58 results about "Reactor design" patented technology

The invention discloses a small modular prismatic high-temperature gas cooled reactor core optimization design method and system based on data driving. The method comprises the following steps: constructing a training data set; a data-driven agent model is trained to replace and execute high-cost simulation calculation; and exploring a design space and generating a group of Pareto optimal candidate solutions by using a multi-objective evolution algorithm and taking the proxy model as a fitness function evaluator. The key feature of the method is a closed loop of iterative verification and model updating: verifying the candidate solution through high-fidelity simulation, if the prediction precision does not meet the convergence criterion, expanding the verified new data point to a training data set, and retraining the agent model. According to the method, the calculation cost can be remarkably reduced, a complex design space can be efficiently explored, and a physically reliable reactor design scheme with better performance can be obtained.

The invention provides a reactor internal capable of realizing integral movement of a reactor core, and relates to the technical field of research, development and design of reactor body structures, the reactor internal comprises a hanging basket barrel, a reactor core shroud and a reactor core; the reactor core is arranged in the reactor core shroud; the reactor core shroud is arranged in the hanging basket barrel body, the reactor core shroud is movably connected with the hanging basket barrel body, the reactor core shroud slides up and down in the hanging basket barrel body, and the bottom of the hanging basket barrel body supports the reactor core shroud. According to the invention, the material changing and maintenance efficiency can be effectively improved, the downtime is shortened, the safety is enhanced, the personnel radiation exposure risk is reduced, the inspection and maintenance are convenient, and the service life of equipment is prolonged. The system adapts to advanced reactor design and conforms to the development trend of modularization and high efficiency, and the performance, safety and economical efficiency of the nuclear reactor are remarkably improved through the design of the system.

This invention relates to the field of chemical synthesis technology, specifically disclosing a high-temperature pyrolysis reaction system and its application. The high-temperature pyrolysis reaction system of this invention employs a two-stage reactor design and is filled with a differentiated catalyst. Combined with acetone as an intermediate feedstock between the two stages, it improves the feedstock conversion rate and the selectivity of the target product. The biomimetic integral catalyst solves the problems of poor mass transfer, high pressure resistance, and backmixing caused by traditional packing materials, achieving precise control of the pyrolysis time and inhibiting secondary polymerization and reverse reactions of the product at high temperatures. Through synergistic optimization of reactor configuration, catalyst structure, and separation technology, the entire system effectively suppresses carbon deposition, achieving efficient preparation of dimethyl ketene. This invention forms an integrated high-temperature pyrolysis reaction system from pyrolysis reactor design, catalyst structure design, and improved separation technology, and applies it to the pyrolysis of isobutyric anhydride to produce dimethyl ketene, achieving high feedstock conversion rate and high selectivity of the target product.

The application relates to a knowledge-driven multi-agent cooperative reactor scheme demonstration system and a design method, medium and equipment thereof, the system comprising: a knowledge internalization unit for converting unstructured and semi-structured documents into a dynamic knowledge source which can be queried and utilized by a model in real time; a knowledge structuring unit for extracting core entities, relationships and attributes from the knowledge source and constructing a professional knowledge graph of a reactor design field; and a knowledge application unit for constructing intelligent agents and a collaborative working mechanism of multi-professional intelligent agents based on the knowledge source and the knowledge graph, and constructing an intelligent question and answer interface. Through automatic knowledge management and intelligent agent collaborative work, the application significantly reduces the time and effort of manual intervention and improves the efficiency of reactor scheme demonstration.

The invention relates to the technical field of nuclear reactor design, in particular to a safety assembly, a lead-cooled fast neutron reactor and a passive negative reactivity feedback method. The safety assembly comprises a first positioning piece, a second positioning piece and a containing piece. The first positioning piece and the second positioning piece are respectively connected with the accommodating piece so as to position the two ends of the accommodating piece in the linear direction, the accommodating piece is provided with an accommodating cavity for accommodating a coolant, and one end of the accommodating cavity in the length direction is communicated with the outside of the accommodating piece. The safety assembly is applied to the lead-cooled fast neutron reactor to serve as a safety barrier on the periphery of the reactor core, passive negative reactivity can be rapidly introduced, the structure is simple, implementation is convenient and fast, the nuclear reactor design specification and related technical requirements can be better met, and safety and reliability are further improved.

