Purification and activity regeneration system for Pt-group noble metal carbon-based catalyst

Abstract

The utility model provides a purification and active regeneration system for a Pt-group noble metal carbon-based catalyst, and belongs to the field of catalyst regeneration, the purification and active regeneration system for the Pt-group noble metal carbon-based catalyst comprises an airflow washing impurity removal kettle, a medicament kettle, an ultrasonic deep impurity removal kettle, a vacuum pyrolysis column, a vacuum waste acid tank, an air compressor, a vacuum pump and a wastewater sedimentation tank, according to the present invention, the modular design of the multiple purification and regeneration technologies is integrated, such that the regeneration rate of the Pt-group noble metal carbon-based catalyst is improved, the environmental protection and the operation efficiency are considered, the safety risk during the operation process is reduced, and the significant technical and economic advantages are provided; and moreover, the modularized design also enables the maintenance and replacement of parts to be more convenient.

Description

Technical Field

[0001] The present application relates to the technical field of catalyst regeneration, and in particular to a purification and active regeneration system of a Pt-family noble metal carbon-based catalyst. Background Art

[0002] The research on carbon-based catalysts began in the 1950s. Initially, it was mainly used for thermal catalytic reactions. Since the 1970s, with the development and application of porous materials, more carbon-based catalysts have begun to be involved in gas-phase catalysis, liquid phase and other fields. With the continuous development of catalyst preparation methods, properties and application technologies, the types of carbon-based catalysts are increasing. Among them, Pt-based noble metal carbon-based catalysts are used to prepare high-performance lithium-ion batteries and supercapacitors. In order to effectively increase the service life of Pt-based noble metal carbon-based catalysts, catalyst regeneration technology is an important technology in the chemical industry. The service life directly affects the level of production efficiency and economic benefits of the chemical industry. Therefore, the development of catalyst regeneration technology is of great significance to industrial development. The industries where catalyst regeneration technology is widely used mainly include petrochemical, chemical, electric power, metallurgy and other fields. In the petrochemical industry, catalyst regeneration technology is often used in production processes such as catalytic cracking and heavy oil hydrogenation. It can not only improve reaction efficiency and extend the service life of catalysts, but also reduce exhaust gas emissions and reduce environmental pollution. In the chemical industry, catalyst regeneration technology is also widely used in organic synthesis, catalytic hydrogenation, catalytic oxidation and other reaction processes, which can significantly improve reaction efficiency and product quality. In addition, catalyst regeneration technology can also be effectively applied in the fields of electricity, metallurgy, etc.

[0003] Catalyst regeneration refers to the process of cleaning and removing impurities and scale deposited on the catalyst surface through a regeneration process, so that the catalyst can regain its activity and continue to participate in the reaction process, thereby reducing pollution and improving efficiency. Common catalyst regeneration technologies include heat treatment, water washing, steam oxidation, etc. The principle of catalyst regeneration is to increase the reaction rate and selectivity, reduce energy consumption, and improve product quality by changing the type and activity of reactants on the catalyst surface. However, the current catalyst purification and activity regeneration system has problems such as incomplete functions, low catalyst recovery rate, complex operation, and poor safety.

[0004] In view of this, it is necessary to design a purification and activity regeneration system for Pt group noble metal carbon-based catalysts to solve the above problems. Utility Model Content

[0005] In view of the technical problems existing in the background technology, the present application provides a purification and active regeneration system for a Pt group noble metal carbon-based catalyst. The purification and active regeneration system for a Pt group noble metal carbon-based catalyst adopts a modular design that integrates multiple purification and regeneration technologies, which not only improves the regeneration rate of the Pt group noble metal carbon-based catalyst, but also takes into account environmental protection and operating efficiency, reducing safety risks during operation.

[0006] The embodiment of the present application provides a purification and active regeneration system for a Pt group noble metal carbon-based catalyst, comprising: an airflow washing and impurity removal kettle, a reagent kettle connected to the reagent feeding port of the airflow washing and impurity removal kettle through a pipeline one, an ultrasonic deep impurity removal kettle with a material inlet second connected to a material outlet one of the airflow washing and impurity removal kettle, a vacuum pyrolysis column with a feeding port connected to a material outlet two of the ultrasonic deep impurity removal kettle, and a vacuum waste acid tank connected to a water quenching liquid return port and a water quenching liquid discharge port of the vacuum pyrolysis column through a pipeline three.

