CN113477038A - Organic waste gas secondary membrane separation and recovery device and method - Google Patents
Organic waste gas secondary membrane separation and recovery device and method Download PDFInfo
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- CN113477038A CN113477038A CN202110956437.2A CN202110956437A CN113477038A CN 113477038 A CN113477038 A CN 113477038A CN 202110956437 A CN202110956437 A CN 202110956437A CN 113477038 A CN113477038 A CN 113477038A
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- 239000012528 membrane Substances 0.000 title claims abstract description 265
- 238000000926 separation method Methods 0.000 title claims abstract description 93
- 239000007789 gas Substances 0.000 title claims abstract description 75
- 239000010815 organic waste Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000011084 recovery Methods 0.000 title claims description 24
- 238000001125 extrusion Methods 0.000 claims description 80
- 238000004140 cleaning Methods 0.000 claims description 41
- 230000008569 process Effects 0.000 claims description 18
- 239000002957 persistent organic pollutant Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 17
- 230000009471 action Effects 0.000 claims description 15
- 238000007790 scraping Methods 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 239000012510 hollow fiber Substances 0.000 claims description 10
- 230000035699 permeability Effects 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000013459 approach Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims 2
- 238000013461 design Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 238000000746 purification Methods 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- B01D53/22—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 by diffusion
- B01D53/225—Multiple stage diffusion
- B01D53/226—Multiple stage diffusion in serial connexion
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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
- B01D53/22—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 by diffusion
- B01D2053/221—Devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
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Abstract
The invention discloses a device and a method for separating and recovering organic waste gas by a secondary membrane, wherein the device comprises a primary membrane component, a secondary membrane component, a power component and a controller, the primary membrane component comprises a first separating cylinder, the two-stage membrane subassembly comprises a second separation barrel, a membrane frame and a membrane sleeve, wherein a first motor and a supercharger are arranged in the membrane sleeve, the first motor provides power for the rotating shaft, the supercharger is connected with the first separation barrel, and a controller is electrically connected with the first motor and the supercharger; the invention has reasonable structural design, stable and reliable operation and is suitable for large-scale popularization.
Description
Technical Field
The invention relates to the technical field of membrane separation equipment, in particular to a secondary membrane separation and recovery device and method for organic waste gas.
Background
Organic waste gases are one of the most serious pollutants in the exhaust gas of many industrial sectors and are also one of the important causes of the haze weather. With the development of modern industry, a large amount of organic waste gas is released every day in the processes of storage, transportation and use of oil products and the production process of industries such as petroleum, chemical engineering, spraying and the like, which not only wastes resources, but also seriously damages the environment. At present, no specific organic waste gas emission is reported in China, but according to the reports of the relevant environmental protection organizations in the world, China reaches seven in ten cities with the most serious global pollution. Therefore, the tasks of organic waste gas emission and control in China are urgent, and the separation and purification treatment of the organic waste gas becomes a very important aspect in the atmospheric pollution control.
The existing control methods of organic waste gas can be mainly divided into two categories: one type is a destructive method, which essentially comprises: combustion, biological and corona processes; the other is a non-destructive method, namely a recovery method, and the more conventional methods mainly comprise a photocatalytic oxidation method, a solvent absorption method, an adsorption method, a condensation method, a membrane separation method and the like. The membrane separation technology is adopted to recover and treat organic matters in the waste gas, and has the advantages of simple process, high recovery rate, low energy consumption, no secondary pollution and the like.
However, the membrane separation device for organic waste gas in rare technology has the following defects in the use process: 1. the organic waste gas cannot be filtered and purified in a grading way, so that the treated waste gas still contains a large amount of organic pollutants, and secondary pollution to the environment is easily caused; 2. the equipment has poor running stability, and when the high-concentration organic pollution waste gas is treated, the filter membrane component is extremely easy to block, and the normal running of the equipment is influenced, so that the equipment investment is increased.
Disclosure of Invention
Aiming at the technical problems, the invention provides a high-efficiency, practical and high-stability organic waste gas secondary membrane separation and recovery device and method.
The technical scheme of the invention is as follows: a secondary membrane separation and recovery device for organic waste gas comprises a primary membrane component, a secondary membrane component, a power component and a controller; the primary membrane component and the secondary membrane component are arranged on the bottom plate in parallel, and the primary membrane component comprises a first separating cylinder, a movable filter plate and a shaking plate; a cleaning door is movably hinged on the side wall of the first separating barrel, a rotating shaft is vertically arranged in the first separating barrel, the upper end and the lower end of the rotating shaft are respectively rotatably clamped with the inner wall of the first separating barrel, and two extrusion springs are movably sleeved on the rotating shaft; the pressure sensor is arranged in the first separating cylinder, the number of the movable filter plates is two, the two movable filter plates are respectively movably sleeved on the rotating shaft and are positioned between the two extrusion springs, the first filter membrane is arranged on one side, opposite to the two movable filter plates, of each movable filter plate, the edges of the two movable filter plates are respectively in sliding clamping connection with the inner wall of the first separating cylinder, annular shaking sleeves are arranged on the opposite sides of the two movable filter plates, and a plurality of arc-shaped grooves are uniformly distributed in the annular shaking sleeves; the two shaking plates are respectively sleeved on the rotating shaft and are positioned at one side far away from the two extrusion springs, the opposite sides of the two shaking plates are rotatably clamped with a plurality of shaking wheels through mounting blocks, the number of the shaking wheels on the same shaking plate is correspondingly consistent with that of the arc-shaped grooves on the corresponding annular shaking sleeves, and the shaking wheels are correspondingly arranged at the upper and lower positions;
the secondary membrane subassembly comprises a second separation cylinder, a filter membrane frame and a membrane sleeve; the side wall of the second separation cylinder is provided with an exhaust port, the upper end of the second separation cylinder is movably connected with a sealing cover through a bolt, the inner wall of the second separation cylinder is movably clamped with an air homogenizing disc, the air homogenizing disc is respectively connected with the upper end and the lower end of the outer wall of the first separation cylinder through a guide pipe, a one-way electric control valve is arranged at the joint, the filter membrane frame comprises two end plates and connecting columns, the two end plates are respectively and movably clamped at the upper end and the lower end in the second separation cylinder, the connecting columns are arranged in plurality, each connecting column is uniformly distributed between the two end plates and positioned at the outer edge of the end plates, 3-6 through holes are symmetrically arranged on the two end plates, the number of the membrane sleeves is consistent with the number of the through holes, each membrane sleeve is respectively and movably clamped between each group of the through holes which are corresponding up and down, the inner part of each membrane sleeve is movably clamped with an air inlet ring, each air inlet ring is respectively communicated with the air homogenizing disc, second filter membranes are arranged in the membrane sleeves and positioned at the upper end and the lower end of the air inlet ring;
the power assembly comprises a first motor and a supercharger, the first motor is fixedly arranged at the top end of the outer portion of the first separating cylinder, the first motor provides power for the rotating shaft, the supercharger is fixedly arranged on the bottom plate, and the air outlet of the supercharger is communicated with the first separating cylinder.
