A reaction kettle for fuel cell multi-element alloy catalyst

Abstract

The application relates to the technical field of mixing containers, and discloses a reaction kettle for fuel cell multi-element alloy catalysts, which comprises a kettle body, a feeding pipe and a discharging pipe are arranged on the kettle body, a stirring assembly, an air inlet assembly and a pneumatic auxiliary assembly are further arranged in the kettle body, the stirring assembly comprises a stirring shaft, spiral stirring blades fixedly installed on the stirring shaft and a crushing net for crushing fluid clusters, the spiral stirring blades are driven to rotate by the stirring shaft, the mixing of different solutions is accelerated, the crushing net can crush large fluid clusters or eddies, the stirring is more uniform and efficient, the cooperation of the air inlet assembly and the air inlet pipe facilitates the adjustment of the pressure in the kettle body, the air inlet assembly can also play an auxiliary stirring role, the airflow in the air inlet pipe can drive the spiral impeller to rotate and move downwards, the mixing of the powder additive and the solution is promoted, and the powder additive is prevented from floating on the liquid surface.

Description

Technical Field

[0001] This invention relates to the field of mixing containers, and more particularly to a reaction vessel for a multi-element alloy catalyst in a fuel cell. Background Technology

[0002] A fuel cell is an energy conversion device that converts chemical energy into electrical energy through electrochemical reactions. Since the electrochemical reactions at the electrodes are relatively slow, catalysts are needed to accelerate them. In the preparation of multi-element alloy catalysts, both the co-precipitation method and the sol-gel method require a reaction vessel as the reaction container.

[0003] Chinese invention patent CN202210482023.5 discloses a supergravity reactor and preparation method for preparing platinum-based catalysts. The supergravity principle is used to enhance the mixing of the precursor solution, improve the temperature uniformity and concentration uniformity during the reaction process, thereby improving the consistency in the mass production of catalysts.

[0004] Regarding the aforementioned technologies, the inventors believe the following shortcomings exist: First, the positions of the stirring paddle and cutting screen within the reactor are unreasonable. The stirring paddle only performs a stirring function and cannot direct the solution within the reactor towards the cutting screen, thus limiting the cutting screen's ability to break up large fluid masses. Second, during the reaction process of multi-element alloy catalysts, powdered additives or carrier powders are often required. These powders tend to float on the liquid surface, and the aforementioned equipment has not made improvements to accelerate the mixing of powder and solution. The applicant believes that the existing technology has room for improvement. The applicant proposes a reactor for multi-element alloy catalysts in fuel cells. Summary of the Invention

[0005] To address the technical problems mentioned in the background art, the present invention provides a reaction vessel for a multi-element alloy catalyst in a fuel cell.

[0006] This invention is achieved using the following technical solution: a reaction vessel for a multi-element alloy catalyst in a fuel cell, comprising a vessel body, wherein a feed pipe and a discharge pipe are provided on the vessel body, and the vessel body further comprises:

[0007] A mixing assembly, comprising a mixing shaft, spiral mixing blades fixedly mounted on the mixing shaft, and a crushing mesh for breaking up fluid masses;

[0008] An air inlet pipe is installed on the inner wall of the vessel body, and an air inlet assembly connected to the stirring shaft is provided at the upper end of the vessel body. The upper end of the air inlet pipe is connected to the air inlet assembly.

[0009] A pneumatic auxiliary component is movably installed inside the air inlet pipe. The pneumatic auxiliary component includes a spiral impeller. The airflow inside the air inlet pipe drives the spiral impeller to rotate, and the spiral impeller is located above the feed pipe.

[0010] Through the above technical solution, firstly, when the motor drives the spiral stirring blades to rotate, it can stir the materials in the vessel. Combined with the crushing screen, large fluid clumps or vortices can be broken up, making the stirring more uniform and efficient, improving the overall stirring effect. The air inlet pipe, together with the air inlet assembly, can introduce gas into the vessel, regulating the pressure inside the vessel while also assisting in stirring. Simultaneously, the airflow in the air inlet pipe can drive the spiral impeller to rotate. When the spiral impeller rotates, it can prevent powder from floating on the liquid surface, promoting the mixing of powder materials.