[0007] In some embodiments, the purification and active regeneration system of the Pt group noble metal carbon-based catalyst also includes: an air compressor connected to the airflow washing and impurity removal kettle and the ultrasonic deep impurity removal kettle, a vacuum pump connected to the ultrasonic deep impurity removal kettle and the vacuum waste acid tank, and a wastewater sedimentation tank connected to the airflow washing and impurity removal kettle through pipeline 2.

[0008] In the technical scheme of the embodiment of the present application, by setting an airflow washing and impurity removal kettle, a reagent kettle, an ultrasonic deep impurity removal kettle, a vacuum pyrolysis column, a vacuum waste acid tank, an air compressor, a vacuum pump, and a wastewater sedimentation tank, a modular design integrating multiple purification and regeneration technologies is adopted, which not only improves the regeneration rate of the Pt family noble metal carbon-based catalyst, but also takes into account environmental protection and operating efficiency, reduces the safety risks during operation, and has significant technical and economic advantages; and the modular design also makes maintenance and replacement of parts more convenient. Among them, the combined use of the airflow washing and impurity removal kettle and the ultrasonic deep impurity removal kettle can effectively remove the adhered impurities on the surface of the carbon-based catalyst and improve the purity of the catalyst. The use of the vacuum pyrolysis column can perform closed pyrolysis under a certain moisture content, so that the substances adsorbed on the catalyst carrier activated carbon decompose or volatilize, thereby restoring the adsorption capacity of the catalyst and improving its carrier strength. Through the treatment of the wastewater sedimentation tank, the wastewater and harmful substances generated during the purification process can be reduced, and the impact on the environment can be reduced.

[0009] In some embodiments, the airflow washing and impurity removal kettle comprises a kettle body, a gas aerator and a drainage filter arranged in the kettle body, a pressure sensor arranged on the kettle body, and a heat exchange jacket arranged on the outer wall of the kettle body.

[0010] The wastewater sedimentation tank is connected to the outlet of the drainage filter 1 of the airflow washing and impurity removal kettle through the pipeline 2.

[0011] In this embodiment, by providing a gas aerator, it is possible to ensure that the airflow passes through the carbon-based catalyst evenly, effectively peel off and remove impurities adhered to the surface, and improve the purification efficiency; by providing a drainage filter, it is possible to intercept and remove the washed impurities, prevent these impurities from entering the subsequent treatment stage, and ensure the cleanliness and efficient operation of the entire system; by providing a pressure sensor, it is possible to monitor the pressure in the kettle in real time, ensure that the airflow washing process is carried out at the optimal pressure, and avoid damage to the catalyst due to excessive or low pressure; by providing a heat exchange jacket, the temperature of the kettle body can be controlled, which is crucial for maintaining constant washing conditions and helps to improve the stability and repeatability of the purification process.

[0012] In some embodiments, the ultrasonic deep impurity removal kettle comprises a kettle body 2, a gas aerator 2 disposed in the kettle body 2, an ultrasonic vibration rod penetrating the top of the kettle body 2, and a pressure sensor 2 disposed on the kettle body 2;

[0013] The top of the second kettle body is provided with a second material inlet and a second exhaust port;

[0014] A gas exhaust valve 2 is arranged on the pipeline connected to the exhaust port 2 of the kettle body 2 of the ultrasonic deep impurity removal kettle, and a material discharge valve 2 is arranged at the material outlet 2 of the ultrasonic deep impurity removal kettle.

[0015] In this embodiment, by providing an ultrasonic vibrating rod, the effect of ultrasonic waves can deeply reach impurities that are difficult to reach with traditional methods, thereby improving the purification quality of the catalyst; by providing a second pressure sensor, the pressure in the kettle body can be monitored in real time to avoid equipment damage or safety accidents caused by excessively high or low pressure.

[0016] In some embodiments, the vacuum pyrolysis column includes a material-carrying sealed column, an electromagnetic heating coil wound around the outer wall of the material-carrying sealed column, a pressure sensor and a temperature sensor disposed on the material-carrying sealed column, and a solid-liquid separator disposed in the material-carrying sealed column;

[0017] The outlet of the solid-liquid separator of the vacuum pyrolysis column is connected to the waste acid discharge port of the vacuum waste acid tank through a pipeline 4.

