Regeneration device for supported noble metal catalyst

Abstract

The utility model discloses a regeneration device for a supported noble metal catalyst, which comprises a catalyst washing tank, a liquid outlet pipe, a stirring component, a feeding pipe, a nitrogen feeding pipe and a conveying pipe are respectively mounted on the catalyst washing tank, and a vacuumizer is mounted on the nitrogen feeding pipe; the regeneration reactor is arranged on the lower side of the catalyst washing tank, a feeding pipe and a discharging pipe are installed on the regeneration reactor, the periphery of the regeneration reactor is sleeved with a first heater, and a plurality of temperature measuring thermocouples are installed on the outer wall of the regeneration reactor; the nitrogen purging reactor is connected with a nitrogen conveying pipe, the feeding pipe and the nitrogen conveying pipe are combined and then are communicated with the feeding pipe, and a second heater is mounted on the nitrogen conveying pipe; the controller is connected with the stirring assembly, the vacuumizer, the regeneration reactor, the first heater and the second heater in a wireless or wired mode and controls the stirring assembly, the vacuumizer, the regeneration reactor, the first heater and the second heater, and the temperature measuring thermocouple is connected with the controller for data interaction.

Description

Technical Field

[0001] The utility model relates to the field of catalyst regeneration devices, and particularly relates to a regeneration device for supported noble metal catalysts. Background Art

[0002] Due to its unique advantages in terms of safety and good regulation, the fixed-bed continuous catalytic hydrogenation process has achieved rapid development in the field of pharmaceutical synthesis in recent years. Such reactions often use supported noble metal catalysts of palladium and platinum types. With the maturity of technology application, the application scope and production scale are also continuously increasing. During the production process of such reactions, the catalyst will slowly deactivate due to reasons such as adsorption or poisoning of the catalyst active center, and the catalyst needs to be replaced regularly. However, such catalysts are expensive, resulting in high production costs.

[0003] At present, due to technical or production scale limitations, the vast majority of enterprises recycle used noble metal catalysts through suppliers. The main treatment method of most suppliers is only to extract the noble metal components from the waste catalyst and then use them for the preparation and production of noble metal catalysts. Through the analysis of the reasons for catalyst deactivation, irreversible poisoning caused by catalyst poisons, and through experiments, the temporary deactivation adsorbed by the active center can be restored to most of its usable activity through operations such as rinsing with various solutions and high-temperature calcination.

[0004] Therefore, a regeneration device for supported noble metal catalysts is needed, which can effectively realize the regeneration and reuse of some supported noble metal catalysts. For enterprises with a certain scale of use of such catalysts, it can effectively reduce the production costs of the enterprises, improve the production efficiency of the enterprises, and also have positive social benefits. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is that at present, due to technical or production scale limitations, the vast majority of enterprises recycle used noble metal catalysts through suppliers. The main treatment method of most suppliers is only to extract the noble metal components from the waste catalyst and then use them for the preparation and production of noble metal catalysts. Through the analysis of the reasons for catalyst deactivation, irreversible poisoning caused by catalyst poisons, and through experiments, the temporary deactivation adsorbed by the active center can be restored to most of its usable activity through operations such as rinsing with various solutions and high-temperature calcination. The utility model provides a regeneration device for supported noble metal catalysts, which can effectively realize the regeneration and reuse of some supported noble metal catalysts. For enterprises with a certain scale of use of such catalysts, it can effectively reduce the production costs of the enterprises, improve the production efficiency of the enterprises, and also have positive social benefits. The structure is simple and easy to use, so as to solve the defects caused by the prior art.

