478 results about "Catalyst regeneration" patented technology

A reactor system includes a reactor that treats a lipid feedstock using a metal oxide catalyst to produce a treated stream comprising a bio-oil. The reactor system includes a catalyst zone in which the metal oxide catalyst reacts with the lipid feedstock to produce the treated stream. The reactor system operates in a reaction mode, during which the lipid feedstock flows in a downward direction through the metal oxide catalyst to produce the treated stream. Alternately, the reactor also operates in a regeneration mode, during which coke is burned from the metal oxide catalyst thereby regenerating the metal oxide catalyst. In one aspect, a regeneration mode pressure is less than a reaction mode pressure within the reactor to fluidize the catalyst.

A process for upgrading plastic derived oil includes contacting the plastic derived oil with a mixed catalyst in a first reactor, where the mixed catalyst includes a decontamination catalyst and a cracking catalyst different from the decontamination catalyst. The first reactor reduces concentrations of halogen-containing compounds in the plastic derived oil. The process includes passing the first reactor effluent to a second reactor and contacting the first reactor effluent with the cracking catalyst to produce a second effluent comprising light olefins and naphtha range hydrocarbons. The process includes separating used mixed catalyst from the first reactor to produce a used decontamination catalyst and a second used cracking catalyst, and regenerating the decontamination catalyst and cracking catalyst in separate regenerators to reduce exposure of the cracking catalyst to halogen-containing compounds produced during regeneration of the used decontamination catalyst.

A process for upgrading plastic derived oil includes contacting a plastic derived oil stream with a decontamination catalyst in a first reactor, separating a first reactor effluent from a used decontamination catalyst, passing the first reactor effluent to a second reactor downstream of the first reactor, contacting the first reactor effluent with a cracking catalyst in the second reactor, and separating a second reactor effluent from a used cracking catalyst. The cracking catalyst is different from the decontamination catalyst. The process further includes regenerating the used decontamination catalyst in a decontamination catalyst regenerator to produce regenerated decontamination catalyst, and regenerating the used cracking catalyst in a cracking catalyst regenerator separate from the decontamination catalyst regenerator to produce regenerated cracking catalyst. Regenerating the used cracking catalyst separately reduces deactivation of the cracking catalyst by halogen-containing compounds produced during regeneration of the decontamination catalyst.

The invention belongs to the field of catalyst regeneration, and provides a regeneration method of a platinum-based low-carbon alkane dehydrogenation catalyst, which specifically comprises the following steps of: simultaneously carrying out charking and oxychlorination operations before a deactivated catalyst reaches the highest roasting temperature, and adding agent pouring treatment in the regeneration process, and measures for protecting the dispersity of platinum on the catalyst are added in the reaction heating process of the catalyst and after the application is finished, so that the service life of the catalyst is prolonged. According to the regeneration method, the regeneration step of the deactivated catalyst is simplified, chlorine injection, water injection, vulcanization and other operations are not needed, charking, oxychlorination and different reduction depths caused by different positions of the catalyst are avoided, the performance uniformity of the catalyst and the redispersity of platinum are improved, and the regeneration efficiency is improved. The problems that in an existing regeneration method, the dispersity of active components is low, the number of repeated regeneration times is small, and the performance of the catalyst is reduced are solved, the regenerated catalyst obtained through the regeneration method is not lower than that of a fresh catalyst in the aspects of catalyst conversion rate, selectivity and stability, and the regeneration effect is remarkable.

