45 results about "Rates reactions" patented technology

The invention discloses an intelligent control and optimization system in aluminum hydrolysis hydrogen production, and relates to the technical field of automatic control, the system comprises a reaction kinetics analysis unit, a fluid field optimization unit and a self-adaptive intelligent control unit; the reaction kinetic analysis unit is used for obtaining the reaction rate of the aluminum powder according to the aluminum powder activity characterization parameters of the aluminum powder; according to the aluminum powder reaction rate, a hydrogen prediction rate is obtained, a bubble growth equation is constructed, and a bubble growth rate is obtained; the fluid field optimization unit is used for analyzing the mass transfer and heat transfer coupling effect in the reaction process, analyzing the influence of stirring on fluid movement, obtaining flow field speed distribution and predicting the reaction progress; and the self-adaptive intelligent control unit is used for dynamically adjusting the stirring speed according to the reaction progress, the reaction pressure, the hydrogen prediction speed, the flow field speed distribution and the aluminum powder activity characterization parameters. The utilization rate and the hydrogen production rate of the aluminum powder are improved.

The invention relates to the technical field of nano particle heterogeneous reaction kinetic research, in particular to a nano single particle reaction rate measuring system and method based on optical surface wave dark field imaging. The method comprises the following steps: preparing a nano single particle sample; the humidity of the environment where the nano single particles are located is adjusted; starting a heterogeneous reaction of the nano single particulate matter, performing in-situ dark field imaging on the nano single particulate matter in the reaction process, and collecting scattering hot spot imaging data under different reaction times and different humidity; and based on the acquired imaging data, the reaction rate of the nano single particulate matter is inversed in combination with a kinetic model. According to the invention, the defects in the existing nano-particle reaction rate measurement technology can be overcome, and the reaction rate of a single particle as low as 50 nanometers in the heterogeneous reaction process can be accurately measured and inverted under the high-humidity standard atmospheric pressure condition.

The invention relates to the technical field of isocyanate reaction, and discloses a reaction device for preparing o-tolyl isocyanate and a reaction method thereof.The reaction device comprises a reaction box, a cleaning and stirring mechanism is arranged in the reaction box and used for stirring and cleaning crystals adsorbed on the inner wall, an intermittent conveying mechanism is arranged on one side of the cleaning and stirring mechanism, and the intermittent conveying mechanism is arranged on the other side of the cleaning and stirring mechanism. The phosgene intermittent conveying device is provided with a clean stirring mechanism for intermittently conveying phosgene, the clean stirring mechanism is provided with a pressing discharging mechanism for pushing isocyanate to be rapidly discharged, it is guaranteed that reactants are evenly distributed in the whole reaction mixture through stirring, the local concentration is prevented from being too high or too low, and therefore the overall reaction efficiency and the product quality are improved; according to the reaction device, crystals can be shoveled down from the wall surface during stirring, the service life of the reaction device is prolonged, meanwhile, communication of the exhaust pipe is intermittently cut off, a communication hole in one side of the intermittent rotary table is communicated with the exhaust pipe, and the concentration of reactants in a reaction mixture can be adjusted by intermittently cutting off conveying of phosgene, so that the reaction rate is controlled.

The invention relates to a trazodone hydrochloride intermediate quality control method. The method comprises the following steps: constructing a real-time characteristic tracking system based on a reaction path through dynamic change of key chemical substance concentrations of reactants, an intermediate and a reaction product in a reaction process; the progress condition of the synthesis reaction is captured in real time by monitoring the concentration change of key substances on line; predicting the potential deviation of the intermediate quality according to the relationship between the reaction time and the key substance concentration; based on dynamic tracking of a reaction process, real-time reaction parameters including temperature, pressure and reactant concentration are combined, and an intelligent adjusting system is introduced; when it is monitored that the concentration of a certain reactant is too high, the reaction rate is changed by adjusting the temperature or the reaction time; the influence of each variable on quality fluctuation is traced by analyzing the relationship between key parameters and final quality in the reaction including catalyst dosage, solvent selection and reaction time and utilizing data analysis and a regression model.

The invention provides a device for preparing pentaerythritol through continuous condensation reaction and a reaction method thereof. The device comprises an enhanced reaction tower and a plug flow reactor which are connected in sequence, wherein a strengthening unit is arranged at the bottom in the strengthening reaction tower, an acetaldehyde feeding hole is formed in the lower part of the strengthening reaction tower, and the acetaldehyde feeding hole is formed in the lower part of the strengthening unit; an alkali liquor feeding hole, a formaldehyde feeding hole and a circulating feeding hole are sequentially formed in the upper part of the enhanced reaction tower from top to bottom; a discharge hole is formed in the bottom of the enhanced reaction tower; a spray layer is arranged at the top in the enhanced reaction tower, the spray layer is connected with the alkali liquor feed port, a liquid level sensor is arranged below the spray layer, and the liquid level sensor is arranged at a position 0.2-2 m below the spray layer; preferably, the liquid level sensor is arranged at the position 0.8 m below the spraying layer. According to the device disclosed by the invention, reactants are continuously fed, and products are continuously produced, so that the reaction rate is obviously accelerated.

