1276 results about "Cracking reaction" patented technology

The invention discloses a thermal field coupling dynamically-adjustable ammonia cracker and a control method, the thermal field coupling dynamically-adjustable ammonia cracker comprises an ammonia preheating device and an ammonia cracking reaction device, the ammonia preheating device comprises a combustion preheating chamber and a controllable pure ammonia burner, the combustion preheating chamber comprises a combustion cavity and an ammonia preheating cavity, the ammonia preheating cavity surrounds the periphery of the combustion cavity, and the controllable pure ammonia burner is arranged in the combustion cavity. The controllable pure ammonia burner comprises an ammonia fuel spray head and an air rotational flow assembly, the air rotational flow assembly comprises a plurality of rotational flow fan blades, the distances between the rotational flow fan blades in the circumferential direction are adjustable, the ammonia cracking reaction device comprises a tail gas inlet pipe, a mixed gas heat exchange cavity and an ammonia cracking reaction pipe, and the ammonia cracking reaction pipe is arranged in the mixed gas heat exchange cavity; an inlet of the mixed gas heat exchange cavity is communicated with the tail gas inlet pipe and the combustion cavity at the same time, the ammonia cracking reaction pipe is communicated with the ammonia preheating cavity, and an ammonia cracking catalyst is arranged in the ammonia cracking reaction pipe. The requirements for the high ammonia cracking rate and the high energy utilization efficiency are met, and meanwhile the hydrogen production amount can be dynamically adjusted according to the hydrogen requirement amount of the ammonia internal combustion engine.

The invention belongs to the technical field of petrochemical process simulation and intelligent optimization control, and particularly relates to a method for constructing and optimizing a full-fraction oil catalytic cracking reaction kinetic model. The construction method comprises the steps of raw material matrix construction, reaction network construction, product property calculation, model parameter optimization and process prediction calculation. The optimization method comprises the following steps: constructing a process optimization index system comprehensively reflecting environmental and economic targets; systematic optimization of reaction conditions and product distribution is realized; intelligent regulation and efficient prediction of the catalytic cracking process are realized; and optimal reaction operation conditions meeting multiple requirements are obtained. The method is high in adaptability, process parameters can be adjusted according to the properties of the raw materials, and efficient conversion is achieved. By optimizing the catalytic cracking process, the yield of aromatic hydrocarbon can be remarkably improved. By predicting and optimizing reaction conditions through the kinetic model, the energy consumption is reduced, the reaction efficiency is improved, meanwhile, the equipment investment and operation cost can be reduced, and the production efficiency and economic benefits are improved.

The invention discloses a carbon dioxide hydrogenation methanation-cracking carbon preparation series method, which comprises the following steps: generating CH4 through a reaction of # imgabs0 # imgabs1 #, and realizing the production of a carbon material by adopting the technologies of condensation separation of CH4 and water vapor, CH4 cracking reaction of # imgabs2 #, cyclic utilization of hydrogen and the like. The process is composed of a carbon dioxide hydrogenation methanation reactor and a methane cracking reactor. In the methanation reactor, CO2 and H2 react under a low-temperature condition to generate CH4 and water vapor; cH4 and water vapor are separated by adopting a compressor condensation separation technology, and the separated CH4 is conveyed to a cracking reactor. In the methane cracking reactor, CH4 is cracked at a high temperature to generate H2 and a carbon nanomaterial, and then H2 is returned to the methanation reactor again. The separation of CH4 and water vapor at a relatively low temperature is realized in the tandem carbonization process through a low-temperature condensation technology; through low-temperature CO2 methanation and CH4 catalytic cracking, the content of CO2 is reduced, a high-quality carbon nanomaterial is obtained, and cyclic utilization of CO2 and H2 is realized.