The invention relates to the field of biomass energy conversion, in particular to a multi-mode intelligent purification system and method for a biomass gasifier, and the system integrates five modules of self-adaptive multi-field coupling tar cracking, multi-dimensional real-time intelligent monitoring, in-situ nano catalyst regeneration, energy cascade recovery and digital twin driving. According to the system, through the synergistic effect of an electric field, ultrasonic waves, catalysis and a temperature gradient, the tar removal efficiency is remarkably improved to 99.5% or above, the content of tar at an outlet is lower than 5 mg / Nm < 3 >, an intelligent monitoring module collects technological parameters in real time, and precise control is ensured; the catalyst regeneration module performs in-situ regeneration on a catalyst based on monitoring data to maintain efficient operation of the system; the energy recovery module utilizes heat energy in a gradient mode and optimizes energy configuration, the digital twin module constructs a system digital model, optimization and predictive maintenance of real-time data driving are achieved, and the system achieves innovation breakthrough of intelligence and energy conservation while improving the biomass gasification purification efficiency.

The utility model discloses low-temperature denitration catalyst regeneration equipment, and relates to the technical field of denitration catalyst regeneration, the low-temperature denitration catalyst regeneration equipment comprises a treatment box and a soaking box, a water flow driving mechanism is arranged at the bottom of the treatment box and is used for driving water flow to separate dust particles which are stubborn in adhesion; according to the low-temperature denitration catalyst regeneration equipment, three-dimensional circulating vertical water flow is formed through the water flow driving mechanism, and the low-temperature denitration catalyst regeneration equipment is formed by combining the chemical action of a cleaning agent; according to the low-temperature denitration catalyst regeneration cleaning device, double cleaning of physical washing and chemical dissolution of stubborn dust particles on the surface and in pores of a low-temperature denitration catalyst body is achieved, the problem that dust is difficult to separate in traditional soaking cleaning is effectively solved, and the regeneration separation effect is remarkably improved; accurate movement of the low-temperature denitration catalyst body in the horizontal direction and the vertical direction is achieved, and manual intervention is reduced through automatic operation.

The utility model discloses a regenerator for esterification reaction catalyst, which relates to the technical field of catalyst regeneration, and comprises a bracket, a reaction vessel arranged on the bracket, and a steam heating jacket sleeved on the outside of a sealing groove, wherein a sampling port is arranged on the reaction vessel, a gate valve is arranged on the sampling port, a feed port of the gate valve is connected with the reaction vessel through the sampling port, a connecting pipe is arranged on the gate valve, a sampling tank is threadedly connected on the connecting pipe, the sampling tank is connected with the discharge port of the gate valve through the connecting pipe, and a sealing component is arranged between the sampling tank and the connecting pipe. The utility model can make it unnecessary to increase the pressure in the reaction vessel or to cool down the steam heating jacket during sampling, and at the same time, the closing of the gate valve can ensure the sealing between the reaction vessel and the outside world, so that sampling can be made more convenient, quick and easy to operate, and the purpose of multiple sealing between the sampling tank and the reaction vessel is achieved, so as to ensure the normal and orderly progress of the regeneration work.

The invention discloses a method for efficiently preparing 1, 1, 2, 3-tetrachloropropene, which comprises the following steps: by taking 1, 1, 2, 2, 3-pentachloropropane / 1, 1, 1, 2, 3-pentachloropropane as a raw material, carrying out dehydrochlorination reaction in a tank reactor under the action of a composite catalyst to prepare the 1, 1, 2, 3-tetrachloropropene. Compared with the traditional dehydrochlorination of alkali liquor, the method has the advantages of less generation of three wastes, simple process operation and easiness in industrial implementation. The prepared composite catalyst can be suitable for pentachloropropane of different structures as a raw material, the catalyst compatibility is high, the application scene is wide, the composite catalyst is good in catalytic activity and high in selectivity, and the selectivity of tetrachloropropene is 95% or above and can reach 99% to the maximum. Meanwhile, the composite catalyst is good in regeneration performance, the inactivated catalyst is easy to regenerate, and the catalytic activity is not reduced after regeneration; the composite catalyst material is easy to obtain and low in price, the production cost can be greatly saved, and industrial production is facilitated.

