61 results about "Catalyst regeneration" patented technology

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 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.

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.

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.

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 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 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.

This invention discloses a flue gas denitrification device and method. The device is suitable for SCR flue gas denitrification process of ultra-low temperature flue gas, and includes: multiple catalyst modules arranged in rows and columns on the cross-section of the flue, used to adsorb NO in the ultra-low temperature flue gas in a non-heated state. x The NH3 in the ammonia-air mixture, and the NO when heated to the flue gas denitrification window temperature. x The catalyst undergoes a denitrification reaction with NH3. A microwave assembly is positioned above the catalyst modules within the flue gas duct. This assembly includes a horizontally moving microwave generator for heating each catalyst module in a row or column, zone by zone. Once the heated zone has completed the denitrification reaction and the catalyst has been regenerated, the microwave generator moves to the next zone for heating. This invention, through the modular design of the catalyst and the built-in, movable microwave source, enables the catalyst modules to be heated zone by zone in a step-by-step manner, achieving rapid temperature rise of the catalyst module to the flue gas denitrification window temperature and quickly completing the catalyst regeneration process.

The embodiment of the present application relates to the technical field of SCR catalyst regeneration, and provides an SCR catalyst module individualized regeneration system and method, the system comprises: a pre-regeneration detection unit for detecting the key characteristics of each SCR catalyst module to be regenerated respectively, and obtaining the corresponding key detection data; an intelligent control unit for formulating the individualized regeneration scheme corresponding to each SCR catalyst module according to the key detection data; and a regeneration execution unit for calling and executing the individualized regeneration scheme corresponding to the SCR catalyst module entering the regeneration station, and completing the individualized regeneration of the SCR catalyst module in the regeneration station. The embodiment of the present application can realize the accurate regeneration of each SCR catalyst module in the same batch, improve the regeneration quality, and has economic efficiency as a whole.

This invention relates to the field of new energy and liquid carbon fuel technology, specifically to a high-cleanliness methanol alternative fuel for vehicles and its preparation method. The method includes raw material mixing and vaporization, atmospheric pressure gas-phase catalysis, and multi-stage condensation and separation steps. The method combines base methanol with hydrocarbon additives and introduces them into a composite mixed-bed molecular sieve catalyst containing aromatic cascade, etherification, and alkylation active units, as well as an anti-coking flow carrier. Its core principle is to enhance the octane number by following the atmospheric pressure gas-phase aromatization and cascade mechanism, generate ethers in situ as phase stabilizers and hydrogen bonding agents, and utilize a mesoporous carrier to reduce steric hindrance and promote macromolecular desorption. This invention differs from the high-pressure reaction conditions of traditional methanol-to-gasoline processes by overcoming the defects of methanol fuel phase separation upon contact with water and catalyst coking through a one-step atmospheric pressure gas-phase conversion. It eliminates the need for physical co-solvents and significantly extends the catalyst regeneration cycle.

This invention provides a centrifugal fan for a catalyst regeneration system in a PDH (Programmable DH) unit, relating to the field of centrifugal fan technology. It addresses the technical problem in existing centrifugal fans used in PDH catalyst regeneration systems where the heat dissipation effect fails to meet expectations, thus affecting production efficiency. The fan includes a main body, a drive assembly for driving the main body, a transmission assembly for connecting the main body and the drive assembly, and a cooling assembly for cooling the transmission assembly. The transmission assembly includes a bearing housing and a drive shaft housed within the bearing housing; the drive assembly is connected to the main body via the drive shaft. The cooling assembly includes an air-cooling unit located on one side of the bearing housing and used to provide cooling to the outer surface of the bearing housing. With multiple cooling systems (air-cooling and water-cooling), the transmission assembly of this invention effectively reduces the risk of damage due to overheating, thereby preventing production efficiency losses caused by transmission assembly failure.

