Membrane reaction separation kettle

Abstract

The utility model relates to the technical field of chemical reaction separation equipment, and provides a membrane reaction separation kettle which comprises a kettle body, and a plurality of membrane stack components, a stirrer, a gas distributor and a liquid distributor are arranged in the kettle body; the kettle body is provided with a discharge port, a backflushing port, a clear liquid outlet, a catalyst inlet and a liquid inlet; and the membrane stack assembly is uniformly distributed along the inner wall of the kettle body and consists of a plurality of membrane tubes, and two ends of each membrane tube are connected with the clear liquid branch tube and the clear liquid collecting tube. The cleaning brushes are arranged on the outer walls of the membrane pipes in a sleeving manner, and all the cleaning brushes are connected together through cleaning brush supporting rods, extend out of the kettle body through connecting rods and are connected with a driving motor to drive the cleaning brushes to reciprocate up and down along the membrane pipes so as to quickly remove filter cake layers on the surfaces of the membrane pipes. And the back-flushing system is provided with a back-flushing tank, a back-flushing pipeline and a back-flushing pump. According to the technical scheme, the problems that in the prior art, the membrane flux stability and flux recovery are obviously insufficient, and efficient chemical production is restricted are solved.

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction separation equipment technology, specifically to a membrane reaction separation vessel. Background Technology

[0002] In reactions involving two phases (solid-liquid) or three phases (gas-liquid-solid), membrane reactors, especially metal membrane reactors, are frequently used. In these reactors, the metal membrane is positioned inside the vessel. When the desired reaction conversion rate is achieved, under pressure within the reactor, the reaction liquid is separated through the metal membrane. The reaction product, i.e., the supernatant, is separated out of the reactor, while solid particles (usually catalysts) are retained inside the reactor by the metal membrane and continue to participate in the reaction. As the reaction continues, solid particles gradually accumulate on the surface of the metal membrane, forming a filter cake layer that continuously thickens, leading to a gradual decrease in membrane flux.

[0003] To address the issue of reduced membrane flux, existing methods typically involve backwashing the metal membrane with the filtered liquid. While backwashing does restore some flux, this recovery is short-lived and unstable, requiring frequent, periodic backwashing, resulting in fluctuating membrane flux. Furthermore, using filtered liquid for backwashing necessitates further filtration of the backwash liquid, and repeated backwashing reduces production capacity. Over time, the membrane surface becomes deeply fouled due to the persistent filter cake layer, ultimately significantly impacting membrane flux even after multiple backwashes, shortening membrane lifespan, and increasing equipment maintenance and replacement costs.

[0004] In summary, existing membrane reactors, especially metal membrane reactors, have significant shortcomings in terms of membrane flux stability and flux recovery, which restricts the efficient operation of chemical production.

[0005] To solve the above problems, this invention develops a membrane reaction separation vessel. Utility Model Content

[0006] This invention proposes a membrane reaction separation vessel, which solves the problem that the related technologies have significant deficiencies in membrane flux stability and flux recovery, thus restricting the efficient operation of chemical production.

[0007] The technical solution of this utility model is as follows: a membrane reaction separation vessel, comprising:

[0008] The vessel body has several membrane stack components evenly arranged in a ring along the inner wall of the vessel body, a stirrer arranged radially in the middle, a gas distributor arranged at the bottom, and a liquid distributor arranged at the top; the vessel body has a discharge port at the bottom, a backflushing port and a clear liquid outlet on the side, and a catalyst inlet and a liquid inlet at the top.

[0009] The membrane stack assembly comprises several evenly distributed membrane tubes. A clear liquid branch pipe is installed inside the reactor body. The permeate side of each membrane tube is connected to the clear liquid branch pipe. All clear liquid branch pipes of a single membrane stack assembly are mixed together. Two sets of clear liquid branch pipes and clear liquid collection pipes are provided, located at opposite ends of the membrane stack assembly. The upper set is used for collecting clear liquid during filtration, and the lower set is used for adding clear liquid during backwashing. The upper clear liquid collection pipe extends out of the reactor body and connects to the clear liquid outlet. Each membrane stack assembly corresponds to one clear liquid outlet, and all clear liquid outlets are connected together to form a clear liquid pipeline. The lower clear liquid collection pipe extends out of the reactor body and connects to the backwash port. Each membrane stack assembly corresponds to one backwash port, and all backwash ports are connected together to form a backwash pipeline.