The invention relates to a combustion optimization and cryogenic separation-based carbon dioxide enrichment and hydrogen production synergy process for a combined device, which is characterized in that regeneration of a spent catalyst in a catalytic cracking device is changed into pure oxygen incomplete combustion, and circulating carbon dioxide is used for stabilizing fluidization and controlling tail combustion. And after the regenerated flue gas is subjected to deep purification and cryogenic separation, the part rich in carbon monoxide is fed into a medium-temperature change reactor of the steam hydrocarbon reforming device for hydrogen production, so that resource upgrading of catalytic coke is realized. And compressing and cooling the part rich in carbon dioxide to obtain about 98% of liquid phase product for subsequent application. According to the catalytic cracking device, only the regenerator needs to be adjusted, the deep purification and compression cryogenic separation unit is additionally arranged, the hydrogen production device can improve the treatment capacity of the medium-temperature change reactor, implementation is convenient, and the catalytic cracking device is suitable for new and old devices. The invention further relates to a system for carbon dioxide enrichment and hydrogen production synergy of the integrated device based on combustion optimization and cryogenic separation.

The invention discloses a regeneration method of a metal modified mordenite catalyst used in a methanol amination reaction, and belongs to the technical field of catalyst regeneration. The catalyst regeneration method comprises the following steps: firstly, removing non-framework aluminum in a catalyst by using an organic acid solution, and then washing by using an organic solvent to remove residual organic acid and part of carbon deposit after acid treatment; oxidizing carbon deposit on the surface of the catalyst by adopting a hydrogen peroxide solution and inert mixed gas containing ozone; and finally, reducing active metal components in the catalyst by adopting hydrogen. According to the regeneration method, carbon deposit on the surface of the catalyst can be well and effectively removed under the low-temperature condition, generation of non-framework aluminum on the surface of mordenite in the regeneration process is reduced, the service life of the catalyst is effectively prolonged, and the regenerated catalyst can keep good reaction performance in the methanol amination reaction.

The invention relates to the technical field of petrochemical industry, and discloses a dehydrogenation catalyst regeneration method, which comprises: (1) carrying out first charring on a spent catalyst in a first-stage charring zone, and carrying out second charring on the spent catalyst in a second-stage charring zone; (2) enabling the product after the second charring to pass through a drying zone, an oxychlorination zone and a cooling zone to obtain a regenerated catalyst; wherein gases discharged from the first-section charring area, the second-section charring area and the oxychlorination area are respectively and independently circulated. According to the method, the drying area is arranged below the scorching area, so that independent circulation of gases in the scorching area and the oxychlorination area is realized, the noble metal dispersity of the low-carbon alkane dehydrogenation catalyst can be improved, and the regeneration effect of the catalyst is improved.

The present invention relates to a temperature regulation device and a temperature regulation method for denitration catalyst regeneration. The device includes a first furnace unit, a second furnace unit and a temperature regulation component. The method includes: putting a catalyst into the first furnace unit, closing the first pipeline, heating the first furnace unit to a preset temperature threshold; opening the first pipeline and turning on the induced draft fan, adjusting the rotational speed of the induced draft fan to control the cooling rate in the first furnace unit within a first preset speed range. When the temperature difference between the first furnace unit and the second furnace unit is within a preset temperature difference range, close the first pipeline, and connect the first furnace unit to the atmosphere, and adjust the rotational speed of the induced draft fan to control the cooling rate in the first furnace unit within a second preset speed range. When the temperature in the first furnace unit reaches room temperature, turn off the induced draft fan and take out the catalyst. The device and method provided by the present invention not only control the first furnace unit and the second furnace unit to alternately heat up and cool down, but also can accurately adjust the heating / cooling rate, and also utilize the waste heat in the furnace to save energy.

