294 results about "Catalyst regeneration" patented technology

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.

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.

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 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 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 invention discloses an SCR (Selective Catalytic Reduction) denitration catalyst regeneration method which comprises the following steps: carrying out cleaning and arsenic removal on an arsenic-poisoned SCR denitration catalyst, and regenerating to obtain a regenerated catalyst; preparing a mixed impregnation liquid containing a water repellent agent, polypropylene carbonate and an organic solvent; adhering the mixed impregnation liquid to the surface of the regenerated catalyst and immersing the mixed impregnation liquid into channels of the regenerated catalyst by using a vacuum pressure impregnation process; drying to remove the organic solvent, and curing the poly (propylene carbonate) on the surface and in pores of the regenerated catalyst; a heat treatment is performed to remove the poly (propylene carbonate) and induce chemical grafting of the hydrophobing agent to the catalyst to form a hydrophobic network. The hydrophobic agent is introduced into the surface and pore channels of the arsenic-removed catalyst to construct a hydrophobic network, so that the hydrophobicity of the regenerated catalyst is improved.

The invention relates to the technical field of denitration catalyst regeneration, in particular to a preparation method of a regenerated denitration catalyst based on a reconstructed bulk phase carrier. The preparation method comprises the following steps: carrying out ultrasonic treatment on the waste catalyst by using an ethylenediamine tetraacetic acid-hydrofluoric acid mixed solution to realize targeted detoxification; carrying out hydrothermal reaction on the detoxified carrier, titanium sol, cerous nitrate and zirconium nitrate, and roasting with nitrogen to complete bulk phase reconstruction; carrying out microwave-assisted gradient loading on ammonium paratungstate and an ammonium metavanadate-oxalic acid solution on the reconstructed carrier to obtain a precursor; and roasting and activating the precursor in a gradient atmosphere to obtain the regenerated catalyst. The catalyst prepared by the invention has high denitration efficiency, excellent sulfur poisoning resistance stability, good circulation performance and long service life, can realize efficient regeneration of the waste vanadium-titanium-based denitration catalyst, is suitable for the field of industrial flue gas denitration, and has significant application value.

The invention discloses an on-line regeneration method of a copper-based methanol reforming hydrogen production catalyst, which belongs to the technical field of catalyst regeneration, and is characterized by comprising the following steps: directly adding a certain proportion of oxygen-containing gas into feed gas of a reactor in a methanol reforming hydrogen production reaction process under the conditions of not changing the operation temperature and not stopping raw material supply; oxygen-containing gas is mixed with methanol and water vapor and then enters a catalyst bed layer, and after online treatment is carried out for a period of time, supply of oxygen is stopped, so that online regeneration of catalyst activity can be completed; according to the method, the regeneration can be completed by directly introducing oxygen in the reaction process without shutdown, cooling or reaction atmosphere switching, so that the operation process is greatly simplified, and the production efficiency is improved.

This invention belongs to the field of catalytic reaction technology, specifically disclosing a Fischer-Tropsch synthesis catalyst regeneration and carbon dioxide co-production reactor and its co-production process. The reactor includes a Fischer-Tropsch synthesis fixed-bed reactor, a carbon monoxide conversion reaction unit, and a tail gas discharge unit. The Fischer-Tropsch synthesis fixed-bed reactor is filled with a Fischer-Tropsch synthesis catalyst for the Fischer-Tropsch synthesis reaction and catalyst carbon deposition and char regeneration. The carbon monoxide conversion reaction unit is located downstream of the Fischer-Tropsch synthesis fixed-bed reactor and converts the carbon monoxide generated during char regeneration into carbon dioxide. The tail gas discharge unit outputs carbon dioxide-rich gas and removes residual oxygen from the tail gas. By performing in-situ conversion of carbon monoxide during regeneration, this invention can significantly increase the volume fraction of carbon dioxide in the regenerated tail gas and provide a stable feedstock for the downstream carbon dioxide hydrogenation to methanol reaction, thereby achieving synergy between catalyst regeneration and efficient utilization of carbon resources.

