阅读说明：本技术 纤维膜材料催化剂自动涂覆系统及涂覆方法 (Automatic coating system and coating method for fiber membrane material catalyst ) 是由 刘雪娇 唐钰栋 张久美 赵世凯 沈鹏 柳华利 于 2021-10-25 设计创作，主要内容包括：本发明公开了纤维膜材料催化剂自动涂覆系统及涂覆方法,属于化工涂覆工艺领域,所述系统包括按照涂覆工艺顺序依次排布的控制系统、上料机构、浸渍机构、反吹机构、机械手和烘干窑。本专利通过全系统自动化控制,从物料上料到热处理完成可形成一个有效且完整的闭环,有效节约生产时间、降低生产成本、节省人力,提高生产效率。纤维膜材料装载到特定的存储架车,车表面为线性支撑,一方面可以契合纤维管形状,在浸渍及运转过程中能够有效承载纤维管,另一方面不妨碍催化剂浆料的浸渍效率,通过行吊配合工装实现物料运转,制备的催化剂溶液澄清,长时间存放不产生沉淀,浸渍池装有超声波振动棒进一步保证浆料的均一性和浸渍的高效性。(The invention discloses an automatic coating system and a coating method for a fiber membrane material catalyst, belonging to the field of chemical coating processes. This patent is through full system automation control, from the material loading to the completion of heat treatment can form an effective and complete closed loop, effectively practices thrift production time, reduction in production cost, uses manpower sparingly, improves production efficiency. The fiber membrane material is loaded to a specific storage rack vehicle, the surface of the vehicle is linearly supported, on one hand, the fiber membrane material can be matched with the shape of a fiber tube, the fiber tube can be effectively loaded in the process of impregnation and operation, on the other hand, the impregnation efficiency of the catalyst slurry is not hindered, the material operation is realized by hoisting and matching the tool, the prepared catalyst solution is clear, no precipitation is generated after long-time storage, and an ultrasonic vibration rod is arranged in an impregnation tank to further ensure the uniformity of the slurry and the high efficiency of impregnation.)

1. Automatic coating system of fiber membrane material catalyst, its characterized in that: the system comprises a control system (17), a feeding mechanism, a dipping mechanism, a back-blowing mechanism, a manipulator (14) and a drying kiln (16) which are sequentially arranged according to the sequence of the coating process, wherein:

the feeding mechanism is used for conveying the fiber membrane material in the impregnation process;

the impregnation mechanism is responsible for impregnating and laminating the fiber membrane material;

the back-blowing mechanism is responsible for back-blowing the fiber membrane material impregnated with the membrane;

the manipulator (14) is responsible for conveying the fiber membrane material subjected to back blowing to a drying kiln (16);

the drying kiln (16) is responsible for drying the fiber membrane material;

the control system (17) is responsible for controlling and operating the whole system.

2. The automatic coating system of fiber membrane material catalyst according to claim 1, characterized in that: the feeding mechanism, the dipping mechanism and the back blowing mechanism are sequentially arranged according to the same straight line;

the drying kiln (16) is arranged in parallel with the feeding mechanism, the dipping mechanism and the back blowing mechanism to form a U-shaped loop;

the manipulator (14) is a rotary manipulator.

3. The automatic coating system of fiber membrane material catalyst according to claim 1 or 2, characterized in that: the feeding mechanism comprises a travelling crane (1) and a mechanical gripper (2);

the travelling crane (1) extends from the front end of the dipping mechanism to the rear end of the back flushing mechanism and is responsible for transporting the fiber membrane materials in the dipping and back flushing processes.

4. The automatic coating system of fiber membrane material catalyst according to claim 1 or 2, characterized in that: the dipping mechanism comprises a dipping pool (6), a spiral bouncing device (7), a tray (8), an ultrasonic vibrating rod (10) and a pressure sensor;

the tray (8) generates a stress signal after receiving the fiber membrane material conveyed by the feeding mechanism;

the control system (17) sends out an instruction after receiving the stress signal to control the spiral upspring device (7) to fall down;

the spiral bouncing device (7) falls to the bottom of the dipping tank (4) and then contacts with a pressure sensor at the bottom;

the pressure sensor sends out a material in-place signal;

and after the control system (17) receives the incoming material in-place signal, the ultrasonic vibration rod (10) is controlled to start to begin dipping.

