection technology is adopted in the lower area in the same shell, and a cloth bag dust collection technology is adopted in the upper area. The patent CN 105413380B-straight-through type electric bag composite dust collector or the patent CN 102327724B-electric bag composite dust collector adopts an electric dust collection technology in the front area, an electric dust collection technology in the rear lower area and a cloth bag dust collection technology in the rear upper area in the same shell. In the patent CN 101837216B-electric bag composite dust collector, the electric dust collection technology is adopted in the front area and the electric bag mixing mode is adopted in the rear area in the same shell. In the patent CN101837216B, the electric bag composite dust collector adopts an electric dust collection technology in the front area and adopts an electric bag mixed mode in the rear area in the same shell. The patent application CN113457351A discloses an electric bag dust collector, wherein an electric dust collection technology is adopted in the middle area in the same shell, and electric bag mixed forms are adopted in the two side areas.
The technical scheme is that the electric dust removal and cloth bag dust removal are in a simple series structure, namely a large amount of dust is removed through electric dust removal, and the rest superfine dust is removed through cloth bag dust removal, so that the dust removal effect is achieved. However, these structures have large floor space, excessively high space structures, relatively high investment cost, maintenance and operation costs, and relatively high emission concentration.
Disclosure of Invention
In order to solve the problems, the invention provides an integrated electric bag composite dust removing device and method, a high-voltage electric field is established in a filter bag, the filter bag is connected with a shell to be a cathode, an anode wire is added in the filter bag, the anode wire is an anode, static electricity and filtering dust collection of dust-containing smoke are realized, the occupied area is greatly reduced, and the investment and the operation cost are reduced.
The invention provides an integrated electric bag composite dust collector, which comprises a shell, wherein a dust collection cavity, an anode arrangement cavity, a flow guide cavity and a dust storage cavity are vertically penetrated in the shell from top to bottom, an air inlet flue is arranged at the side part of the flow guide cavity, an air outlet flue is arranged at the top of the dust collection cavity, a beam is welded on the top wall of the dust collection cavity, the beam is connected with a hanging device, the hanging device is suspended with a plurality of filter bags, the filter bags are vertically arranged in a long shape and are opened at the bottom, the hanging device comprises a tension bolt, a locking nut, a fixing nut and an adjusting nut, the tension bolt vertically penetrates through the beam, the locking nut and the fixing nut are sequentially fastened at the upper part of the tension bolt from top to bottom, the adjusting nut is fastened at the lower part of the tension bolt, an upper lifting hook and a lower lifting hook are arranged on the filter bags, the filter bag top adopts the end cover to be closed, upper portion lifting hook welding is in the surface of end cover, and its top hook portion is hooked with the couple of tie bolt bottom and is linked, lower part lifting hook is located the filter bag and welds in the internal surface of end cover, and its bottom hook portion is hooked and is connected with the insulator, the dust removal chamber level sets up the fly leaf, the fly leaf evenly trompil, it has the anticreep solid fixed ring to correspond hole upside welding, fixes the filter bag bottom on the anticreep solid fixed ring through sealed clamp, the positive pole arrangement chamber level sets up the positive pole frame, be equipped with the positive pole line on the positive pole frame, the positive pole line is vertical upwards to get into the filter bag through filter bag bottom opening and be connected with the insulator, casing, roof beam, cable suspension device, upper portion lifting hook, end cover, filter bag are metal material, the casing ground connection with the filter bag forms the negative pole, the positive pole is the positive pole.
Further, the filter bag adopts a flexible stainless steel membrane filter bag, a back support ring is arranged in the filter bag, the diameter of the filter bag is 300-450 mm, and the clear distance between the filter bags is 60-150 mm.
Further, the end cover is inserted into the filter bag to form a reverse blowing connecting pipe, the pipe opening faces the insulator, the reverse blowing connecting pipes are uniformly distributed and inserted into the filter bag and are in sealing welding with the end cover, the reverse blowing connecting pipe is connected with a compressed air branch pipe, the compressed air branch pipe is connected with a compressed air main pipe, the compressed air main pipe is connected with a compressed air source, and the compressed air main pipe is provided with a cleaning valve.
Further, the upper part of the outer side of the anti-falling fixing ring is provided with a protruding structure, and the sealing clamp is of a soft sealing structure.