The controller is respectively and electrically connected with the pressure sensor, the first motor and the supercharger.
The second-stage membrane assembly further comprises a filter pressing component, the filter pressing component comprises a second motor and rotary screws, the number of the rotary screws is consistent with the number of the membrane sleeves correspondingly, the bottom ends of the rotary screws are respectively rotatably clamped with the inner bottoms of the corresponding membrane sleeves, the top ends of the rotary screws penetrate through the corresponding membrane sleeves and are provided with connecting gears, each rotary screw is connected with two extrusion discs in a threaded manner, the outer walls of the two extrusion discs are respectively abutted against the second filter membrane, the rotating directions of the two extrusion discs are opposite, two guide slide bars are symmetrically arranged in each membrane sleeve, and the two guide slide bars penetrate through the two extrusion discs respectively; the second motor is fixedly arranged on the sealing cover, the output of the second motor penetrates through the sealing cover and is provided with transmission gears, and the transmission gears are respectively in meshed connection with the connecting gears.
Further, the outer border department of each extrusion dish all is provided with flexible rubber circle, through setting up flexible rubber circle, not only can reduce the extrusion dish and remove the friction damage that the in-process caused the second filter membrane, can improve the sealed effect of being connected between extrusion dish and the second filter membrane moreover to improve the filter-pressing effect of extrusion dish to organic waste gas.
Further, two inside second filter membranes of each membrane cover all through elastic rubber cover and membrane cover fixed connection, and the extrusion dish reciprocates the in-process, can produce the ascending thrust of vertical side to the second filter membrane, utilizes the elastic rubber cover can slow down the thrust that the second filter membrane bore in vertical side, avoids tearing of second filter membrane, improves the life of second filter membrane.
Furthermore, the shaking wheel is movably clamped with the mounting block, a damping spring is arranged at the joint, and the shaking wheel and the arc-shaped groove can be slowed down through the damping spring, so that the operation stability of the device is improved.
Furtherly, the slip joint has two clearance dishes in the axis of rotation, and two clearance dishes are located two relative one sides of movable filter respectively, and it rotates the joint with two movable filter respectively, all is provided with the clearance on two clearance dishes and scrapes the strip, and the strip is scraped in the clearance and first filter membrane surface butt, utilizes the clearance to scrape the strip and clears up the organic pollutant that adsorbs on first filter membrane surface, can guarantee the effective operation of first filter membrane.
Furthermore, the first filter membrane and the second filter membrane both adopt hollow fiber membranes, the aperture of the first filter membrane is 25 microns, the aperture of the second filter membrane is 10 microns, and through the arrangement of the hollow fiber membranes with different apertures, the thorough separation and purification of the organic waste gas are facilitated.
Furthermore, the upper end and the lower end of the interior of the first separation cylinder are respectively provided with a stabilizing ring, the two stabilizing rings are respectively in sliding clamping connection with the two shaking plates, and the stabilizing rings provide supporting force for the shaking plates, so that the shaking plates are prevented from being deformed due to extrusion in the running process, and the shaking plates are ensured to always rotate on a horizontal plane.
A secondary membrane separation and recovery method for organic waste gas comprises the following steps:
s1, respectively connecting the first motor, the second motor, the supercharger and the one-way electric control valve with an external power supply, and controlling the second motor, the supercharger and the one-way electric control valve to be opened by using a controller;
s2, allowing the organic waste gas to enter a first separation barrel, and allowing the organic waste gas to respectively pass through first filter membranes on two movable filter plates under the action of pressure, wherein the organic pollutants are blocked at one sides of the two first filter membranes;
s3, treating organic waste gas by the primary membrane module in stages, allowing the organic waste gas to enter a second separation barrel, allowing the organic waste gas to enter each air inlet ring through an air homogenizing disc, controlling a second motor to rotate forwards by using a controller, closing a one-way electric control valve, allowing each rotary lead screw to rotate clockwise, enabling two extrusion discs in each membrane sleeve to approach each other, extruding and filtering the organic waste gas entering the membrane sleeve, and discharging the filtered organic waste gas out of the second separation barrel through an exhaust port to be collected;
s4, controlling a second motor to rotate reversely through a controller, starting a one-way electric control valve, enabling each rotary lead screw to rotate anticlockwise, enabling two extrusion discs in each membrane sleeve to mutually principle, and enabling organic waste gas to enter the membrane sleeve again for extrusion and filtration;
s5, with the reduction of the permeability of the first filter membrane, the two movable filter plates are far away from each other along the rotating shaft under the action of pressure, and finally the shaking wheel on the shaking plate is in contact with the arc-shaped groove on the annular shaking sleeve; in the process of rotating the shaking plates, each shaking wheel is constantly contacted and separated from the arc-shaped groove, so that the movable filter plates shake up and down, the permeability of the first filter membrane is recovered to be normal, the two movable filter plates reset under the action of the extrusion spring, and organic pollutants deposited in the first separation barrel are cleaned through the cleaning door.
Compared with the prior art, the invention has the beneficial effects that: the device has reasonable structural design, realizes secondary purification and separation treatment of the organic waste gas by utilizing the hollow fiber membranes with different apertures, and effectively reduces the content of organic pollutants in the waste gas, thereby reducing the threat of the organic waste gas to the environmental quality; meanwhile, in the use process of the primary membrane component, the cleaning disc and the shaking plate are used for cleaning the organic pollutants adsorbed on the first filter membrane, so that the effective service life of the first filter membrane is prolonged, and the working efficiency of equipment is improved; the invention has high automation operation degree, reduces the manpower input in the organic waste gas treatment process, thereby reducing the burden of workers.