5. The automatic coating system of fiber membrane material catalyst according to claim 4, characterized in that: the dipping mechanism further comprises a liquid level detector (9), a diaphragm pump (5) and a liquid slurry storage tank (4), after the control system (17) receives an incoming material in-place signal, the liquid level detector (9) is controlled to start detection, if the test liquid level is lower than the calibrated lowest liquid level line, the diaphragm pump (5) of the liquid slurry storage tank (4) is controlled by the control system (17) to start grouting, and when the slurry is higher than the calibrated highest liquid level line, the diaphragm pump (5) stops working.

6. The automatic coating system of fiber membrane material catalyst according to claim 1 or 2, characterized in that:

the back-blowing mechanism comprises a back-blowing pool (13), a back-blowing air path (12) and an air pump (11);

wherein the back-blowing pool (13) is responsible for placing the impregnated fiber membrane material;

the back-blowing gas circuit (12) is a plurality of tubular gas outlet devices.

7. The automatic coating system of fiber membrane material catalyst according to claim 1 or 2, characterized in that:

an automatic feeding system and a microwave drying system are arranged in the drying kiln (16) to realize automatic feeding and drying of materials.

8. The automatic coating system of fiber membrane material catalyst according to claim 2, characterized in that: the drying kilns are 2 sets and are respectively positioned at two sides of the feeding mechanism, the dipping mechanism and the back blowing mechanism;

and the mechanical hands (14) respectively supply materials for 2 sets of drying kilns.

9. The automatic coating method of the fiber membrane material catalyst is characterized in that: the method comprises the following implementation steps:

A. the travelling crane (1) transports the storage rack vehicle (3) together with the loaded fiber membrane material to a tray (8) of the impregnation mechanism through the mechanical gripper (2);

B. stress signals generated after the tray (8) receives the incoming materials are transmitted to a control system (17); the control system (17) controls the spiral upspring device (7) to fall after receiving the stress signal;

C. the spiral upspring device (7) falls to the bottom of the dipping pool (6) of the dipping mechanism and then contacts with the pressure sensor at the bottom of the dipping pool (6), and the pressure sensor sends a signal that the incoming material is in place;

the control system (17) receives the signal that the incoming material is in place and starts timing;

D. after timing is finished, the spiral bouncing device (7) rises, after the spiral bouncing device reaches a set position, the control system (17) controls the right side of the tray (8) to rise, so that the fiber membrane material forms an inclination angle to control drying, and then the fiber membrane material returns;

the travelling crane (1) conveys the dry-control fiber membrane material and the storage rack trolley (3) to a back-blowing pool (13), a back-blowing mechanism is started, and back-blowing is carried out through a back-blowing air path (12);

E. after the back flushing is finished, the rotary manipulator (14) grabs and sends the fiber membrane material together with the storage rack vehicle (3) to a flat plate turnover vehicle (15) at the inlet track of the drying kiln (16);

an automatic feeding system of the drying kiln (16) starts automatic feeding, the storage rack vehicle (3) carrying the fiber membrane materials and the flat plate turnover vehicle (15) are conveyed to the drying kiln (16), drying heat treatment is carried out through a microwave drying system, and after drying is finished, the fiber membrane material storage rack vehicle (3) and the flat plate turnover vehicle (15) are pushed out, discharged and stored;

the flat plate transfer vehicle (15) is 2, wherein 1 is standby, and after the used flat plate transfer vehicle (15) enters the microwave drying system, the standby flat plate transfer vehicle (15) automatically moves to the inlet of the microwave system for the circulation operation of the whole impregnation process.

10. The method for automatically coating a fiber membrane material catalyst according to claim 9, characterized in that: in the step C of the method, after the control system (17) receives a signal that the supplied materials are in place, the liquid level detector (9) is controlled to start detection, if the test liquid level is lower than the calibrated lowest liquid level line, the control system (17) controls the diaphragm pump (5) of the slurry storage tank (4) of the dipping mechanism to start grouting, and when the slurry is higher than the calibrated highest liquid level line, the diaphragm pump (5) stops grouting.