[0011] As a further improvement to the above solution, the stirring assembly also includes a motor. A support frame is fixedly connected to the upper end of the vessel body, and the motor is installed on the upper end of the support frame. The motor is connected to one end of the stirring shaft. Two sets of crushing mesh and spiral stirring blades are provided and installed at intervals between the upper and lower parts.

[0012] Through the above technical solution, the wire mesh can break up large fluid masses or vortices, making the mixing more uniform and efficient, and improving the overall mixing effect.

[0013] As a further improvement to the above solution, a connecting plate is fixedly connected to the top of the vessel body, the stirring shaft passes through the connecting plate, and a through hole is opened on the connecting plate, and a one-way air inlet valve is installed in the through hole.

[0014] As a further improvement to the above solution, the intake assembly further includes:

[0015] The cylinder body is mounted above the connecting plate. A plunger is movably installed inside the cylinder body. A slipper is installed on the top of the plunger. An air intake hole is opened on the side of the cylinder body, and a one-way air intake valve is installed in the hole.

[0016] A swash plate, which is fixedly connected to the stirring shaft, and a sliding shoe that is movably connected to the swash plate;

[0017] The outer shell is fitted onto the outside of the cylinder and the connecting plate. The outer shell has a through hole at the position corresponding to the air inlet hole on the side of the cylinder. The outer shell is connected to the vessel body.

[0018] As a further improvement to the above solution, a detachable protective sleeve is also provided on the outer side of the outer shell. One end of the protective sleeve is provided with an air inlet, and an inner connecting pipe corresponding to the number of one-way air intake valves is provided on the inner side wall of the protective sleeve. One end of the inner connecting pipe can be inserted into the air intake hole on the side of the cylinder.

[0019] Through the above technical solution, the air intake component can fill the vessel with gas, regulate the pressure inside the vessel, and assist in stirring. The protective sleeve can be used to help fill the gas (such as inert gas).

[0020] As a further improvement to the above solution, the pneumatic auxiliary component includes:

[0021] The piston plate is defined as follows: the air inlet pipe closest to the feed pipe is designated as air inlet pipe one, and the others are designated as air inlet pipe two. The piston plate is movably installed inside the air inlet pipe one, and a movable rod is rotatably installed in the middle of the piston plate. The spiral impeller includes an upper impeller and a lower impeller, which are symmetrically installed on the movable rod. The upper impeller is located inside the air inlet pipe one, and the lower impeller is located outside the air inlet pipe one.

[0022] A return spring is provided. A support plate is fixedly connected to the bottom of the air intake pipe. The movable rod passes through the support plate, and a return spring is sleeved on the outside of the movable rod located between the support plate and the piston plate.

[0023] As a further improvement to the above solution, a pressure relief hole is provided on the side of the first intake pipe. In the initial state, the pressure relief hole is located below the piston plate, and the second intake pipe is provided with through holes arranged vertically.

[0024] Through the above technical solution, the pneumatic auxiliary component can use the airflow in the air intake pipe to drive the spiral impeller to rotate and move downward. When adding powdered additives, the spiral impeller can prevent the powdered additives from floating on the liquid surface.

[0025] As a further improvement to the above solution, an arc-shaped collection groove is provided at the bottom edge of the vessel body, and the lower port of the second air inlet pipe is located above the collection groove.

[0026] As a further improvement to the above scheme, an oil bath heating layer is also fixed on the outer wall of the vessel.

[0027] As a further improvement to the above solution, a pressure relief valve is installed on the vessel body.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] This invention uses a stirring shaft to drive the spiral stirring blades to rotate, accelerating the mixing of different solutions. The solution moves in a spiral motion along the surface of the spiral stirring blades. Combined with a crushing mesh, large fluid masses or vortices can be broken up, improving the stirring effect and promoting thorough mixing and reaction between materials.