The invention belongs to the technical field of methane catalytic cracking hydrogen production, and particularly relates to a catalyst continuous cyclic regeneration methane catalytic cracking hydrogen production device and a hydrogen production system. The hydrogen production device comprises a methane catalytic cracking reactor, a steam reforming regeneration reactor and a spiral conveyor, and the bottom of the methane catalytic cracking reactor is communicated with the steam reforming regeneration reactor through the spiral conveyor. A steam distributor is arranged in the steam reforming regeneration reactor, and the top of the steam reforming regeneration reactor is communicated with the top of the methane catalytic cracking reactor. Along with the catalytic cracking reaction, the deactivated catalyst settles to the bottom of the methane catalytic cracking reactor and is conveyed to the steam reforming regeneration reactor by the spiral conveyor, and steam upwards blown by the steam distributor is in contact with the deactivated catalyst, is regenerated and enters the catalytic cracking reactor again; a continuous cycle process of catalysis, inactivation, regeneration and catalysis is completed; the deactivated catalyst is regenerated through water vapor, so that potential safety hazards caused by oxygen entering are avoided.

The invention discloses a lubricating oil preparation method, which comprises: contacting a raw material containing waste rubber with a catalyst in a closed container in a hydrogen atmosphere, and carrying out a catalytic cracking reaction to obtain a lubricating oil-containing product, the catalyst comprises a carrier, an acidic component and an active component loaded on the surface of the carrier, the active component is selected from at least one of a ruthenium elementary substance, a rhodium elementary substance, a platinum elementary substance, a palladium elementary substance, an iridium elementary substance and a nickel elementary substance; the acidic component is selected from at least one of silicotungstic acid, ammonium metatungstate, phosphotungstic acid and tungstic acid. The invention discloses a new path for preparing the lubricating oil by utilizing the waste rubber through a carbon = carbon hydrogenation and carbon-carbon bond breakage strategy under a relatively mild condition. According to the path, new application of waste rubber catalytic conversion is developed through C = C hydrogenation and C-C bond fracture strategies, and a new method for synthesizing lubricating oil with important application value is provided.

The invention relates to the technical field of intelligent control of chemical reactors, and discloses an intelligent temperature control system for a step-by-step catalytic cracking reactor, which comprises a temperature field modeling module, a sensor configuration module, an index definition module, a control execution module, an analysis and diagnosis module and the like. The temperature field modeling module constructs a standard temperature field distribution model through infrared thermal imaging and generates virtual temperature points; the sensor configuration module is used for arranging a real temperature point and acquiring a temperature gradient and a temperature point missing rate; the index definition module sets a preset temperature index based on the thermodynamic parameters; the control execution module realizes steady state, dynamic response, heat balance and composite regulation and control; and the analysis and diagnosis module carries out fault tracing on the target which does not pass regulation and control and adjusts a strategy. The system further comprises a data acquisition module and a communication interface module, so that data storage and external communication are realized. The method improves the temperature control precision and the system self-adaption capability, and is suitable for the complex temperature control scene of the catalytic cracking reaction.

The invention discloses a photovoltaic-driven IDC electric-cooling linkage method and device, and belongs to the technical field of IDC electric-cooling linkage, and the method comprises the following steps: S1, constructing a gravity energy storage structure; s2, the gravity object is lifted to the highest point of the gravity object channel through the gravity energy storage structure; s3, air at the bottom of the gravity object channel is compressed for the second time, and a thermal cracking reaction is carried out; s4, thermal cracking gas generated by the thermal cracking reaction is drained, and combustion products are discharged into a gas storage chamber; s5, the generated steam waste heat pushes a turbine in a turbine chamber to do work for power generation; and S6, domestic hot water and night heating hot water are prepared, convective heat exchange is conducted, the low-temperature reclaimed water obtained after heat exchange is heated into high-temperature steam in a cooler, the high-temperature steam enters a turbine to become high-temperature reclaimed water, and the high-temperature reclaimed water flows into a control center or a water storage pool. The organic matter compressed garbage is used as a gravity object for gravity energy storage, and heavy oil, solid fuel, adsorbents and other high-value products are produced in the gravity energy storage process.

The invention belongs to the technical field of lignin depolymerization, and particularly relates to a selective fracture method of micromolecular mercaptan mediated lignin beta-O-4 connection. In an H-type electrolytic tank, an anode electrolytic tank takes a buffer solution as an electrolyte, a cathode electrolytic tank takes a lignin beta-O-4 model compound as a reaction substrate, and an acetonitrile / buffer solution mixed solution of small molecular mercaptan is taken as an electrolyte for electrochemical cracking reaction. Wherein a micromolecular mercaptan medium is used as a single electron transfer medium, and can efficiently and selectively break key C beta-O bonds in a lignin beta-O-4 model compound at normal temperature and normal pressure under the catalytic action of current to obtain corresponding phenol and ketone monomers, so that the problems that high temperature, high pressure and expensive catalysts are usually needed in depolymerization in a lignin reduction way are solved.