The invention provides a method and system for continuously preparing trifluoroiodomethane, and the method comprises the following steps in the same reactor: S1, inputting trifluoromethane, iodine vapor and air into the reactor, and reacting under the action of a catalyst to prepare trifluoroiodomethane; s2, when the reduction amplitude of the reaction yield relative to the initial reaction yield reaches a set threshold value, stopping inputting trifluoromethane and iodine vapor into the reactor, and continuously introducing air to regenerate the catalyst; and S3, after the regeneration of the catalyst is completed, repeatedly executing the steps S1 to S2. The preparation process of the mesoporous carrier used by the catalyst comprises the following steps: dispersing nano SiO2 spheres in a magnesium acetate or aluminum acetate solution, then adding an NH4F solution, and reacting under a stirring condition to obtain a mesoporous carrier precursor; and treating the mesoporous carrier precursor by adopting a solution etching method. According to the method for continuously preparing trifluoroiodomethane, the service life of the catalyst is long, the technological process is simple and efficient, and the regeneration difficulty of the catalyst is reduced.

The utility model relates to the technical field of ash removal machines, in particular to an ash removal machine for regeneration of a denitration catalyst, which comprises a box body, four corners of the inner surface of the box body are connected with supporting springs, the top ends of the supporting springs are connected with a placing table, two sides of the placing table are connected with vibrators, two sides of the inner surface of the box body are provided with blowers, and the blowers are connected with the supporting springs. And an exhaust fan is arranged on one side of the inner surface of the box body. A denitration catalyst is placed on the surface of the top end of the placing table through a forklift, the placing table is elastically supported through the supporting springs, when dust removal is conducted on the denitration catalyst, the vibrator drives the placing table to vibrate, the dust adsorbed by the denitration catalyst is shaken off, the air blower is started, and the denitration catalyst is placed on the surface of the top end of the placing table. The air blower blows away dust accumulated on the denitration catalyst, then the exhaust fan is started to suck away the dust, the dust is conveyed into the collecting box to be collected in a centralized mode, and the problems that the dust cleaning efficiency is low, and the dust floats and is adsorbed again are solved.

The invention belongs to the field of polishing solutions, and particularly relates to a green polishing solution based on an enzymatic Fenton system. The 4H-SiC substrate polishing solution comprises a component A and a component B, the effective component of the component A is an enzyme-catalyst co-immobilized abrasive material, and the enzyme-catalyst co-immobilized abrasive material comprises an abrasive material matrix, laccase and an iron-based catalyst, and the laccase and the iron-based catalyst are loaded on the abrasive material matrix; the active ingredient of the component A is a phenol substrate, the active ingredient of the component B is a phenol substrate, after the component A and the component B are mixed, laccase catalyzes oxidation of the phenol substrate to generate H2O2 in situ, the H2O2 and an iron-based catalyst are subjected to a Fenton reaction, and hydroxyl free radicals are generated at a polishing interface in situ. According to the invention, continuous, efficient and stable supply of hydroxyl radicals is ensured through enzymatic endogenous hydrogen peroxide circulation and catalyst regeneration circulation, so that the polishing solution can realize long-time stable polishing under a nearly neutral condition, and has the advantages of environmental protection, high polishing efficiency, good surface quality and the like.

This invention discloses an adaptive replenishment method and system for the active components of an SCR denitrification catalyst. The method includes the following steps: obtaining key characteristic parameters of the deactivated catalyst module; inputting the key characteristic parameters into an adaptive adjustment strategy prediction model, outputting the predicted catalyst deactivation type, and a replenishment strategy and process parameter adjustment strategy generated based on the catalyst deactivation type; and controlling the system to execute the replenishment strategy and process parameter adjustment strategy to achieve adaptive replenishment of the active components of the SCR denitrification catalyst. This invention achieves excellent and stable regeneration quality, strong process adaptability, high resource utilization, and high automation, while also realizing full-process digital traceability, improving catalyst regeneration effect and production efficiency.

This invention provides a catalyst regeneration energy recovery heat pump system, belonging to the field of heat pump technology. An external air channel connects to a coke-regeneration system via a heat source regenerator. The coke-regeneration system has a flue gas channel connecting to the outside via a high-temperature heat exchanger and a heat source regenerator. An external gas channel connects to a compressor, a high-temperature heat exchanger, a high-temperature expander, a high-temperature steam generator, and a low-temperature steam generator. A heater connects to the low-temperature steam generator via a booster pump. The heater connects to an evaporator via a throttling valve. The evaporator connects to the low-pressure port of an ejector. The low-temperature steam generator connects to the high-pressure port of an ejector. The ejector connects to the heater via a second compressor. An external liquid medium pipeline connects to the high-pressure port of a second ejector via a second booster pump and a high-temperature steam generator. An external heated medium channel connects to the low-pressure port of the second ejector via the heater. The second ejector connects to the outside. The evaporator also has a low-temperature heat medium channel connecting to the outside, forming a catalyst regeneration energy recovery heat pump system.