Drawings
FIG. 1 is a longitudinal section of the present invention;
FIG. 2 is an external structural view of the present invention;
FIG. 3 is a schematic structural view of a movable filter plate of the present invention;
FIG. 4 is a schematic view of the connection of the cleaning disk of the present invention to a movable filter plate;
FIG. 5 is a schematic view of the connection of the shaker plate, the movable filter plate and the rotating shaft of the present invention;
FIG. 6 is a schematic structural view of a membrane sleeve of the present invention;
FIG. 7 is a schematic view of the connection of the membrane housing and the membrane filtration cartridge of the present invention;
wherein, 1-primary membrane component, 10-bottom plate, 11-first separating cylinder, 110-cleaning door, 12-movable filter plate, 120-annular shaking sleeve, 121-arc groove, 13-shaking plate, 130-mounting block, 131-shaking wheel, 132-damping spring, 14-rotating shaft, 140-extrusion spring, 15-first filter membrane, 16-cleaning disk, 160-cleaning scraping strip, 17-stabilizing ring, 2-secondary membrane component, 20-second separating cylinder, 200-exhaust port, 201-sealing cover, 21-filter membrane frame, 210-end plate, 211-connecting column, 212-through hole, 22-membrane sleeve, 220-air inlet ring, 221-guiding slide rod, 23-air homogenizing disk, 230-one-way electric control valve, 24-a second filter membrane, 240-an elastic rubber sleeve, 25-a filter pressing component, 250-a second motor, 251-a rotary screw rod, 252-a connecting gear, 253-an extrusion disc, 2530-a flexible rubber ring, 254-a transmission gear, 3-a power assembly, 30-a first motor and 31-a supercharger.
Detailed Description
Example 1: the organic waste gas two-stage membrane separation and recovery device shown in fig. 1, 2, 3, 4 and 5 comprises a primary membrane module 1, a secondary membrane module 2, a power module 3 and a controller; the primary membrane module 1 and the secondary membrane module 2 are arranged on the bottom plate 10 in parallel, and the primary membrane module 1 comprises a first separation cylinder 11, a movable filter plate 12 and a shaking plate 13; a cleaning door 110 is movably hinged on the side wall of the first separating barrel 11, a rotating shaft 14 is vertically arranged in the first separating barrel 11, the upper end and the lower end of the rotating shaft 14 are respectively rotatably clamped with the inner wall of the first separating barrel 11, and two extrusion springs 140 are movably sleeved on the rotating shaft 14; a pressure sensor is arranged in the first separating cylinder 11, two movable filter plates 12 are arranged, the two movable filter plates 12 are respectively movably sleeved on the rotating shaft 14 and are positioned between the two extrusion springs 140, a first filter membrane 15 is arranged on one side opposite to the two movable filter plates 12, the edges of the two movable filter plates 12 are respectively in sliding clamping connection with the inner wall of the first separating cylinder 11, annular shaking sleeves 120 are arranged on the opposite sides of the two movable filter plates 12, and a plurality of arc-shaped grooves 121 are uniformly distributed on the annular shaking sleeves 120; two shaking plates 13 are arranged, the two shaking plates 13 are respectively sleeved on the rotating shaft 14 and are positioned at the far sides of the two extrusion springs 140, the opposite sides of the two shaking plates 13 are rotatably clamped with a plurality of shaking wheels 131 through mounting blocks 130, the number of the shaking wheels 131 on the same shaking plate 13 is corresponding to the number of the arc-shaped grooves 121 on the corresponding annular shaking sleeve 120, and the upper and lower positions of the shaking wheels are corresponding; the shaking wheel 131 is movably clamped with the mounting block 130, a damping spring 132 is arranged at the joint, and the shaking wheel 131 and the arc-shaped groove 121 can be slowed down through the damping spring 132, so that the operation stability of the device is improved; the rotating shaft 14 is slidably clamped with two cleaning discs 16, the two cleaning discs 16 are respectively positioned at one side opposite to the two movable filter plates 12 and are respectively rotatably clamped with the two movable filter plates 12, the two cleaning discs 16 are respectively provided with a cleaning scraping strip 160, and the cleaning scraping strips 160 are abutted against the surface of the first filter membrane 15;
as shown in fig. 1, 6, 7, the secondary membrane subassembly 2 includes a second separation cartridge 20, a membrane holder 21, a membrane sleeve 22, and a filter press member 25; the side wall of the second separation cylinder 20 is provided with an exhaust port 200, the upper end of the second separation cylinder is movably connected with a sealing cover 201 through a bolt, the inner wall of the second separation cylinder 20 is movably clamped with an air homogenizing disc 23, the air homogenizing disc 23 is respectively connected with the upper end and the lower end of the outer wall of the first separation cylinder 11 through a guide pipe, a one-way electric control valve 230 is arranged at the joint, the filter membrane frame 21 comprises two end plates 210 and a connecting column 211, the two end plates 210 are respectively and movably clamped at the upper end and the lower end in the second separation cylinder 20, the connecting column 211 is provided with a plurality of connecting columns 211, the connecting columns 211 are uniformly distributed between the two end plates 210 and positioned at the outer edge of the end plates 210, the two end plates 210 are symmetrically provided with 4 through holes 212, the number of the membrane sleeves 22 is consistent with the number of the through holes 212, each membrane sleeve 22 is respectively and movably clamped between the corresponding upper and lower through holes 212, an air inlet ring 220 is movably clamped in each membrane sleeve 22, each air inlet ring 220 is respectively communicated with the air homogenizing disc 23, and second filter membranes 24 are arranged inside each membrane sleeve 22 and positioned at the upper end and the lower end of each air inlet ring 220; the first filter membrane 15 and the second filter membrane 24 both adopt hollow fiber membranes, the aperture of the first filter membrane 15 is 25 microns, the aperture of the second filter membrane 24 is 10 microns, and the hollow fiber membranes with different apertures are arranged, so that the thorough separation and purification of the organic waste gas are facilitated; the filter pressing component 25 comprises a second motor 250 and rotary lead screws 251, the number of the rotary lead screws 251 corresponds to the number of the membrane sleeves 22, the bottom ends of the rotary lead screws 251 are respectively and rotatably clamped with the inner bottoms of the corresponding membrane sleeves 22, the top ends of the rotary lead screws 251 penetrate through the corresponding membrane sleeves 22 and are provided with connecting gears 252, two extrusion discs 253 are respectively connected to the rotary lead screws 251 in a threaded manner, the outer walls of the two extrusion discs 253 are respectively abutted to the second filter membrane 24, the rotating directions of the two extrusion discs 253 are opposite, two guide slide bars 221 are respectively and symmetrically arranged in each membrane sleeve 22, and the two guide slide bars 221 penetrate through the two extrusion discs 253 respectively; the second motor 250 is fixedly arranged on the sealing cover 201, the output of the second motor 250 penetrates through the sealing cover 201 and is provided with a transmission gear 254, and the transmission gears 254 are respectively in meshed connection with the connecting gears 252; the outer border department of each extrusion dish 253 all is provided with flexible rubber circle 2530, through setting up flexible rubber circle 2530, not only can reduce the friction damage that extrusion dish 253 removed the in-process and led to the fact second filter membrane 24, can improve the sealed effect of being connected between extrusion dish 253 and the second filter membrane 24 moreover to improve the filter-pressing effect of extrusion dish 253 to organic waste gas.