The invention relates to the technical field of rectification, in particular to a rectifying tower for cracking C9 fractions, which comprises a tower body and a tower plate, the tower plate is arranged in the tower body, a CPD extraction device is arranged at the top end of the tower body, a DCPD side line extraction device is arranged in the middle of the tower body, and the lower part of the tower body is communicated with a solvent side line extraction device; a partition plate is arranged in the bottom end of the tower body, the space at the bottom of the tower body is divided into a flash evaporation space and a concentration space by the partition plate, the flash evaporation space is communicated with a C9 fraction supply pipeline through a cracking reactor, and the flash evaporation space is communicated with a tower kettle liquid return pipeline; a solvent extracted by the solvent side-draw device is mixed with tower bottoms extracted from the tower bottoms reflux pipeline, and then is heated by the reboiler and refluxed to the concentration space, and the concentration space is provided with a tower bottoms discharge pipeline; the influence of coking of materials in the rectifying tower or polymers on the rectifying operation can be reduced, and the stability of the rectifying operation is ensured.

The invention discloses an alkaline earth metal modified aluminum oxide loaded nickel-based catalyst as well as preparation and application thereof. The alkaline earth metal modified aluminum oxide loaded nickel-based catalyst comprises a nanofiber-shaped gamma-Al2O3 carrier, Ni and alkaline earth metal oxide, wherein the Ni and the alkaline earth metal oxide are loaded on the carrier; the alkaline earth metal is at least one of Mg and Ca. The invention provides application of the alkaline earth metal modified aluminum oxide loaded nickel-based catalyst in a methane dry reforming reaction or a methane cracking reaction. The thermal stability and the carbon deposition resistance of the catalyst can be effectively improved, and the catalyst has good catalytic performance in a methane dry reforming reaction and a methane cracking reaction.

The system comprises a steam vaporization tank, a cracking reaction tank and a cooler which are connected in sequence, the steam vaporization tank comprises an outer container and an inner container arranged in the middle of the outer container in a sleeving mode, the inner container is used for containing a heating medium, and a heating pipe is arranged in the inner container; a methanol containing cavity is defined between the inner container and the outer container; and a steam outlet pipe is arranged at the top of the side wall of the outer container. The steam vaporization tank is of a double-layer structure, heat conduction oil is arranged in an inner container and is half-filled, methanol gas is arranged on the upper portion between the inner container and the outer container, liquid is arranged on the lower portion between the inner container and the outer container and is uniformly vaporized into methanol steam, gas on the upper portion is overheated and enters the cracking reaction tank, the cracking reaction tank is provided with a plurality of steel pipes filled with catalysts, and the methanol steam is long in gas path and is uniformly cracked into mixed hydrogen under the action of the catalysts.

The invention provides a process system and a process method for recycling a hexafluoropropylene oxide byproduct high-boiling residue, and relates to the field of fine fluorine chemical industry. The process system comprises a heat exchange device, a tubular pyrolysis reaction device, a carbonyl fluoride-trifluoroacetyl fluoride separation tower, a tubular cracking reaction device, a water washing device and an alkali washing device. According to the method disclosed by the invention, the industrial-grade carbonyl fluoride and trifluoroacetyl fluoride are prepared by catalytically pyrolyzing the hexafluoropropylene oxide by-product high-boiling residue; furthermore, a byproduct high-boiling residue of hexafluoropropylene oxide is subjected to complete catalytic cracking to obtain carbonyl fluoride, and a byproduct industrial hydrofluoric acid can be obtained. According to the process system and the process method, the hexafluoropropylene oxide byproduct is recycled into carbonyl fluoride, trifluoroacetyl fluoride and industrial hydrofluoric acid with high added values, harmlessness and recycling of the hexafluoropropylene oxide byproduct high-boiling residues are achieved, the utilization rate of fluorine atoms is 100%, and the process method is mild in reaction condition, economical and environmentally friendly.