11. The method for automatically coating a fiber membrane material catalyst according to claim 9, characterized in that: in the step D of the method, a plurality of groups of fiber membrane materials are placed in the back flushing pool, and each group of fiber membrane materials is placed on a storage rack vehicle (3); the number of the tubular air outlet devices of the back-blowing air passage (12) is the same as that of the fiber membrane materials loaded by each storage rack vehicle (3), and the back-blowing air passage (12) is used for sequentially and respectively fixing and back-blowing a plurality of groups of fiber membrane materials.

12. The method for automatically coating a fiber membrane material catalyst according to any one of claims 9 to 11, characterized in that: catalyst slurry is contained in the impregnation tank (6), and the preparation of the catalyst slurry comprises the following contents:

10 parts of titanium sulfate, 5 parts of oxalic acid, 6 parts of ammonium metatungstate, 3 parts of ammonium metavanadate, 3 parts of urea and 0.3 part of polyethylene glycol 6000 are respectively poured into 60 parts of water according to the formula and stirred.

13. The method for automatically coating a fiber membrane material catalyst according to any one of claims 9 to 11, characterized in that: the storage rack trolley (3) structurally comprises a trolley frame (3-1) and supporting legs (3-2), wherein the upper ends of the supporting legs (3-2) are bayonet sockets, the lower ends of the supporting legs (3-2) are plug-in ends, and two storage rack trolleys (3) which are adjacent up and down are plugged together through the plug-in ends of the supporting legs (3-2) and the bayonet sockets;

a plurality of cylindrical grooves are arranged on the surface of the frame (3-1) side by side along the longitudinal direction;

the cylindrical groove on the surface of the frame (3-1) is formed by linear bodies which are transversely and longitudinally spaced, and linear support is realized on the fiber membrane material.

14. The method for automatically coating a fiber membrane material catalyst according to claim 9, characterized in that: the periphery of the flat plate turnover vehicle (15) is provided with elongated bayonets for being plugged and clamped with the plugging ends of the supporting legs (3-2) of the storage rack vehicle (3), so that the materials are guaranteed to be stable and not to loosen on the turnover vehicle.

Technical Field

The invention relates to the field of chemical coating processes, in particular to an automatic coating system and a coating method for a fiber membrane material catalyst.

Background

Environmental problems always focus on the general attention of all countries in the world, and water pollution and atmospheric pollution threaten the living environment of human beings all the time. Nitrogen oxides (NO, NO)₂，N₂O) is a major source of air pollution, which can cause environmental problems such as photochemical pollution, acid rain, ozone voiding, greenhouse effect, and the like. Almost all NOx comes from transport and thermal power plants, thus controlling NO_xThe discharge in air is a problem to be solved.

The functional membrane material has multiple advantages of high-efficiency dust removal and denitration, and can solve the problems of high-temperature flue gas ultrafine dust purification, denitration catalyst abrasion, poisoning, low utilization rate and the like. The ceramic fiber composite membrane material has the characteristics of high porosity, low filtration resistance, good thermal stability, high catalyst loading area, easiness in realizing large-size and low-cost processing and the like, has obvious advantages in the aspect of dust removal and denitration integration, and is a hot spot in the development of high-temperature ceramic membrane materials at home and abroad at present.

The Selective Catalytic Reduction (SCR) technology can effectively solve NO_xThe core of the SCR denitration technology is catalytic reaction for converting harmful substances in the air into N₂And H₂And O. The fiber membrane material coated catalyst is used as a vital production process, the conversion efficiency of the catalyst can be directly influenced, so that the performances of desulfurization, denitrification and the like of products are influenced, the large-size fiber membrane material is large in size and inconvenient to carry, the large-size fiber membrane material is adhered to human skin due to material reasons and easily causes itching, the catalyst slurry is difficult to clean, and manual operation is inconvenient, so that a complete automatic catalyst coating system is urgently needed to solve the problems in the existing production.

Disclosure of Invention

At present, the coating process of the hollow fiber material catalyst is mostly operated manually, the efficiency is low, the coating uniformity is difficult to ensure, an effective production closed loop cannot be formed, and the time is wasted.

In order to solve the technical problems, the invention aims to provide an automatic coating system and a coating method for a fiber membrane material catalyst.