[0006] To solve the above technical problem, the utility model provides the following technical solutions:

[0007] In a first aspect, a regeneration device for a supported noble metal catalyst, which includes a catalyst washing tank, on which a liquid outlet pipe, a stirring assembly, a feeding pipe, a nitrogen feeding pipe, and a feeding pipe are respectively installed. A vacuum pump is installed on the nitrogen feeding pipe for creating a vacuum environment and inerting during the addition of the catalyst;

[0008] A regeneration reactor is arranged below the catalyst washing tank, which is convenient for pressing the catalyst and the washing solvent into the regeneration reactor after washing, ensuring the sealing and working efficiency of the equipment. An inlet pipe and an outlet pipe are respectively installed on the regeneration reactor. A first heater is sleeved outside the regeneration reactor, and the regeneration temperature is between 250°C and 350°C, and the first heater is required for heating. A plurality of temperature measuring thermocouples are installed on the outer wall of the regeneration reactor;

[0009] A nitrogen purging reactor, a nitrogen delivery pipe is connected to the nitrogen purging reactor, the feeding pipe is merged with the nitrogen delivery pipe and then communicated with the inlet pipe, and a second heater is installed on the nitrogen delivery pipe;

[0010] A controller, which is respectively connected to the stirring assembly, the vacuum pump, the regeneration reactor, the first heater, and the second heater through wireless or wired means for control, and the temperature measuring thermocouple is connected to the controller for data interaction;

[0011] The used catalyst that meets the regeneration requirements after evaluation is added to the catalyst washing tank, and water, alkali solution, organic solvent, etc. are added in sequence for washing and then pressed into the catalyst washing tank through a pipeline for washing. The washing solution enters the regeneration reactor for collection, the solvent is dried, and then the heated nitrogen is purged and the electric heating is turned on to reach the set temperature and maintain it for a period of time, and then it is cooled and the catalyst is unloaded for standby.

[0012] For the above-mentioned regeneration device for a supported noble metal catalyst, the liquid outlet pipe, the stirring assembly, the feeding pipe, and the nitrogen feeding pipe are all installed on the top of the catalyst washing tank, the feeding pipe is installed at the bottom of the catalyst washing tank, and the feeding port of the feeding pipe is deeply inserted into the head to prevent the catalyst from remaining in the catalyst washing tank;

[0013] The section of the liquid outlet pipe arranged inside the catalyst washing tank extends to the bottom of the catalyst washing tank, and a liquid outlet filter element is installed, which can filter the catalyst and discharge the washing liquid;

[0014] A visual sight glass is installed on the catalyst washing tank, which can observe the situation inside the kettle in real time;

[0015] A first control valve is installed on each of the liquid outlet pipe, the feeding pipe, the nitrogen feeding pipe, and the feeding tube.

[0016] The controller is respectively connected to control the first control valve.

[0017] In the above-mentioned regeneration device for a supported noble metal catalyst, the stirring assembly includes a stirrer and a stirring rod. One end of the stirring rod inserted into the inside of the catalyst washing tank is provided with a stirring blade, and the stirrer is installed at the other end of the stirring rod.

[0018] The controller is connected to control the stirrer.

[0019] In the above-mentioned regeneration device for a supported noble metal catalyst, the feeding pipe is connected to the top of the regeneration reactor, the discharging pipe is connected to the bottom of the regeneration reactor, a filter layer is installed at the bottom of the regeneration reactor, a tray is installed at the bottom of the filter layer. The specification of the filter layer is 200um - 300um, which can intercept the catalyst and filter the washing solvent, ensure that gas and liquid can pass through, intercept the catalyst. The middle of the tray is a through-hole structure, and the through-hole is filled with an object to avoid dead corners, and the catalyst can be discharged at the end of regeneration.

[0020] A second control valve is installed on each of the feeding pipe and the discharging pipe.

[0021] The controller is respectively connected to control the second control valve.

[0022] In the above-mentioned regeneration device for a supported noble metal catalyst, a third control valve is installed on the nitrogen delivery pipe.

[0023] The controller is connected to control the third control valve.

[0024] In the above-mentioned regeneration device for a supported noble metal catalyst, a collecting pipe is connected to the bottom of the regeneration reactor, the other end of the collecting pipe is connected to a collecting tank, a fourth control valve is installed on the collecting pipe, and the controller is connected to control the fourth control valve.

[0025] In the above-mentioned regeneration device for a supported noble metal catalyst, an exhaust pipe is connected between the regeneration reactor and the fourth control valve on the collecting pipe, a fifth control valve is connected to the exhaust pipe, the controller is connected to control the fifth control valve, and the collecting pipe is respectively connected to the collecting tank and the exhaust pipe for use in different stages during the regeneration process.