The present invention uses viscose-based carbon fiber as raw material, chops it and mixes it with auxiliary material A solution, then puts the mixed chopped fibers into a vacuum tube furnace for heating to obtain pretreated carbon fiber, then mixes auxiliary material B solution with the pretreated carbon fiber to obtain mixed carbon fiber, and puts the mixed carbon fiber into an oven for cross-linking and curing to obtain a mixed gel, and finally performs a high-temperature cracking reaction on the mixed gel to finally obtain a short-fiber hard thermal insulation composite material. The viscose-based short-fiber thermal insulation composite material of the present invention has low thermal conductivity, good mechanical properties, and excellent density and high-temperature resistance.

The invention relates to the technical field of gas generation devices, in particular to a methanol catalytic cracking reactor which comprises an upper seal head, a heat exchange assembly, an isolation assembly and a lower seal head which are sequentially connected, the heat exchange assembly is provided with a heat exchange pipe, and the heat exchange pipe is communicated with the upper seal head and the isolation assembly. The isolation assembly is provided with a plurality of air guide pipes which are communicated with the upper end socket and the lower end socket respectively, the upper ends of the air guide pipes penetrate through the heat exchange pipes and extend into the upper end socket, the space between the air guide pipes and the heat exchange pipes is filled with a catalyst, the isolation assembly is communicated with an air inlet pipe, and the lower end socket is communicated with an exhaust pipe; the CO concentration can be reduced, the reaction is more complete, and loading and unloading of the catalyst and disassembly and cleaning of equipment are facilitated.

A single-crystal hollow ZSM-5 molecular sieve, and a catalyst containing the molecular sieve and a preparation method therefor and a use thereof. Particles of the single-crystal hollow ZSM-5 molecular sieve have a single-crystal structure with an average crystal grain size of 0.8-3.5 μm, and have an internally and externally nested double-layer cavity structure, wherein an inner cavity is at least partially closed by a first molecular sieve wall layer, an outer cavity is completely closed by a second molecular sieve wall layer, and an epitaxially grown nanorod shell layer is provided on the second molecular sieve wall layer. The single-crystal hollow ZSM-5 molecular sieve can be used for macromolecular catalytic cracking reaction, allowing for a higher low-carbon olefin yield, a higher BTX yield, and a higher ethylene / propylene ratio.

The invention provides an efficient environment-friendly petroleum passivator as well as a preparation method and application thereof, and belongs to the technical field of passivators. The preparation method comprises the following steps: reacting bismuth nitrate with tetra (4-carboxyl phenyl) porphyrin and benzoic acid to prepare a carboxyl phenyl porphyrin bismuth-MOF material, reacting antimony nitrate with tetra (4-pyridyl) porphyrin and benzoic acid to prepare a pyridyl porphyrin antimony-MOF material, and performing sol-gel reaction on lanthanum isopropoxide and cerium isopropoxide to prepare lanthanum-cerium sol; the preparation method comprises the following steps: mixing calcium nitrate, magnesium chloride, organic acid, organic amine and hydrogen peroxide for reaction to prepare a calcium / magnesium organic matter, mixing the calcium / magnesium organic matter with other substances, adding the mixture into an acetonitrile / ethanol mixed solvent, and uniformly stirring and mixing to prepare the efficient environment-friendly petroleum passivator. The high-efficiency environment-friendly petroleum passivator prepared by the invention is green, safe, non-toxic and efficient, has better capturing and passivating effects on metal ions such as nickel and vanadium in the catalytic cracking reaction process of heavy oil, improves the activity of a catalyst, prolongs the service life of the catalyst, and thus, has a wide application prospect.

The invention concerns a process and apparatus for cracking ammonia in which heated ammonia at super-atmospheric pressure is partially cracked over a first catalyst in a reaction zone of an electrically heated reactor to produce partially cracked ammonia gas which is then cracked in reactor tubes containing a second catalyst in a fired reactor to produce cracked gas comprising hydrogen gas, nitrogen gas and residual ammonia. The cracked gas is cooled and hydrogen is recovered from the cooled cracked gas in a hydrogen recovery unit. Offgas from the hydrogen recovery unit, or a cracked offgas derived therefrom, provides at least some, preferably all, of the fuel requirement in the fired reactor. Varying the power input to the first part of the cracking reaction enables direct control of the heat flux profile and hence accommodate any excess or shortfall in the heat input from the fired reactor.