The invention relates to the technical field of synthesis of organic compounds, and discloses a dibenzoylmethane preparation method, which comprises the following steps: preparation of a functionalized ionic liquid, preparation of a deep eutectic solvent, construction of a composite system, implementation of a condensation reaction, regeneration of catalytic active sites, pH adjustment, crystal separation and the like. According to the method, a temperature-responsive two-phase system formed by the functionalized ionic liquid and the deep eutectic solvent is combined with a catalyst regeneration process and a pH regulation crystallization separation technology, so that the greenization, high efficiency and integration of the dibenzoylmethane synthesis process are realized, the product purity and yield are remarkably improved, and the environmental pollution and the production cost are reduced.

The invention discloses an internal circulating fluidized bed and method for calcium cycle catalytic methane dry reforming, the internal circulating fluidized bed comprises an outer reactor and an inner reactor, the outer reactor sleeves the inner reactor, and the inner part of the inner reactor is used as a carbon capture zone for carbon dioxide adsorption reaction; an area between the inner reactor and the outer reactor is used as a carbon conversion area for methane dry reforming and catalyst regeneration reaction; the bottoms of the carbon capture area and the carbon conversion area are communicated through a circulating feed port, a discharge port in the top of the carbon capture area is connected with a gas-solid separator, and a solid outlet of the gas-solid separator is connected with the carbon conversion area; the bottom of the inner reactor is provided with a waste gas inlet and an air distribution plate, the bottom of the side wall of the outer reactor is provided with a raw material gas inlet, and the top of the outer reactor is provided with a synthesis gas outlet and a material supplementing port; by adopting the internal circulating fluidized bed technology, the problem of discontinuous reaction of a fixed bed reactor is solved, the continuous and stable proceeding of the calcium circulating methane dry reforming reaction is realized in the same reactor, and the production efficiency is remarkably improved.

A process for upgrading plastic derived oil includes contacting the plastic derived oil with a mixed catalyst in a first reactor, where the mixed catalyst includes a decontamination catalyst and a cracking catalyst different from the decontamination catalyst. The first reactor reduces concentrations of halogen-containing compounds in the plastic derived oil. The process includes passing the first reactor effluent to a second reactor and contacting the first reactor effluent with the cracking catalyst to produce a second effluent comprising light olefins and naphtha range hydrocarbons. The process includes separating used mixed catalyst from the first reactor to produce a used decontamination catalyst and a second used cracking catalyst, and regenerating the decontamination catalyst and cracking catalyst in separate regenerators to reduce exposure of the cracking catalyst to halogen-containing compounds produced during regeneration of the used decontamination catalyst.

The invention discloses a production system and method for preparing high-carbon aldehyde through carbonyl synthesis of high-carbon olefin. The system comprises a reaction device, a separation device, an aldehyde condensing device, a product tank, a polymer supplementing unit and a recycling unit, the polymer supplementing unit is connected with the separating device; the cyclic utilization unit comprises an extraction separation device connected with a liquid phase outlet of the separation device, a polymer recovery device connected with a water phase outlet of the extraction separation device, and a catalyst regeneration device connected with an organic phase outlet of the extraction separation device. According to the method, a carbonyl metal catalytic system is adopted to catalyze reaction of high-carbon olefin and synthesis gas, and heating separation of reaction liquid is performed by introducing an organic polymer protection catalyst; the separated catalyst liquid phase is subjected to water extraction separation and post-treatment, and the organic polymer and the catalyst are recycled. Recycling of the catalyst and efficient separation of the product are realized, and the stability of the catalyst separation section is enhanced.

The present invention relates to a production process for synthesizing hexamethylenediamine by catalytic hydrogenation of adiponitrile. The process comprises the following steps: 1) preparing a catalyst precursor; 2) calcining the catalyst precursor to obtain a catalyst; 3) catalytic hydrogenation of adiponitrile under the condition of the catalyst to synthesize crude hexamethylenediamine; 4) separating hexamethylenediamine from the discharge of a fluidized bed reactor containing crude hexamethylenediamine. The present invention uses Ni(NO3)2 and / or Mg(NO3)2 as main raw materials, doped with transition metal oxides, and then performs ultrasonic adsorption using Al2O3 as a catalyst carrier to load Ni(NO3)2 and / or Mg(NO3)2 and transition metal oxides on Al2O3, and obtains a catalyst through high-temperature calcination. The doping of transition metal oxides can improve the basicity of the catalyst, eliminating the need to add a strong basic co-catalyst in the catalytic reaction stage, reducing by-product formation. Moreover, it increases the specific surface area of the catalyst, thereby reducing the adsorption of the reaction product hexamethylenediamine on the catalyst, extending the service life of the catalyst, and saving the energy consumption for catalyst regeneration.