[0010] The cleaning brush group consists of the same number of individual cleaning brushes as the membrane tubes. Each cleaning brush is sleeved on the outer wall of each membrane tube. The cleaning brushes on each membrane tube in the membrane stack assembly are connected together by cleaning brush support rods to form a cleaning brush group. One end of the cleaning brush group is provided with a connecting rod that extends out of the vessel body. The end extending out of the vessel body is provided with a driving mechanism. The driving mechanism is used to cooperate with the connecting rod to drive all the cleaning brushes in the cleaning brush group to move up and down reciprocally on the surface of the membrane tubes to continuously scrape off the filter cake layer on the surface of the membrane tubes.

[0011] The backflushing system is used to flush away deep contaminants from the permeate side within the membrane tube support.

[0012] Preferably, the vessel body is provided with a jacket, and the jacket is provided with a heat exchange medium inlet and a heat exchange medium outlet.

[0013] Preferably, the membrane tube in the membrane stack assembly is an inorganic membrane, which may be a ceramic membrane, a metal membrane, or an inorganic membrane made of other materials, with a metal membrane being preferred.

[0014] Preferably, the cleaning brush includes a support ring and bristles, the bristles being fixedly connected to the inner side of the support ring, and the support ring being sleeved on the outer wall of the membrane tube.

[0015] Preferably, the connecting rod has a guide hole in the part of the vessel body. Each membrane stack assembly is equipped with a guide rod. The guide rod is arranged vertically and parallel to the membrane stack assembly. The guide rod is fixed to the vessel body by a support member connected to the inner wall of the vessel body, and the guide rod passes through the guide hole.

[0016] Preferably, the stirrer includes:

[0017] A stirring shaft is vertically rotatably connected to the middle of the vessel body. A lifting roller is fixedly connected to the bottom end of the stirring shaft. A positioning plate is fixedly connected to the bottom end of the outer side of the stirring shaft. Positioning shafts are fixedly connected to both ends of the positioning plate. Stirring blades are rotatably connected to both positioning shafts.

[0018] Two linkage rods are rotatably connected to the middle of two stirring blades. A limiting cavity is opened in the middle of the stirring shaft. A pusher seat is vertically slidably connected inside the limiting cavity, and the ends of the two linkage rods away from the stirring blades rotate the two ends of the pusher seat respectively.

[0019] A support base is fixedly connected to the top of the vessel body. A drive motor and a hydraulic rod are fixedly connected to the top of the support base. A transmission spur gear is fixedly connected to the output end of the drive motor. A reduction spur gear is fixedly connected to the top of the outer side of the stirring shaft, and the reduction spur gear meshes with the transmission spur gear. An extension rod is rotatably connected to the middle of the top of the pusher seat, and the output end of the hydraulic rod is fixedly connected to the top of the extension rod.

[0020] Preferably, a lifting plate is fixedly connected to the outer side of the lifting roller, and the lifting plate has a spiral structure.

[0021] Preferably, the recoil system includes:

[0022] A backflushing tank is provided with a backflushing pipeline at its bottom end, and a solenoid valve is provided on the backflushing pipeline; the top inlet of the backflushing tank is connected to a clear liquid pipeline, and a valve is provided on the clear liquid pipeline.

[0023] A backflushing pump is installed on the backflushing pipeline. Its input end is connected to the bottom outlet of the backflushing tank via the backflushing pipeline, and its output end is connected to all backflushing ports on the vessel body via the backflushing pipeline.

[0024] Preferably, both the gas distributor and the liquid distributor have downward-facing openings.

[0025] The working principle and beneficial effects of this utility model are as follows:

[0026] 1. This utility model avoids production capacity fluctuations caused by fluctuations in membrane flux through overall structural coordination. At the same time, it significantly reduces the backwashing frequency and reduces the repeated filtration of the clarified liquid. The time and resources originally spent on backwashing and repeated filtration of the clarified liquid are saved, effectively increasing the output per unit time, making the reaction separation process more efficient, and significantly improving the production efficiency of enterprises.

[0027] 2. In this invention, since the membrane surface is kept in a relatively clean state, the deep contamination of the membrane tube by particulate matter is reduced, which can greatly extend the service life of the membrane tube, reduce the replacement frequency of the membrane tube, and reduce equipment maintenance costs. Attached Figure Description

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the cleaning brush assembly and connecting rod of this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the membrane stack assembly and the clear liquid collection pipe of this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of a single cleaning brush of this utility model;

[0033] Figure 5 This is a schematic diagram of the structure of the stirrer of this utility model;

[0034] Figure 6 This utility model Figure 5 A magnified view of a section at point A in the middle;

[0035] Figure 7 This is a schematic diagram of the assembly of the linkage rod of this utility model.