The utility model relates to the technical field of cracking furnaces, and discloses an anti-wall-hanging cracking furnace which comprises a reaction furnace, a reaction cylinder is sleeved in the reaction furnace, a top cover is fixedly connected to the top end of the reaction cylinder, a feeding pipe is arranged on the side wall of the top cover, a base is fixedly connected to the bottom end of the reaction furnace, and a discharging pipe is arranged on the side wall of the bottom of the reaction furnace. The reaction cylinder is of a cylinder structure with the top end closed and the bottom end open, the bottom end of the reaction cylinder is located on the lower portion of the reaction furnace, and an annular connecting plate is fixedly arranged on the circumferential outer wall of the upper portion of the reaction cylinder. Compared with the prior art, the device has the advantages that the gas pipes are arranged around the circumferential outer wall of the reaction cylinder, the interior of the reaction cylinder can be rapidly heated through heat entering the space between the reaction furnace and the reaction cylinder from the heat conveying port, the reaction efficiency is improved, and residual materials on the filtering bottom box and the inner wall of the reaction furnace can be scraped off through the arc-shaped scraping ring arranged on the rotating shaft; the arc-shaped guide plate can disturb gas after cracking reaction to form gas flow, and then the gas flow is output out of the reaction furnace through the discharge pipe, so that the material output efficiency after cracking reaction is improved.

The invention relates to the technical field of catalysis, and discloses a catalytic cracking device and method. The device comprises a multi-stage reaction unit and a cracking reaction unit, the multi-stage reaction unit comprises a variable-diameter riser and a multi-stage reaction settler, and the cracking reaction unit comprises a cracking riser and a cracking settler; the variable-diameter lifting pipe comprises a first reaction zone, a second reaction zone and a third reaction zone which are sequentially connected in series in the length direction, the inner diameter of the second reaction zone is larger than that of the first reaction zone and that of the third reaction zone, and an inner conveying pipe extending into the second reaction zone is arranged at the joint of the third reaction zone and the second reaction zone; the cracking settler comprises a cracking steam stripping section, a turbulence reaction section and a cracking settling section which are sequentially arranged along the length direction of the cracking settler, an outlet of the cracking riser is positioned in the turbulence reaction section, and the cracking steam stripping section is provided with a cracking catalyst outlet communicated with the second reaction area. The device can improve the reaction efficiency of catalytic cracking of heavy oil and light hydrocarbon, and realizes tight coupling of heavy oil and light hydrocarbon.

The invention provides an external heat compensation device, system and method for a catalytic cracking bed regenerator. The external heat compensation device (1) comprises an electric energy supply heating device (2) and a shell (3); the electric energy supply heating device (2) is composed of a plurality of electric heating pipes (4). The electric energy supply external heat compensation device is used for performing external heat compensation on the regenerated catalyst, no hydrothermal environment is generated in the external heat compensation device, and the catalyst can be prevented from being structurally inactivated even under an overheat condition, so that the catalyst consumption is reduced, and the heat balance of a catalytic cracking reaction-regeneration system is realized.

The invention discloses a shale oil in-situ thermal cracking reaction experimental device and a use method thereof, the shale oil in-situ thermal cracking reaction experimental device comprises a continuous gas injection pressurization system and a cracking reactor which are connected in sequence, and further comprises a sample collection system; an electric heating rod is arranged in the cracking reactor; the electric heating rod is an annular heating rod, and a reaction bin is arranged in the electric heating rod; a gas measuring assembly and a liquid measuring assembly are arranged in the sample collecting system. According to the invention, by changing the type and flow of injected gas and carrying out experiments at different heating rates, pyrolysis final temperatures and pyrolysis time, samples are collected and analyzed, the relationship between each reaction parameter and the product structure and yield can be determined, and the designed reaction bin can react with shale oil cores at the highest temperature of 800 DEG C and under the pressure of 20 MPa.

