Batch catalyst washing equipment

Abstract

The present invention provides a batch catalyst washing device, including a filter chamber and a sealing cover arranged on the top of the filter chamber, the filter chamber is connected to a solvent storage tank through a pipeline, a filter device acting on a catalyst solution and an air charging mechanism to prevent the filter device from being blocked are arranged in the filter chamber, the air inlet position of the air charging mechanism is placed below the filter device, a suction bottle for collecting waste in the catalyst solution is arranged outside the filter chamber, and the suction bottle is sealed and connected to a suction vacuum pump. The present invention mainly forms an airflow layer above a gas bubbling filter element by adding an air charging mechanism while filtering, so as to avoid catalyst particles sinking to the filter element and blocking the filter element aperture during filtering; at the same time, a lifting filter cartridge is designed, so that after the catalyst solution is filtered inside to form a filter cake, the lifting filter cartridge rises to facilitate the removal of the filter cake. The present invention can realize continuous washing of batch catalysts, and avoid the phenomenon of filter element blockage and incomplete washing during washing.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cell catalyst equipment, and in particular to a batch catalyst washing device. Background Art

[0002] Traditional petrochemical energy is facing depletion and environmental pollution problems, and the development of new energy has become increasingly urgent. As an energy conversion device, proton exchange membrane fuel cells can directly convert chemical energy in fuels such as hydrogen and methanol into electrical energy. They have the characteristics of high energy density, high efficiency, and environmental friendliness. They are ideal power sources for electric vehicles and are also regarded as potential power sources in the future for portable power supplies and fixed power stations. They have always been a hot spot for research and development.

[0003] In fuel cells, electrocatalysts act as factories for electrochemical reactions and are the core materials in batteries. The development of electrocatalysts is also one of the key technologies for fuel cells. At present, a large number of researchers in my country have conducted research and development on the scale-up production process of electrocatalysts, but the prepared electrocatalysts are still somewhat unsatisfactory in terms of performance and durability. Of course, there are many factors that affect the performance of electrocatalysts, such as the selection of raw materials and the preparation process, especially in the post-processing process of batch preparation of catalysts.

[0004] In the traditional electrocatalyst washing process, centrifugation, filtration and other methods are often used. These methods are evolved from the laboratory and have many limitations in the batch processing process, such as low washing efficiency. The centrifugal washing method often requires multiple centrifugation and washing, and it still cannot be completely cleaned; filtration washing can be continuously cleaned, but it is only suitable for washing small batches of samples in the laboratory. This is because if the washing amount is too much, the filter cake formed will hinder the washing effect of the lower catalyst; in addition, the above two washing methods are often in a static process, which can easily cause the pores of the filter element of the filter device to be blocked and the washing to be incomplete. On the one hand, it seriously affects the washing efficiency of the catalyst. On the other hand, the residual impurity ions seriously affect the electrochemical properties and service life of the catalyst.

[0005] Therefore, in the washing stage of batch preparation of catalysts, cleaning of the catalyst is a very critical link. It is necessary to provide a washing device to solve the above problems. Summary of the invention

[0006] Based on the above-mentioned technical problems affecting the washing effect in the batch processing of the existing electrocatalyst washing process, a batch catalyst washing device is provided. The present invention mainly forms an airflow layer above the filter element by adding an inflation mechanism while suction filtering, so as to avoid the catalyst particles from sinking to the filter element and blocking the filter element pore size during filtration; at the same time, an external solvent storage tank can continuously replenish deionized water on the periphery to achieve continuous washing; in addition, a lifting filter cartridge is designed, so that after the catalyst solution is filtered inside to form a filter cake, the lifting filter cartridge rises to facilitate the removal of the filter cake. The present invention can achieve continuous washing of batch catalysts and avoid the phenomenon of filter element blockage and incomplete washing during the washing process.