Further, the positive pole frame is fixed on the casing through the insulating fixer of positive pole of 3 at least groups, the casing lateral wall trompil is connected with the barrel, the outside external cylinder that connects of barrel, the barrel tip closes through the maintenance flange lid, the barrel passes through insulating flange with the urceolus body and connects, the insulating fixer of positive pole includes U type connecting block, adjusts pull rod and adjusts pull rod fixing device, U type connecting block one end is connected with positive pole frame, and the other end is connected with adjusting the pull rod, adjust the pull rod tip and stretch out insulating flange, it includes concave sphere support, convex sphere support, double nut to adjust pull rod fixing device, concave sphere support with insulating flange is fixed, convex sphere support's convex surface with concave sphere laminating that concave sphere supported, double nut fastens in proper order on convex sphere support, barrel, external cylinder, maintenance flange lid are metal material and ground connection.
Further, a high-voltage generating device is introduced on at least one group of anode insulation fixing devices, the high-voltage generating device comprises a high-voltage power supply, a high-voltage introduction wire, a wall-penetrating porcelain sleeve and an electric field introduction internal wire, the outer cylinder body is upward provided with a high-voltage protective sleeve, the wall-penetrating porcelain sleeve penetrates through the outer cylinder body to be positioned between the outer cylinder body and the high-voltage protective sleeve, the high-voltage power supply is connected with the high-voltage introduction wire through the output of a high-voltage power supply outlet wire column, the high-voltage introduction wire, the wall-penetrating porcelain sleeve and the electric field introduction internal wire are sequentially connected in series, the electric field introduction internal wire connects the high-voltage power supply to an anode frame through an adjusting pull rod, and the cylinder body, the outer cylinder body and the overhaul flange cover are made of metal materials and are grounded.
Further, the anode wire adopts a stainless steel spiral line or a stainless steel wire rope, a lifting lug is welded on the anode frame, and the anode wire is hung on the lifting lug.
Further, the anode frame is connected with a 72kV three-phase high-frequency positive high-voltage power supply, and the device is provided with an anode vibrating mechanism.
Further, an inlet valve is arranged on the air inlet flue, an outlet valve is arranged on the air outlet flue, a flow guide plate is arranged in the flow guide cavity, and a closed ash discharging device is arranged at the bottom of the ash storage cavity.
The invention also provides an integrated electric bag composite dust removal method, which comprises the following steps:
step one: dust-containing flue gas enters a flow guiding cavity from an air inlet flue, and the air flow is uniformly distributed upwards through a flow guiding plate and enters an anode arrangement cavity;
step two: the particles in the flue gas are charged when passing through an anode frame in the anode arrangement cavity, a large amount of dust with negative charges moves towards the anode line along with the electric field force and is accumulated and attached to the anode line, and a small amount of dust with positive charges enters the filter bag and is accumulated and attached to the inner surface of the filter bag;
step three: the thickness of dust collected on the anode wire is continuously increased, the dust falls into the dust storage cavity by vibrating through the anode vibrating mechanism, the thickness of dust collected on the inner surface of the filter bag is continuously increased, and the dust falls into the dust storage cavity by vibrating or back blowing;
step four: the flue gas passes through a filter bag for filtration, and the filtered flue gas enters a dust removing cavity and is discharged through an air outlet flue;
step five: the dust falling into the dust storage cavity is discharged through the airtight dust discharging device.
The beneficial effects of the invention are as follows:
1. the invention establishes a high-voltage electric field in the filter bag, the filter bag is connected with the shell to be used as a cathode, the anode wire is added in the filter bag and is used as an anode, thereby realizing static electricity and filtering dust collection, greatly reducing the occupied area and reducing the investment and the operation cost.
2. In the bag-type dust removing and filtering process, superfine dust escapes from fine gaps among filter material fibers to cause discharge exceeding standard, and if the particle discharge concentration of the bag-type dust remover is less than or equal to 10mg/Nm, the filter bag must be covered to reach the discharge standard, so that the cost of the filter bag is greatly increased by the covering film. The electrostatic of the electrostatic bag dust collector can enable dust to be condensed after being charged, ultrafine dust is condensed into larger particles, coarse particles are more beneficial to natural sedimentation of dust, and the larger particles can fill fine gaps among fibers of filter materials to enable ultrafine dust to be difficult to escape, so that a filter bag can achieve a film-covered emission effect without film covering, and investment and operation cost are greatly reduced. Under the condition of the same filter material, the dust removal efficiency is greatly improved, and the emission concentration is reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the dust removing device of the present invention.