The invention relates to a method for preparing low-carbon olefin, which comprises the following steps: contacting an olefin-rich raw material with a thermal regeneration catalyst, and carrying out a first catalytic conversion reaction in a dense-phase fluidized bed layer of a first reactor provided with an instant energy supplement system, the reacted material flow is rapidly cooled through a cooling area, close to the upper part, in the first reactor, so that the reacted material flow is cooled to a target temperature of 450-530 DEG C and then is sent out of the first reactor. According to the method, heat is immediately supplemented for the dense-phase fluidized bed layer, so that the olefin-rich raw material is subjected to catalytic cracking reaction within a proper reaction temperature range, the influence caused by overlarge temperature drop in the reaction process is reduced, and the light raw material is promoted to be subjected to single-molecule cracking reaction; and the yield and the selectivity of low-carbon olefins with high added value, such as ethylene, in the obtained product are improved.

The invention relates to the technical field of SF6 treatment, and particularly discloses a method and a system for degrading SF6 based on placing copper rings on a DBD inner electrode, and the method comprises the following steps: conveying accurately proportioned and diluted SF6 into a DBD reactor, discharging an electrode bar in the DBD reactor to form an electric field, and changing a partial discharge gap and the electric field by using a plurality of copper rings on the electrode bar to complete the degradation of the SF6; according to the invention, diluted SF6 is sent into a plasma environment, SF6 molecules are bombarded by high-energy electrons, ionization and excited state molecules, a cracking reaction is carried out, a low-toxicity or non-toxic decomposition product is generated, and the generated decomposition product is more convenient for adsorption treatment compared with SF6, so that the consumption of diluted gas is reduced, the cost waste is reduced, and the degradation efficiency of SF6 is effectively improved.

The invention provides an oil shale supercritical CO2 fracturing and in-situ conversion integrated device and a working method, belongs to the technical field of oil shale exploitation, and realizes efficient cooperation of supercritical CO2 fracturing and in-situ conversion by integrating a CO2 liquefaction storage system, a fracturing heating system, a stratum simulation system and a data monitoring system. The device comprises a CO2 liquefying and storing system, a CO2 liquefying and storing system, a CO2 liquid storage system, a CO2 liquid storage system and a CO2 liquid storage system, the oil shale fracturing and heating system is used for fracturing the rock core under the simulated formation confining pressure condition and triggering the oil shale in-situ cracking reaction through medium-frequency heating; the oil shale fracturing model is used for simulating an underground fracturing environment and guiding crack propagation; the data monitoring system collects temperature and pressure parameters in real time to optimize process regulation and control. The fracturing process and the conversion process are innovatively coupled, the supercritical CO2 has the characteristics of a fracturing medium, a heat transfer carrier and a reaction medium, the energy utilization rate and the CO2 circulation efficiency are remarkably improved, and the oil shale recovery rate is increased.

The invention relates to the technical field of waste tire recovery, in particular to a method and a system for preparing biological aviation fuel by hydrogenation of waste tire pyrolysis oil, a pretreatment unit is used for performing multi-stage filtration and preheating treatment on the waste tire pyrolysis oil; the hydrogenation reaction unit is used for carrying out hydrogenation reaction and shallow cracking reaction on the pretreated waste tire pyrolysis oil; the separation and purification unit comprises a hot high-pressure separator, a dechlorination reactor, a cold high-pressure separator, a hot low-pressure separator and a cold low-pressure separator, and is used for carrying out dechlorination reaction and gas-oil-water separation treatment on a product of the shallow cracking reaction; the circulating hydrogen unit is used for providing mixed hydrogen for the system; and the fractionation unit is used for fractionating the product separated by the separation and purification unit to obtain the biological aviation fuel. According to the method, the waste tire pyrolysis oil is converted into the biological aviation fuel by adopting a series hydrogenation process, so that the problem of waste tire treatment is solved, and high-value utilization of resources is also realized.

The invention relates to the technical field of methanol cracking hydrogen production, in particular to a process and a system for methanol cracking hydrogen production. Raw material methanol liquid is conveyed to a heat exchanger from a methanol storage tank through a metering pump and is heated and preheated through heat exchange of the heat exchanger, and the preheated raw material methanol liquid is conveyed into a methanol vaporizer to be vaporized into methanol steam; methanol steam enters a reactor and is catalyzed by a catalyst, a cracking reaction is carried out, high-temperature converted gas of hydrogen and carbon monoxide is generated, the high-temperature converted gas is conveyed to a product end after being subjected to heat exchange and cooling by a heat exchanger, the high-temperature converted gas is used as a heat source to exchange heat with fed methanol, and the converted gas is cooled while the methanol is preheated, so that energy complementation is realized; and the process ensures that methanol is fully vaporized, the temperature of the reactor is controlled at the optimal temperature for direct methanol cracking, and the direct methanol cracking reaction is sufficient and less in side reaction under the catalysis of a copper-based catalyst with high activity and good selectivity.