Reactor configurations may include one or more staged inlets and / or one or more staged outlets for gaseous and solid feedstocks. In one embodiment of the present disclosure, a reactor design for gas-solid reaction with one or more additional outlet for gas and / or solid phase is provided. In yet another embodiment, the design for a gas-solid reactor with one side inlet and two outlets for gas phase is described. In one embodiment, a reactor design with pairs of inlet and outlet for both gas and solid phase is provided. In another embodiment, a reactor design with one or more side inlets but only one outlet for gas phase is provided. In yet another embodiment, a reactor design with two inlets at the top / bottom of reactor and two side outlets for gaseous phase is described. In yet another embodiment, a reactor design with one or more side inlets and outlets for both gas and solid phases is provided.

The embodiment of the application relates to the technical field of nuclear reactor design, and particularly relates to a reactor, which comprises: solid fuel arranged in a reactor body, mixed gas input into the reactor body and reacted with the solid fuel to generate gaseous fuel, a reaction degree control element arranged to be capable of controlling the reaction degree of the mixed gas and the solid fuel, and a nuclear reactivity control element arranged to be used for controlling the nuclear reactivity of the gaseous fuel and the solid fuel. The embodiment of the application inputs the mixed gas into the reactor body, makes the mixed gas react with the solid fuel to generate the gaseous fuel, can simplify the supply mode and supply equipment of the reactor fuel in the mode of producing the gaseous fuel on line, improves the economy of the reactor, simultaneously, controls the reaction degree of the mixed gas and the solid fuel by using the reaction degree control element, controls the nuclear reactivity of the gaseous fuel and the solid fuel by using the nuclear reactivity control element, and is favorable for guaranteeing the reliability and stability of the reactor operation.

This application relates to the field of nuclear reactors, specifically to a reactor comprising: a reactor vessel, a core assembly, a support member, a shielding assembly, a coolant heat exchange and delivery assembly, and a reactivity control assembly. The reactor vessel forms a top opening; the support member provides support for the core assembly within the reactor vessel, and a coolant flow channel is formed between the support member and the reactor vessel for coolant flow; the shielding assembly is disposed within the reactor vessel to provide shielding for the core assembly; the coolant heat exchange and delivery assembly is configured to drive coolant to flow within the coolant flow channel to the core assembly to cool the core assembly, and to guide and cool the coolant flowing out of the core assembly; the reactivity control assembly controls the reactivity of the reactor; the support member also supports the coolant heat exchange and delivery assembly, and together with the coolant heat exchange and delivery assembly, closes the top opening. The reactor components of this application are relatively concentrated and compact, achieving a small reactor design.

The invention relates to the technical field of intelligent water affair treatment, in particular to an intelligent detection method and device for the denitrification efficiency of a denitrification reactor, and the method comprises the following steps: obtaining a to-be-detected image; performing instance segmentation processing on the to-be-detected image to obtain bubble parameters; a denitrification efficiency detection model is constructed and trained; and inputting the bubble parameters into a trained denitrification efficiency detection model to obtain a detection result. According to the embodiment of the invention, the experiment repeatability is ensured through the design of the parallel reactor, the bubble characteristics are accurately extracted in combination with the MaskFreeVIS model, and the nonlinear correlation model is constructed by using the BP neural network, so that the relative error between the detection result and the measured value of the national standard method is controlled within the engineering allowable range, and the actual detection precision requirement is met.

The fission reactor has a shell surrounding a reactor space that is a central longitudinal channel, and a plurality of axially extending rings having adjacent rings form an annular cylindrical space in which a plurality of primary axial tubes are located circumferentially. The circumferentially adjacent primary axial tubes are separated by one of a plurality of secondary channels, and a plurality of webbings connect at least a portion of the plurality of primary axial tubes to an adjacent structure. The fissile fuel composition is located in at least a portion of the plurality of secondary channels, and the primary coolant passes through at least a portion of the primary axial tubes. Addition and / or subtraction manufacturing techniques form an integral and single structure for the fuel-loaded reactor space. During manufacturing and construction, the reactor design can be analyzed using a computational platform that integrates and analyzes data from on-site monitoring during manufacturing.