[0026] The above-mentioned regeneration device for a supported noble metal catalyst, wherein a first pressure gauge is installed at the top of the catalyst washing tank, and a second pressure gauge is installed on the feed pipe, capable of detecting the pressures in the catalyst washing tank and the regeneration reactor in real time;

[0027] The first pressure gauge and the second pressure gauge are respectively connected to the controller to realize data interaction, and the detected values are transmitted to the controller and displayed through the display screen connected to the controller.

[0028] In a second aspect, a method for using a regeneration device for a supported noble metal catalyst, which includes the following steps:

[0029] Step 1: Open the vacuum pump to evacuate the catalyst washing tank to a negative pressure, open the feeding pipe, and suck the catalyst to be regenerated and water into the catalyst washing tank together by vacuum;

[0030] Step 2: Close the feeding pipe, open the nitrogen feeding pipe, and displace the gas in the catalyst washing tank with nitrogen to make the inside an inert atmosphere;

[0031] Step 3: Add the lye and start the stirring component for rinsing, and pump the lye out from the bottom through the liquid outlet pipe by suction filtration;

[0032] Step 4: Add water and start the stirring component for rinsing, pump the water out from the bottom through the liquid outlet pipe by suction filtration, and repeat until the pH of the water is detected to be neutral;

[0033] Step 6: Add the aromatic hydrocarbon solvent and start the stirring component for rinsing, open the feeding pipe, press the catalyst together with the solvent into the regeneration reactor, and use the solvent to rinse the catalyst washing tank clean and press all of it into the regeneration reactor, then close the feeding pipe;

[0034] Step 7: Start purging the reactor with nitrogen. After there is no obvious increase in the liquid level in the regeneration reactor, switch to venting to the process vent, and start the first heater to gradually increase the temperature;

[0035] Step 8: Keep the temperature constant for 4h to 8h after rising to the target temperature. After the constant temperature ends, slowly cool to room temperature, open the discharge pipe, and unload the catalyst from the bottom.

[0036] In the above-mentioned method for using a regeneration device for a supported noble metal catalyst, the target temperature in Step 8 is 250 degrees - 350 degrees.

[0037] According to the technical solution provided by the above-mentioned regeneration device for a supported noble metal catalyst of the present invention, the following technical effects are achieved:

[0038] It can effectively realize the regeneration and reuse of the partial load precious metal catalyst. For enterprises with a certain scale of use of this type of catalyst, it can effectively reduce the production cost of the enterprise, improve the production efficiency of the enterprise, and also have positive social benefits. The structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 FIG. is a schematic structural diagram of a regeneration device for a supported precious metal catalyst of the present invention.

[0040] Among them, the reference numerals are as follows:

[0041] Catalyst washing tank 100, regeneration reactor 200, nitrogen purging reactor 300, liquid outlet pipe 101, stirrer 102, stirring rod 103, stirring blade 104, feeding pipe 105, nitrogen feed pipe 106, feeding pipe 107, vacuum pump 109, liquid outlet filter element 110, feed pipe 201, discharge pipe 202, first heater 203, temperature measuring thermocouple 204, second heater 302, filter layer 205, collection pipe 206, exhaust pipe 207, collection tank 208, nitrogen delivery pipe 301. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the specific drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0043] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0044] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present invention can be implemented. Therefore, they do not have any technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed by the present invention can cover.

[0045] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear description and are not used to limit the scope within which the present invention can be implemented. Any change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope within which the present invention can be implemented.

[0046] A preferred embodiment of the present utility model provides a regeneration device for supported noble metal catalysts, aiming to realize the regeneration and reuse of some supported noble metal catalysts. For enterprises with a certain scale of use of such catalysts, it can effectively reduce the production cost of the enterprise, improve the production efficiency of the enterprise, and also have positive social benefits. The structure is simple and convenient to use.

[0047] As Figure 1 shown, on the first aspect, in the first embodiment, a regeneration device for supported noble metal catalysts, which includes a catalyst washing tank 100, on which a liquid outlet pipe 101, a stirring assembly, a feeding pipe 105, a nitrogen feeding pipe 106, and a feeding pipe 107 are respectively installed. A vacuum pump 109 is installed on the nitrogen feeding pipe 106 for creating a vacuum environment and inerting when adding catalysts.