[0018] In this embodiment, by winding the electromagnetic heating coil around the outer wall of the material-carrying sealing column, uniform and efficient heat can be provided, which is beneficial to the pyrolysis process, thereby effectively decomposing or volatilizing the substances adsorbed on the catalyst carrier activated carbon; by setting a temperature sensor, the operator can monitor and control the temperature in the pyrolysis column in real time to ensure that the pyrolysis process is carried out at an appropriate temperature to improve the regeneration effect of the catalyst; by setting a solid-liquid separator, the solid catalyst can be separated from the liquid during the pyrolysis process, which is convenient for subsequent processing and recovery.

[0019] In some embodiments, the vacuum waste acid tank is provided with a water quenching liquid return port, a waste acid liquid discharge port, a vacuum negative pressure port, and an exhaust port;

[0020] A water quenching return valve is provided on the pipe three near the water quenching return port of the vacuum waste acid tank, a waste acid discharge valve is provided on the pipe four near the waste acid discharge port of the vacuum waste acid tank, a vacuum negative pressure valve is provided at the vacuum negative pressure port of the vacuum waste acid tank, and a gas exhaust valve four is provided on the pipe connected to the exhaust port four of the vacuum waste acid tank;

[0021] The pipeline 4 is provided with a pipeline 9; the pipeline 9 is provided with a water quenching pure water valve.

[0022] In some embodiments, the top of the kettle body is provided with the reagent adding port, the material inlet 1, and the exhaust port 1;

[0023] A material adding valve is arranged on the pipeline connected to the material inlet 1 of the kettle body 1 of the airflow washing and impurity removal kettle, a reagent adding valve is arranged on the pipeline 1 near one end of the airflow washing and impurity removal kettle, a gas exhaust valve 1 is arranged on the pipeline connected to the exhaust port 1 of the airflow washing and impurity removal kettle; a waste liquid discharge valve 1 is arranged on the pipeline 2 near one end of the airflow washing and impurity removal kettle, and a material discharge valve 1 is arranged at the material outlet of the airflow washing and impurity removal kettle.

[0024] In some embodiments, the top of the material-carrying sealed column is provided with a feed port and an exhaust port, and the bottom of the material-carrying sealed column is provided with a regenerated catalyst exhaust port;

[0025] A gas exhaust valve three is arranged on the pipeline connected to the exhaust port three of the material-carrying sealing column; a water quenching drain valve is arranged at the water quenching drain port of the material-carrying sealing column, and a regenerated catalyst discharge valve is arranged at the regenerated catalyst discharge port of the material-carrying sealing column.

[0026] In some embodiments, a metering pump is provided on the pipeline near one end of the medicine kettle.

[0027] In some embodiments, the air compressor is connected to the gas aerator 1 in the airflow washing and impurity removal kettle through pipeline 5; the air compressor is connected to the gas aerator 2 in the ultrasonic deep impurity removal kettle through pipeline 6;

[0028] The pipeline 5 is provided with a compressed air valve 1; the pipeline 6 is provided with a compressed air valve 2;

[0029] The vacuum pump is connected to the vacuum port of the ultrasonic deep impurity removal kettle through pipeline seven; a vacuum liquid extraction valve is arranged on pipeline seven; the vacuum pump is connected to the vacuum negative pressure port of the vacuum waste acid tank through a pipeline.

[0030] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0031] The beneficial effects of the utility model are:

[0032] The purification and active regeneration system of the Pt group noble metal carbon-based catalyst provided by the utility model is designed with a modular design that integrates multiple purification and regeneration technologies by arranging an air flow washing and impurity removal kettle, a reagent kettle, an ultrasonic deep impurity removal kettle, a vacuum pyrolysis column, a vacuum waste acid tank, an air compressor, a vacuum pump, and a wastewater sedimentation tank. It not only improves the regeneration rate of the Pt group noble metal carbon-based catalyst, but also takes environmental protection and operating efficiency into consideration, reduces safety risks during operation, and has significant technical and economic advantages. Moreover, the modular design also makes maintenance and replacement of components more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings used in the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is a schematic diagram of the structure of the purification and active regeneration system of the Pt noble metal carbon-based catalyst in the embodiment of the present application;

[0035] Description of reference numerals:

[0036] 11. Kettle body 1; 111. Medicament dosing port; 112. Material inlet 1; 113. Exhaust port 1; 114. Material dosing valve; 115. Medicament dosing valve; 116. Gas exhaust valve 1; 117. Waste liquid discharge valve 1; 118. Material discharge valve 1; 12. Gas aerator 1; 13. Drain filter 1; 14. Pressure sensor 1; 15. Heat exchange jacket; 16. Pure water dosing valve; 2. Medicament kettle; 21. Metering pump; 31. Kettle body 2; 311. Material inlet 2; 312. Exhaust port 2; 313. Gas exhaust valve 2; 314. Material discharge valve 2; 32. Gas aerator 2; 33. Ultrasonic vibrating rod; 34. Pressure sensor 2; 41. Material bearing sealing column; 411. Feeding port; 412. Exhaust port 3; 413 , regenerated catalyst discharge port; 414, gas exhaust valve three; 415, water quenching drain valve; 416, regenerated catalyst discharge valve; 42, electromagnetic heating coil; 43, pressure sensor three; 44, temperature sensor; 45, solid-liquid separator; 5, vacuum waste acid tank; 51, water quenching return liquid port; 52, waste acid drain port; 53, vacuum negative pressure port; 54, exhaust port four; 55, water quenching return liquid valve; 56, waste acid drain valve; 57, vacuum negative pressure valve; 58, gas exhaust valve four; 6, air compressor; 7, vacuum pump; 71, vacuum liquid extraction valve; 8, wastewater sedimentation tank; 91, pipeline one; 92, pipeline two; 93, pipeline three; 94, pipeline four; 95, pipeline nine; 951, water quenching pure water valve; 101, compressed air valve one; 102, compressed air valve two. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0043] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0044] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0045] The existing system for recycling carbon-based catalysts has low recovery rate and poor safety during the recycling process. Therefore, it is particularly important to rationally design and efficiently and safely recycle these carbon-based catalyst resources.

[0046] In order to solve the above-mentioned technical problems, the present application provides a purification and active regeneration system for a Pt group noble metal carbon-based catalyst, which realizes the regeneration rate of the Pt group noble metal carbon-based catalyst by setting an airflow washing and impurity removal kettle, a reagent kettle 2, an ultrasonic deep impurity removal kettle, a vacuum pyrolysis column, a vacuum waste acid tank 5, an air compressor 6, a vacuum pump 7, and a wastewater sedimentation tank 8, and integrating a modular design of multiple purification and regeneration technologies, while also taking into account the technical effects of environmental protection and improving operating efficiency.

[0047] For the convenience of explanation, the following embodiments are described by taking a purification and activity regeneration system of a Pt-family noble metal carbon-based catalyst according to one embodiment of the present application as an example.

[0048] Please refer to Figure 1 , Figure 1 The schematic structural diagram of the purification and active regeneration system of the Pt group noble metal carbon-based catalyst provided in the embodiment of the present application comprises: an airflow washing and impurity removal kettle, a reagent kettle 2 connected to the reagent addition port 111 at the top of the airflow washing and impurity removal kettle through a pipe 91, an ultrasonic deep impurity removal kettle having a material inlet 311 connected to the material outlet 1 at the bottom of the airflow washing and impurity removal kettle, a vacuum pyrolysis column having a feed port 411 connected to the material outlet 2 at the bottom of the ultrasonic deep impurity removal kettle, a water quenching liquid return port 51 connected to the water quenching liquid discharge port of the vacuum pyrolysis column through a pipe 93, an air compressor 6 connected to the airflow washing and impurity removal kettle and the ultrasonic deep impurity removal kettle, a vacuum pump 7 connected to the ultrasonic deep impurity removal kettle and the vacuum waste acid tank 5, and a wastewater sedimentation tank 8 connected to the airflow washing and impurity removal kettle through a pipe 92.

[0049] The airflow washing and impurity removal kettle comprises a kettle body 11, a gas aerator 12 and a drainage filter 13 arranged in the kettle body 11, a pressure sensor 14 arranged on the kettle body 11, and a heat exchange jacket 15 arranged on the outer wall of the kettle body 11;

[0050] The wastewater sedimentation tank 8 is connected to the outlet of the drainage filter 13 of the airflow washing and impurity removal kettle through the pipeline 2 92.

[0051] The airflow washing and impurity removal kettle comprises a kettle body 11, a gas aerator 12 and a drainage filter 13 arranged in the kettle body 11, a pressure sensor 14 arranged on the kettle body 11, and a heat exchange jacket 15 arranged on the outer wall of the kettle body 11;

[0052] The wastewater sedimentation tank 8 is connected to the outlet of the drainage filter 13 of the airflow washing and impurity removal kettle through the pipeline 2 92.