The invention provides a design method of a double-phase composite magnetic material magnetic valve type electric reactor and the electric reactor, and belongs to the technical field of magnetic valve type electric reactor design. A mixed magnetic circuit structure of a double-phase composite magnetic material and a silicon steel sheet is established, and a hard magnetic material and a soft magnetic material are uniformly distributed in a nanoscale ratio of 3: 7; a 0.2 mm accurate air gap is arranged between the two materials to realize magnetic circuit decoupling, the multistage gradient geometric design of a distributed magnetic valve structure is utilized to optimize magnetic flux distribution and calculate an optimal excitation current vector, and a magnetic coupling coefficient calculation function is established to determine winding parameters to realize effective separation of alternating current magnetic flux and direct current magnetic flux. A multi-objective optimization algorithm and a game theory model are adopted to coordinate a balance relation between magnetic flux distribution uniformity and loss control, design parameters are verified through finite element simulation and optimized to meet performance requirements, and the technical problem of high energy loss caused by magnetic flux path coupling of the magnetic valve type reactor is solved.

The utility model discloses an insulation noise reduction structure of an extra-high voltage oil-immersed shunt reactor, which comprises a plurality of layers of insulation partition plates, a cork rubber pad, a non-adhesive laminated wood fastener, a hot-pressed polyester resin plastic laminated board fastener and a lastrum laminated wood bracket, and the two adjacent layers of insulation partition plates are separated by the cork rubber pad. And the insulating partition plate is fixed on the box wall of the extra-high-voltage oil-immersed shunt reactor through the cork rubber pad, the non-adhesive laminated wood fastener, the hot-pressed polyester resin plastic laminated board fastener and the Lushi laminated wood bracket. The insulation noise reduction structure has enough mechanical strength and certain flexibility, integrates the advantages of reliable mechanical structure, reliable insulation, noise absorption and the like, and solves the problems of high ground potential field intensity and low noise attenuation in a high-voltage line end outgoing line area. The low-noise electric reactor has the advantages of being capable of improving the ground insulation strength of the high-voltage line end and absorbing and attenuating noise, and is suitable for the design of low-noise electric reactors with the grade of 750 kV to 1100 kV.

The application discloses a kind of based on data-driven small modular prismatic high temperature gas cooled reactor core optimization design method and system, comprising: constructing training data set;Training a data-driven proxy model is used to replace the execution high-cost simulation calculation;With a multi-objective evolutionary algorithm, and with the proxy model as its fitness function evaluator, to explore design space and generate a set of Pareto optimal candidate solution.The key features of the application are an iterative validation and model updating closed loop: the candidate solution is verified by high-fidelity simulation, and if the prediction accuracy does not meet the convergence criteria, the new data points after verification are expanded to the training data set, and the proxy model is retrained.The application can significantly reduce the calculation cost, efficiently explore the complex design space, and obtain a physically reliable and more optimal reactor design scheme.

The invention relates to the technical field of organic synthesis, in particular to a trichlorfon production device and a trichlorfon production process, the device comprises a first-stage synthesis kettle, a first-stage synthesis kettle condenser, a second-stage synthesis kettle, a second-stage synthesis kettle condenser and a centrifugal machine; a trichloroacetaldehyde feeding hole, a dimethyl phosphite feeding hole and a precipitant feeding hole are formed in the top of the first-stage synthesis kettle, an overflow hole is formed in the upper part of the side wall of the first-stage synthesis kettle, and the top of the first-stage synthesis kettle is connected with a first-stage synthesis kettle condenser through a pipeline; the second-stage synthesis kettle is communicated with an overflow port of the first-stage synthesis kettle through an overflow pipe, and the top of the second-stage synthesis kettle is connected with a second-stage synthesis kettle condenser through a pipeline; and the centrifugal machine is communicated with an overflow port of the second-stage synthesis kettle through an overflow pipe. According to the invention, a continuous synthesis method is adopted, and solid trichlorfon is immediately precipitated and separated out by adding a precipitant; meanwhile, two stages of synthesis kettles are arranged, so that solid trichlorfon is precipitated and separated out more sufficiently while the reaction retention time is ensured, the trichlorfon content is greater than or equal to 98%, and the yield is greater than or equal to 90%.

The invention relates to the technical field of production of high-purity lithium fluoride, and discloses a preparation system and method of nanoscale high-purity lithium fluoride. Comprising the following steps: a primary reaction tower, in which lithium carbonate powder and hydrofluoric acid solution droplets are in contact and mixed reaction to obtain slurry containing lithium fluoride; the second-stage reaction tower is used for carrying out curing reaction on the lithium fluoride-containing slurry from the first-stage reaction tower to obtain a material subjected to the curing reaction; the settling tower is used for carrying out settling separation on the material after the curing reaction from the secondary reaction tower to obtain supernate and concentrated lithium fluoride slurry, and returning the supernate to the primary reaction tower for recycling; and the spray drying tower is used for carrying out spray drying on the concentrated lithium fluoride slurry from the settling tower to obtain the nanoscale high-purity lithium fluoride. According to the method, through specific reactor design and process parameter control, accurate control and automatic adjustment of the particle size of the lithium fluoride product can be realized.