[0048] A regeneration reactor 200 is arranged on the lower side of the catalyst washing tank 100, which is convenient for pressing the catalyst and the washing solvent into the regeneration reactor 200 after washing, ensuring the sealing and working efficiency of the equipment. An inlet pipe 201 and an outlet pipe 202 are respectively installed on the regeneration reactor 200. A first heater 203 is sleeved outside the regeneration reactor 200. The regeneration temperature is between 250°C and 350°C, and the first heater 203 is required for heating. A plurality of temperature measuring thermocouples 204 are installed on the outer wall of the regeneration reactor 200.

[0049] A nitrogen purge reactor 300 is connected with a nitrogen delivery pipe 301. The feeding pipe 107 and the nitrogen delivery pipe 301 are merged and communicated with the inlet pipe 201. A second heater 302 is installed on the nitrogen delivery pipe 301 for heating nitrogen.

[0050] A controller is respectively connected to the stirring assembly, the vacuum pump 109, the regeneration reactor 200, the first heater 203, and the second heater 302 through wireless or wired means for control. The temperature measuring thermocouple 204 is connected to the controller for data interaction.

[0051] The used catalyst that meets the regeneration requirements after evaluation is added into the catalyst washing tank 100, and water, alkali solution, organic solvent, etc. are added in sequence for washing, and then it is pressed into the catalyst washing tank 100 through a pipeline for washing. The washing solution enters the regeneration reactor 200 for collection. After drying the solvent, the heated nitrogen is purged and the electric heating is turned on to make it reach the set temperature and maintain for a period of time, and then it is cooled and the catalyst is unloaded for standby.

[0052] A temperature adjustment component is installed on the catalyst washing tank 100. The temperature adjustment component includes a circulation pipe with both ends communicating with the catalyst washing tank 100. A circulation pump and a third heater are installed on the circulation pipe. A temperature sensor is installed on the catalyst washing tank 100. The temperature sensor detects the temperature inside the catalyst washing tank 100 in real time and transmits it to the controller. The controller controls the operation of the circulation pump and the third heater respectively according to the preset temperature value to adjust the solvent inside the catalyst washing tank 100.

[0053] In the above-mentioned regeneration device for a supported noble metal catalyst, the liquid outlet pipe 101, the stirring component, the feeding pipe 105, and the nitrogen feeding pipe 106 are all installed on the top of the catalyst washing tank 100. The feeding pipe 107 is installed at the bottom of the catalyst washing tank 100. The feeding port of the feeding pipe 105 is a head that extends inward to prevent the catalyst from remaining in the catalyst washing tank 100.

[0054] A section of the liquid outlet pipe 101 inside the catalyst washing tank 100 extends to the bottom of the catalyst washing tank 100, and a liquid outlet filter element 110 is installed, which can filter the catalyst and discharge the washing liquid.

[0055] A visual sight glass is installed on the catalyst washing tank 100, which can observe the situation inside the kettle in real time.

[0056] First control valves are installed on the liquid outlet pipe 101, the feeding pipe 105, the nitrogen feeding pipe 106, and the feeding pipe 107. The controller controls the opening and closing of the first control valve on the liquid outlet pipe 101 to discharge liquid, controls the opening and closing of the first control valve on the feeding pipe 105 to feed materials, controls the opening and closing of the first control valve on the nitrogen feeding pipe 106 to add nitrogen, and controls the opening and closing of the first control valve on the feeding pipe 107 to feed materials.

[0057] In the above-mentioned regeneration device for a supported noble metal catalyst, the stirring component includes a stirrer 102 and a stirring rod 103. One end of the stirring rod 103 inserted into the catalyst washing tank 100 is installed with a stirring blade 104, and the stirrer 102 is installed at the other end of the stirring rod 103.

[0058] The controller is connected to the stirrer 102 for control.