Automatic coating system of fiber membrane material catalyst, the system includes control system, feed mechanism, dipping machine structure, blowback mechanism, manipulator and the drying kiln that arranges in proper order according to the coating technology order, wherein:

the feeding mechanism is used for conveying the fiber membrane material in the impregnation process;

the impregnation mechanism is responsible for impregnating and laminating the fiber membrane material;

the back-blowing mechanism is responsible for back-blowing the fiber membrane material impregnated with the membrane;

the mechanical arm is responsible for conveying the fiber membrane material subjected to back flushing to a drying kiln;

the drying kiln is responsible for drying the fiber membrane material;

the control system is responsible for controlling and operating the whole system.

The feeding mechanism, the dipping mechanism and the back blowing mechanism are sequentially arranged according to the same straight line;

the drying kiln is arranged in parallel with the feeding mechanism, the dipping mechanism and the back blowing mechanism to form a U-shaped loop, so that the operation space is effectively saved;

the manipulator is a rotary manipulator, and 90-degree rotation of materials is realized.

The feeding mechanism comprises a travelling crane and a mechanical gripper;

the travelling crane extends from the front end of the dipping mechanism to the rear end of the back flushing mechanism and is responsible for transporting the fiber membrane materials in the dipping and back flushing processes.

The dipping mechanism comprises a dipping pool, a spiral bouncing device, a tray, an ultrasonic vibrating rod and a pressure sensor;

the tray generates a stress signal after receiving the fiber membrane material conveyed by the feeding mechanism;

the control system sends out an instruction after receiving the stress signal to control the spiral upspring device to fall down;

the spiral upspring device falls to the bottom of the dipping pool and then contacts with the pressure sensor at the bottom;

the pressure sensor sends out a material in-place signal;

and after the control system receives the incoming material in-place signal, the ultrasonic vibration rod is controlled to start to dip.

The dipping mechanism further comprises a liquid level detector, a diaphragm pump and a liquid slurry storage tank, the control system receives an incoming material in-place signal and then controls the liquid level detector to start detection, if the test liquid level is lower than the calibrated lowest liquid level line, the control system controls the diaphragm pump of the liquid slurry storage tank to start grouting, and when the slurry is higher than the calibrated highest liquid level line, the diaphragm pump stops working.

The back-blowing mechanism comprises a back-blowing pool, a back-blowing air path and an air pump;

the back-blowing pool is used for placing the impregnated fiber membrane material;

the back-blowing gas circuit is a plurality of tubular gas outlet devices;

when the device works, the tubular air outlet device is inserted into the fiber membrane material, and back blowing is carried out from inside to outside through the air pump.

An automatic feeding system and a microwave drying system are arranged in the drying kiln, so that automatic feeding and drying of materials are realized.

The drying kiln is a sleeve and is respectively positioned at two sides of the feeding mechanism, the dipping mechanism and the back blowing mechanism, and because the drying time is longer than the dipping time, one set of dipping system provides service for 2 sets of drying systems, so that the operating space is effectively saved, and the operating efficiency is greatly improved;

the manipulator supplies for 2 sets of drying kilns respectively.

In another aspect of the present invention, the method for automatically coating a fiber membrane material catalyst comprises the following steps:

A. the travelling crane transports the storage rack vehicle together with the loaded fiber membrane material to a tray of the impregnation mechanism through the mechanical gripper;

B. the tray receives a stress signal generated after the incoming material is transmitted to the control system; the control system controls the spiral upspring device to fall down after receiving the stress signal;

C. the spiral upspring device falls to the bottom of the dipping pool of the dipping mechanism and then contacts with a pressure sensor at the bottom of the dipping pool, and the pressure sensor sends a signal that the incoming material is in place;

the control system receives a signal that the incoming material is in place and starts timing for 10 min;

D. after timing for 10min, the spiral bouncing device rises, after the spiral bouncing device reaches a set position, the control system controls the right side of the tray to rise by 0.26m, so that the fiber membrane material forms an inclination angle of 5 degrees for drying control, and the fiber membrane material returns after staying for 1 min;

the travelling crane conveys the dried fiber membrane material together with the storage rack vehicle to a back-blowing pool, a back-blowing mechanism is started, and back-blowing is carried out through a back-blowing air channel;

E. after the back flushing is finished, the rotary manipulator grabs and conveys the fiber membrane material together with the storage rack vehicle to a flat plate turnover vehicle at the inlet track of the drying kiln;

starting automatic feeding by an automatic feeding system of the drying kiln, conveying the storage rack vehicle carrying the fiber membrane material and the flat plate turnover vehicle to the drying kiln, carrying out drying heat treatment by a microwave drying system, pushing out the storage rack vehicle carrying the fiber membrane material and the flat plate turnover vehicle after drying, and unloading and storing;

the flat plate transfer vehicle comprises 2 flat plate transfer vehicles, wherein 1 flat plate transfer vehicle is standby, and after the used flat plate transfer vehicle enters the microwave drying system, the standby flat plate transfer vehicle automatically moves to an inlet of the microwave system for cyclic operation of the whole impregnation process.