[0053] The top of the kettle body 11 is provided with the reagent adding port 111, the material inlet 112, and the exhaust port 113;

[0054] A material adding valve 114 is arranged on the pipeline connected to the material inlet 112 of the kettle body 11 of the airflow washing and impurity removal kettle, a reagent adding valve 115 is arranged on the pipeline 91 near one end of the airflow washing and impurity removal kettle, and a gas exhaust valve 116 is arranged on the pipeline connected to the exhaust port 113 of the airflow washing and impurity removal kettle; a waste liquid discharge valve 117 is arranged on the pipeline 92 near one end of the airflow washing and impurity removal kettle, and a material discharge valve 118 is arranged at the material outlet of the airflow washing and impurity removal kettle.

[0055] A branch pipe is also provided on the pipeline 91 between the drug adding valve 115 and the drug adding port 111, and a pure water adding valve 16 is provided on the branch pipe.

[0056] The ultrasonic deep impurity removal kettle comprises a kettle body 31, a gas aerator 32 arranged in the kettle body 31, an ultrasonic vibration rod 33 passing through the top of the kettle body 31, and a pressure sensor 34 arranged on the kettle body 31;

[0057] The top of the second kettle body 31 is provided with a second material inlet 311 and a second exhaust port 312;

[0058] A gas exhaust valve 313 is provided on the pipeline connected to the exhaust port 312 of the kettle body 31 of the ultrasonic deep impurity removal kettle, and a material discharge valve 314 is provided at the material outlet 2 of the ultrasonic deep impurity removal kettle.

[0059] The vacuum pyrolysis column includes a material-carrying sealed column 41, an electromagnetic heating coil 42 wound around the outer wall of the material-carrying sealed column 41, a pressure sensor 43 and a temperature sensor 44 arranged on the material-carrying sealed column 41, and a solid-liquid separator 45 arranged in the material-carrying sealed column 41 and close to the bottom of the material-carrying sealed column 41;

[0060] The outlet of the solid-liquid separator 45 of the vacuum pyrolysis column is connected to the waste acid discharge port 52 of the vacuum waste acid tank 5 through a pipeline 94.

[0061] The top of the material-carrying sealed column 41 is provided with a feed port 411 and an exhaust port 412, and the bottom of the material-carrying sealed column 41 is provided with a regenerated catalyst exhaust port 413;

[0062] A gas exhaust valve 3 414 is provided on the pipeline connected to the exhaust port 3 412 of the material-carrying sealing column 41; a water quenching drain valve 415 is provided at the water quenching drain port of the material-carrying sealing column 41, and a regenerated catalyst discharge valve 416 is provided at the regenerated catalyst discharge port 413 of the material-carrying sealing column 41.

[0063] The vacuum waste acid tank 5 is provided with a water quenching liquid return port 51, a waste acid liquid discharge port 52, a vacuum negative pressure port 53, and an exhaust port 54;

[0064] A water quenching return valve 55 is provided on the pipe three 93 near the water quenching return port 51 of the vacuum waste acid tank 5, a waste acid discharge valve 56 is provided on the pipe four 94 near the waste acid discharge port 52 of the vacuum waste acid tank 5, a vacuum negative pressure valve 57 is provided at the vacuum negative pressure port 53 of the vacuum waste acid tank 5, and a gas exhaust valve four 58 is provided on the pipe connected to the exhaust port four 54 of the vacuum waste acid tank 5;

[0065] The pipeline four 94 is provided with a pipeline nine 95; the pipeline nine 95 is provided with a water quenching pure water valve 951.

[0066] The air compressor 6 is connected to the gas aerator 12 in the airflow washing and impurity removal kettle through pipeline 5; the air compressor 6 is connected to the gas aerator 2 32 in the ultrasonic deep impurity removal kettle through pipeline 6.

[0067] The pipeline five is provided with a compressed air valve one 101; the pipeline six is ​​provided with a compressed air valve two 102.

[0068] The vacuum pump 7 is connected to the vacuum port of the ultrasonic deep impurity removal kettle through a pipeline 7; a vacuum liquid extraction valve 71 is provided on the pipeline 7; the vacuum pump 7 is connected to the vacuum negative pressure port 53 of the vacuum waste acid tank 5 through a pipeline.