The application provides a compact two-step hydrogen production device and method for methane, and relates to the technical field of hydrogen energy.The application combines a hydrogen production reaction of methane staged reforming and a hydrogen production reaction of water vapor conversion, and designs a compact two-step hydrogen production device with a single reactor as the main body.The device switches the input gas through a valve to realize the switching of the two groups of reactions in the two-step hydrogen production process of methane, and can stably and efficiently produce hydrogen at a lower temperature and under isothermal conditions.At the same time, the hydrogen production process in the device mainly involves the hydrogen production of methane staged reforming and the hydrogen production of water vapor conversion, and the combination between the two-step hydrogen production reactions realizes more efficient high-purity hydrogen production.At the same time, compared with the conventional double reactors which are relatively complex, the compact reactor design is improved in scale, reconstruction space and energy saving effect.

This application relates to the field of cooling devices in the pressure vessel containing the reactor core of a nuclear reactor, specifically to a coolant heat exchange and delivery assembly suitable for a reactor and a reactor. The coolant heat exchange and delivery assembly includes a heat exchange and delivery assembly, a drive assembly, and a heat exchange tube assembly. The heat exchange and delivery assembly is configured to form a heat exchange cavity and a drive cavity in fluid communication with the heat exchange cavity. The drive assembly cooperates with the drive cavity to drive coolant flowing from the reactor core assembly to the heat exchange cavity, where it exchanges heat with the heat exchange tube assembly and then returns to the core assembly. The heat exchange and delivery assembly is also configured to form a gas cavity communicating with the reactor's secondary loop condenser. When steam leaks from the heat exchange tube assembly in the heat exchange cavity, the gas cavity and the heat exchange cavity are connected, allowing steam in the heat exchange cavity to enter the secondary loop condenser via the gas cavity. This configuration achieves a relatively compact and integrated integration of multiple functions of the reactor assembly, facilitating miniaturized and compact reactor design.

The application provides a high-strength micro-particle diameter methanation catalyst and a preparation method, which comprises the following steps: S1: dispersing a catalyst carrier, an acid colloidal solvent and a nitrate mixture in water to obtain a colloidal mixed solution; S2: performing aging treatment on the colloidal mixed solution to obtain a precursor colloid; S3: performing kneading extrusion and autoclaved forming maintenance on the precursor colloid to obtain precursor particles; S4: performing first calcination treatment on the precursor particles to obtain a metal oxide carrier; S5: performing impregnation treatment on the metal oxide carrier in an active ion solution to obtain a catalyst precursor; and S6: performing second calcination treatment on the catalyst precursor to obtain the high-strength micro-particle diameter methanation catalyst. The catalyst obtained by the method is particularly suitable for a reactor design that needs frequent start-stop, and the catalyst has high strength and catalytic activity and has good catalytic stability in an environment that needs frequent start-stop.

Embodiments of the present application relate to the technical field of nuclear reactor design, and particularly relate to a gaseous fuel reactor and a reactor. The gaseous fuel reactor comprises: a reactor body forming a containing cavity; a feeding device configured to deliver solid material into the containing cavity; mixed gas being input into the containing cavity through a gas injection port and reacting with the solid material in the containing cavity to generate gaseous fuel; and a nuclear reactivity control member configured to control the nuclear reactivity of the gaseous fuel. By inputting mixed gas and solid material into the reactor body to make them react to generate gaseous fuel, the supply of gaseous fuel can be designed integrally with the structure of the gaseous fuel reactor, the supply mode and supply equipment of gaseous fuel are simplified, the utilization rate of solid material is improved, and thus the economy of the reactor is improved. The nuclear reactivity of the gaseous fuel is controlled by the nuclear reactivity control member, and the reliability and stability of the operation of the gaseous fuel reactor are ensured.