In the step C of the method, after the control system receives a signal that the supplied materials are in place, the control system controls the liquid level detector to start detection, if the test liquid level is lower than the calibrated lowest liquid level line, the control system controls the diaphragm pump of the slurry storage tank of the dipping mechanism to start grouting, and when the slurry is higher than the calibrated highest liquid level line, the diaphragm pump stops grouting.

In the step D of the method, a plurality of groups of fiber membrane materials are placed in the back flushing pool, and each group of fiber membrane materials is placed on a storage rack vehicle; the number of the tubular air outlet devices of the back-blowing air passage is the same as that of the fiber membrane materials contained in each storage rack vehicle, a plurality of groups of fiber membrane materials are fixed and back-blown respectively through the back-blowing air passage in sequence, and the back-blowing time of each group is 10-15 s.

Catalyst slurry is contained in the impregnation tank, and the preparation of the catalyst slurry comprises the following contents:

10 parts of titanium sulfate, 5 parts of oxalic acid, 6 parts of ammonium metatungstate, 3 parts of ammonium metavanadate, 3 parts of urea and 0.3 part of polyethylene glycol 6000 are respectively poured into 60 parts of water according to the formula, the mixture is stirred for 1 hour, and the prepared catalyst solution is clear and does not generate precipitates after being stored for a long time.

The storage rack vehicle structurally comprises a vehicle frame and supporting legs, wherein the upper ends of the supporting legs are bayonets, the lower ends of the supporting legs are inserting ends, and two storage rack vehicles which are adjacent up and down are inserted together through the inserting ends of the supporting legs and the bayonets;

a plurality of cylindrical grooves are arranged on the surface of the frame side by side along the longitudinal direction;

the cylindrical groove on the surface of the frame is composed of linear bodies which are transversely and longitudinally spaced, and linear support is realized on the fiber membrane material.

The periphery of the flat plate turnover vehicle is provided with extension bayonets for being plugged and clamped with the plugging ends of the supporting legs of the storage rack vehicle, so that the materials are guaranteed to be stable and not to loosen on the turnover vehicle.

Compared with the prior art, the invention has the following beneficial effects:

the invention can effectively save labor and improve production efficiency through full-system automatic control. The fiber membrane material is loaded to the linear-supported storage rack vehicle, so that the fiber membrane material can be matched with the shape of a fiber tube on one hand, the fiber tube can be effectively supported in the processes of impregnation and operation, and on the other hand, the impregnation efficiency of the catalyst slurry is not hindered; the material operation is realized through the matching of a travelling crane and a tool; the prepared catalyst solution is clear, does not generate precipitation after being stored for a long time, and the uniformity of the slurry and the high efficiency of impregnation are further ensured by arranging the ultrasonic vibration rod in the impregnation tank; the fiber membrane material has stable void ratio and size, and the same impregnation time ensures that the catalyst slurry with the same concentration has consistent loading capacity; the automatic sizing system ensures that the size is sufficient to meet the dipping requirement; the transfer of the impregnated product to the drying kiln is realized by rotating the mechanical arm, the full-automatic microwave drying kiln finishes the heat treatment of the catalyst fiber material under a consistent drying system, and the flat plate turnover vehicle is automatically pushed out after the drying is finished, and the material is unloaded and stored.

The system can form an effective and complete closed loop from material feeding to completion of heat treatment, effectively saves production time and reduces production cost.

Drawings

FIG. 1 is a schematic view of a catalyst coating system of the present invention;

FIG. 2 is a perspective view of a storage rack cart configuration;

FIG. 3 is a front view of the storage rack cart;

FIG. 4 is a left side view of the storage rack vehicle;

FIG. 5 is a top plan view of the storage rack cart;

FIG. 6 is a flow chart of the coating method of the present invention.