[0069] A metering pump 21 is provided on the pipe 91 near one end of the medicine kettle 2.

[0070] In this way, by setting up an airflow washing and impurity removal kettle, a reagent kettle 2, an ultrasonic deep impurity removal kettle, a vacuum pyrolysis column, a vacuum waste acid tank 5, an air compressor 6, a vacuum pump 7, and a wastewater sedimentation tank 8, a modular design integrating multiple purification and regeneration technologies not only improves the regeneration rate of the Pt family noble metal carbon-based catalyst, but also takes into account environmental protection and operating efficiency, reduces the safety risks during operation, and has significant technical and economic advantages; and the modular design also makes maintenance and replacement of parts more convenient. Among them, the combined use of the airflow washing and impurity removal kettle and the ultrasonic deep impurity removal kettle can effectively remove the adhered impurities on the surface of the carbon-based catalyst and improve the purity of the catalyst. The use of the vacuum pyrolysis column can perform closed pyrolysis under a certain moisture content, so that the substances adsorbed on the catalyst carrier activated carbon decompose or volatilize, thereby restoring the adsorption capacity of the catalyst and improving its carrier strength. Through the treatment of the wastewater sedimentation tank 8, the wastewater and harmful substances generated during the purification process can be reduced, and the impact on the environment can be reduced.

[0071] The working principle of a purification and active regeneration system of a Pt noble metal carbon-based catalyst provided by the present application is described below: Figure 1 As shown,

[0072] First, open the material adding valve 114 of the airflow washing and impurity removal kettle to add the carbon-based catalyst to be regenerated; after closing the material adding valve 114, open the gas drain valve 116, and open the pure water adding valve 16 to add a specified amount of clean water, then start the air compressor 6, and open the compressed air valve 101 at the same time, the compressed air enters the kettle body 11 through the gas aerator 12, and realizes the gas stirring and washing in the kettle body 11 (the time is controllable); at the same time, the heat exchange jacket 15 also exchanges heat with the kettle body 11; after the carbon-based catalyst in the kettle body 11 has completed the surface impurity removal, open the waste liquid discharge valve 117, close the gas drain valve 116, and make the washing waste water pass through the drainage filter 13 for solid-liquid separation, and then make the liquid enter the waste water sedimentation tank 8 for storage;

[0073] After closing the air compressor 6 and the above-mentioned opened valves, open the reagent adding valve 115, start the metering pump 21 equipped with the reagent kettle 2, and add a specified amount of pickling reagent to the airflow washing and impurity removal kettle; then open the gas emptying valve 116, the material discharge valve 118, the vacuum liquid extraction valve 71 and the vacuum pump 7, so that the material in the airflow washing and impurity removal kettle is transferred to the ultrasonic deep impurity removal kettle through the material inlet 2 311 under negative pressure; after the material transfer is completed, close the vacuum pump 7 and the above-mentioned opened valves; then open the gas emptying valve 2 313 and the compressed air valve 2 102, and start the air compressor 6 at the same time, so that the compressed air enters the kettle through the gas aerator 2 32 The ultrasonic vibration rod 33 starts working to perform ultrasonic vibration pickling and deep impurity removal. After the ultrasonic vibration pickling and deep impurity removal is completed, the ultrasonic vibration rod 33 and the opened valve are closed, and then the material discharge valve 314, the waste acid discharge valve 56 and the vacuum negative pressure valve 57 of the vacuum waste acid tank 5 are opened, and the vacuum pump 7 is started to transfer the material of the ultrasonic deep impurity removal kettle to the material bearing sealing column 41 of the vacuum pyrolysis column through the feed port 411 under negative pressure, and the solid-liquid separation of the washed waste acid and the carbon-based catalyst is achieved under the action of the solid-liquid separator 45, so that the separated The washed waste acid enters the vacuum waste acid tank 5; after all the washed waste acid enters the vacuum waste acid tank 5, the vacuum pump 7 and the above-mentioned activated valve are turned off, and the electromagnetic heating coil 42 wrapped around the outside of the vacuum pyrolysis column is turned on to perform pyrolysis regeneration on the carbon-based catalyst in the material-bearing sealed column 41. After the temperature sensor 44 detects that the specified temperature has been reached and lasts for a certain period of time, the pyrolysis regeneration process is completed; after the pyrolysis regeneration process is completed, the water quenching pure water valve 951 (the control switch of the pure water source) is opened (the valve of the waste acid drain valve 56 is closed at this time) to perform strength modification on the carbon-based catalyst in the vacuum pyrolysis column; after the strength modification of the carbon-based catalyst is completed, the electromagnetic heating coil 42 is turned on to perform pyrolysis regeneration on the carbon-based catalyst in the vacuum pyrolysis column. Close the water quenching pure water valve 951, open the water quenching drain valve 415, the water quenching return valve 55 and the gas exhaust valve four 58, and let the water quenching water flow into the vacuum waste acid tank 5 through the pipeline three 93 after the water quenching is completed; after the above process is completed, open the vacuum pump 7, the vacuum negative pressure valve 57, the waste acid drain valve 56, and the gas exhaust valve three 414, and under the action of the solid-liquid separator 45, the water extract and the carbon-based catalyst are thoroughly separated into solid and liquid, and the separated water quenching liquid is allowed to enter the vacuum waste acid tank 5 from the pipeline four 94. After the separation is completed, close the vacuum pump 7 and the above-mentioned opened valves, and then open the regenerated catalyst discharge valve 416 to discharge the regenerated catalyst, and the whole process is completed.