Fig. 2 is a schematic structural view of the hanging device of the present invention.
FIG. 3 is a schematic view of the structure of the filter bag of the present invention for insulation and cleaning.
FIG. 4 is a schematic view of the structure of the bottom of the filter bag of the present invention fixed to a pattern plate.
Fig. 5 is a schematic view showing the structure of the anode insulating holder of the present invention.
Fig. 6 is a partial enlarged view of a in fig. 5.
Fig. 7 is a schematic view showing the structure of an anode insulating holder (with a high voltage generating device) of the present invention.
Fig. 8 is a schematic view showing a structure in which an anode wire is fixed to an anode frame according to the present invention.
Fig. 9 is an elevation side view of the overall structure of the dust removing device in an embodiment of the present invention.
Fig. 10 is an elevation front view of the overall structure of the dust removing device in an embodiment of the present invention.
In the figure: the dust removal device comprises a shell 1, a dust removal cavity 101, a beam 102, a hanging device 103, a tension bolt 1031, a locking nut 1032, a fixing nut 1033, an adjusting nut 1034, a filter bag 104, an upper lifting hook 105, a lower lifting hook 106, an end cover 107, an insulator 108, a flower plate 109, an anti-falling fixing ring 110, a sealing clamp 111, an air outlet flue 112, an outlet valve 1121, a back-up ring 113, a back-up air connection pipe 114, a compressed air pipeline 115 and a cleaning valve 116;
anode arrangement cavity 201, anode frame 202, lifting lug 2021, anode wire 203, anode rapping mechanism 204, anode insulation holder 205, u-shaped connection block 2051, adjusting rod 2052, adjusting rod fixing device 2053, concave spherical support 2054, convex spherical support 2055, double nut 2056, connection flange 206, cylinder 207, outer cylinder 2071, service flange cover 208, insulation flange 209, high voltage generator 210, high voltage power supply 2101, high voltage lead-in wire 2102, wall-penetrating porcelain bushing 2103, lead-in electric field inner wire 2104, high voltage sheath tube 211;
a diversion cavity 301, an air inlet flue 302, an inlet valve 3021 and a diversion plate 303;
an ash storage cavity 401 and an ash discharging device 5.
Detailed Description
The structure to which the present invention relates or these terms of technology are further described below. These descriptions are merely illustrative of how the present invention may be implemented and are not intended to be in any way limiting.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left" and "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly specified and limited otherwise, references to "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral body; either directly or indirectly, through intermediaries, or in communication with each other, or in interaction with each other, unless explicitly defined otherwise. The above terms are understood in the specific meaning of the present invention according to circumstances, for those of ordinary skill in the art.
As shown in fig. 1-10, the invention provides an integrated electric bag composite dust collector, which comprises a shell 1, wherein a dust collecting cavity 101, an anode arrangement cavity 201, a flow guiding cavity 301 and a dust storage cavity 401 are vertically penetrated from top to bottom in the shell 1, an air inlet flue 302 communicated with the flow guiding cavity 301 is arranged at the side part of the flow guiding cavity 301, an air outlet flue 112 communicated with the dust collecting cavity 101 is arranged at the top part of the dust collecting cavity 101, a beam 102 is welded on the top wall of the dust collecting cavity 101, a hanging device 103 is connected with the beam 102, a plurality of filter bags 104 are hung on the hanging device 103, the filter bags 104 are vertically arranged in a long shape, the bottom is opened, the hanging device 103 comprises a tension bolt 1031, a locking nut 1032, a fixing nut 1033 and an adjusting nut 1034, the tension bolt 1031 vertically penetrates through the beam 102, the locking nut 1032 and the fixing nut 1033 are sequentially fastened at the upper part of the tension bolt 1031 from top to bottom, the filter bag 104 is provided with an upper lifting hook 105 and a lower lifting hook 106, the top of the filter bag 104 is closed by adopting an end cover 107, the upper lifting hook 105 is welded on the outer surface of the end cover 107, the top hook part of the upper lifting hook is hooked with the hook at the bottom of a tension bolt 1031, the lower lifting hook 106 is positioned in the filter bag 104 and welded on the inner surface of the end cover 107, the bottom hook part of the lower lifting hook is hooked with an insulator 108, a dust removing cavity 101 is horizontally provided with a flower plate 109, the flower plate 109 is uniformly perforated, the upper side of the corresponding hole is welded with an anti-falling fixed ring 110, a sealing clamp 111 fixes the bottom of the filter bag 104 on the anti-falling fixed ring 110, an anode arrangement cavity 201 is horizontally provided with an anode frame 202, an anode wire 203 is arranged on the anode frame 202, the anode wire 203 vertically upwards enters the filter bag 104 through the opening at the bottom of the filter bag 104 to be connected with the bottom of the insulator 108, the shell 1, the beam 102, the hanging device 103, the upper lifting hook 105, the end cover 107 and the filter bag 104 are all made of metal materials, the shell 1 is grounded and connected with the filter bag 104 to form a cathode, the anode line 203 is an anode.