The invention provides a method for preparing epsilon-caprolactone through catalytic dehydrogenation of 1, 6-hexanediol, an adopted catalyst comprises CuO and a molecular sieve, the molecular sieve is selected from at least one of ZSM series and Beta molecular sieves, and based on the total weight of the catalyst, the weight percentage of CuO is 0.5-15%; the catalyst is prepared by an ion exchange method or an in-situ synthesis method. According to the present invention, the loading amount of Cu in the catalyst is substantially reduced, the Cu has good dispersibility, and compared with the existing CuO content of 20-40%, the low active component content enables the catalyst to have good stability, the catalyst regeneration has the large advantage, and the production cost can be reduced for a long time. And the method has a higher reaction conversion rate. The problem of azeotropy between the 1, 6-hexanediol and the reaction product in the subsequent separation process is effectively avoided, and the process and cost of product separation are reduced.

The invention provides a catalyst regeneration energy recovery heat pump system, and belongs to the technical field of thermodynamics and heat pumps. An air channel outside is communicated with a charring-regeneration system through a heat source regenerator, the charring-regeneration system is further communicated with the outside through a smoke channel via a heat exchanger and the heat source regenerator, the charring-regeneration system is further communicated with a combustion chamber through a CO-rich smoke channel, and the combustion chamber is further communicated with the outside through a smoke channel via the heat exchanger and the heat source regenerator. The compressor communicates with the high-temperature expansion machine through a circulating working medium channel via the heat exchanger and the combustion chamber, the high-temperature expansion machine communicates with the low-temperature expansion machine through a circulating working medium channel via the heat supplier, and the low-temperature expansion machine communicates with the compressor through a circulating working medium channel via the low-temperature heat exchanger. The heat supply device communicates with the outside through a heated medium channel, the low-temperature heat exchanger communicates with the outside through a low-temperature heat medium channel, the high-temperature expansion machine and the low-temperature expansion machine are connected with the compressor and transmit power, and the catalyst regeneration energy recovery heat pump system is formed.

The invention provides a biofuel preparation device and method, the biofuel preparation device comprises a multifunctional hydrogenation reactor, a suspended bed reaction zone, a fluidized bed reaction zone and a gas-liquid separation zone are integrally arranged in a shell of the multifunctional hydrogenation reactor from bottom to top, and the suspended bed reaction zone is provided with a homogeneous slurry inlet and a lower liquid product outlet; a first reaction zone and a second reaction zone are arranged in the fluidized bed reaction zone; the first reaction zone and the second reaction zone are respectively provided with a microsphere catalyst feeding port, a microsphere catalyst discharging port and a hydrogen inlet; the gas-liquid separation area is provided with a gas outlet and an upper liquid product outlet; the gas outlet is connected with a hydrogen circulating system; and the microspherical catalyst outlet and the microspherical catalyst inlet are used for connecting a catalyst regeneration system. According to the biofuel preparation device provided by the invention, the whole hydro-conversion process from raw material pretreatment to deep refining to product separation is highly integrated and completed in one reactor.

The invention provides a catalyst regeneration energy recovery heat pump device, and belongs to the technical field of refrigeration and heat pumps. An air channel outside is communicated with the charring-regeneration system through a heat source regenerator, the charring-regeneration system is further provided with a smoke channel which is communicated with the outside through a heat exchanger and the heat source regenerator, and a compressor is provided with a circulating working medium channel which is communicated with an expansion machine through the heat exchanger. The expansion machine is divided into two paths after being communicated with a heat supply device through a circulating working medium channel, the first path is communicated with a heat regenerator through a second expansion machine, the second path is directly communicated with the heat regenerator, then the heat regenerator is communicated with an evaporator through a condensate pipeline and a throttling valve, and the evaporator is communicated with the heat regenerator through a circulating working medium channel; the heat regenerator communicates with the compressor through a cycle working medium channel. The heat supplier communicates with the outside through a heated medium channel, the evaporator communicates with the outside through a low-temperature heat medium channel, the expansion machine and the second expansion machine are connected with the compressor and transmit power, and the catalyst regeneration energy recovery heat pump device is formed.