As shown in fig. 1, the power assembly 3 includes a first motor 30 and a supercharger 31, the first motor 30 is fixedly disposed at the top end of the exterior of the first separation barrel 11, the first motor 30 provides power for the rotating shaft 14, the supercharger 31 is fixedly disposed on the bottom plate 10, and an air outlet of the supercharger 31 is communicated with the first separation barrel 11.
The controller is respectively electrically connected with the pressure sensor, the first motor 30, the second motor 250, the supercharger 32 and the one-way electric control valve 230; the controller, the pressure sensor, the first motor 30, the second motor 250, the pressure booster 32 and the one-way electronic control valve 230 are all commercially available products.
The method for carrying out secondary membrane separation and recovery on the organic waste gas by using the device of the embodiment comprises the following steps:
s1, respectively connecting the first motor 30, the second motor 250, the supercharger 31 and the one-way electric control valve 230 with an external power supply, and controlling the second motor 250, the supercharger 31 and the one-way electric control valve 230 to be opened and closed by using a controller;
s2, allowing the organic waste gas to enter the first separation barrel 11, respectively passing through the first filter membranes 15 on the two movable filter plates 12 under the action of pressure, and blocking the organic pollutants on the opposite sides of the two first filter membranes 15;
s3, treating organic waste gas by the primary membrane module 1 in stages, allowing the organic waste gas to enter the second separation barrel 20 through the gas homogenizing disc 23, controlling the second motor 250 to rotate forwards by using the controller, closing the one-way electric control valve 230, allowing each rotary lead screw 251 to rotate clockwise, allowing two extrusion discs 253 in each membrane sleeve 22 to approach each other, extruding and filtering the organic waste gas entering the membrane sleeve 22, and allowing the filtered organic waste gas to be discharged out of the second separation barrel 20 through the exhaust port 200 for collection;
s4, the controller controls the second motor 250 to rotate reversely, the one-way electric control valve 230 is opened, each rotary lead screw 251 rotates anticlockwise, the two extrusion discs 253 in each membrane sleeve 22 mutually principle, and organic waste gas enters the membrane sleeve 22 again for extrusion and filtration;
s5, with the permeability of the first filter membrane 15 being reduced, the two movable filter plates 12 are separated from each other along the rotating shaft 14 under the action of pressure, and finally the shaking wheel 131 on the shaking plate 13 is in contact with the arc-shaped groove 121 on the annular shaking sleeve 120, at the moment, the pressure sensor transmits a signal to the controller, the controller controls the first motor 30 to be started, the first motor 30 drives the cleaning disc 16 to rotate through the rotating shaft 14, and the cleaning scraping strip 160 is used for scraping off organic pollutants blocked on the surface of the first filter membrane 15; meanwhile, in the rotating process of the shaking plate 13, each shaking wheel 131 is continuously contacted with and separated from the arc-shaped groove 121, so that the movable filter plates 12 shake up and down, the permeability of the first filter membrane 15 is restored to normal, the two movable filter plates 12 are reset under the action of the extrusion spring 140, and organic pollutants deposited in the first separation barrel 11 are cleaned through the cleaning door 110.
Example 2: as shown in fig. 1, 2, 3 and 5, the organic waste gas two-stage membrane separation and recovery device comprises a primary membrane module 1, a secondary membrane module 2, a power module 3 and a controller; the primary membrane module 1 and the secondary membrane module 2 are arranged on the bottom plate 10 in parallel, and the primary membrane module 1 comprises a first separation cylinder 11, a movable filter plate 12 and a shaking plate 13; a cleaning door 110 is movably hinged on the side wall of the first separating barrel 11, a rotating shaft 14 is vertically arranged in the first separating barrel 11, the upper end and the lower end of the rotating shaft 14 are respectively rotatably clamped with the inner wall of the first separating barrel 11, and two extrusion springs 140 are movably sleeved on the rotating shaft 14; a pressure sensor is arranged in the first separating cylinder 11, two movable filter plates 12 are arranged, the two movable filter plates 12 are respectively movably sleeved on the rotating shaft 14 and are positioned between the two extrusion springs 140, a first filter membrane 15 is arranged on one side opposite to the two movable filter plates 12, the edges of the two movable filter plates 12 are respectively in sliding clamping connection with the inner wall of the first separating cylinder 11, annular shaking sleeves 120 are arranged on the opposite sides of the two movable filter plates 12, and a plurality of arc-shaped grooves 121 are uniformly distributed on the annular shaking sleeves 120; two shaking plates 13 are arranged, the two shaking plates 13 are respectively sleeved on the rotating shaft 14 and are positioned at the far sides of the two extrusion springs 140, the opposite sides of the two shaking plates 13 are rotatably clamped with a plurality of shaking wheels 131 through mounting blocks 130, the number of the shaking wheels 131 on the same shaking plate 13 is corresponding to the number of the arc-shaped grooves 121 on the corresponding annular shaking sleeve 120, and the upper and lower positions of the shaking wheels are corresponding; the upper end and the lower end of the interior of the first separation barrel 11 are respectively provided with a stabilizing ring 17, the two stabilizing rings 17 are respectively in sliding clamping connection with the two shaking plates 13, the stabilizing rings 17 provide supporting force for the shaking plates 13, deformation caused by extrusion in the running process of the shaking plates 13 is avoided, and the shaking plates 13 are ensured to always rotate on a horizontal plane;