The invention discloses a catalytic filter material loaded with a Mn-CoOx composite metal oxide, a preparation method of the catalytic filter material and a regeneration method after sulfur poisoning, and belongs to the technical field of industrial tail gas denitration. According to the catalytic filter material prepared by the invention, through a complete technical route of surface functional modification of polydopamine, hydrothermal in-situ growth of a manganese-cobalt catalyst and activation by dipping in hydrogen peroxide, the dust removal function of the catalytic filter material used as the filter material is reserved, and the originally inert polymer fiber surface is activated, so that the catalyst is uniformly dispersed on the surface of the filter material and is firmly loaded on the surface of the filter material. The catalytic filter material which is poisoned and inactivated by sulfur dioxide is soaked in the hydrogen peroxide solution, so that the catalyst is regenerated, the method has the advantages of greenness, simplicity, convenience, low cost and the like, and the service life of the catalytic filter material is effectively prolonged. In conclusion, the catalytic filter material prepared by the invention is high in denitration rate, strong in combination firmness, good in stability, renewable after inactivation, green and low in cost, and has important application value in the technical field of dust removal and denitration.

A catalyst regeneration gas loop is operated in a heat exchanger decoking mode. A regeneration gas is diverted away from a burn zone of the catalyst regeneration gas loop and to a heat exchanger, where coke deposits are disposed on a surface of the heat exchanger. The regeneration gas is prevented from flowing to an oxychlorination / calcination zone of the catalyst regeneration gas loop. Within the heat exchanger, the coke deposits are combusted with oxygen of the regeneration gas, thereby removing the coke deposits from the surface of the heat exchanger and producing carbon dioxide. Oxygen is replenished to the regeneration gas. The regeneration gas is recycled to the heat exchanger.

The invention relates to the technical field of carbon dioxide separation, and discloses a method and a device for capturing and fixing carbon dioxide in ship tail gas. The method comprises the following steps: introducing seawater, an amine catalyst and ship tail gas into a CO2 trapping tower to complete CO2 absorption reaction, and discharging decarburized tail gas and a mixed solution I; introducing the mixed solution I into a CO2 immobilization reactor, carrying out solid-liquid separation after completing a CO2 immobilization precipitation reaction, and discharging a CO2 immobilization product and a mixed solution II; the mixed solution II is introduced into a catalyst regenerator, after a catalyst regeneration reaction is completed, solid-liquid separation is carried out, a CO2 fixed product and a mixed solution III are discharged, and the mixed solution III is concentrated and reused in S1. By adopting the method disclosed by the invention, the regeneration energy consumption of the amine catalyst can be reduced, and the CO2 is directly fixed to form a solid-phase product after being captured, so that the subsequent processes of compressing, liquefying and storing the CO2 in a storage tank can be omitted, and the occupied area of the device is reduced.