[0007] The technical means adopted by the present invention are as follows:

[0008] A batch catalyst washing device comprises a filter chamber and a sealing cover arranged on the top of the filter chamber, wherein the filter chamber is connected to a solvent storage tank through a pipeline, the filter chamber is provided with a filter device for acting on a catalyst solution, and an inflation mechanism for preventing the filter device from being blocked, the air inlet position of the inflation mechanism is placed below the filter device, and a suction bottle for collecting waste materials in the catalyst solution is provided outside the filter chamber, and the suction bottle is sealed and connected to a suction vacuum pump.

[0009] Furthermore, the filtering device includes a filter element sealed and arranged near the bottom of the filtering chamber, a plurality of vacuum filtration columns are arranged on the filter element, an end of the vacuum filtration column away from the filter element is sealed and penetrates a filtration bottle, and a plurality of first filtration micropores are arranged in the vacuum filtration column, which penetrate the filter element and communicate with the filtration bottle.

[0010] Furthermore, the inflation mechanism comprises an air compressor, an air inlet pipe of the air compressor passes through the outer shell of the filter chamber to the inside thereof and is arranged below the filter element, and the filter element is evenly distributed with first ventilation holes.

[0011] Furthermore, the solvent storage tank is connected to the interior of the filter chamber through a liquid conduit, one end of the liquid conduit passes through the upper end position of the sealing cover close to the interior of the filter chamber, and the other end passes through the lower end position of the sealing cover close to the interior of the filter chamber and is located below the filter element, and a circulating working pump is provided on the liquid conduit.

[0012] Furthermore, a lifting filter cartridge is provided in the filter chamber, and a rotating sealing gasket driven by a driving mechanism is connected to the filter chamber directly below the lifting filter cartridge. A second suction filtration micropore and a second ventilation hole are provided on the bottom of the lifting filter cartridge and the rotating sealing gasket, and the second suction filtration micropore and the second ventilation hole have the same aperture as the first suction filtration micropore and the first ventilation hole, respectively.

[0013] When the catalyst solution is filtered in the device, the rotary sealing pad is in full contact with the upper surface of the filter element, and the second suction filtration micropore and the second ventilation hole are respectively arranged concentrically with the first suction filtration micropore and the first ventilation hole;

[0014] After the catalyst solution completes the filtering process in the equipment, the rotary sealing gasket rises and rotates under the action of the driving mechanism and the connecting mechanism. When the rotary sealing gasket collides with the bottom of the lifting filter cartridge, the second suction filtration micropores and the second ventilation holes of the rotary sealing gasket are staggered with the second suction filtration micropores and the second ventilation holes on the bottom of the lifting filter cartridge, thereby achieving complete closure of the bottom of the lifting filter cartridge.

[0015] Furthermore, the rotary sealing gasket is lifted and lowered by a driving mechanism and a connecting mechanism, wherein the driving mechanism includes a driving cylinder, and the connecting mechanism includes a cam rotatably arranged on the rotary sealing gasket, and an arc-shaped track groove for the cam to be embedded is provided on the inner wall of the filter chamber.

[0016] Furthermore, the lifting filter cartridge and the rotating sealing gasket can be taken out from the filter chamber; the rotating sealing gasket is made of sealing rubber gasket material.

[0017] Furthermore, the outer layer of the filter chamber is wrapped with an electric heating sleeve.

[0018] Furthermore, the first ventilation hole has a diameter of 0.5-1 mm.

[0019] Furthermore, the filter chamber and the vacuum filtration column are both made of transparent tempered glass, the filter element is made of ceramic material, and the liquid guide tube is a stainless steel hose.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The washing equipment of the present invention is different from the simple centrifugal and suction filtration washing methods used in existing laboratories. On the one hand, the suction filtration method is adopted while ensuring the continuous addition of deionized water to achieve continuous washing for the washing and filtration of large quantities of catalysts. On the other hand, an air charging mechanism is arranged on this basis. Gas is introduced into the filter chamber through components such as an air compressor and a first air vent. At the same time, the gas rises through the first air vents evenly arranged on the filter element to form an air column, so that the catalyst mixed liquid poured into the filter chamber is in a bubbling state under the action of the air column, and the gas forms an air flow layer above the filter element to prevent the catalyst particles from sinking to the filter element during filtration and blocking the filter element pore size, thereby affecting the filtration efficiency. In addition, the rising gas forms a positive pressure above the mixed liquid, and the pressure application process can accelerate the filtration process and improve the filtration speed.