[0030] This invention facilitates the adjustment of pressure inside the reactor by combining the air intake component and the air intake pipe. At the same time, it can also play a role in auxiliary stirring. The airflow in the air intake pipe can drive the spiral impeller to rotate and move downward, promoting the mixing of powdered additives and solution and preventing powdered additives from floating on the liquid surface. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0032] Figure 2 This is a cross-sectional view of the overall structure of Embodiment 1 of the present invention;

[0033] Figure 3 This is a partial structural diagram of the stirring assembly according to Embodiment 1 of the present invention;

[0034] Figure 4 This is a first-view schematic diagram of the connection relationship between the air intake assembly and the connecting plate according to Embodiment 1 of the present invention;

[0035] Figure 5 This is a second-view schematic diagram of the connection relationship between the air intake assembly and the connecting plate in Embodiment 1 of the present invention;

[0036] Figure 6 This is an enlarged schematic diagram of the protective sleeve according to Embodiment 1 of the present invention;

[0037] Figure 7 This is a schematic diagram showing the connection relationship between the pneumatic auxiliary component and the air intake pipe in Embodiment 2 of the present invention.

[0038] Key Symbol Explanation: 1. Kettle body; 2. Feed pipe; 3. Discharge pipe; 4. Stirring assembly; 41. Stirring shaft; 42. Motor; 43. Spiral stirring blades; 44. Crushing screen; 5. Support frame; 6. Air inlet pipe; 61. Air inlet pipe one; 62. Air inlet pipe two; 7. Connecting plate; 71. One-way air inlet valve one; 8. Air inlet assembly; 81. Cylinder; 82. Plunger; 83. One-way air inlet valve two; 84. Swashplate; 85. Slipper; 86. Outer shell;

[0039] 9. Protective sleeve; 91. Air inlet; 92. Inner connecting pipe; 10. Pneumatic auxiliary components; 101. Spiral impeller; 1011. Upper impeller; 1012. Lower impeller; 102. Piston plate; 103. Moving rod; 104. Return spring; 105. Support plate; 106. Pressure relief hole; 11. Collection tank; 12. Oil bath heating layer; 13. Pressure relief valve. Detailed Implementation

[0040] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0041] Example 1:

[0042] Please combine Figures 1-3 This embodiment describes a reactor for a multi-element alloy catalyst in a fuel cell, comprising a reactor body 1, a feed pipe 2 on the side of the reactor body 1, and a discharge pipe 3 at the bottom. Corresponding valves are provided on the discharge pipe 3 and the feed pipe 2.

[0043] To stir and mix the solution inside the vessel 1, a stirring assembly 4 is provided. Specifically, the stirring assembly 4 includes a stirring shaft 41, spiral stirring blades 43, and a crushing screen 44. The spiral stirring blades 43 and the crushing screen 44 are both fixedly connected to the stirring shaft 41, and there are two sets of each, with the two sets of spiral stirring blades 43 and crushing screens 44 distributed alternately.

[0044] When the stirring shaft 41 drives the spiral stirring blades 43 to rotate, it can stir the solution in the vessel 1, accelerate the mixing of different solutions, and under the action of the spiral stirring blades 43, the solution moves in a spiral motion along the blade surface, generating a strong axial transport capacity and circumferential stirring effect. This flow mode can allow the solution to be fully mixed and transferred over a longer path.

[0045] As the solution rises along the spiral stirring blades 43, it comes into contact with the crushing mesh 44, which is made of metal wire. The crushing mesh 44 breaks up and disperses large fluid masses or vortices formed during stirring, making the stirring more uniform and efficient. This allows for finer division and mixing of different solution materials, ensuring the effect of the spiral stirring blades 43 is better delivered to every corner of the reactor, improving the overall stirring effect and promoting thorough mixing and reaction of the materials.

[0046] Please combine Figures 4-6 Because the potential interactions between alloy catalysts often require control of the temperature and pressure within the reactor vessel, an oil bath heating layer 12 is fixedly installed outside the reactor body 1. Figure 2 (As indicated in the figure), the material inside the vessel 1 is heated by oil bath heating. Additionally, it is equipped with a thermometer, a pressure gauge to detect the pressure inside the vessel 1, and a level gauge to detect the liquid level inside the vessel 1. (This is prior art and is not shown in the figure).

[0047] Several air inlet pipes 6 are also provided inside the vessel body 1 to fill the vessel body 1 with gas. Therefore, a connecting plate 7 and an air inlet assembly 8 are also provided on the top of the vessel body 1.

[0048] Specifically, the connecting plate 7 is fixedly connected to the top of the vessel body 1. The connecting plate 7 has a through hole corresponding to the air inlet pipe 6, and a one-way air inlet valve 71 is installed in the through hole.