The invention provides a catalyst regeneration energy recovery power device, and belongs to the technical field of thermodynamics and thermodynamic. An air channel outside is communicated with the charring-regeneration system through a heat source regenerator, and the charring-regeneration system is further provided with a smoke channel which is communicated with the outside through a heat source heat exchanger and the heat source regenerator. The compressor is provided with a first steam channel communicated with the low-temperature expansion machine through the heat regenerator, the low-temperature expansion machine is communicated with the evaporator through a low-pressure steam channel, the compressor is communicated with the heat source heat exchanger through a second steam channel, and the condenser is communicated with the heat source heat exchanger through the booster pump and the evaporator. The heat source heat exchanger further communicates with a high-temperature expansion machine through a steam channel, the high-temperature expansion machine further communicates with an evaporator through a low-pressure steam channel and a heat regenerator, and the evaporator further communicates with a compressor and a condenser through a low-pressure steam channel. The condenser further communicates with the outside through a cooling medium channel, the low-temperature expansion machine and the high-temperature expansion machine are connected with the compressor and transmit power, and the catalyst regeneration energy recovery power device is formed.

The present invention provides a catalyst regeneration apparatus and a catalyst regeneration method that can regenerate a degraded catalyst while suppressing a decrease in production efficiency during the production of a predetermined product. [Solution] A catalyst regeneration device for a reactor 3 that produces a predetermined product by catalytic action of catalysts in each reaction tube 2 using a plurality of reaction tubes 2, each filled with catalyst C, while continuing to introduce the raw material gas, the device comprises a catalyst degradation detection unit for detecting whether or not the catalyst C in each of the plurality of reaction tubes 2 has deteriorated, a regeneration gas supply unit 6 capable of supplying a predetermined regeneration gas to each reaction tube 2 for regenerating the deteriorated catalyst C, and a control unit 7 that controls the regeneration gas supply unit to supply regeneration gas to the reaction tube 2 having a catalyst C that has been detected to have deteriorated based on the detection results from the catalyst degradation detection unit.

The invention relates to the technical field of hydrogen production through methane cracking, in particular to a sea urchin-shaped composite catalyst, a preparation method thereof and application of the sea urchin-shaped composite catalyst in hydrogen production through methane cracking. The obtained sea-urchin-shaped composite catalyst has a sea-urchin-shaped appearance, can efficiently catalyze methane cracking to produce hydrogen, simultaneously captures CO2 produced by vapour gasification carbon deposition in a catalyst regeneration process to generate CaCO3, promotes the gasification hydrogen production of the carbon deposition and strengthens the removal effect of the carbon deposition, and the generated CaCO3 can also be converted into CO in situ, so that the catalyst has a good application prospect. The obtained catalyst has good anti-sintering performance and excellent recycling performance.

The utility model provides a kind of cleaning device for flue gas denitration catalyst regeneration, it is related to catalyst cleaning technical field, when using, as shown in Figure Three, multiple ventilation type high pressure gas blowing components are evenly arranged in the inside of cleaning pool main body, and multiple gas blowing ports are evenly arranged on the surface of the hollow blast pipe in the inside, after filling cleaning fluid in the inside of cleaning pool main body, as shown in Figure Two, ventilation type high pressure gas blowing component is blown by high pressure gas blowing pipe at both ends simultaneously, so that the gas blowing amount of the gas blowing port on the surface of each hollow blast pipe is consistent, so that the cleaning fluid in the inside is rapidly bubbled, so that the porous denitration catalyst placed on the upper end of support isolation component is efficiently cleaned, and the cleaning fluid is driven by ventilation type high pressure gas blowing component to rapidly clean the nitration agent in the inside of porous denitration catalyst by rapid bubbling, and the cleaning efficiency is increased.

The present application relates to the technical field of catalyst regeneration, and discloses a regeneration method of deactivated denitration catalysts. The regeneration method comprises the following steps: (1) performing at least one heat treatment on the deactivated denitration catalyst monomer; (2) placing the deactivated denitration catalyst monomer after heat treatment in an electrolyte solution for electrochemical treatment, and then performing rinsing; (3) placing the deactivated denitration catalyst monomer after rinsing in a mechanical reinforcement solution and an active component supplement solution in sequence for impregnation; and (4) performing oxidation calcination on the deactivated denitration catalyst monomer after impregnation, and then performing reduction. The method can perform overall regeneration on the deactivated denitration catalysts caused by metal elements such as Fe, Pb, Cu and As, organic matters such as COD, and hydrogen sulfate ammonium type miscellaneous salts, the regenerated denitration catalyst obtained can maintain the integrity of the structure, has higher mechanical strength and catalytic activity, and can be directly put into use.