[0036] In the diagram: 1. Reactor body; 2. Cleaning brush assembly; 201. Cleaning brush support rod; 202. Connecting rod; 203. Guide hole; 204. Support ring; 205. Brush bristles; 206. Cleaning brush; 3. Clear liquid outlet; 31. Clear liquid collection pipe; 32. Membrane tube; 33. Clear liquid branch pipe; 4. Membrane stack assembly; 5. Backflush port; 6. Guide rod; 7. Heat exchange medium inlet; 8. Discharge port; 9. Gas distributor; 10. Gas inlet; 11. Temperature monitoring port; 12. Agitator; 1201. Agitator shaft; 1202. Lifting roller; 1203. Positioning plate ; 1204, Positioning shaft; 1205, Stirring blade; 1206, Linkage rod; 1207, Pushing seat; 1208, Support seat; 1209, Drive motor; 1210, Transmission spur gear; 1211, Reduction spur gear; 1212, Hydraulic rod; 1213, Extension rod; 13, Jacket; 14, Heat exchange medium outlet; 15, Liquid inlet; 16, Liquid distributor; 17, Pressure monitoring port; 18, Catalyst inlet; 19, Clear liquid pipeline; 20, Backflushing tank; 21, Backflushing pipeline; 22, Solenoid valve; 23, Backflushing pump. Detailed Implementation

[0037] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0038] Example 1

[0039] like Figures 1-7 As shown, this embodiment proposes a membrane reaction separation vessel, comprising:

[0040] The vessel body 1 has several membrane stack components 4 evenly arranged in a ring along the inner wall of the vessel body, a stirrer 12 arranged radially in the middle, a gas distributor 9 arranged at the bottom, and a liquid distributor 16 arranged at the top; the bottom of the vessel body 1 has a discharge port 8, the side has a backflushing port 5, a clear liquid outlet 3, and the top has a catalyst inlet 18 and a liquid inlet 15.

[0041] The membrane stack assembly 4 consists of several evenly distributed membrane tubes 32. A supernatant branch pipe 33 is installed inside the vessel body 1. The permeate side of each membrane tube 32 is connected to the supernatant branch pipe 33. All supernatant branch pipes 33 of a single membrane stack assembly 4 are mixed together to form a supernatant collecting pipe 31. Two sets of supernatant branch pipes 33 and supernatant collecting pipes 31 are provided, located at opposite ends of the membrane stack assembly 4. The upper set of the membrane stack assembly 4 is used for supernatant collection during filtration. The lower set of the membrane stack assembly 4... A set of tubes in the upper part is used for adding supernatant during backflushing of membrane stack assembly 4; the supernatant collection pipe 31 in the upper part extends out of the vessel body 1 and is connected to supernatant outlet 3; each membrane stack assembly 4 corresponds to one supernatant outlet 3, and all supernatant outlets 3 are connected together to form supernatant pipeline 19; the supernatant collection pipe 31 in the lower part extends out of the vessel body 1 and is connected to backflushing port 5; each membrane stack assembly 4 corresponds to one backflushing port 5, and all backflushing ports 5 are connected together to form backflushing pipeline 21;

[0042] Cleaning brush assembly 2, which consists of the same number of individual cleaning brushes 206 as the membrane tube 32, each

[0043] A cleaning brush 206 is fitted on the outer wall of each membrane tube 32. The cleaning brushes 206 on each membrane tube 32 in the membrane stack assembly 4 are connected together by a cleaning brush support rod 201. One end of the cleaning brush group 2 is provided with a connecting rod 202, which extends out of the vessel body 1. The end extending out of the vessel body 1 is provided with a driving mechanism. The driving mechanism is used to cooperate with the connecting rod 202 to drive all the cleaning brushes 2 in the cleaning brush group 2 to move up and down on the surface of the membrane tube 32, and continuously scrape off the filter cake layer on the surface of the membrane tube 32.

[0044] The backflushing system is used to flush away deep contamination within the membrane tube 32 support from the permeate side;

[0045] In this embodiment, the vessel body 1 is provided with a jacket 13, and the jacket 13 is provided with a heat exchange medium inlet 7 and a heat exchange medium outlet 14.