[0059] In the above-mentioned regeneration device for a supported noble metal catalyst, the feed pipe 201 is connected to the top of the regeneration reactor 200, the discharge pipe 202 is connected to the bottom of the regeneration reactor 200. A filter layer 205 is installed at the bottom of the regeneration reactor 200. A tray is installed at the bottom of the filter layer 205. The specification of the filter layer 205 is 200um - 300um, which can intercept the catalyst and filter the washing solvent, ensure that gas and liquid can pass through, intercept the catalyst. The middle of the tray is a through-hole structure, and the through-hole is filled with a solid object to avoid dead corners and can discharge the catalyst at the end of regeneration.

[0060] Second control valves are installed on both the feed pipe 201 and the discharge pipe 202. The controller controls the opening and closing of the second control valve connected to the feed pipe 201 for feeding and controls the opening and closing of the second control valve connected to the discharge pipe 202 for discharging.

[0061] In the above-mentioned regeneration device for supported noble metal catalyst, a third control valve is installed on the nitrogen delivery pipe 301. The controller controls the opening and closing of the third control valve connected to the nitrogen delivery pipe 301 to conduct nitrogen delivery.

[0062] In the above-mentioned regeneration device for supported noble metal catalyst, a collection pipe 206 is connected to the bottom of the regeneration reactor 200. The other end of the collection pipe 206 is connected to a collection tank 208. A fourth control valve is installed on the collection pipe 206. The controller controls the opening and closing of the fourth control valve connected to the collection pipe 206 to conduct material delivery.

[0063] In the above-mentioned regeneration device for supported noble metal catalyst, an exhaust pipe 207 is connected between the regeneration reactor 200 and the fourth control valve on the collection pipe 206. A fifth control valve is connected to the exhaust pipe 207. The controller controls the connection of the fifth control valve. The collection pipe 206 is respectively connected to the collection tank 208 and the exhaust pipe 207 for use in different stages during the regeneration process.

[0064] In the above-mentioned regeneration device for supported noble metal catalyst, a first pressure gauge is installed on the top of the catalyst washing tank 100, and a second pressure gauge is installed on the feed pipe 201, capable of detecting the pressure in the catalyst washing tank 100 and the regeneration reactor 200 in real time;

[0065] The first pressure gauge and the second pressure gauge are respectively connected for data interaction, and the detected values are transmitted to the controller and displayed on the display screen connected to the controller.

[0066] Second aspect, second embodiment, a method for using a regeneration device for supported noble metal catalyst, which includes the following steps:

[0067] Step 1: Turn on the vacuum pump 109 to evacuate the catalyst washing tank 100 to a negative pressure. Open the feeding pipe 105, and use the vacuum method to draw the catalyst to be regenerated and water into the catalyst washing tank 100 together;

[0068] Step 2: Close the feeding pipe 105, open the nitrogen feeding pipe 106, and use nitrogen to displace the gas in the catalyst washing tank 100 to make its internal atmosphere inert;

[0069] Step 3: Add lye and turn on the stirring assembly for rinsing. Press out the lye from the bottom through the liquid outlet pipe 101 by suction filtration.

[0070] Step 4: Add water and turn on the stirring assembly for rinsing. Press out the water from the bottom through the liquid outlet pipe 101 by suction filtration, and repeat until the pH of the water is detected to be neutral.

[0071] Step 6: Add aromatic hydrocarbon solvent and turn on the stirring assembly for rinsing. Open the feeding pipe 107, press the catalyst together with the solvent into the regeneration reactor 200, and use the solvent to rinse the catalyst washing tank 100 clean and press all of it into the regeneration reactor 200, then close the feeding pipe 107.

[0072] Step 7: Start purging the reactor 300 with nitrogen. After there is no obvious increase in the liquid level in the regeneration reactor 200, switch to venting to the process vent, and turn on the first heater 203 for gradual heating.

[0073] Step 8: After reaching the target temperature, keep it at a constant temperature for 4 h to 8 h. After the constant temperature ends, slowly cool it to room temperature, open the discharge pipe 202, and unload the catalyst from the bottom.

[0074] The usage method of the above-mentioned regenerating device for supported noble metal catalyst, wherein the target temperature in Step 8 is 250 °C - 350 °C.