A direct fusion heat exchanger technology allows for the efficient transfer of fusion plasma heat energy to a working fluid for aerospace propulsion and other applications. Aspects of this disclosure also enable the generation of high neutron fluxes for applications like medical isotope production, materials testing, and neutron radiography. The use of a thin-film beam window array allows charged particles from a fusion plasma or accelerator to pass through and directly interact and heat the working fluid or fusion target. The thin-film beam window array offers advantages in efficiency, compactness, and safety compared to traditional fusion reactor designs. The technology also addresses the limitations of existing neutron sources by providing a simpler, cheaper, and more efficient method for generating high neutron fluxes.

The application discloses a loss evaluation method for a no-loop-flow air-core reactor, and belongs to the technical field of reactor design. The no-loop-flow air-core reactor comprises a reactor coil which is wound by N aluminum flat wires. The aluminum flat wires are independently wound on each star frame arm. Each aluminum flat wire is wound by only N / 1 circle to enter the next circle. The N aluminum flat wires are wound according to the number of the amplitude aluminum flat wires which are wound by each package in a single-layer structure, and then the N aluminum flat wires continue to wind the next layer structure along the reverse direction after the single-layer structure is completed, until the whole reactor coil is wound. Since the equal wire length principle is adopted when the reactor is wound, there is no loop-flow loss in the reactor. The total loss of the reactor is the sum of the resistance loss and the eddy current loss. When the loss calibration of the reactor is performed, the accurate theoretical calculation of the internal magnetic field loss of the new series no-loop-flow reactor is realized, and the influence of the actual loss detection of the reactor caused by the additional loss of the external environment during the actual test is corrected.

The application discloses a chemical reaction system multi-physical field semi-physical simulation device and method, and belongs to the field of chemical testing and simulation. The device contains a parameterized model construction, a real-time simulation environment, a semi-physical simulation algorithm and a parameter correction calculation module, can construct a reactor multi-parameterized mathematical model, realizes one-dimensional / three-dimensional model on-demand calling and correction, accesses actual hardware such as DCS / PLC to complete virtual-real real-time closed-loop testing; the method is to construct a parameterized model containing an Arrhenius law kinetic equation, after one-dimensional / three-dimensional joint simulation prediction, the model parameters are corrected by using the measured data of hardware-in-the-loop testing. The application integrates multiple simulation technologies, solves the problems of high risk and high cost of chemical experiment, low precision of pure virtual simulation and inability of real-time optimization, can safely simulate extreme working conditions, the prediction accuracy of main product yield is more than 96%, the hot spot temperature error is less than or equal to 3 DEG C, improves the verification precision of reactor design and control strategy, and reduces the research and development risk.

The invention discloses a CH4-CO2 reforming bionic spider web foam reactor and an optimization design method thereof, which are inspired by excellent performance of spider webs in the aspects of bearing mechanical stress and transferring heat energy, and designs a novel foam reactor combining a high-thermal-conductivity copper alloy spider web structure and high-mechanical-strength nickel-chromium alloy porous foam. Further, parameter optimization is carried out on the branch spacing H, the main branch thickness m and the branch thickness L of the reactor through a response surface method (RSM), and when H is equal to 3 mm, m is equal to 0.9 mm and L is equal to 0.96 mm, the efficiency of converting solar energy into fuel reaches up to 41.54%. The thermal shock of non-uniform concentrating solar energy is effectively resisted, the temperature field distribution uniformity of the foam reactor is improved, the energy conversion efficiency of the foam reactor is remarkably improved, and a new reactor design scheme is provided for realizing efficient concentrating solar energy driven CH4-CO2 reforming.

Gas-solid reactors and related methods for producing anode materials. The reactor designs producing highly efficient gas-solids contact and therefore are suitable for providing access of a gaseous, silicon-containing precursor to the void spaces within a porous scaffold, for example a carbon exhibiting a pore volume, to produce a silicon-carbon composite material.

The application discloses a kind of transient voltage distribution determination methods and systems of ring type hollow reactor, it is related to the field of reactor design, the method includes obtaining the basic parameters of ring type hollow reactor;Parameter extraction is carried out on circuit parameter using the basic parameters, resistance parameter, inductance parameter and parasitic capacitance parameter are obtained;According to basic parameters, resistance parameter, inductance parameter and parasitic capacitance parameter, wideband equivalent circuit is constructed;According to wideband equivalent circuit, basic parameters, resistance parameter, inductance parameter and parasitic capacitance parameter, the voltage distribution under transient process is calculated, and the transient voltage distribution of ring type hollow reactor is obtained.The application can accurately and quickly determine the transient voltage distribution of reactor under lightning impulse voltage, improve the accuracy of reactor insulation performance evaluation, effectively solve the problem that frequency error is large and seriously depends on manual intervention in the calculation of transient voltage distribution in the prior art.