The invention discloses a catalytic cracking system and a catalytic cracking method, relates to the technical field of catalytic cracking, and aims to solve the technical problems that in the prior art, the circulation amount of a catalyst is difficult to adjust, steam distribution is difficult to improve, the settler cleaning effect is poor, and the petroleum refining quality is affected. Comprising a lifting pipe, a catalyst connector arranged outside the lifting pipe and a feeding oil port. In the catalytic cracking reaction process, through cooperation of the guide assembly, on one hand, raw material gas can uniformly react with steam for multiple times, it is ensured that the raw material obtains enough steam for gasification, and then the risk of coking is reduced; according to the catalytic cracking system, gas can be in stable contact with steam in the circulation process, the reaction time of the raw materials and the steam is guaranteed, the possibility that the raw materials are not gasified and coked is further reduced, and the effect of guaranteeing the quality and the refining efficiency of petroleum refined by the catalytic cracking system is further achieved.

The invention discloses a composite aperture molecular sieve catalytic cracking catalyst and a preparation method thereof, and belongs to the technical field of catalytic cracking, the composite aperture molecular sieve catalytic cracking catalyst comprises 20-30% of a macroporous material, 40-60% of a mesoporous-microporous molecular sieve and 20-30% of a binder; the macroporous material is a macroporous alumina / kaolin compound, and the macroporous alumina / kaolin compound takes macroporous alumina as a core and macroporous kaolin as a shell; the mesoporous-microporous molecular sieve is a ZMQ-1 molecular sieve. According to the mode, the macroporous material is prepared from the macroporous aluminum oxide / kaolin compound, the ZMQ-1 molecular sieve and the binder, and the macroporous material takes macroporous aluminum oxide as a core and macroporous kaolin as a shell in the macroporous aluminum oxide / kaolin compound. The catalyst for catalytic cracking of heavy oil has the advantages of high yields of dry gas, liquefied gas, gasoline and diesel oil, low yields of coke and heavy oil and the like. The secondary cracking reaction of gasoline or diesel oil can be effectively prevented, so that the yield of gasoline and diesel oil is improved.

The invention discloses an intelligent catalytic thermal cracking reaction system and method for complex mixed waste plastics, and belongs to the technical field of waste plastic resourceful treatment. The system comprises a feeding device, a high-pressure multi-section cracking reaction kettle, a spraying type heat exchange temperature control system, a heating system, a sensing and analyzing unit, an intelligent control system and a product condensation separation and utilization unit, the method specifically comprises the following steps: (1) pretreating and feeding raw materials; (2) multi-section temperature control cracking reaction; (3) intelligent feedback control; (4) the catalyst has a synergistic effect; and (5) product separation and recovery. According to the invention, a unique spraying type high-pressure multi-section temperature control system is combined with intelligent control of a rate matching algorithm, so that efficient, directional and stable cracking of complex mixed waste plastics is realized, the yield of high-value products such as light olefins, aromatic hydrocarbons and the like is remarkably improved, byproduct residues and energy consumption are reduced, and long-term continuous operation is realized.

Hybrid catalysts for simultaneous dehalogenation and cracking of plastic derived oil include composite particles, where each of the composite particles includes red mud particles and Mordenite zeolite particles. A process includes contacting a plastic derived oil stream with the hybrid catalyst in an FCC reactor to produce an FCC effluent and a used hybrid catalyst. The plastic derived oil stream comprises halogen-containing compounds, and contacting the plastic derived oil stream with the hybrid catalyst causes halogen-containing compounds to react to form hydrocarbons and hydrogen halides, where the hydrogen halides are adsorbed onto surfaces of the red mud particles. The FCC effluent has a concentration of the halogen-containing compounds less than the plastic derived oil stream. Contacting the plastic derived oil stream with the hybrid catalyst causes hydrocarbons in the plastic derived oil stream to undergo cracking reactions over the Mordenite zeolite particles to produce the FCC effluent.