[0046] In this embodiment, the membrane tube 32 in the membrane stack assembly 4 is a metal membrane tube. In other embodiments, the membrane tube 32 can also be a tube made of other materials that can achieve cross-flow filtration. Preferably, it is a metal membrane tube, and more preferably, it is a metal membrane mirror tube.

[0047] In this embodiment, the clear liquid used for backflushing is the clear liquid filtered by membrane tube 32;

[0048] In this embodiment, the cleaning brush 206 includes a support ring 204 and bristles 205. The bristles 205 are fixedly connected to the inner side of the support ring 204. The support ring 204 is sleeved on the outer wall of the membrane tube 32. The support ring 204 is made of stainless steel. The bristles 205 can be made of nylon filaments, 304 stainless steel filaments, 316 stainless steel filaments, polypropylene filaments, or PTFE filaments, preferably nylon filaments, polypropylene filaments, or PTFE filaments.

[0049] In this embodiment, the connecting rod 202 has a guide hole 203 inside the vessel body 1. Each membrane stack assembly 4 is equipped with a guide rod 6. The guide rod 6 is arranged vertically parallel to the membrane stack assembly 4. The guide rod 6 is fixed inside the vessel body 1 by a support member connected to the inner wall of the vessel body 1. The guide rod 6 passes through the guide hole 203. When the connecting rod 202 drives all the brushes 206 of the brush assembly 2 to move up and down on the surface of the membrane tube 32, the guide hole 6 on it moves up and down along the guide rod 6 parallel to the membrane tube 32, ensuring the stability and accuracy of the operation of the brush assembly 2.

[0050] In this embodiment, the membrane stack assembly 4 is further reinforced with rigid supports to ensure that the membrane stack assembly 4 is fixed in place within the vessel body 1.

[0051] Preferably, according to process requirements, multiple temperature monitoring ports 11 can be set at different parts of the vessel body 1, and temperature transmitters or temperature sensors are installed on the temperature monitoring ports 11.

[0052] Preferably, according to process requirements, a pressure monitoring port 17 can be provided at the top of the vessel body 1, and a pressure transmitter can be installed on the pressure monitoring port 17;

[0053] In this embodiment, the recoil system includes:

[0054] A backflushing tank 20 is provided with a backflushing pipeline 21 at its bottom end, and a solenoid valve 22 is provided on the backflushing pipeline 21; the top inlet of the backflushing tank 20 is connected to a clear liquid pipeline 19, and a valve is provided on the clear liquid pipeline 19.

[0055] Backflush pump 23 is installed on backflush pipeline 21. The input end is connected to the bottom outlet of the backflush tank through backflush pipeline 21, and the output end is connected to all backflush ports 5 on the vessel body 1 through backflush pipeline 21.

[0056] Furthermore, for endothermic reactions, the heat exchange medium is a heat source, and for exothermic reactions, the heat exchange medium is a cold source.

[0057] In this embodiment, both the gas distributor 9 and the liquid distributor 16 have downward openings. Through the opening of the gas distributor 9, the gas introduced can be turned upward from the bottom, which accelerates the efficient mixing of gas with liquid and solid, speeds up the reaction, and improves the reaction conversion rate. Through the opening of the liquid distributor 16, the added liquid raw materials can be evenly distributed inside the reactor body 1.

[0058] Example 2

[0059] like Figures 1-7 As shown, based on the same concept as in Embodiment 1 above, this embodiment also proposes a stirrer 12;

[0060] The mixer 12 includes:

[0061] A stirring shaft 1201 is vertically rotatably connected to the middle of the vessel body 1. A lifting roller 1202 is fixedly connected to the bottom end of the stirring shaft 1201. A positioning plate 1203 is fixedly connected to the bottom end of the outer side of the stirring shaft 1201. Positioning shafts 1204 are fixedly connected to both ends of the positioning plate 1203. Stirring blades 1205 are rotatably connected to both positioning shafts 1204.

[0062] Two linkage rods 1206 are rotatably connected to the middle of two stirring blades 1205. A limiting cavity is opened in the middle of the stirring shaft 1201. A push seat 1207 is vertically slidably connected inside the limiting cavity. The ends of the two linkage rods 1206 away from the stirring blades 1205 rotate the two ends of the push seat 1207 respectively.

[0063] A support base 1208 is fixedly connected to the top of the vessel body 1. A drive motor 1209 and a hydraulic rod 1212 are fixedly connected to the top of the support base 1208. A transmission spur gear 1210 is fixedly connected to the output end of the drive motor 1209. A reduction spur gear 1211 is fixedly connected to the top of the outer side of the stirring shaft 1201, and the reduction spur gear 1211 meshes with the transmission spur gear 1210. An extension rod 1213 is rotatably connected to the middle of the top of the pusher seat 1207, and the output end of the hydraulic rod 1212 is fixedly connected to the top of the extension rod 1213.