The invention realizes electrostatic dust collection on dust-containing flue gas by establishing a high-voltage electric field in the filter bag 104, the filter bag is connected with the shell to be a cathode, anode wires are added in the filter bag, the anode wires are used as anodes, the high-voltage power supply connected with the anode frame 202 of the embodiment adopts a three-phase high-frequency positive high-voltage power supply, namely, the output is positive high-voltage 72kV connected with the anode, and the cathode is grounded, namely, the cathode, thereby realizing electrostatic + filtering dust collection, greatly reducing the occupied area and reducing the investment and the operation cost.
The dust-laden flue gas relates to industries including, but not limited to, electric (thermal power), metallurgy, chemical industry, tunnels, municipal, mines, cement, printing and dyeing, factory buildings and the like, and also includes civil facilities such as grain transportation and storage, flour processing, kitchen fumes and the like.
As an alternative embodiment, the filter bag 104 is a flexible stainless steel membrane filter bag. The filter bag 104 is made of a flexible material, and a back-up ring 113 is arranged in the filter bag 104 for shape support of the filter bag 104. The filter bag 104 is made of stainless steel, is reliable in conductive grounding, and can realize 100% electrostatic conduction for dust (such as silicon powder) which is originally charged with static electricity. The tensioning degree of the filter bag 104 can be adjusted through the hanging device 103, and the filter bag 104 can be tensioned through the hanging device 103 after the sealing clamp 111 is installed in place, so that the use requirement is met.
As an alternative embodiment, to ensure reasonable pole spacing, the diameter of the filter bags 104 is made 300-450 mm, and the clearance between the filter bags 104 is designed to be 60-150 mm.
As an alternative embodiment, as shown in fig. 3, the end cover 107 inserts the back-blowing connection pipes 114 into the filter bag 104, the pipe mouth faces the insulator 108, the back-blowing connection pipes 114 are uniformly inserted and welded with the end cover 107 in a sealing manner, the back-blowing connection pipes 114 are connected with a compressed air pipe 115, the compressed air pipe 115 is connected with a compressed air source, and the compressed air pipe 115 is provided with a cleaning valve 116. Because the insulator 108 is in the environment with higher dust concentration, dust adheres to the surface of the insulator 108 for a long time, so that the insulation performance of the anode wire 203 and the filter bag 104 (cathode) is deteriorated to conduct electricity, compressed air is introduced to periodically purge to prevent the insulator 108 from being discharged and conducted, and the purge valve 116 is an automatic valve, so that automatic switching can be realized.
As an alternative embodiment, as shown in FIG. 4, a protrusion structure is provided on the outer side of the anti-falling fixing ring 110 near the top for sealing and anti-falling. The seal clip 111 is a soft seal structure, and can further effectively prevent the filter bag 104 from falling off the falling-off prevention fixing ring 110.