This invention relates to a continuous process for preparing ethylene carbonate from ethylene oxide using a centrifugal reactor, comprising a falling film reactor, a centrifugal reactor, a gas-liquid separator, a ethylene carbonate storage tank, a condenser, a vacuum pump, and a heater. The falling film reactor is connected to the centrifugal reactor, the gas-liquid separator is connected to both the centrifugal reactor and the falling film reactor, the gas-liquid separator is connected to the condenser, and the condenser is connected to the ethylene carbonate storage tank. This invention innovatively combines a centrifugal reactor with a falling film reactor, allowing for uniform dispersion and rapid dehydration of the liquid flowing out of the falling film. Crucially, the centrifugal reactor design eliminates the need for external heating, further reducing liquid temperature and minimizing side reactions. Under the process conditions of this invention, the conversion rate of ethylene oxide is >99%, and the selectivity of ethylene carbonate is >99.5%, exhibiting significant advantages such as low energy consumption, fewer byproducts, and high production efficiency.

Disclosed are methods which comprise the preparation of beta-lactones which provide for shorter reaction times with lower by-product formation. The method comprises contacting carbon monoxide with an epoxide in the presence of a carbonylation catalyst to form a reaction mixture under conditions such that the carbon monoxide distributed throughout the reaction mixture and the reaction mixture is substantially saturated with carbon monoxide. The reaction conditions and reactor designs are chosen to distribute the carbon monoxide throughout the reaction mixture and to maintain the reaction mixture as substantially saturated with carbon monoxide. Under these conditions the formation of beta-lactones over the formation of by-products is favored.

The utility model relates to the technical field of inorganic fluorination, in particular to a tubular fluorination reactor which comprises a reactor body, an upper barrel feeding bin is arranged at the upper end of the reactor body, a lower barrel solid waste collecting bin is arranged at the lower end of the reactor body, and a first copper pipe is wound on the outer side of the reactor body; a first copper pipe is wound on the outer side of the upper barrel feeding bin, a second copper pipe is wound on the outer side of the upper barrel feeding bin, the first copper pipe and the second copper pipe are communicated through a circulating pump, fins are arranged in the reactor body, a nitrogen inlet is formed in the bottom of the side wall of the upper barrel feeding bin, and a vacuum outlet and a solid feeding port are formed in the upper portion of the upper barrel feeding bin. A sieve plate is arranged between the reactor body and the solid waste collecting bin. Therefore, the tubular fluorination reactor can solve the technical problems of high energy consumption, poor heat dissipation effect, low reaction efficiency, serious material loss, high maintenance workload and the like of the traditional reactor design.

The invention relates to carrying out an enzymatically catalyzed condensation reaction in a hydrodynamic loop reactor with freely moving enzymes fixed to support particles and with a retention device for the catalyst particles. The loop reactor is fed via a mixer with a nozzle. The mixer with the nozzle mixes the liquid reactants immediately before they enter the reactor, without subjecting the catalyst to high shear forces. At the same time, the jet from the nozzle drives the free circulation of the catalyst particles in the loop reactor. The loop reactor reduces catalyst stress and denaturation and enables high conversion rates compared to other reactor designs. By using a hydrodynamic loop reactor with catalyst retention within the loop reactor, three-phase systems are avoided.

The invention relates to the technical field of reactor design and manufacturing, and provides a high-temperature and high-pressure miniature fluidized bed reactor and a manufacturing method thereof. The high-temperature and high-pressure miniature fluidized bed reactor comprises a reactor main body chamber which is an aluminum oxide ceramic tube; the porous gas distributor is arranged in the cavity of the reactor main body, the porous gas distributor is formed by firing corundum particles, and the porous gas distributor and the inner wall of the cavity of the reactor main body are sintered into a whole; wherein the aluminum oxide content of the aluminum oxide ceramic tube is 99%-99.9%, and the particle size of the corundum particles is 0.01 mm-3 mm. According to the high-temperature and high-pressure miniature fluidized bed reactor, the limitations that a quartz glass reactor is poor in pressure resistance, a stainless steel material is prone to high-temperature creep deformation and oxidation carburization, and a high-end alloy is too high in cost are solved, and safe, economical and reliable technical equipment is provided for fundamental research and industrial application of high-temperature and high-pressure gas-solid reaction.