as shown in fig. 1, 6, 7, the secondary membrane subassembly 2 includes a second separation cartridge 20, a membrane holder 21, a membrane sleeve 22, and a filter press member 25; the side wall of the second separation cylinder 20 is provided with an exhaust port 200, the upper end of the second separation cylinder is movably connected with a sealing cover 201 through a bolt, the inner wall of the second separation cylinder 20 is movably clamped with an air homogenizing disc 23, the air homogenizing disc 23 is respectively connected with the upper end and the lower end of the outer wall of the first separation cylinder 11 through a guide pipe, a one-way electric control valve 230 is arranged at the joint, the filter membrane frame 21 comprises two end plates 210 and a connecting column 211, the two end plates 210 are respectively and movably clamped at the upper end and the lower end in the second separation cylinder 20, the connecting column 211 is provided with a plurality of connecting columns 211, the connecting columns 211 are uniformly distributed between the two end plates 210 and positioned at the outer edge of the end plates 210, the two end plates 210 are symmetrically provided with 4 through holes 212, the number of the membrane sleeves 22 is consistent with the number of the through holes 212, each membrane sleeve 22 is respectively and movably clamped between the corresponding upper and lower through holes 212, an air inlet ring 220 is movably clamped in each membrane sleeve 22, each air inlet ring 220 is respectively communicated with the air homogenizing disc 23, the second filter membranes 24 are arranged at the upper end and the lower end of each membrane sleeve 22 and positioned at the upper end and the lower end of the air inlet ring 220, the two second filter membranes 24 in each membrane sleeve 22 are fixedly connected with the membrane sleeve 22 through the elastic rubber sleeve 240, and in the up-and-down moving process of the extrusion disc 253, the thrust in the vertical direction can be generated on the second filter membranes 24, the thrust borne by the second filter membranes 24 in the vertical direction can be reduced by utilizing the elastic rubber sleeve 240, so that the second filter membranes 24 are prevented from being torn, and the service life of the second filter membranes 24 is prolonged; the first filter membrane 15 and the second filter membrane 24 both adopt hollow fiber membranes, the aperture of the first filter membrane 15 is 25 microns, the aperture of the second filter membrane 24 is 10 microns, and the hollow fiber membranes with different apertures are arranged, so that the thorough separation and purification of the organic waste gas are facilitated; the filter pressing component 25 comprises a second motor 250 and rotary lead screws 251, the number of the rotary lead screws 251 corresponds to the number of the membrane sleeves 22, the bottom ends of the rotary lead screws 251 are respectively and rotatably clamped with the inner bottoms of the corresponding membrane sleeves 22, the top ends of the rotary lead screws 251 penetrate through the corresponding membrane sleeves 22 and are provided with connecting gears 252, two extrusion discs 253 are respectively connected to the rotary lead screws 251 in a threaded manner, the outer walls of the two extrusion discs 253 are respectively abutted to the second filter membrane 24, the rotating directions of the two extrusion discs 253 are opposite, two guide slide bars 221 are respectively and symmetrically arranged in each membrane sleeve 22, and the two guide slide bars 221 penetrate through the two extrusion discs 253 respectively; the second motor 250 is fixedly arranged on the sealing cover 201, the output of the second motor 250 penetrates through the sealing cover 201 and is provided with a transmission gear 254, and the transmission gears 254 are respectively in meshed connection with the connecting gears 252; the outer border department of each extrusion dish 253 all is provided with flexible rubber circle 2530, through setting up flexible rubber circle 2530, not only can reduce the friction damage that extrusion dish 253 removed the in-process and led to the fact second filter membrane 24, can improve the sealed effect of being connected between extrusion dish 253 and the second filter membrane 24 moreover to improve the filter-pressing effect of extrusion dish 253 to organic waste gas.
As shown in fig. 1, the power assembly 3 includes a first motor 30 and a supercharger 31, the first motor 30 is fixedly disposed at the top end of the exterior of the first separation barrel 11, the first motor 30 provides power for the rotating shaft 14, the supercharger 31 is fixedly disposed on the bottom plate 10, and an air outlet of the supercharger 31 is communicated with the first separation barrel 11.
The controller is respectively electrically connected with the pressure sensor, the first motor 30, the second motor 250, the pressure booster 32 and the one-way electric control valve 230, and the controller, the pressure sensor, the first motor 30, the second motor 250, the pressure booster 32 and the one-way electric control valve 230 are all commercially available products.
The method for carrying out secondary membrane separation and recovery on the organic waste gas by using the device of the embodiment comprises the following steps:
s1, respectively connecting the first motor 30, the second motor 250, the supercharger 31 and the one-way electric control valve 230 with an external power supply, and controlling the second motor 250, the supercharger 31 and the one-way electric control valve 230 to be opened and closed by using a controller;
s2, allowing the organic waste gas to enter the first separation barrel 11, respectively passing through the first filter membranes 15 on the two movable filter plates 12 under the action of pressure, and blocking the organic pollutants on the opposite sides of the two first filter membranes 15;
s3, the organic waste gas enters the second separation barrel 20 after being treated by the primary membrane module 1, and enters each air inlet ring 220 through the air homogenizing disc 23, the controller is used for controlling the second motor 250 to rotate forwards, the one-way electric control valve 230 is closed at the same time, each rotating lead screw 251 rotates clockwise, two extrusion discs 253 in each membrane sleeve 22 are close to each other, the organic waste gas entering the membrane sleeve 22 is extruded and filtered, and the filtered organic waste gas is discharged out of the second separation barrel 20 through the exhaust port 200 to be collected;
s4, the controller controls the second motor 250 to rotate reversely, the one-way electric control valve 230 is opened, each rotary lead screw 251 rotates anticlockwise, the two extrusion discs 253 in each membrane sleeve 22 mutually principle, and organic waste gas enters the membrane sleeve 22 again for extrusion and filtration;
s5, along with the reduction of the permeability of the first filter membrane 15, the two movable filter plates 12 are far away from each other along the rotating shaft 14 under the action of pressure, and finally the shaking wheels 131 on the shaking plate 13 are in contact with the arc-shaped grooves 121 on the annular shaking sleeve 120, and in the rotating process of the shaking plate 13, each shaking wheel 131 is continuously in contact with and separated from the arc-shaped grooves 121, so that the movable filter plates 12 shake up and down, the permeability of the first filter membrane 15 is recovered to be normal, the two movable filter plates 12 are reset again under the action of the extrusion spring 140, and organic pollutants deposited in the first separation barrel 11 are cleaned through the cleaning door 110.