As an alternative embodiment, as shown in fig. 5 and 6, the anode frame 202 is fixed on the housing 1 by at least 3 sets of anode insulation fixing devices 205, the side wall of the housing 1 is perforated and connected with the cylinder 207, the cylinder 207 is outwardly connected with the outer cylinder 2071, the end of the outer cylinder 2071 is covered by the service flange cover 208, the cylinder 207 is connected with the outer cylinder 2071 by the insulation flange 209, the anode insulation fixing devices 205 comprise a U-shaped connection block 2051, an adjusting pull rod 2052 and an adjusting pull rod fixing device 2053, one end of the U-shaped connection block 2051 is connected with the anode frame 202, the other end is connected with the adjusting pull rod 2052, the end of the adjusting pull rod 2052 extends out of the insulation flange 209, the adjusting pull rod fixing device 2053 comprises a concave spherical support 2054, a convex spherical support 2055 and a double nut 2056, the concave surface of the concave spherical support 2055 is attached to the concave surface of the concave spherical support 2054, the double nut 2056 is sequentially fastened on the convex spherical support 2055, and the cylinder 207, the outer cylinder 2051 and the service flange cover 208 are all made of metal and are grounded. The maintenance flange cover 208 is connected with the outer cylinder 2071 by bolts, and can be disassembled to rapidly maintain and adjust the position of the anode frame 202. The insulating flange 209 is made of insulating and sealing materials. The adjustment lever fixtures 2053 may adjust the adjustment lever 2052 360 degrees.
As an alternative embodiment, as shown in fig. 7, a high voltage generating device 210 is introduced on at least one group of anode insulation holders 205, the high voltage generating device 210 includes a high voltage power supply 2101, a high voltage introducing wire 2102, a wall penetrating porcelain sleeve 2103, and an electric field introducing internal wire 2104, the outer cylinder 207 is provided with a high voltage sheath tube 211 upward, the wall penetrating porcelain sleeve 2103 passes through the outer cylinder 2071 and is located between the outer cylinder 2071 and the high voltage sheath tube 211, the high voltage power supply 2101 is connected with the high voltage introducing wire 2102 through a high voltage power supply outlet column, the high voltage introducing wire 2102, the wall penetrating porcelain sleeve 2103, and the electric field introducing internal wire 2104 are sequentially connected in series, the electric field introducing internal wire 2104 connects the high voltage power supply 2101 to the anode frame 202 through a regulating pull rod 2052, and the cylinder 207, the outer cylinder 2071, and the maintenance flange cover 208 are all made of metal materials and are grounded. By providing the outer barrel 207 with the high voltage sheath 211, the through-wall porcelain sleeve 2103 and the high voltage lead-in wire 2102 are isolated at a safe distance, preventing the high voltage from damaging the human body.
As an alternative embodiment, the anode wire 203 is a stainless steel spiral wire or a stainless steel wire rope, and the wire diameter is about 3 mm. The anode frame 202 is welded with a lifting lug 2021, if the anode wire 203 is a spiral line, both ends are provided with hooks, and the hanging is performed directly, if the anode wire is a steel wire rope, the hanging is performed through a hole of the lifting lug, and the hanging is clamped and fixed, as shown in fig. 8.
As an alternative embodiment, as shown in fig. 9, the device is provided with an anode rapping mechanism 204, and the ash is rapped on the anode wire by means of the anode rapping mechanism 204. The anode rapping mechanism 204 is specifically a set of electric actuating mechanism (motor+speed reducer) with a plurality of hammers hung on its output shaft, each hammers corresponding to a row of anode frames, and the hammers rotate to the highest point through the rotation of the shaft, and then the free fall generates acceleration to thereby rap the anode frames, the middle of the transmission shaft is insulated from the shell and the actuating mechanism by the transition of the porcelain insulator shaft, and the anode rapping mechanism 204 is of a conventional structure and will not be described herein.
As an alternative embodiment, as shown in fig. 1, the flow guiding cavity 301 is provided with flow guiding plates 303, and the direction and the density of the flue gas are adjusted to be uniform by a plurality of flow guiding plates, which belong to a conventional structure and are not described herein.
As an alternative embodiment, as shown in fig. 1, a closed ash discharging device 5 is arranged at the bottom of the ash storage cavity 401, and the dust falling into the ash storage cavity 401 is discharged through the ash discharging device 5. The ash storage cavity 401 is bucket-shaped and is easy to collect. The ash discharging device 5 is of a conventional structure and will not be described in detail herein.
As an alternative embodiment, as shown in fig. 9, the present embodiment is provided with 6 chambers along the flue gas direction, and the number of chambers can be appropriately increased or decreased according to the amount of flue gas. Each bin anode frame 202 corresponds to at least 3 sets of anode insulation holders 205, while an anode rapping mechanism 204 is provided, which anode rapping mechanism 204 causes the dust accumulated on the anode wire 203 to drop, by rapping, the agglomerated dust into the dust storage chamber 401.