[0022] 2. The washing equipment of the present invention is provided with an external solvent storage tank for ionized water, that is, deionized water can be continuously added on the periphery to realize continuous washing. In addition, a circulation pump and a liquid guide tube are arranged on this basis. The upper and lower ends of the liquid guide tube are connected to the interior of the filter chamber. Liquid circulation can be carried out under the action of the circulation pump. On the one hand, the solution passing through the first air vent in the filter element can be extracted and then enter the filter chamber to reduce the waste of catalyst. On the other hand, the flow of water at the bottom of the filter chamber can be realized to avoid dead water areas in the filtration process, which leads to pollution of the catalyst. Therefore, the device can ensure more complete cleaning of the catalyst.

[0023] 3. The washing device of the present invention is provided with an electric heating device, which can reduce the viscosity of the solution with high viscosity by increasing the temperature, thereby accelerating the filtration speed and washing efficiency.

[0024] 4. The suction filter element of the washing device of the present invention adopts a multi-point dispersed filter element, which makes the water flow more evenly distributed during the washing and filtering process, accelerates the filtering efficiency, and facilitates the collection of the catalyst in the later stage.

[0025] 5. The device of the present invention is also designed with a lifting filter cartridge, so that after the catalyst solution is filtered inside to form a filter cake, the lifting filter cartridge rises to facilitate the removal of the filter cake; in addition, the present invention is designed with a rotary sealing pad, so that after the filtration is completed, the rotary sealing pad rises and rotates until it contacts the bottom of the lifting filter cartridge, and the second suction filtration micropores and the second ventilation holes on the rotary sealing pad are staggered with the second suction filtration micropores and the second ventilation holes at the bottom of the cartridge, so that the bottom of the lifting filter cartridge is completely closed. At this time, under the continuous action of the driving mechanism, the lifting filter cartridge rises as a whole, and the catalyst powder forming the filter cake in the lifting filter cartridge will not leak out of the lifting filter cartridge due to its own weight and other factors, so that the filtered filter cake can be completely removed from the device to avoid waste.

[0026] In addition, the method of removing the catalyst filter cake after filtration is different from other filtration equipment that directly uses mesh filter elements. Instead, this equipment uses a lifting filter cartridge and a rotary sealing pad. The through-hole design on both corresponds to and is the same as the filtration micropores and ventilation holes on the filter element, ensuring that the airflow can smoothly pass through the rotary sealing pad and lifting filter cartridge to act on the catalyst solution during the filtration process.

[0027] 6. The lift filter cartridge and the rotary seal pad of the present invention are independently arranged, which is convenient for cleaning of both, and the lift filter cartridge can be completely removed from the device, which is convenient for further removal of the catalyst filter cake and cleaning of the inside of the lift filter cartridge.

[0028] In summary, based on the above reasons, the present invention can be widely promoted in the field of fuel cell catalyst equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 is a schematic diagram of the structure of the washing device in Example 1 of the present invention;

[0031] Figure 2 is a schematic diagram of a filtration device;

[0032] Figure 3 is a top view of the filtration device, i.e., a schematic diagram of the first suction filtration micropore and the first ventilation hole;

[0033] Figure 4 is a schematic diagram of the washing device in Example 2;

[0034] Figure 5 is a schematic diagram of a portion of the internal structure of the washing device in Example 2;

[0035] Figure 6 This is a schematic diagram of the positions of the second filtration micropores and the second ventilation holes in Example 2.