The application provides a method for preparing phenol by oxidizing benzene with N2O in a mobile bed reactor, which comprises: the mobile bed reactor comprises a movable part and at least three catalyst fixed beds which are fixed on the movable part and can switch positions with the movement of the movable part; the at least three catalyst fixed beds are divided into a reaction zone, a regeneration zone and a standby zone; the conveying pipeline of N2O and benzene is communicated with the catalyst fixed bed of the reaction zone, and N2O and benzene are introduced into the catalyst fixed bed of the reaction zone to carry out an oxidation reaction to prepare phenol; after the oxidation reaction is completed, the movable part is moved to disconnect the conveying pipeline of N2O and benzene from the reacted reaction zone and to communicate the conveying pipeline of N2O and benzene with the catalyst fixed bed of the standby zone, and the oxidation reaction is continuously carried out; meanwhile, the regeneration pipeline is communicated with the reacted reaction zone to carry out catalyst regeneration. The catalyst has a long service life, the reaction can be continuously carried out, the process flow is simple, and the method has a good application prospect.

A catalyst regeneration method is suitable for a fluidized catalytic cracking unit has a catalytic cracking reactor and a catalyst regenerator. The regeneration method has the following steps: 1) providing a biomass-derived biomass charcoal; 2) feeding the biomass charcoal and the catalyst to be regenerated from the catalytic cracking reactor into the catalyst regenerator together or separately; 3) introducing an oxygen-containing gas into the catalyst regenerator, wherein the oxygen content of the oxygen-containing gas is 14-28% by volume; and 4) contacting the catalyst to be regenerated with the biomass charcoal and oxygen-containing gas in the catalyst regenerator for coke-burning regeneration. The method can significantly reduce carbon emissions from the catalytic cracking unit, realize the recycling of carbon elements, and provide energy for other process units.

The invention relates to a preparation method of binuclear vanadyl oxalate SCR catalyst regeneration liquid, and belongs to the technical field of SCR catalyst regeneration liquid. The method comprises the following steps: adding oxalic acid dihydrate into water, and stirring for the first time until the oxalic acid dihydrate is completely dissolved to obtain an oxalic acid solution; adding ammonium metavanadate into the oxalic acid solution batch by batch, carrying out second stirring so as to carry out a chemical reaction, continuously introducing nitrogen into a chemical reaction system, and removing carbon dioxide generated by the chemical reaction so as to prepare a binuclear vanadyl oxalate complex solution; after the binuclear vanadyl oxalate complex solution is cooled to a set temperature, polyethylene glycol is added into the binuclear vanadyl oxalate complex solution for third stirring, and a primary regeneration solution is obtained; the primary regeneration liquid is filtered, and binuclear vanadyl oxalate SCR catalyst regeneration liquid is obtained; wherein the density of the binuclear vanadyl oxalate SCR catalyst regeneration liquid is 1g / cm < 3 > to 1.5 g / cm < 3 >, the molar concentration of vanadium is 1mol / L to 2.5 mol / L, and the pH value is 1.5 to 4.5.

The application relates to a device and method for regenerating waste catalysts, belonging to the field of solid waste catalyst recycling. After being ground, the waste catalysts enter a plasma discharge area under the action of a blower, are in a fluidized state in a bed layer, are activated by plasma generated by an equal dielectric barrier discharge (DBD) device, enter a cyclone separator, and the separated waste catalyst powder is recycled to the plasma discharge area through a return pipeline. The device is divided into two modules. The first module utilizes argon and oxygen plasma to degrade the carbon and sulfides in the waste catalysts, effectively increasing the active area of the precious metals. The second module utilizes hydrogen to reduce the precious metal oxides in the waste catalysts, increasing the concentration of the precious metals, and thus realizing the regeneration of the waste catalysts. After the waste catalysts are treated, water vapor is introduced into the device to generate water vapor plasma to clean the device to prevent clogging, prolong the service life of the device, and improve the quality of the products.

The present application provides a catalyst regeneration energy recovery heat pump system, belonging to the technical field of heat pump. The outside has an air channel connected with an internal combustion engine through a compressor and a high-temperature heat exchanger, and has a fuel channel connected with the internal combustion engine. The internal combustion engine has a gas channel connected with the outside through a high-temperature steam generator and a low-temperature steam generator. A second compressor is connected with a heat supplier. The heat supplier is connected with the low-temperature steam generator through a booster pump and is connected with an evaporator through a throttle valve. The evaporator is connected with a jet pump low-pressure port. The low-temperature steam generator is connected with a jet pump high-pressure port. The jet pump is connected with the second compressor. A liquid medium pipeline is connected with the second jet pump high-pressure port through a second booster pump and the high-temperature steam generator. A heated medium channel is connected with the second jet pump low-pressure inlet through the heat supplier. The second jet pump is connected with the outside. The internal combustion engine has a cooling medium channel. The high-temperature heat exchanger has a high-temperature heat medium channel. The evaporator has a low-temperature heat medium channel connected with the outside, forming an energy-carrying internal combustion engine combined cycle heat pump system.