[0064] In this embodiment, a lifting plate is fixedly connected to the outer side of the lifting roller 1202, and the lifting plate has a spiral structure;

[0065] One specific application of the above two embodiments is to add a catalyst from the catalyst inlet 18, add gaseous ammonia from the gas inlet 10 of the gas distributor 9, add cyclohexanone, hydrogen peroxide, tert-butanol from the liquid inlet 15 of the liquid distributor 16, or add several raw materials from other parts in other ways, or add raw materials from an external tubular reactor.

[0066] During the reaction process, the drive motor 1209 is started, causing the transmission spur gear 1210 to shift the reduction spur gear 1211, which in turn drives the stirring shaft 1201 to rotate. With the connection between the stirring shaft 1201 and the lifting roller 1202, the lifting roller 1202 can lift the material in the vessel 1 upwards, and work with the stirring blade 1205 to stir the material in the vessel 1. The hydraulic rod 1212 can be started to push the push seat 1207 with the help of the extension rod 1213. Since the linkage rod 1206 is connected between the push seat 1207 and the stirring blade 1205, when the push seat 1207 is displaced, the linkage rod 1206 can push the stirring blade 1205 to rotate under the support of the positioning shaft 1204, thereby changing the working position of the stirring blade 1205, reducing the overall working blind area, allowing the material to fully react in the vessel 1 and complete the interception of the catalyst.

[0067] The reaction product, cyclohexanone oxime, is separated by the membrane stack assembly 4 and discharged from the supernatant line 19. A small portion is sent to the backflushing tank 20, and the majority is sent to subsequent processes. Under the pressure inside the reactor 1, the membrane stack assembly 4 retains the catalyst and simultaneously forms a filter cake layer on the surface of the membrane tube 32. The cleaning brush assembly 2 continuously moves up and down on the surface of the membrane tube 32 to remove the filter cake layer, keeping the surface of the membrane tube 32 continuously clean and ensuring a continuous high flux. If the membrane flux decreases slightly, the backflushing system is activated. The supernatant in the backflushing tank 20 passes through the solenoid valve 22, backflushing pump 23, and backflushing port 5 to the permeate side of the membrane tube 32, where it is backflushed to remove deep contaminants from the support body of the membrane tube 32. The backflushing system and the cleaning brush assembly are independent systems and do not affect each other.

[0068] In summary, by utilizing the coupled design of the brush assembly 2 and the backflushing system, the membrane tube 32 in the membrane stack assembly 4 can be kept in a high-flux state, which can improve the stability of the separation process, increase the unit capacity per unit time, and extend the service life of the membrane tube 32.

[0069] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A membrane reaction separation vessel, characterized in that, include: The vessel body (1) is provided with several membrane stack components (4) evenly arranged in a ring along the inner wall of the vessel body, a stirrer (12) is provided in the middle radial direction, a gas distributor (9) is provided at the bottom, and a liquid distributor (16) is provided at the top; the vessel body (1) is provided with a discharge port (8) at the bottom, a backflushing port (5) and a clear liquid outlet (3) on the side, and a catalyst inlet (18) and a liquid inlet (15) at the top. The membrane stack assembly (4) consists of several uniformly distributed membrane tubes (32). A clear liquid branch pipe (33) is installed inside the vessel body (1). The permeate side of each membrane tube (32) is connected to the clear liquid branch pipe (33). All the clear liquid branch pipes (33) of a single membrane stack assembly (4) are mixed together to form a clear liquid collection pipe (31). There are two sets of clear liquid branch pipes (33) and clear liquid collection pipes (31), located at both ends of the membrane stack assembly (4). The upper set of the membrane stack assembly (4) is used for collecting the clear liquid during filtration. The lower set is used for adding supernatant during backflushing of the membrane stack assembly (4); the upper supernatant collection pipe (31) extends out of the vessel body (1) and connects to the supernatant outlet (3); each membrane stack assembly (4) corresponds to a supernatant outlet (3), and all the supernatant outlets (3) are connected together to form a supernatant pipeline (19); the lower supernatant collection pipe (31) extends out of the vessel body (1) and connects to the backflushing port (5); each membrane stack assembly (4) corresponds to a backflushing port (5), and all the backflushing ports (5) are connected together to form a backflushing pipeline (21); The cleaning brush assembly (2) consists of the same number of individual cleaning brushes (206) as the membrane tube (32), each... A cleaning brush (206) is fitted on the outer wall of each membrane tube (32). The cleaning brushes (206) on each membrane tube (32) in the membrane stack assembly (4) are connected together by a cleaning brush support rod (201) to form the cleaning brush group (2). One end of the cleaning brush group (2) is provided with a connecting rod (202) and the connecting rod (202) extends out of the vessel body (1). The end extending out of the vessel body (1) is provided with a driving mechanism. The driving mechanism is used to cooperate with the connecting rod (202) to drive all the cleaning brushes (2) in the cleaning brush group (2) to move up and down on the surface of the membrane tube (32) to continuously scrape off the filter cake layer on the surface of the membrane tube (32). A backflushing system is used to flush away deep contamination within the membrane tube (32) support from the permeate side.