[0075] In summary, the regenerating device for supported noble metal catalyst of the present utility model can effectively realize the regeneration and reuse of some supported noble metal catalysts. For enterprises with a certain scale of use of such catalysts, it can effectively reduce the production cost of the enterprises, improve the production efficiency of the enterprises, and also have positive social benefits. The structure is simple and convenient to use.

[0076] The specific embodiments of the utility model have been described above. It should be understood that the utility model is not limited to the above specific implementation manners. The equipment and structures not described in detail should be understood to be implemented in a common manner in the art; those skilled in the art can make various deformations or modifications within the scope of the claims, make several simple deductions, deformations or substitutions, which do not affect the essence of the utility model.

Claims

1. A regeneration device for a supported precious metal catalyst, characterized in that: It comprises a catalyst washing tank, on which a liquid outlet pipe, a stirring assembly, a feeding pipe, a nitrogen feed pipe and a feeding pipe are respectively installed, and a vacuum pump is installed on the nitrogen feed pipe; A regeneration reactor is arranged at the lower side of the catalyst washing tank, a feed pipe and a discharge pipe are respectively installed on the regeneration reactor, a first heater is arranged on the outer sleeve of the regeneration reactor, and a plurality of temperature measuring thermocouples are installed on the outer wall of the regeneration reactor; A nitrogen purging reactor, wherein the nitrogen purging reactor is connected to a nitrogen delivery pipe, the feed pipe is connected to the feed pipe after being combined with the nitrogen delivery pipe, and a second heater is installed on the nitrogen delivery pipe; A controller is connected to the stirring assembly, the vacuum pump, the regeneration reactor, the first heater, and the second heater respectively through wireless or wired connections to control them, and the temperature measuring thermocouple is connected to the controller for data exchange.

2. A regeneration device for a supported noble metal catalyst as claimed in claim 1, characterized in that: The liquid outlet pipe, the stirring assembly, the feeding pipe, and the nitrogen feeding pipe are all installed on the top of the catalyst washing tank, and the feeding pipe is installed on the bottom of the catalyst washing tank; The liquid outlet pipe is arranged inside the catalyst washing tank, a section of which extends to the bottom of the catalyst washing tank and is equipped with a liquid outlet filter element; The liquid outlet pipe, the feed pipe, the nitrogen feed pipe and the feed pipe are all equipped with a first control valve; The controllers respectively control the connection of the first control valves.

3. A regeneration device for a supported noble metal catalyst as claimed in claim 1, characterized in that: The stirring assembly comprises a stirrer and a stirring rod, wherein one end of the stirring rod inserted into the catalyst washing tank is provided with a stirring blade, and the stirrer is provided at the other end of the stirring rod; The controller controls the connection of the stirrer.

4. A regeneration device for a supported noble metal catalyst as claimed in claim 1, characterized in that: The feed pipe is connected to the top of the regeneration reactor, the discharge pipe is connected to the bottom of the regeneration reactor, a filter layer is installed at the bottom of the regeneration reactor, and a tray is installed at the bottom of the filter layer; The feed pipe and the discharge pipe are both equipped with a second control valve; The controllers respectively control the connection of the second control valves.

5. The regeneration device for a supported noble metal catalyst according to claim 1, characterized in that: A third control valve is installed on the nitrogen delivery pipe; The controller controls the connection of the third control valve.

6. A regeneration device for a supported noble metal catalyst as claimed in claim 1, characterized in that: A collecting pipe is connected to the bottom of the regeneration reactor, and the other end of the collecting pipe is connected to a collecting tank. A fourth control valve is installed on the collecting pipe, and the controller controls the connection of the fourth control valve.

7. A regeneration device for a supported noble metal catalyst as claimed in claim 6, characterized in that: An exhaust pipe is connected to the collecting pipe between the regeneration reactor and the fourth control valve, a fifth control valve is connected to the exhaust pipe, and the controller controls the connection of the fifth control valve.

8. The regeneration device for a supported noble metal catalyst according to claim 1, characterized in that: A first pressure detection gauge is installed on the top of the catalyst washing tank, and a second pressure detection gauge is installed on the feed pipe; The first pressure detection gauge and the second pressure detection gauge are respectively connected to the control to realize data exchange.

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