The application discloses a regeneration method and a regeneration device of waste denitration catalyst, and belongs to the technical field of regeneration treatment of flue gas denitration catalyst. The method comprises the following steps: S1, cleaning treatment, placing the waste SCR denitration catalyst in a cleaning liquid for cleaning; S2, drying treatment, drying the cleaned catalyst; S3, pre-loading treatment, impregnating the dried catalyst with an activation liquid with a first concentration, and then performing first solidification treatment; and S4, main loading treatment, impregnating the pre-loaded catalyst with an activation liquid with a second concentration, and then performing gradient temperature solidification treatment. The second concentration is greater than the first concentration, and the impregnation temperature of the main loading treatment is higher than that of the pre-loading treatment. The application improves the uniformity and the binding strength of the active component through step-by-step loading, adapts to catalyst sample regeneration test, and guarantees the reference value of regeneration process parameters.

Catalyst regeneration equipment for regenerating a catalyst that has deteriorated due to catalytic action while a predetermined source gas is continuously introduced into a reactor comprising a plurality of reaction tubes, each filled with the catalyst, wherein the reactor produces a predetermined product through the catalytic action of the catalyst in each of the plurality of reaction tubes, the catalyst regeneration equipment comprising: a catalyst deterioration detection unit configured to detect the presence or absence of catalyst deterioration in each of the plurality of reaction tubes; a regeneration gas supply unit capable of delivering a predetermined regeneration gas to each of the plurality of reaction tubes for the regeneration of a deteriorated catalyst;and a control unit designed to control the regeneration gas supply unit in order to supply the regeneration gas to a reaction tube comprising the catalyst in which the deterioration has been detected, based on a detection result of the catalyst deterioration detection unit.

The application provides an SCR catalyst regeneration plant energy consumption regulation system and method, the system comprises an equipment energy consumption collection module, a production plan optimization module and a control module; the equipment energy consumption collection module comprises various sensors arranged at each key equipment and process node of the plant, is used for collecting equipment energy consumption, process parameters and production data in real time, and is uniformly uploaded to a flexible load analysis module through an industrial communication network; the production plan optimization module is used for constructing and solving a multi-objective optimization model according to the equipment energy consumption, process parameters and production data collected by the equipment energy consumption collection module in real time, and generating an optimal production scheduling strategy; the control module is used for converting the optimal production scheduling strategy into control instructions of each process equipment and controlling automatic operation of each process equipment. One technical effect of the application is to maximize the reduction of energy cost, obtain demand side response income, and finally realize the minimization of comprehensive operation cost.

The application discloses a regeneration device and method of inactivated hydrofining catalyst, and relates to the field of catalyst regeneration. The regeneration device of the inactivated hydrofining catalyst is characterized in that, through cooperation of the arc-shaped outer shape of the turnover plate and the inclined installation, when the material guide mechanism drives the inactivated catalyst to pass between the electric heating rods, the turnover plate is used to contact the inactivated catalyst, and the inactivated catalyst is turned over to scrape the bottom in the movement process, so that the inactivated catalyst at the bottom is turned over when passing below the heating rod, and meanwhile, the inactivated catalyst is turned over, so that the inactivated catalyst uniformly absorbs the heat generated by the electric heating rod, and meanwhile, the installation directions of the turnover plates at the bottom of the adjacent fixed rods are opposite, the inactivated catalyst is reciprocatingly turned over in the process of passing below the electric heating rod, and material falling caused by one-way turning over is avoided.

Catalyst regeneration equipment for regenerating a catalyst that has been degraded due to a catalytic action, while a predetermined source gas is being continuously introduced, in a reactor including a plurality of reaction tubes each being filled with the catalyst, the reactor generating a predetermined product through the catalytic action of the catalyst in each of the plurality of reaction tubes, the catalyst regeneration equipment including: a catalyst degradation detection unit configured to detect presence or absence of degradation of the catalyst in every one of the plurality of reaction tubes; a regeneration gas supply unit capable of supplying a predetermined regeneration gas for regenerating a degraded catalyst to every one of the plurality of reaction tubes; and a controller configured to control the regeneration gas supply unit to supply the regeneration gas to a reaction tube including the catalyst in which the degradation has been detected, based on a detection result by the catalyst degradation detection unit.