[0074] Please also read Figure 1According to one or more embodiments of the present application, the purification and active regeneration system of the Pt group noble metal carbon-based catalyst provided by the present application is a complete system composed of an airflow washing and impurity removal kettle, a reagent kettle 2, an ultrasonic deep impurity removal kettle, a vacuum pyrolysis column, a vacuum waste acid tank 5, an air compressor 6, a vacuum pump 7, and a wastewater sedimentation tank 8; the modular design that integrates multiple purification and regeneration technologies not only improves the regeneration rate of the Pt group noble metal carbon-based catalyst, but also takes into account environmental protection and operating efficiency, reduces safety risks during operation, and has significant technical and economic advantages.

[0075] In addition, the combined use of the airflow washing and impurity removal kettle and the ultrasonic deep impurity removal kettle can effectively remove the adhered impurities on the surface of the carbon-based catalyst and improve the purity of the catalyst. The use of the vacuum pyrolysis column can perform closed pyrolysis under a certain moisture content, so that the substances adsorbed on the catalyst carrier activated carbon decompose or volatilize, thereby restoring the adsorption capacity of the catalyst and improving its carrier strength. Through the treatment of the wastewater sedimentation tank 8, the wastewater and harmful substances generated during the purification process can be reduced, reducing the impact on the environment.

[0076] The whole device has a high degree of automation, is easy to operate, runs stably, is safe and reliable, energy-saving and environmentally friendly, effectively reduces manual labor intensity and production costs, and has good energy-saving and emission reduction effects.

[0077] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and exerting the same effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the main purpose of the present application, various modifications that can be thought of by those skilled in the art to the embodiments and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. A purification and active regeneration system for a Pt noble metal carbon-based catalyst, characterized in that: include: An airflow washing and impurity removal kettle, a reagent kettle connected to the reagent feeding port of the airflow washing and impurity removal kettle through a pipeline one, an ultrasonic deep impurity removal kettle connected with a material inlet two and a material outlet one of the airflow washing and impurity removal kettle, a vacuum pyrolysis column connected with a feeding port and a material outlet two of the ultrasonic deep impurity removal kettle, and a vacuum waste acid tank connected with a water quenching liquid return port and a water quenching liquid discharge port of the vacuum pyrolysis column through a pipeline three.

2. The purification and active regeneration system of the Pt noble metal carbon-based catalyst according to claim 1, characterized in that: It also includes: an air compressor connected to the airflow washing and impurity removal kettle and the ultrasonic deep impurity removal kettle, a vacuum pump connected to the ultrasonic deep impurity removal kettle and the vacuum waste acid tank, and a wastewater sedimentation tank connected to the airflow washing and impurity removal kettle through pipeline 2.

3. The purification and active regeneration system of the Pt noble metal carbon-based catalyst according to claim 2, characterized in that: The airflow washing and impurity removal kettle comprises a kettle body, a gas aerator and a drainage filter arranged in the kettle body, a pressure sensor arranged on the kettle body, and a heat exchange jacket arranged on the outer wall of the kettle body. The wastewater sedimentation tank is connected to the outlet of the drainage filter 1 of the airflow washing and impurity removal kettle through the pipeline 2.