As an alternative embodiment, as shown in fig. 10, an inlet valve 3021 is provided on the inlet flue 302, and an outlet valve 1121 is provided on the outlet flue 112. Each chamber may be independently closed with a corresponding chamber outlet valve 1121 and chamber inlet valve 3021 to achieve on-line and off-line ash removal/overhaul functions. Each of the chamber inlet valves 3021 may be provided as an automatic valve or a manual valve, and each of the chamber outlet valves 1121 may be provided as an automatic valve.
The invention also provides an integrated electric bag composite dust removal method, which comprises the following steps:
step one: dust-containing flue gas enters a flow guiding cavity from an air inlet flue, and the air flow is uniformly distributed upwards through a flow guiding plate and enters an anode arrangement cavity;
step two: the particles in the flue gas are charged when passing through an anode frame in the anode arrangement cavity, a large amount of dust with negative charges moves towards the anode line along with the electric field force and is accumulated and attached on the anode line, and a small amount of dust with positive charges enters a filter bag (cathode) along with the flue gas and is accumulated and attached on the inner surface of the filter bag (cathode);
step three: the thickness of dust collected on the anode wire is continuously increased, the dust falls into the dust storage cavity by vibrating through the anode vibrating mechanism, the thickness of dust collected on the inner surface of the filter bag is continuously increased, and the dust falls into the dust storage cavity by vibrating or back blowing;
step four: the flue gas passes through a filter bag for filtration, and the filtered flue gas enters a dust removing cavity and is discharged through an air outlet flue;
step five: the dust falling into the dust storage cavity is discharged through a closed dust discharging device.
The foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. The utility model provides an integrated form electricity bag complex dust collector, includes casing, its characterized in that: the utility model discloses a dust removing device, including a shell, a dust removing cavity, an anode arrangement cavity, a flow guiding cavity and a dust storing cavity, wherein the dust removing cavity, the anode arrangement cavity, the flow guiding cavity and the dust storing cavity are arranged in the shell from top to bottom, an air inlet flue is arranged on the side of the flow guiding cavity, an air outlet flue is arranged on the top of the dust removing cavity, a beam is welded on the top wall of the dust removing cavity, the beam is connected with a hanging device, the hanging device is suspended with a plurality of filter bags, the filter bags are vertically arranged in a long shape and are opened at the bottom, the hanging device comprises a tension bolt, a lock nut, a fixing nut and an adjusting nut, the tension bolt vertically penetrates through the beam, the lock nut and the fixing nut are sequentially fastened on the upper part of the tension bolt from top to bottom, the adjusting nut is fastened on the lower part of the tension bolt, an upper lifting hook and a lower lifting hook are arranged on the filter bags, the top of the filter bags is closed by adopting an end cover, the upper lifting hook is welded on the outer surface of the end cover, the top hook of the filter bags is hooked with the hook on the bottom of the tension bolt, the lower lifting hook is positioned in the filter bag and welded on the inner surface of the end cover, the bottom hook part of the lower lifting hook is hooked with an insulator, the dust removing cavity is horizontally provided with a flower plate, the flower plate is uniformly perforated, an anti-drop fixing ring is welded on the upper side of the corresponding hole, the bottom of the filter bag is fixed on the anti-drop fixing ring through a sealing clamp, the anode arrangement cavity is horizontally provided with an anode frame, the anode frame is provided with an anode wire, the anode wire vertically upwards enters the filter bag through the bottom opening of the filter bag and is connected with the insulator, the shell, the beam, the hanging device, the upper lifting hook, the end cover and the filter bag are all made of metal materials, the shell is grounded and connected with the filter bag to form a cathode, the anode wire is an anode, the anode frame is fixed on the shell through at least 3 groups of anode insulation fixtures, the side wall of the shell is perforated and is connected with a barrel, the barrel is externally connected with an outer barrel, the end of the cylinder body is covered by an overhaul flange cover, the cylinder body is connected with the outer cylinder body by an insulation flange, the anode insulation fixer comprises a U-shaped connecting block, an adjusting pull rod and an adjusting pull rod fixing device, one end of the U-shaped connecting block is connected with an anode frame, the other end of the U-shaped connecting block is connected with the adjusting pull rod, the end of the adjusting pull rod extends out of the insulation flange, the adjusting pull rod fixing