[0049] The intake assembly 8 includes a cylinder body 81, which is mounted on top of the connecting plate 7. A plunger 82 is movably mounted inside the cylinder body 81. The tip of the plunger 82 extends out of the cylinder body 81 and is fitted with a sliding shoe 85. Additionally, on the side of the cylinder body 81, there are intake holes (not shown in the figure) corresponding to the number of plungers 82, and a one-way intake valve 83 is installed inside each intake hole. The intake assembly 8 also includes a swashplate 84, which is fixedly connected to the stirring shaft 41, while the sliding shoe 85 is slidably mounted on the swashplate 84.

[0050] When the stirring shaft 41 drives the swashplate 84 to rotate, the swashplate 84 drives the plunger 82 to move up and down reciprocally within the cylinder 81 via the slipper 85. When the plunger 82 moves upward, the second one-way air intake valve 83 opens, drawing in gas; when the plunger 82 moves downward, the second one-way air intake valve 83 closes, and the first one-way air intake valve 71 opens, allowing gas to enter the air intake pipe 6. The gas then enters the vessel body 1 through the air intake pipe 6.

[0051] An outer shell 86 is also provided on the outside of the cylinder 81 and the swashplate 84. The outer shell 86 is used to protect the inner cylinder 81 and the swashplate 84. The outer shell 86 is fixedly connected to the connecting plate 7. Through holes are provided on the outer shell 86 at positions corresponding to the air inlet, so as not to affect the air intake function of the air inlet. In actual use, a filter screen can be added to the air inlet to prevent dust and other impurities from entering the vessel body 1.

[0052] It should be noted that there are two types of air inlet pipes 6. The air inlet pipe 6 closest to the feed pipe 2 is defined as air inlet pipe one 61, and the others are air inlet pipe two 62. Air inlet pipe two 62 extends into the vessel body 1, and has through holes arranged at equal intervals from top to bottom.

[0053] While the stirring shaft 41 drives the stirring assembly 4 to rotate and stir the material, gas is introduced into the vessel body 1 through the cooperation of the swash plate 84 and the air inlet pipe 6. When the airflow enters the vessel body 1 through the air inlet pipe 6, it can regulate the pressure inside the vessel body 1. Furthermore, because the lower end of the air inlet pipe 62 can extend below the liquid surface, and the pipe wall of the air inlet pipe 62 has holes, the gas rises in the solution in the form of bubbles. As the bubbles rise, they occupy space in the solution, pushing the surrounding solution to flow, thus creating localized liquid flow and mixing, achieving an effect similar to stirring. In addition, a pressure relief valve 13 is installed on the vessel body 1 to help regulate the pressure inside the vessel body 1.

[0054] Meanwhile, an arc-shaped recessed collection trough 11 is set at the bottom edge of the vessel body 1, and the bottom of the second air inlet pipe 62 is located above the collection trough 11. Therefore, if solid particles settle at the bottom of the vessel body, they will fall into the collection trough 11 along the inclined bottom structure. When the airflow at the bottom of the second air inlet pipe 62 blows towards the collection trough 11, it can blow up the sediment and accelerate fusion. This plays a role in preventing sedimentation.

[0055] Combined with the above-mentioned stirring assembly 4, the upper end of the stirring shaft 41 passes through the connecting plate 7, the cylinder 81, and the outer shell 86. For ease of installation, a support frame 5 is fixedly connected to the top of the assembly, and a motor 42 is installed on the top of the support frame 5. The motor 42 is connected to the stirring shaft 41.

[0056] Furthermore, the aforementioned air intake component 8 directly fills the vessel body 1 with air. However, some reactants or products in certain reaction systems are very sensitive to oxygen and are prone to side reactions or oxidation and deterioration. Therefore, air (oxygen) cannot be introduced into these systems. Hence, a removable protective sleeve 9 is provided.

[0057] Specifically, the protective sleeve 9 is supported by a flexible material, with an air inlet 91 at one end. The inner wall of the protective sleeve 9 has internal connecting pipes 92 corresponding to the number of the aforementioned one-way air inlet valves 83. The internal connecting pipes 92 are flexible hoses and can be inserted into the air inlet holes on the side of the cylinder 81. In use, the air inlet 91 can be connected to an inert gas or a gas source that will not react with the reactants. Similarly, gas can be introduced into the vessel body 1.