4. The purification and active regeneration system of the Pt noble metal carbon-based catalyst according to claim 3, characterized in that: The ultrasonic deep impurity removal kettle comprises a kettle body 2, a gas aerator 2 arranged in the kettle body 2, an ultrasonic vibration rod penetrating the top of the kettle body 2, and a pressure sensor 2 arranged on the kettle body 2; The top of the second kettle body is provided with a second material inlet and a second exhaust port; A gas exhaust valve 2 is arranged on the pipeline connected to the exhaust port 2 of the kettle body 2 of the ultrasonic deep impurity removal kettle, and a material discharge valve 2 is arranged at the material outlet 2 of the ultrasonic deep impurity removal kettle.

5. The purification and active regeneration system of the Pt noble metal carbon-based catalyst according to claim 1, characterized in that: The vacuum pyrolysis column includes a material-carrying sealed column, an electromagnetic heating coil wound around the outer wall of the material-carrying sealed column, a pressure sensor and a temperature sensor arranged on the material-carrying sealed column, and a solid-liquid separator arranged in the material-carrying sealed column; The outlet of the solid-liquid separator of the vacuum pyrolysis column is connected to the waste acid discharge port of the vacuum waste acid tank through a pipeline 4.

6. The purification and active regeneration system of the Pt noble metal carbon-based catalyst according to claim 5, characterized in that: The vacuum waste acid tank is provided with a water quenching liquid return port, a waste acid liquid discharge port, a vacuum negative pressure port, and an exhaust port; A water quenching return valve is provided on the pipe three near the water quenching return port of the vacuum waste acid tank, a waste acid discharge valve is provided on the pipe four near the waste acid discharge port of the vacuum waste acid tank, a vacuum negative pressure valve is provided at the vacuum negative pressure port of the vacuum waste acid tank, and a gas exhaust valve four is provided on the pipe connected to the exhaust port four of the vacuum waste acid tank; The pipeline 4 is provided with a pipeline 9; the pipeline 9 is provided with a water quenching pure water valve.

7. The purification and active regeneration system of the Pt noble metal carbon-based catalyst according to claim 3, characterized in that: The top of the kettle body is provided with the reagent adding port, the material inlet 1, and the exhaust port 1; A material adding valve is arranged on the pipeline connected to the material inlet 1 of the kettle body 1 of the airflow washing and impurity removal kettle, a reagent adding valve is arranged on the pipeline 1 near one end of the airflow washing and impurity removal kettle, a gas exhaust valve 1 is arranged on the pipeline connected to the exhaust port 1 of the airflow washing and impurity removal kettle; a waste liquid discharge valve 1 is arranged on the pipeline 2 near one end of the airflow washing and impurity removal kettle, and a material discharge valve 1 is arranged at the material outlet of the airflow washing and impurity removal kettle.

8. The purification and active regeneration system of the Pt noble metal carbon-based catalyst according to claim 5, characterized in that: The top of the material-carrying sealed column is provided with a feed port and an exhaust port, and the bottom of the material-carrying sealed column is provided with a regenerated catalyst discharge port; A gas exhaust valve three is arranged on the pipeline connected to the exhaust port three of the material-carrying sealing column; a water quenching drain valve is arranged at the water quenching drain port of the material-carrying sealing column, and a regenerated catalyst discharge valve is arranged at the regenerated catalyst discharge port of the material-carrying sealing column.

9. The purification and active regeneration system of the Pt noble metal carbon-based catalyst according to claim 3, characterized in that: A metering pump is arranged on the pipeline one near one end of the medicine kettle.

10. The purification and active regeneration system of the Pt noble metal carbon-based catalyst according to claim 9, characterized in that: The air compressor is connected to the gas aerator 1 in the airflow washing and impurity removal kettle through pipeline 5; the air compressor is connected to the gas aerator 2 in the ultrasonic deep impurity removal kettle through pipeline 6; The pipeline 5 is provided with a compressed air valve 1; the pipeline 6 is provided with a compressed air valve 2; The vacuum pump is connected to the vacuum port of the ultrasonic deep impurity removal kettle through pipeline seven; a vacuum liquid extraction valve is arranged on pipeline seven; the vacuum pump is connected to the vacuum negative pressure port of the vacuum waste acid tank through a pipeline.

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