Example 3: the organic waste gas two-stage membrane separation and recovery device shown in fig. 1, 2, 3, 4 and 5 comprises a primary membrane module 1, a secondary membrane module 2, a power module 3 and a controller; the primary membrane module 1 and the secondary membrane module 2 are arranged on the bottom plate 10 in parallel, and the primary membrane module 1 comprises a first separation cylinder 11, a movable filter plate 12 and a shaking plate 13; a cleaning door 110 is movably hinged on the side wall of the first separating barrel 11, a rotating shaft 14 is vertically arranged in the first separating barrel 11, the upper end and the lower end of the rotating shaft 14 are respectively rotatably clamped with the inner wall of the first separating barrel 11, and two extrusion springs 140 are movably sleeved on the rotating shaft 14; a pressure sensor is arranged in the first separating cylinder 11, two movable filter plates 12 are arranged, the two movable filter plates 12 are respectively movably sleeved on the rotating shaft 14 and are positioned between the two extrusion springs 140, a first filter membrane 15 is arranged on one side opposite to the two movable filter plates 12, the edges of the two movable filter plates 12 are respectively in sliding clamping connection with the inner wall of the first separating cylinder 11, annular shaking sleeves 120 are arranged on the opposite sides of the two movable filter plates 12, and a plurality of arc-shaped grooves 121 are uniformly distributed on the annular shaking sleeves 120; two shaking plates 13 are arranged, the two shaking plates 13 are respectively sleeved on the rotating shaft 14 and are positioned at the far sides of the two extrusion springs 140, the opposite sides of the two shaking plates 13 are rotatably clamped with a plurality of shaking wheels 131 through mounting blocks 130, the number of the shaking wheels 131 on the same shaking plate 13 is corresponding to the number of the arc-shaped grooves 121 on the corresponding annular shaking sleeve 120, and the upper and lower positions of the shaking wheels are corresponding; the shaking wheel 131 is movably clamped with the mounting block 130, a damping spring 132 is arranged at the joint, and the shaking wheel 131 and the arc-shaped groove 121 can be slowed down through the damping spring 132, so that the operation stability of the device is improved; the rotating shaft 14 is slidably clamped with two cleaning discs 16, the two cleaning discs 16 are respectively positioned at one side opposite to the two movable filter plates 12 and are respectively rotatably clamped with the two movable filter plates 12, the two cleaning discs 16 are respectively provided with a cleaning scraping strip 160, and the cleaning scraping strips 160 are abutted against the surface of the first filter membrane 15; the upper end and the lower end of the interior of the first separation barrel 11 are respectively provided with a stabilizing ring 17, the two stabilizing rings 17 are respectively in sliding clamping connection with the two shaking plates 13, the stabilizing rings 17 provide supporting force for the shaking plates 13, deformation caused by extrusion in the running process of the shaking plates 13 is avoided, and the shaking plates 13 are ensured to always rotate on a horizontal plane;
as shown in fig. 1, 6, 7, the secondary membrane subassembly 2 includes a second separation cartridge 20, a membrane holder 21, a membrane sleeve 22, and a filter press member 25; the side wall of the second separation cylinder 20 is provided with an exhaust port 200, the upper end of the second separation cylinder is movably connected with a sealing cover 201 through a bolt, the inner wall of the second separation cylinder 20 is movably clamped with an air homogenizing disc 23, the air homogenizing disc 23 is respectively connected with the upper end and the lower end of the outer wall of the first separation cylinder 11 through a guide pipe, a one-way electric control valve 230 is arranged at the joint, the filter membrane frame 21 comprises two end plates 210 and a connecting column 211, the two end plates 210 are respectively and movably clamped at the upper end and the lower end in the second separation cylinder 20, the connecting column 211 is provided with a plurality of connecting columns 211, the connecting columns 211 are uniformly distributed between the two end plates 210 and positioned at the outer edge of the end plates 210, the two end plates 210 are symmetrically provided with 4 through holes 212, the number of the membrane sleeves 22 is consistent with the number of the through holes 212, each membrane sleeve 22 is respectively and movably clamped between the corresponding upper and lower through holes 212, an air inlet ring 220 is movably clamped in each membrane sleeve 22, each air inlet ring 220 is respectively communicated with the air homogenizing disc 23, the second filter membranes 24 are arranged at the upper end and the lower end of each membrane sleeve 22 and positioned at the upper end and the lower end of the air inlet ring 220, the two second filter membranes 24 in each membrane sleeve 22 are fixedly connected with the membrane sleeve 22 through the elastic rubber sleeve 240, and in the up-and-down moving process of the extrusion disc 253, the thrust in the vertical direction can be generated on the second filter membranes 24, the thrust borne by the second filter membranes 24 in the vertical direction can be reduced by utilizing the elastic rubber sleeve 240, so that the second filter membranes 24 are prevented from being torn, and the service life of the second filter membranes 24 is prolonged; the first filter membrane 15 and the second filter membrane 24 both adopt hollow fiber membranes, the aperture of the first filter membrane 15 is 25 microns, the aperture of the second filter membrane 24 is 10 microns, and the hollow fiber membranes with different apertures are arranged, so that the thorough separation and purification of the organic waste gas are facilitated; the filter pressing component 25 comprises a second motor 250 and rotary lead screws 251, the number of the rotary lead screws 251 corresponds to the number of the membrane sleeves 22, the bottom ends of the rotary lead screws 251 are respectively and rotatably clamped with the inner bottoms of the corresponding membrane sleeves 22, the top ends of the rotary lead screws 251 penetrate through the corresponding membrane sleeves 22 and are provided with connecting gears 252, two extrusion discs 253 are respectively connected to the rotary lead screws 251 in a threaded manner, the outer walls of the two extrusion discs 253 are respectively abutted to the second filter membrane 24, the rotating directions of the two extrusion discs 253 are opposite, two guide slide bars 221 are respectively and symmetrically arranged in each membrane sleeve 22, and the two guide slide bars 221 penetrate through the two extrusion discs 253 respectively; the second motor 250 is fixedly arranged on the sealing cover 201, the output of the second motor 250 penetrates through the sealing cover 201 and is provided with a transmission gear 254, and the transmission gears 254 are respectively in meshed connection with the connecting gears 252; the outer edge of each extrusion disc 253 is provided with a flexible rubber ring 2530, and by means of the flexible rubber rings 2530, friction damage to the second filter membrane 24 in the moving process of the extrusion disc 253 can be reduced, the sealing effect of the connection between the extrusion disc 253 and the second filter membrane 24 can be improved, and the filter pressing effect of the extrusion disc 253 on organic waste gas is improved;
as shown in fig. 1, the power assembly 3 includes a first motor 30 and a supercharger 31, the first motor 30 is fixedly disposed at the top end of the exterior of the first separation barrel 11, the first motor 30 provides power for the rotating shaft 14, the supercharger 31 is fixedly disposed on the bottom plate 10, and an air outlet of the supercharger 31 is communicated with the first separation barrel 11.