[0058] Example 2:

[0059] Please combine Figure 4 and Figure 7 When the multi-element alloy catalyst reacts within the reactor vessel 1, it may be necessary to add some auxiliary powder or carrier powder. Since the reactor vessel is a solution, the added auxiliary powder and carrier powder may float on the surface, reducing their effectiveness. To avoid this, a pneumatic auxiliary component 10 is also provided.

[0060] Specifically, as described in Embodiment 1 above, the air inlet pipe 6 near the feed pipe 2 is defined as air inlet pipe 61. Air inlet pipe 61 is relatively short, and its bottom is located above the feed pipe 2 (where it connects to the vessel body 1). The pneumatic auxiliary component 10 is installed on air inlet pipe 61.

[0061] Specifically, a support plate 105 is fixedly connected to the port of the intake pipe 61, and a movable rod 103 is movably connected to the support plate 105. The movable rod 103 passes through the support plate 105, and a return spring 104 is sleeved on the outer side of the movable rod 103 located above the support plate 105. In addition, the starting auxiliary assembly also includes a spiral impeller 101, which is divided into an upper impeller 1011 and a lower impeller 1012. The upper and lower impellers 1012 have the same structure and are symmetrically installed at both ends of the movable rod 103.

[0062] The upper impeller 1011 is located inside the intake pipe 61, and the lower impeller 1012 is located outside the intake pipe 61. A piston plate 102 is also installed on the movable rod 103 and below the upper impeller 1011. The piston plate 102 is rotatably connected to the movable rod 103.

[0063] When airflow passes through intake pipe 61 and blows onto the upper impeller 1011, due to the spiral structure of the upper impeller 1011 (smaller at the top and larger at the bottom), the airflow flows along the spiral structure, causing the upper impeller 1011 to rotate. The upper impeller 1011 then drives the lower impeller 1012 to rotate together via the movable rod 103. Furthermore, when the airflow blows onto the piston plate 102, it causes the piston plate 102 to move downwards. That is, at this time, the lower impeller 1012 will rotate and move downwards simultaneously.

[0064] As it moves downwards, it can enter below the liquid surface. The spiral structure, which is larger at the top and smaller at the bottom, can also press some of the powder below the liquid surface. When it rotates, it can play a stirring role, promoting the mixing of the powder with the solution in the vessel 1.

[0065] A pressure relief hole 106 is provided on the side of the intake pipe 61. In the initial state, the pressure relief hole 106 is located below the piston plate 102. When the piston plate 102, the spiral impeller 101, and the movable rod 103 move downward, they compress the return spring 104, causing it to deform. When the piston plate 102 moves to the position of the pressure relief hole 106, the airflow in the intake pipe 61 flows out through the pressure relief hole 106. At this time, under the action of the return spring 104, the piston plate 102 and the spiral impeller 101 return to their original positions.

[0066] Because when the plunger 82 moves downward in Embodiment 1, it will compress the airflow, and at this time the corresponding spiral impeller 101 moves downward. When the plunger 82 moves upward, the spiral impeller 101 and the piston plate 102 are reset.

[0067] The implementation principle of the reaction vessel for a multi-element alloy catalyst in fuel cells in this application is as follows:

[0068] (1): The solution in the vessel 1 is heated by oil bath heating. The stirring shaft 41 and the spiral stirring blades 43 are driven by the motor 42 to rotate, which accelerates the mixing of different solutions. Moreover, under the action of the spiral stirring blades 43, the solution moves in a spiral motion along the surface of the blades, so that the solution is fully mixed and mass transferred over a long path. The metal wire mesh 44 can break up large fluid masses or vortices, making the stirring more uniform and efficient, improving the overall stirring effect, and promoting the full mixing and reaction between materials.

[0069] (2): When the stirring shaft 41 rotates, gas can be filled into the vessel 1 through the cooperation of the air intake components 8 such as the swash plate 84. The pressure inside the vessel 1 can be adjusted. Moreover, the bubbles will occupy the space in the solution during the rising process, pushing the surrounding solution to flow, thereby generating local liquid flow and mixing, which has a similar effect to stirring.