[0036] In the figure: 1. filtration chamber; 2. electric heating sleeve; 3. air compressor; 4. filtration device; 4-1. filter element; 4-2. vacuum filtration column; 4-2-1. first filtration micropore; 4-3. first vent; 5. circulating working pump; 6. solvent storage tank; 7. liquid guide tube; 7-1. switch valve; 8. filtration vacuum pump; 9. filtration bottle; 10. sealing cover; 11. inflation chamber; 12. catalyst solution; 13. filtrate; 14. lifting filter cartridge; 14-1. cartridge bottom; 15. rotary sealing pad; 16. second filtration micropore; 17. second vent; 18. driving mechanism; 20. arc track groove; 21. linear guide. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] Example 1

[0041] The present invention provides a batch catalyst washing device, such as Figure 1 As shown, it includes a filter chamber 1 made of tempered glass, a sealing cover 10 which can be manually closed and opened is provided on the top of the filter chamber 1, and an electric heating sleeve 2 is provided on the outer layer of the filter chamber 1, and the electric heating sleeve 2 can be made of conventional electric heating resistance wire; a filter device 4 is provided in the filter chamber 1, and the filter chamber 1 is divided into an upper and lower layer by the filter device 4, wherein the upper layer of the filter device 4 is a catalyst solution area, and the mixed solution area occupies about three quarters of the space, and the lower layer of the filter device 4 is an inflation chamber 11, and the volume of the inflation chamber 11 accounts for about one quarter.

[0042] like Figure 2 and 3 As shown, the filtering device 4 includes a filter element 4-1 sealed in the filtering chamber 1, a plurality of vacuum filtration columns 4-2 are vertically fixed on the bottom of the filter element 4-1, and one end of the vacuum filtration column 4-2 away from the filter element 4-1 is sealedly connected to a filtration bottle 9 arranged outside the filtering chamber 1, and a plurality of first filtration micropores 4-2-1 are provided in the vacuum filtration column 4-2, which penetrate the filter element 4-1 and communicate with the inside of the filtration bottle 9. At the same time, the filtration bottle 9 is sealedly connected with a filtration vacuum pump 8, that is, the filtration vacuum pump 8 is operated to extract the air in the filtration bottle 9 and put it in a negative pressure state. At this time, the catalyst solution located above the filtering device is sucked and pressed into the filtration bottle 9 from the first filtration micropores 4-2-1.

[0043] like Figure 2 and 3As shown, the inflation chamber 11 is connected to an external air compressor 3 through an air intake pipe sealed therewith, and at the same time, the filter element 4-1 of the filter device 4 is also penetrated by a first air vent 4-3 which is in communication with the inflation chamber 11, and the first suction micropores 4-2-1 and the first air vent 4-3 exist independently and do not affect each other, and the air compressor and the first air vent form an inflation mechanism acting in the inflation chamber, that is, the air compressor can continuously fill the inflation chamber with air, forcing the air to rise through the first air vent to the catalyst solution.

[0044] like Figure 1 As shown, further, the washing equipment also includes an external solvent storage tank 6, which is used to store deionized water. At the same time, the solvent storage tank 6 is also connected to the inside of the filter chamber 1 through the liquid guide tube 7, and the liquid guide tube 7 has two open ends, the water inlet end of which is sealed and arranged at the bottom of the filter chamber 1 and is located below the filter element 4-1, and the water outlet end of which passes through the sealing cover 10 and is connected to the inside of the filter chamber 1, that is, the water outlet end is located above the filter element 4-1 in the filter chamber 1, and at the same time, a circulating working pump 5 is provided on the liquid guide tube 7 between the water inlet end and the water outlet end, that is, the circulating working pump can control the flow direction of the liquid in the liquid guide tube, and the solution storage tank 6 is connected to the upper end part of the liquid guide tube 7 through a branch pipe to ensure that the deionized water in the solution storage tank 6 enters the space above the filter element 4-1 in the solution chamber, and at the same time, a switch valve 7-1 is provided on the branch pipe.