The controller is respectively electrically connected with the pressure sensor, the first motor 30, the second motor 250, the supercharger 32 and the one-way electric control valve 230; the controller, the pressure sensor, the first motor 30, the second motor 250, the pressure booster 32 and the one-way electronic control valve 230 are all commercially available products.
The method for carrying out secondary membrane separation and recovery on the organic waste gas by using the device of the embodiment comprises the following steps:
s1, respectively connecting the first motor 30, the second motor 250, the supercharger 31 and the one-way electric control valve 230 with an external power supply, and controlling the second motor 250, the supercharger 31 and the one-way electric control valve 230 to be opened and closed by using a controller;
s2, allowing the organic waste gas to enter the first separation barrel 11, respectively passing through the first filter membranes 15 on the two movable filter plates 12 under the action of pressure, and blocking the organic pollutants on the opposite sides of the two first filter membranes 15;
s3, treating organic waste gas by the primary membrane module 1 in stages, allowing the organic waste gas to enter the second separation barrel 20 through the gas homogenizing disc 23, controlling the second motor 250 to rotate forwards by using the controller, closing the one-way electric control valve 230, allowing each rotary lead screw 251 to rotate clockwise, allowing two extrusion discs 253 in each membrane sleeve 22 to approach each other, extruding and filtering the organic waste gas entering the membrane sleeve 22, and allowing the filtered organic waste gas to be discharged out of the second separation barrel 20 through the exhaust port 200 for collection;
s4, the controller controls the second motor 250 to rotate reversely, the one-way electric control valve 230 is opened, each rotary lead screw 251 rotates anticlockwise, the two extrusion discs 253 in each membrane sleeve 22 mutually principle, and organic waste gas enters the membrane sleeve 22 again for extrusion and filtration;
s5, with the permeability of the first filter membrane 15 being reduced, the two movable filter plates 12 are separated from each other along the rotating shaft 14 under the action of pressure, and finally the shaking wheel 131 on the shaking plate 13 is in contact with the arc-shaped groove 121 on the annular shaking sleeve 120, at the moment, the pressure sensor transmits a signal to the controller, the controller controls the first motor 30 to be started, the first motor 30 drives the cleaning disc 16 to rotate through the rotating shaft 14, and the cleaning scraping strip 160 is used for scraping off organic pollutants blocked on the surface of the first filter membrane 15; meanwhile, in the rotating process of the shaking plate 13, each shaking wheel 131 is continuously contacted with and separated from the arc-shaped groove 121, so that the movable filter plates 12 shake up and down, the permeability of the first filter membrane 15 is restored to normal, the two movable filter plates 12 are reset under the action of the extrusion spring 140, and organic pollutants deposited in the first separation barrel 11 are cleaned through the cleaning door 110.
Claims (10)
1. The organic waste gas secondary membrane separation and recovery device is characterized by comprising a primary membrane component (1), a secondary membrane component (2), a power component (3) and a controller; the primary membrane module (1) and the secondary membrane module (2) are arranged on the bottom plate (10) in parallel, and the primary membrane module (1) comprises a first separation cylinder (11), a movable filter plate (12) and a shaking plate (13); the side wall of the first separating cylinder (11) is movably hinged with a cleaning door (110), a rotating shaft (14) is vertically arranged in the first separating cylinder (11), the upper end and the lower end of the rotating shaft (14) are respectively rotatably clamped with the inner wall of the first separating cylinder (11), two extrusion springs (140) are movably sleeved on the rotating shaft (14), a pressure sensor is arranged in the first separating cylinder (11), two movable filter plates (12) are arranged, the two movable filter plates (12) are respectively movably sleeved on the rotating shaft (14) and are positioned between the two extrusion springs (140), one sides of the two movable filter plates (12) opposite to each other are respectively provided with a first filter membrane (15), the edges of the two movable filter plates (12) are respectively slidably clamped with the inner wall of the first separating cylinder (11), and one sides of the two movable filter plates (12) opposite to each other are respectively provided with an annular shaking sleeve (120), a plurality of arc-shaped grooves (121) are uniformly distributed on the annular shaking sleeve (120); the two shaking plates (13) are respectively sleeved on the rotating shaft (14) and are positioned on one sides far away from the two extrusion springs (140), one sides, opposite to the two shaking plates (13), of the two shaking plates are rotatably clamped with a plurality of shaking wheels (131) through mounting blocks (130), the shaking wheels (131) on the same shaking plate (13) correspond to the arc-shaped grooves (121) on the corresponding annular shaking sleeve (120) in number and are corresponding to the upper and lower positions;
the secondary membrane subassembly (2) comprises a second separation cartridge (20), a filter membrane holder (21) and a membrane sleeve (22); the filter membrane is characterized in that an exhaust port (200) is formed in the side wall of the second separating cylinder (20), a sealing cover (201) is movably connected to the upper end of the side wall of the second separating cylinder (20) through a bolt, an air homogenizing disc (23) is movably clamped on the inner wall of the second separating cylinder (20) and is connected with the upper end and the lower end of the outer wall of the first separating cylinder (11) through a guide pipe, a one-way electric control valve (230) is arranged at the joint, the filter membrane frame (21) comprises end plates (210) and connecting columns (211), the two end plates (210) are arranged in number, the two end plates (210) are movably clamped at the upper end and the lower end of the inner part of the second separating cylinder (20) respectively, the connecting columns (211) are arranged in a plurality of numbers, the connecting columns (211) are uniformly distributed between the two end plates (210) and are located at the outer edge of the end plates (210), 3-6 through holes (212) are symmetrically arranged on the two end plates (210), and the number of the membrane sleeves (22) is consistent with the number of the through holes (212), each membrane sleeve (22) is movably clamped between each group of through holes (212) which correspond to each other up and down, an air inlet ring (220) is movably clamped inside each membrane sleeve (22), each air inlet ring (220) is communicated with the air homogenizing disc (23) respectively, and second filter membranes (24) are arranged inside each membrane sleeve (22) and positioned at the upper end and the lower end of the air inlet ring (220);
the power assembly (3) comprises a first motor (30) and a supercharger (31), wherein the first motor (30) is fixedly arranged at the top end of the outer portion of the first separating cylinder (11), the first motor (30) provides power for the rotating shaft (14), the supercharger (31) is fixedly arranged on the bottom plate (10), and the air outlet of the supercharger (31) is communicated with the first separating cylinder (11).