The invention discloses a persulfate oxidation-based fixed bed catalysis high-salt organic wastewater treatment device and a persulfate oxidation-based fixed bed catalysis high-salt organic wastewater treatment process. The fixed bed catalysis high-salt organic wastewater treatment device comprises a pretreatment system, a liquid-solid catalytic reaction system, a reverse osmosis system and a catalyst regeneration and treatment system, and the liquid-solid catalytic reaction system comprises a primary filtration and adsorption unit, a primary catalytic oxidation unit, a secondary catalytic oxidation unit and a secondary adsorption and filtration unit. A baffle plate is arranged between every two units, so that the turbulence of wastewater is enhanced, and the liquid-solid mass transfer efficiency is improved. The treatment device disclosed by the invention has the advantages of continuous operation, salt interference resistance, low operation cost and the like, can realize efficient removal of the high-salt organic wastewater, and is suitable for treatment and recycling of the high-salt organic wastewater in the industries of coal chemical industry, pharmacy, printing and dyeing and the like.

A fluidized catalytic cracking unit system includes: a fluidized catalytic cracking unit assembly including a first catalyst regenerator and a cracking unit, the cracking unit configured to output spent catalyst to the first catalyst regenerator; and a reformer-electrolyzer-purifier assembly comprising a reformer-electrolyzer-purifier cell, the reformer-electrolyzer-purifier cell comprising an anode section and a cathode section.

The present disclosure relates to aromatization of hydrocarbons with an aromatization catalyst, including methods of aromatization using a continuous catalyst regeneration reformer.

The application discloses the technical field of waste gas purification catalyst regeneration, and discloses a regeneration process of a low-temperature SCR denitration catalyst; the process comprises the following steps: after the deactivated catalyst is cleaned through ultrasonic cleaning, the deactivated catalyst is sequentially immersed in a chemical activation liquid and an oxidation treatment liquid for activation and oxidation treatment, then the deactivated catalyst is immersed in a water dispersion liquid containing tungsten-silicon heteropoly acid-zirconium titanium composite oxide core-shell structure material and polyvinylpyrrolidone, vacuum-assisted impregnation, drying and gradient temperature heat treatment are carried out, and a regenerated catalyst is obtained. The core-shell structure material is prepared by the following steps: synthesizing a titanium zirconium composite oxide carrier through a sol-gel method, loading cerium manganese active components through a coprecipitation method, modifying silicotungstic acid through a layer-by-layer self-assembly technology and surface silanization modification. The regenerated catalyst has the advantages of significant improvement in sulfur resistance and alkali metal poisoning resistance, simple process operation, low energy consumption and suitability for industrial application.

The utility model discloses a benzene hydrogenation catalyst regeneration mixing separation system which comprises a device body, a filter screen is fixedly installed in the device body, a threaded rod is rotatably installed above the filter screen, a movable block is connected to the threaded rod in a threaded screwing mode, and a cleaning scraper is fixedly installed on the lower surface of the movable block. The surface of the cleaning scraper is in contact with the surface of the filter screen, and the cleaning scraper is used for cleaning solid impurities on the filter screen; according to the filter screen cleaning device, the threaded rod is rotationally installed on the filter screen and connected with other driving devices, so that the threaded rod rotates, when the threaded rod rotates, the movable block moves in the horizontal direction, and the cleaning scraping plate is fixedly installed on the lower surface of the movable block, so that the cleaning efficiency is improved. And when the moving block horizontally moves, the cleaning scraping plate is driven to move, so that the cleaning scraping plate can clean solid impurities on the filter screen, and the situation that the filter screen is blocked, and consequently the flowing speed of liquid becomes slow is avoided.