[0045] When in use, the catalyst solution to be filtered is poured into the filter chamber 1, the sealing cover 10 is closed, and then the washing solvent, i.e., deionized water, is added to the solvent storage tank 6, and the electric heating sleeve 2 and the air compressor 3 are turned on at the same time. The air compressor 2 causes the gas to be filled into the filter chamber 1, and rises to the top of the filter element through the first vent hole 4-3 of the filter element 4-1, forming an air flow, which contacts the catalyst solution to form a bubbling state, that is, the effect of gas bubbling makes the catalyst solution in an agitated state, thereby preventing the catalyst from clogging the first suction filtration micropore 4-2-1 and the first vent hole 4- 3. Then, turn on the filtration vacuum pump 8 to make the filtration bottle 9 in a negative pressure state, and the solvent enters the filtration bottle 9 through the first filtration micropore 4-2-1 on the filtration filter element 4-1. During the above-mentioned washing and filtration process, it is necessary to turn on the circulation working pump 5 at the same time to allow part of the catalyst solution in the inflation chamber 11 to enter the filter chamber 1 through the liquid guide tube 7, and continue to wash and filter, and then continue to filter; after the waste solvent 13 in the catalyst solution 12 is completely extracted into the filtration bottle 9, the remaining catalyst that needs to be cleaned is located above the filter element 4 in the filtration chamber 1.

[0046] Example 2

[0047] The present invention further discloses a batch catalyst washing device, based on Example 1, such as Figure 4 and5 As shown, the present invention further designs a lifting filter cartridge 14 in the filter chamber 1, a slider is fixedly provided on the cylinder wall of the lifting filter cartridge 14, and a linear guide rail 21 is provided on the inner wall of the filter chamber 1 of the washing equipment for the slider to be buckled and embedded therein to realize up and down sliding movement, and the linear guide rail 21 is communicated with the outside of the filter chamber 1, so that the lifting filter cartridge 14 can be completely removed from the filter chamber 1; at the same time, a rotary sealing pad 15 made of a sealing rubber pad material is connected to the filter chamber 1 directly below the lifting filter cartridge 14, and a second suction filtration micropore 16 and a second ventilation hole 17 are provided on the cylinder bottom 14-1 of the lifting filter cartridge 14 and the rotary sealing pad 15, as shown in FIG. Figure 6 As shown, the second suction filtration micropore 16 and the second air vent 17 have the same pore size as the first suction filtration micropore 4-2-1 and the first air vent 4-3, respectively; when the catalyst solution 12 is subjected to the filtering process in the equipment, the rotary sealing gasket 15 is in complete contact with the upper surface of the filter element 4-1, and the second suction filtration micropore 16 and the second air vent 17 are respectively arranged concentrically with the pore size of the first suction filtration micropore 4-2-1 and the first air vent 4-3, so as to ensure that the airflow can smoothly pass through the rotary sealing gasket 15 and the lifting filter cartridge to act on the catalyst solution 12 during the filtering process, and will not cause the second suction filtration micropore 16 and the second air vent 17 to be blocked.