This utility model relates to the technical field of chemical production, and particularly to a catalyst regeneration device for chemical production. Its technical solution includes a fixed box, a connecting box, a support plate, and a regeneration box body. A sealing cover is hinged to the upper surface of the regeneration box body. A suction pipe, penetrating the sealing cover, is connected to the upper surface of the regeneration box body, and a suction valve is threaded onto the outer surface of the suction pipe. A fixed box is embedded and fixed to the inner wall of the regeneration box body, and a fixing hole is formed on the outer surface of the fixed box. A support plate is fixed to the bottom inside the fixed box, and a connecting hole is formed on the inner wall of the support plate. A feed chute is formed on one outer end face of the fixed box. The connecting box is embedded and fixed to the inner wall of the regeneration box body, and a support hole is formed on the outer surface of the connecting box. A guide plate is fixed to the bottom inside the connecting box, and an installation hole is formed inside the guide plate. A discharge chute is formed on one outer end face of the connecting box. This utility model facilitates the replacement of regenerated materials.

The present disclosure relates to a method and system for producing olefins from coal, water enters a new energy water electrolysis hydrogen production device to prepare hydrogen and oxygen, which provides the required oxygen for the gasification reaction in the coal gasification device and the methanol-to-olefin catalyst regeneration, and provides the required hydrogen for the methanol synthesis reaction in the syngas-to-methanol device; and the carbon dioxide generated by the gasification reaction in the coal gasification device and the carbon dioxide separated from the flue gas of the methanol-to-olefin device are sent into a carbon dioxide electrolysis device to generate syngas and oxygen, the syngas is used as a raw material for preparing synthetic methanol, low-carbon olefins such as ethylene and propylene are produced through the methanol-to-olefin device, the water produced by the methanol-to-olefin device is further used as a raw material for electrolyzing water to produce hydrogen, and the oxygen is used as a feed for the gasification reaction and the methanol-to-olefin catalyst regeneration, thereby realizing the cyclic utilization of oxygen and the near-zero emission of carbon dioxide.

This utility model discloses a pretreatment device for regenerating precious metals from waste catalysts, belonging to the field of waste catalyst pretreatment technology. It includes a base plate with a rotating plate on top. A first support and a second support are fixedly connected to the top of the rotating plate, and a heating furnace is fixedly connected to both supports. A second mounting block is fixedly connected to the top of the base plate, and a first lead screw is rotatably connected to the second mounting block. A ball nut is screwed onto the side surface of the first lead screw, and a connecting strip is hinged to the top of the ball nut. The end of the connecting strip away from the ball nut is hinged to the bottom of the rotating plate. Through the coordinated use of these devices, when the first motor drives the first lead screw to rotate, the connecting strip can push the rotating plate to flip. When the rotating plate flips, the heating furnace also tilts accordingly. After the heating furnace tilts, the waste catalyst slides down, effectively improving the unloading efficiency of the waste catalyst and reducing the workload of the workers.

This invention belongs to the field of catalyst regeneration technology, specifically a regeneration method for a tetrafluoroethane catalyst, comprising the following steps: S1: Real-time monitoring and data acquisition: During normal operation of the reaction system, key process parameters are continuously monitored and acquired in real time; S2: Intelligent diagnosis of deactivation mode and regeneration decision-making: The real-time data acquired in S1 is input into a preset catalyst deactivation diagnosis model. The diagnosis model outputs specific deactivation type, severity, and bed location information. When the degree of deactivation reaches a preset threshold, this invention accurately determines the main cause of deactivation through the intelligent diagnosis model and matches different regeneration media and microwave parameters accordingly, achieving "targeted treatment." The phased targeted treatment avoids the secondary damage that may be caused by traditional "one-size-fits-all" regeneration, significantly improving the efficiency and stability of activity recovery and helping to extend the overall service life of the catalyst.