Detailed Description

In order to better understand the technical scheme of the invention, the invention is further explained by combining the drawings and the specific embodiments in the specification.

Example 1:

automatic coating system of fiber membrane material catalyst, the system includes control system 17, feed mechanism, flooding mechanism, blowback mechanism, manipulator 14 and the drying kiln 16 that arranges in proper order according to the coating process order, wherein:

the feeding mechanism is used for conveying the fiber membrane material in the impregnation process;

the impregnation mechanism is responsible for impregnating and laminating the fiber membrane material;

the back-blowing mechanism is responsible for back-blowing the fiber membrane material impregnated with the membrane;

the manipulator 14 is responsible for conveying the fiber membrane material subjected to back flushing to a drying kiln 16;

the drying kiln 16 is responsible for drying the fiber membrane material;

the control system 17 is responsible for controlling the operation of the entire system.

The feeding mechanism, the dipping mechanism and the back blowing mechanism are sequentially arranged according to the same straight line;

the drying kiln 16 is arranged in parallel with the feeding mechanism, the dipping mechanism and the back blowing mechanism to form a U-shaped loop, so that the operation space is effectively saved;

the manipulator 14 is a rotary manipulator, and realizes 90-degree rotation of materials.

The feeding mechanism comprises a travelling crane 1 and a mechanical gripper 2;

the travelling crane 1 extends from the front end of the dipping mechanism to the rear end of the back flushing mechanism and is responsible for transporting the fiber membrane materials in the dipping and back flushing processes.

The dipping mechanism comprises a dipping tank 6, a spiral upspring device 7, a tray 8, an ultrasonic vibrating rod 10 and a pressure sensor;

the tray 8 generates a stress signal after receiving the fiber membrane material conveyed by the feeding mechanism;

the control system 17 sends out an instruction after receiving the stress signal to control the spiral upspring device 7 to fall down;

the spiral upspring device 7 falls to the bottom of the dipping pond 4 and then contacts with a pressure sensor at the bottom;

the pressure sensor sends out a material in-place signal;

and after receiving the incoming material in-place signal, the control system 17 controls the ultrasonic vibration rod 10 to start to dip.

The dipping mechanism further comprises a liquid level detector 9, a diaphragm pump 5 and a liquid slurry storage tank 4, after the control system 17 receives a material incoming in-place signal, the liquid level detector 9 is firstly controlled to start detection, if the test liquid level is lower than the calibrated lowest liquid level line, the control system 17 controls the diaphragm pump 5 of the liquid slurry storage tank 4 to start grouting, and when the slurry is higher than the calibrated highest liquid level line, the diaphragm pump 5 stops working.

The back-blowing mechanism comprises a back-blowing pool 13, a back-blowing air path 12 and an air pump 11;

wherein the blowback tank 13 is responsible for placing the impregnated fiber membrane material;

the back-blowing gas circuit 12 is a plurality of tubular gas outlet devices;

when the device works, the tubular air outlet device is inserted into the fiber membrane material, and back blowing is carried out from inside to outside through the air pump 11. Because the fiber membrane material is tubular, the tubular air outlet device is inserted into the tubular fiber membrane material and blows air from inside to outside, and retention of slurry in the tube body is avoided.

An automatic feeding system and a microwave drying system are arranged in the drying kiln 16, so that automatic feeding and drying of materials are realized.

As shown in fig. 1, 2 drying kilns are respectively arranged at two sides of the feeding mechanism, the dipping mechanism and the back blowing mechanism, and as the drying time is longer than the dipping time, one dipping system provides service for 2 drying systems, so that the operating space is effectively saved and the operating efficiency is greatly improved;

the manipulators 14 respectively supply 2 sets of drying kilns.