The controller is respectively electrically connected with the pressure sensor, the first motor (30) and the supercharger (32).
2. The organic waste gas secondary membrane separation and recovery device according to claim 1, wherein the secondary membrane module further comprises a filter pressing component (25), the filter pressing component (25) comprises a second motor (250) and rotary screws (251), the number of the rotary screws (251) is corresponding to the number of the membrane sleeves (22), the bottom end of each rotary screw (251) is rotatably clamped with the bottom of the corresponding membrane sleeve (22), the top end of each rotary screw (251) penetrates through the corresponding membrane sleeve (22) and is provided with a connecting gear (252), two extrusion discs (253) are in threaded connection with each rotary screw (251), the outer walls of the two extrusion discs (253) are respectively abutted against the second filter membrane (24), the rotating directions of the two extrusion discs (253) are opposite, two guide slide rods (221) are symmetrically arranged inside each membrane sleeve (22), the two guide sliding rods (221) respectively penetrate through the two extrusion discs (253); the second motor (250) is fixedly arranged on the sealing cover (201), the output of the second motor (250) penetrates through the sealing cover (201) and is provided with a transmission gear (254), and the transmission gear (254) is respectively in meshed connection with each connecting gear (252).
3. The secondary membrane separation and recovery device for organic waste gas as claimed in claim 2, wherein a flexible rubber ring (2530) is disposed at the outer edge of each extrusion disk (253).
4. The organic waste gas secondary membrane separation and recovery device as claimed in claim 1, wherein the two second filter membranes (24) inside each membrane sleeve (22) are fixedly connected with the membrane sleeve (22) through an elastic rubber sleeve (240).
5. The organic waste gas secondary membrane separation and recovery device as claimed in claim 1, wherein the shaking wheel (131) is movably clamped with the mounting block (130), and a damping spring (132) is arranged at the joint.
6. The organic waste gas secondary membrane separation and recovery device as claimed in claim 1, wherein two cleaning discs (16) are slidably clamped on the rotating shaft (14), the two cleaning discs (16) are respectively located on the opposite sides of the two movable filter plates (12) and rotatably clamped with the two movable filter plates (12), cleaning scraping strips (160) are respectively arranged on the two cleaning discs (16), and the cleaning scraping strips (160) are abutted with the surfaces of the first filter membranes (15).
7. The secondary membrane separation and recovery device for organic waste gas as claimed in claim 1, wherein the first filter membrane (15) and the second filter membrane (24) both adopt hollow fiber membranes, and the pore size of the first filter membrane (15) is 25 μm, and the pore size of the second filter membrane (24) is 10 μm.
8. The organic waste gas secondary membrane separation and recovery device as claimed in claim 1, wherein the first separation cylinder (11) is provided with stabilizing rings (17) at upper and lower ends inside, and the two stabilizing rings (17) are slidably clamped with the two shaking plates (13), respectively.
9. The method for carrying out secondary membrane separation and recovery on the organic waste gas by using the device of any one of claims 1 to 8 is characterized by comprising the following steps:
s1, respectively connecting the first motor (30), the second motor (250), the supercharger (31) and the one-way electric control valve (230) with an external power supply, and controlling the second motor (250), the supercharger (31) and the one-way electric control valve (230) to be opened by using a controller;
s2, enabling the organic waste gas to enter a first separation barrel (11), respectively passing through first filter membranes (15) on two movable filter plates (12) under the action of pressure, and blocking organic pollutants on one sides opposite to the two first filter membranes (15);
s3, organic waste gas enters a second separation barrel (20) after being treated by a primary membrane module (1), and enters each air inlet ring (220) through an air homogenizing disc (23), a controller is used for controlling a second motor (250) to rotate forwards, a one-way electric control valve (230) is closed at the same time, each rotary lead screw (251) rotates clockwise, two extrusion discs (253) in each membrane sleeve (22) are made to approach each other, the organic waste gas entering the membrane sleeve (22) is extruded and filtered, and the filtered organic waste gas is discharged out of the second separation barrel (20) through an exhaust port (200) to be collected;
s4, the controller controls the second motor (250) to rotate reversely, the one-way electric control valve (230) is opened, each rotating lead screw (251) rotates anticlockwise, the two extrusion discs (253) in each membrane sleeve (22) are mutually arranged, and the organic waste gas enters the membrane sleeve (22) again for extrusion and filtration;
s5, with the reduction of the permeability of the first filter membrane (15), the two movable filter plates (12) are far away from each other along the rotating shaft (14) under the action of pressure, and finally the shaking wheel (131) on the shaking plate (13) is in contact with the arc-shaped groove (121) on the annular shaking sleeve (120), the pressure sensor transmits a signal to the controller, the controller controls the first motor (30) to rotate, the first motor (30) drives the cleaning disc (16) to rotate through the rotating shaft (14) in the rotating process, the cleaning scraping strip (160) is used for scraping off organic pollutants blocked on the surface of the first filter membrane (15), each shaking wheel (131) is in continuous contact and separation with the arc-shaped groove (121) in the rotating process of the shaking plate (13), so that the movable filter plates (12) shake up and down, the permeability of the first filter membrane (15) is recovered to be normal, and the two movable filter plates (12) are reset again under the action of the extrusion spring (140), the organic pollutants deposited on the first separating cylinder (11) are cleaned through a cleaning door (110).
10. The secondary membrane separation and recovery device for organic waste gas according to claim 1, wherein two cleaning discs (16) are slidably clamped on the rotating shaft (14), the two cleaning discs (16) are respectively positioned at two sides of the two movable filter plates (12), and cleaning scraping strips (160) are arranged on the two cleaning discs (16).
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Application publication date: 20211008 |