The application provides a cellulose catalytic fermentation preparation method of industrial ethanol and a catalyst thereof, and belongs to the technical field of preparing industrial ethanol fuel from cellulose. The preparation method comprises raw material choline chloride-lactic acid eutectic solvent heat treatment, catalytic hydrolysis fermentation and product separation. The composite catalyst is prepared by compounding Zn-MOF-CNTs-OH composite precursor, lignin-cellulose-PMMA composite precursor, ammonium molybdate and melamine, sintering, NaOH etching, sequentially sulfonating by concentrated sulfuric acid and chlorosulfonic acid to introduce double acid sites, and finally mixing with ammonium iron citrate, nickel acetate, copper acetate and PVP-VA copolymer, and adding sodium borohydride aqueous solution to react. The crystalline structure of cellulose is broken by eutectic solvent pretreatment, the magnetic composite catalyst with double acid sites and metal alloy is used to realize efficient hydrolysis, the in-situ fermentation and catalyst regeneration process are combined, and the conversion efficiency and economy are significantly improved.

This invention belongs to the field of catalysts and organic synthesis, specifically relating to a surface-modified lipophilic catalyst and its application in the preparation of bis-ethylhexyloxyphenol methoxyphenyl triazine. This invention utilizes lipophilic modification to construct lipophilic channels, significantly reducing mass transfer resistance and allowing sterically hindered phenolic ethers to rapidly enter the active site, resulting in a more complete reaction. Zinc ions and sulfonic acid groups form a dual-acid synergistic catalysis, providing mild activation, high selectivity, and suppressing side reactions. The ionic liquid and ethanol form a polar gradient field, achieving directional substrate delivery, intermediate stability, and rapid product desorption. Catalyst regeneration is simple; it can be reused after washing with anhydrous ethanol, eliminating the need for brine and hydrochloric acid and preventing secondary pollution.

The present invention aims to provide a method for producing olefins using waste plastic raw materials, which enables sufficient catalyst regeneration while suppressing catalyst degradation. [Solution] A method for producing olefins, comprising: a thermal decomposition step of thermally decomposing a waste plastic raw material containing polyolefin to obtain a hydrocarbon flow; a crude olefin production step of supplying the hydrocarbon flow to a catalytic cracking apparatus that decomposes hydrocarbons by contacting a catalyst containing zeolite with hydrocarbons to obtain crude olefins; a separation step of separating olefins having 2 to 4 carbon atoms from the crude olefins; a hot air generation step of generating hot air containing oxygen gas using a hot air generator; and a catalyst regeneration step of supplying the hot air to a catalyst regeneration apparatus that regenerates a catalyst by heating, regenerating the catalyst used in the crude olefin production step with the hot air, and returning the regenerated catalyst to the catalytic cracking apparatus.

This application relates to the field of catalyst regeneration technology, and more particularly to a method and system for recycling catalysts used in the butadiene-to-adiponitrile synthesis process. The butadiene-to-adiponitrile synthesis process includes a cyclic reaction flow comprising a primary hydrocyanation reaction, an isomerization reaction, and a secondary hydrocyanation reaction. The method includes: obtaining pre-conversion and pre-selectivity data for each reaction in the first reaction flow, and post-conversion and post-selectivity data for each reaction in the Nth reaction flow; obtaining conversion change data and selectivity change data for each reaction from these data; determining the amount of catalyst to be recovered for each reaction based on these data; and processing the recovered catalyst based on these recovery amounts to obtain a regenerated catalyst. This method directly determines the amount of catalyst to be recovered by using the conversion change data and selectivity change data for each reaction, achieving accurate catalyst recovery and effectively improving the catalytic performance of the catalyst.