[0048] like Figure 4 and 5 As shown, a cam (similar to a slider, not shown in the accompanying drawings) is rotatably arranged on the rotary sealing gasket 15, and an arcuate track groove 20 for the rolling movement of the cam is also arranged on the inner wall of the filter chamber 1, and the arcuate track groove 20 is also communicated with the outside so that the rotary sealing gasket 15 can be completely removed; the cam and the arcuate track groove 20 form a connecting mechanism to realize the rotary lifting movement of the rotary sealing gasket 15 in the filter chamber 1, and the rotation angle of the rotary sealing gasket 15 is determined by the arc curvature of the arcuate track groove 20; at the same time, the device is provided with a driving mechanism 18 such as a driving cylinder or a driving hydraulic cylinder, and the telescopic cylinder body seal of the driving mechanism 18 is arranged to penetrate the filter element 4-1, and when working, it rises and is connected with the rotary sealing gasket After the bottom of the lifting filter cartridge 14 comes into contact with the bottom 14-1, the driving action on the rotary sealing pad 15 is realized. When the rotary sealing pad 15 rises to come into contact with the bottom 14-1 of the lifting filter cartridge 14, the second suction filtration micropores 16 and the second ventilation holes 17 of the rotary sealing pad 15, which are rotated at a certain angle, are staggered with the second suction filtration micropores 16 and the second ventilation holes 17 on the bottom 14-1 of the lifting filter cartridge 14. At this time, the bottom 14-1 of the lifting filter cartridge 14 is completely closed. Under the continuous drive of the driving mechanism 18, the overall rise of the rotary sealing pad 15 and the lifting filter cartridge 14 is realized. After rising to the top of the equipment, the lifting filter cartridge 14 is taken out to completely take out the catalyst powder.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A batch catalyst washing device, comprising a filter chamber (1), and a sealing cover (10) arranged on the top of the filter chamber (1), characterized in that: The filter chamber (1) is connected to the solvent storage tank (6) via a pipeline. The filter chamber (1) is provided with a filter device (4) for acting on the catalyst solution and an air charging mechanism for preventing the filter device from being blocked. The air inlet position of the air charging mechanism is located below the filter device (4). The filter chamber (1) is provided with a suction bottle (9) for collecting waste materials in the catalyst solution outside. The suction bottle (9) is sealedly connected to a suction vacuum pump (8). The filtering device comprises a filter element (4-1) which is sealed and arranged near the bottom of the filtering chamber (1); a plurality of vacuum filtration columns (4-2) are arranged on the filter element (4-1); one end of the vacuum filtration column (4-2) away from the filter element (4-1) is sealed and penetrates a filtration bottle (9); and a plurality of first filtration micropores (4-2-1) are arranged in the vacuum filtration column (4-2) and penetrate the filter element (4-1) and communicate with the filtration bottle (9); The inflation mechanism comprises an air compressor (3), an air inlet pipe of the air compressor (3) passes through the outer shell of the filter chamber (1) to the interior thereof and is arranged below the filter element (4-1), and the filter element (4-1) is evenly distributed with first ventilation holes (4-3).

2. The batch catalyst washing equipment according to claim 1, characterized in that: The solvent storage tank (6) is connected to the interior of the filter chamber (1) via a liquid guide tube (7); one end of the liquid guide tube (7) passes through the sealing cover (10) near the upper end of the interior of the filter chamber (1), and the other end passes through the sealing cover (10) near the lower end of the interior of the filter chamber (1) and is located below the filter element (4-1); a circulating working pump (5) is provided on the liquid guide tube (7).

3. The batch catalyst washing equipment according to claim 1, characterized in that: A lifting filter cartridge (14) is provided in the filter chamber (1); a rotary sealing gasket (15) driven by a driving mechanism (18) is connected to the filter chamber (1) directly below the lifting filter cartridge (14); a second suction filtration micropore (16) and a second ventilation hole (17) are provided on the bottom (14-1) of the lifting filter cartridge (14) and the rotary sealing gasket (15); the second suction filtration micropore (16) and the second ventilation hole (17) have the same pore diameter as the first suction filtration micropore (4-2-1) and the first ventilation hole (4-3), respectively.

4. The batch catalyst washing equipment according to claim 3, characterized in that: The rotary sealing gasket (15) is lifted and lowered by a driving mechanism (18) and a connecting mechanism. The driving mechanism (18) comprises a driving cylinder. The connecting mechanism comprises a cam rotatably arranged on the rotary sealing gasket (15). An arc-shaped track groove (20) for the cam to be embedded is provided on the inner wall of the filter chamber (1).

5. The batch catalyst washing equipment according to claim 3, characterized in that: The lifting filter cartridge (14) and the rotating sealing gasket (15) can both be taken out from the filter chamber (1); the rotating sealing gasket (15) is made of a sealing rubber gasket material.

6. The batch catalyst washing equipment according to claim 1, characterized in that: The outer layer of the filter chamber (1) is wrapped with an electric heating sleeve (2).

7. The batch catalyst washing equipment according to claim 1, characterized in that: The first ventilation hole (4-3) has a diameter of 0.5-1 mm.

8. The batch catalyst washing equipment according to claim 2, characterized in that: The filter chamber (1) and the vacuum filtration column (4-2) are both made of transparent tempered glass, the filter element (4-1) is made of ceramic material, and the liquid guide tube (7) is a stainless steel hose.

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