[0070] (3): The airflow introduced into the air intake pipe 6 through the air intake assembly 8 drives the spiral impeller 101 in the pneumatic auxiliary assembly 10 to rotate and move downward. During the process of the lower impeller 1012 extending below the liquid surface, it can press the auxiliary powder into the solution. Moreover, the rotation can also play a stirring role, promote mixing, and prevent the powder from floating on the liquid surface.

[0071] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A reaction vessel for a fuel cell multi-component alloy catalyst, comprising a vessel body, a feed pipe and a discharge pipe provided on the vessel body, characterized in that, The kettle body is internally provided with: The stirring assembly comprises a stirring shaft, a spiral stirring blade fixedly installed on the stirring shaft, and a breaking net for breaking fluid clusters; An air inlet pipe is installed on the inner wall of the kettle body, an air inlet assembly connected with the stirring shaft is arranged at the upper end of the kettle body, and the upper end of the air inlet pipe is in communication with the air inlet assembly; A pneumatic auxiliary assembly is movably installed in the air inlet pipe, the pneumatic auxiliary assembly comprises a spiral impeller, the airflow in the air inlet pipe drives the spiral impeller to rotate and move downward at the same time, and the spiral impeller is located above the feeding pipe; A connecting disc is fixedly connected to the top of the kettle body, the stirring shaft penetrates through the connecting disc, a through hole is formed in the connecting disc, and a one-way air inlet valve one is installed in the through hole; The air inlet assembly further comprises: A cylinder body is installed above the connecting disc, a plunger is movably installed in the cylinder body, a sliding shoe is installed at the top of the plunger, a one-way air inlet valve two is installed in an air inlet hole formed in the side surface of the cylinder body, and a swash plate is fixedly connected to the stirring shaft. The sliding shoe and the swash plate are movably connected. An outer shell is sleeved on the outer side of the cylinder body and the connecting disc, a through hole is formed in the outer shell at a position corresponding to the air inlet hole in the side surface of the cylinder body, and the outer shell is connected to the kettle body. The pneumatic auxiliary assembly comprises: A piston plate is movably arranged in the air inlet pipe one, a movable rod is rotatably installed in the middle of the piston plate, the spiral impeller comprises an upper impeller and a lower impeller, the upper impeller and the lower impeller are symmetrically installed on the movable rod, the upper impeller is arranged inside the air inlet pipe one, and the lower impeller is located outside the air inlet pipe one. A reset spring is sleeved on the outer side of the movable rod between the plunger and the piston plate.

2. The autoclave for a fuel cell multi-alloy catalyst according to claim 1, wherein The stirring assembly further comprises a motor, a support frame is fixedly connected to the upper end of the kettle body, the motor is installed at the upper end of the support frame, the motor is connected to one end of the stirring shaft, the breaking net and the spiral stirring blade are provided in two groups and are installed in an upper-lower interval.

3. The autoclave for a fuel cell multi-alloy catalyst according to claim 1, wherein A detachable protective sleeve is further sleeved on the outer side of the outer shell, an air inlet is arranged at one end of the protective sleeve, an inner connecting pipe corresponding in number to the one-way air inlet valve two is arranged on the inner side wall of the protective sleeve, and one end of the inner connecting pipe is inserted into the air inlet hole in the side surface of the cylinder body.

4. The autoclave for a fuel cell multi-alloy catalyst according to claim 1, wherein A pressure relief hole is formed in the side surface of the air inlet pipe one, in the initial state, the pressure relief hole is located below the piston plate, and a through hole arranged in an upper-lower interval is formed in the air inlet pipe two.

5. The autoclave for a fuel cell multi-alloy catalyst according to claim 1, wherein An arc-shaped collecting groove is arranged at the edge of the bottom of the kettle body, and the lower end of the air inlet pipe two is located above the collecting groove.

6. The reaction vessel for a fuel cell multi-alloy catalyst according to claim 1, wherein An oil bath heating layer is further fixedly arranged on the outer wall of the kettle body.

7. The autoclave for a fuel cell multi-alloy catalyst according to claim 1, wherein A pressure relief valve is arranged on the kettle body.

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