Example 2

An automatic coating method of a fiber membrane material catalyst based on embodiment 1 is shown in fig. 6, and the implementation steps of the method include the following steps:

A. the travelling crane 1 transports the storage rack vehicle 3 together with the loaded fiber membrane material to a tray 8 of the impregnation mechanism through the mechanical gripper 2;

B. the tray 8 receives the stress signal generated after the incoming material is transmitted to the control system 17; the control system 17 controls the spiral upspring device 7 to fall down after receiving the stress signal;

C. the spiral upspring device 7 falls to the bottom of the dipping pool 6 of the dipping mechanism and then contacts with a pressure sensor at the bottom of the dipping pool 6, and the pressure sensor sends a signal that the incoming material is in place;

the control system 17 receives the signal that the incoming material is in place and starts timing for 10 min;

D. after timing for 10min, the spiral upspring device 7 is lifted, after the spiral upspring device reaches a set position, the control system 17 controls the right side of the tray 8 to be lifted for 0.26m, so that the fiber membrane material forms an inclination angle of 5 degrees for drying control, and the fiber membrane material returns after staying for 1 min;

the travelling crane 1 conveys the dried fiber membrane material together with the storage rack vehicle 3 to a back-blowing pool 13, a back-blowing mechanism is started, and back-blowing is carried out through a back-blowing air path 12;

E. after the back flushing is finished, the rotary manipulator 14 grabs and conveys the fiber membrane material together with the storage rack vehicle 3 to a flat plate turnover vehicle 15 at the inlet track of the drying kiln 16;

an automatic feeding system of the drying kiln 16 starts automatic feeding, the storage rack vehicle 3 loaded with the fiber membrane materials and the flat plate turnover vehicle 15 are conveyed to the drying kiln 16, drying heat treatment is carried out through a microwave drying system, and after drying is completed, the fiber membrane material storage rack vehicle 3 and the flat plate turnover vehicle 15 are pushed out, discharged and stored;

the flat plate transfer vehicle 15 is 2, wherein 1 is standby, and after the used flat plate transfer vehicle 15 enters the microwave drying system, the standby flat plate transfer vehicle 15 automatically moves to the inlet of the microwave system for the circulation operation of the whole impregnation process.

In the step C of the method, after the control system 17 receives a signal that the supplied materials are in place, the liquid level detector 9 is controlled to start detection, if the test liquid level is lower than the calibrated lowest liquid level line, the control system 17 controls the diaphragm pump 5 of the slurry storage tank 4 of the dipping mechanism to start grouting, and when the slurry is higher than the calibrated highest liquid level line, the diaphragm pump 5 stops grouting.

In the step D of the method, 4 groups of fiber membrane materials are placed in the back flushing pool, and each group of fiber membrane materials is placed on a storage rack vehicle; the back-blowing air path is 5 tubular air-out devices, 5 fiber membrane materials are contained in each storage rack vehicle 3, 4 groups of fiber membrane materials are fixed and back-blown respectively in sequence through the back-blowing air path 12, and the back-blowing time of each group is 10-15 s.

Catalyst slurry is contained in the impregnation tank 6, and the preparation of the catalyst slurry comprises the following contents:

10 parts of titanium sulfate, 5 parts of oxalic acid, 6 parts of ammonium metatungstate, 3 parts of ammonium metavanadate, 3 parts of urea and 0.3 part of polyethylene glycol 6000 are respectively poured into 60 parts of water according to the formula, the mixture is stirred for 1 hour, and the prepared catalyst solution is clear and does not generate precipitates after being stored for a long time.

As shown in fig. 2-4, the storage rack vehicle 3 structurally comprises a vehicle frame 3-1 and a support leg 3-2, wherein the upper end of the support leg 3-2 is a bayonet, the lower end of the support leg 3-2 is a plug-in end, and two storage rack vehicles 3 which are adjacent up and down are plugged together through the plug-in end and the bayonet of the support leg 3-2;

a plurality of cylindrical grooves are arranged on the surface of the frame 3-1 side by side along the longitudinal direction;

as shown in fig. 5, the cylindrical grooves on the surface of the frame 3-1 are formed by the linear bodies which are transversely and longitudinally spaced, so that the fiber membrane material is linearly supported, and the fiber membrane material is supported by the linear bodies which are transversely and longitudinally spaced in a net form, thereby avoiding the reduction of the contact area between the fiber membrane material and the catalyst slurry caused by shielding, and improving the impregnation effect.

The periphery of the flat plate turnover vehicle 15 is provided with elongated bayonets for being plugged and clamped with the plugging ends of the supporting legs 3-2 of the storage rack vehicle 3, so that the materials are guaranteed to be stable and not to loosen on the turnover vehicle.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.