2. The membrane reaction separation vessel according to claim 1, characterized in that, The vessel body (1) is provided with a jacket (13) on the outside, and the jacket (13) is provided with a heat exchange medium inlet (7) and a heat exchange medium outlet (14).

3. The membrane reaction separation vessel according to claim 1, characterized in that, The membrane tube (32) in the membrane stack assembly (4) is an inorganic membrane.

4. The membrane reaction separation vessel according to claim 1, characterized in that, The cleaning brush (206) includes a support ring (204) and bristles (205). The bristles (205) are fixedly connected to the inner side of the support ring (204), and the support ring (204) is sleeved on the outer wall of the membrane tube (32).

5. A membrane reaction separation vessel according to claim 1, characterized in that, The connecting rod (202) has a guide hole (203) inside the vessel body (1). Each membrane stack assembly (4) is equipped with a guide rod (6). The guide rod (6) is arranged vertically parallel to the membrane stack assembly (4). The guide rod (6) is fixed inside the vessel body (1) by a support member connected to the inner wall of the vessel body (1), and the guide rod (6) passes through the guide hole (203).

6. The membrane reaction separation vessel according to claim 1, characterized in that, The stirrer (12) includes: A stirring shaft (1201) is vertically rotatably connected to the middle part of the vessel body (1). A lifting roller (1202) is fixedly connected to the bottom end of the stirring shaft (1201). A positioning plate (1203) is fixedly connected to the bottom end of the outer side of the stirring shaft (1201). A positioning shaft (1204) is fixedly connected to both ends of the positioning plate (1203). A stirring fan blade (1205) is rotatably connected to both positioning shafts (1204). Two linkage rods (1206) are rotatably connected to the middle of two stirring blades (1205). A limiting cavity is opened in the middle of the stirring shaft (1201). A pusher seat (1207) is vertically slidably connected inside the limiting cavity. The ends of the two linkage rods (1206) away from the stirring blades (1205) rotate the two ends of the pusher seat (1207) respectively. A support base (1208) is fixedly connected to the top of the vessel body (1). A drive motor (1209) and a hydraulic rod (1212) are fixedly connected to the top of the support base (1208). A transmission spur gear (1210) is fixedly connected to the output end of the drive motor (1209). A reduction spur gear (1211) is fixedly connected to the top of the outer side of the stirring shaft (1201), and the reduction spur gear (1211) meshes with the transmission spur gear (1210). An extension rod (1213) is rotatably connected to the middle of the top of the pusher seat (1207), and the output end of the hydraulic rod (1212) is fixedly connected to the top of the extension rod (1213).

7. A membrane reaction separation vessel according to claim 6, characterized in that, The lifting roller (1202) is fixedly connected to a lifting plate on its outer side, and the lifting plate has a spiral structure.

8. The membrane reaction separation vessel according to claim 1, characterized in that, The recoil system includes: A backflushing tank (20) is provided with a backflushing pipeline (21) at its bottom end, and a solenoid valve (22) is provided on the backflushing pipeline (21); the top inlet of the backflushing tank (20) is connected to a clear liquid pipeline (19), and a valve is provided on the clear liquid pipeline (19); The backflush pump (23) is installed on the backflush pipeline (21). Its input end is connected to the bottom outlet of the backflush tank through the backflush pipeline (21), and its output end is connected to all the backflush ports (5) on the vessel body (1) through the backflush pipeline (21).

9. A membrane reaction separation vessel according to claim 1, characterized in that, Both the gas distributor (9) and the liquid distributor (16) have downward openings.

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