device comprises a concave spherical surface support, a convex spherical surface support and a double nut, the concave spherical surface support is fixed with the insulation flange, the convex surface of the convex spherical surface support is attached to the concave surface of the concave spherical surface support, the double nut is sequentially fastened on the convex spherical surface support, the cylinder body, the outer cylinder body and the overhaul flange cover are made of metal materials and are grounded, the high-voltage generator comprises a high-voltage power supply, a high-voltage lead-in wire, a wall-penetrating porcelain sleeve and a lead-in electric field internal wire, wherein the outer cylinder body is upward provided with a high-voltage protective sleeve, the wall-penetrating porcelain sleeve penetrates through the outer cylinder body to be positioned between the outer cylinder body and the high-voltage protective sleeve, the high-voltage power supply is connected with the high-voltage lead-in wire through the output of a high-voltage power supply wire outlet column, the high-voltage lead-in wire, the wall-penetrating porcelain sleeve and the lead-in electric field internal wire are sequentially connected in series, the lead-in electric field internal wire connects the high-voltage power supply to an anode frame through an adjusting pull rod, and the cylinder body, the outer cylinder body and the overhaul flange cover are made of metal materials and are grounded.
2. The integrated electric bag composite dust collector according to claim 1, wherein: the filter bag adopts flexible stainless steel membrane filter bag, be equipped with the back-up ring in the filter bag, the filter bag diameter is 300~450mm, the clear distance between the filter bag is 60~150mm.
3. The integrated electric bag composite dust collector according to claim 1, wherein: the end cover is inserted into the filter bag to form a reverse blowing connecting pipe, the pipe orifice faces the insulator, the reverse blowing connecting pipes are uniformly distributed and inserted into the filter bag and are welded with the end cover in a sealing mode, the reverse blowing connecting pipe is connected with a compressed air branch pipe, the compressed air branch pipe is connected with a compressed air main pipe, the compressed air main pipe is connected with a compressed air source, and the compressed air main pipe is provided with a cleaning valve.
4. The integrated electric bag composite dust collector according to claim 1, wherein: the anti-drop fixed ring outside upper portion is equipped with protruding structure, sealed clamp is soft seal structure.
5. The integrated electric bag composite dust collector according to claim 1, wherein: the anode wire adopts a stainless steel spiral line or a stainless steel wire rope, a lifting lug is welded on the anode frame, and the anode wire is hung on the lifting lug.
6. The integrated electric bag composite dust collector according to claim 1, wherein: the anode frame is connected with a 72kV three-phase high-frequency positive high-voltage power supply, and the integrated electric bag composite dust collector is provided with an anode vibrating mechanism.
7. The integrated electric bag composite dust collector according to claim 1, wherein: the air inlet flue is provided with an inlet valve, the air outlet flue is provided with an outlet valve, the flow guide cavity is provided with a flow guide plate, and the bottom of the ash storage cavity is provided with a closed ash discharging device.
8. The dust removing method of the integrated type electric bag composite dust removing device according to any one of claims 1 to 7, comprising the steps of:
step one: dust-containing flue gas enters a flow guiding cavity from an air inlet flue, and the air flow is uniformly distributed upwards through a flow guiding plate and enters an anode arrangement cavity;
step two: the particles in the flue gas are charged when passing through an anode frame in the anode arrangement cavity, a large amount of dust with negative charges moves towards the anode line along with the electric field force and is accumulated and attached to the anode line, and a small amount of dust with positive charges enters the filter bag and is accumulated and attached to the inner surface of the filter bag;
step three: the thickness of dust collected on the anode wire is continuously increased, the dust falls into the dust storage cavity by vibrating through the anode vibrating mechanism, the thickness of dust collected on the inner surface of the filter bag is continuously increased, and the dust falls into the dust storage cavity by vibrating or back blowing;
step four: the flue gas passes through a filter bag for filtration, and the filtered flue gas enters a dust removing cavity and is discharged through an air outlet flue;
step five: the dust falling into the dust storage cavity is discharged through the airtight dust discharging device.
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| US7429365B2 (en) * | 2005-11-18 | 2008-09-30 | General Electric Company | Method and system for removing mercury from combustion gas |
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