The present invention relates to the technical field of denitrification agents, and in particular to a method for preparing a denitrification agent, wherein carbon dioxide, ammonia and water are subjected to a catalytic reaction in an organic solvent system to obtain a denitrification agent, wherein the catalyst is a Co-Ni catalyst. The reaction of the present invention increases the reaction rate under the action of a catalyst, greatly accelerates the reaction speed of the raw materials, and rapidly reacts to obtain micron-sized powder particles; the particle size of the denitrification agent generated by the reaction is concentrated in the range of 1-2 μm, which greatly accelerates the decomposition speed of the denitrification agent during use; the denitrification agent generated by the reaction has a high reaction activity, and according to experimental tests, it can be rapidly decomposed at 100-150° C., and the ammonia yield is greater than 95%.

The invention discloses a dynamic behavior analysis method and system for kiln high-temperature synthesis, and relates to the technical field of high-temperature material synthesis monitoring, and the method comprises the steps: obtaining time sequence data through a high-frequency temperature sensor, a reaction intermediate detector and a flue gas component monitor, and carrying out the feature extraction; the micro-scale adopts molecular dynamics simulation to obtain local reaction dynamic behaviors, and the macro-scale simulates kiln temperature distribution based on a finite element method; fusing the feedback relationship between the local reaction rate and the temperature distribution by using multi-scale coupling; dividing the high-temperature synthesis process of the kiln into a plurality of continuous recognizable states, judging whether a state jump condition is met or not, and performing multi-objective optimization iteration to obtain a dynamic behavior analysis result and phase change stage judgment. According to the method, dynamic feedback of the reaction rate and the temperature field is realized, key inflection points and phase change characteristics can be accurately captured, the fitting precision of kinetic parameters is remarkably improved, and the robustness and the adaptive capacity of the model are enhanced.

The invention relates to the field of spiral conveying equipment, in particular to a spiral conveyor for perchloric acid production, and solves the problems that the internal temperature of the spiral conveyor is uniform, the phenomenon that the stability and efficiency of the whole reaction process are affected due to the fact that the reaction rates of different parts are inconsistent is avoided, and the stirring angle can be adjusted so as to adapt to different reaction rates. Comprising a conveying pipe and a driving motor, the outer wall of the conveying pipe is slidably connected with a sliding plate, and the sliding plate is connected with the output end of the driving motor. The phenomenon that water drops on the outer wall of the conveying pipe are hung on the wall unevenly can be avoided, the phenomenon that the reaction rates of all areas are different due to the difference of the internal temperature is prevented, the driving motor can synchronously drive the sliding plate to scrape the outer wall of the conveying pipe when driving the spiral shaft to conduct spiral conveying, the situation that heat dissipation is affected by water drop gathering is avoided, and the service life of the conveying pipe is prolonged. And meanwhile, automatic adjustment can be performed through the stirring blades, so that stirring at different reaction rates is met.

The invention discloses a machine learning assisted acetic acid reaction rate prediction model training method and device and a prediction method. The machine learning assisted acetic acid reaction rate prediction model training method comprises the following steps: acquiring an enhanced data training set; extracting a training feature vector of the enhanced data training set; obtaining a classification promotion regression model for the acetic acid reaction rate; and training the classification lifting regression model for the acetic acid reaction rate through the feature vectors for training so as to obtain the trained classification lifting regression model for the acetic acid reaction rate. According to the method, a model relationship between input characteristics and acetic acid reaction rates (including reactant mass, catalyst mass, methyl acetate concentration and the like) is established through training set learning. A user can directly obtain the prediction result of the acetic acid reaction rate by inputting the characteristic variables.

The application relates to the field of carbon dioxide resource utilization, and discloses a numerical simulation method, device and equipment for a carbon dioxide resource utilization reaction, wherein the method comprises the following steps: a flow field simulation model and a reaction simulation model of the carbon dioxide resource utilization reaction are established; reaction component concentration and a reaction rate are obtained; based on the reaction component concentration, the flow field simulation model is analyzed in a steady state to determine stable flow field data of the resource utilization reaction; based on the reaction rate and the stable flow field data, equivalent stable time of the resource utilization reaction is determined; based on the reaction rate and the equivalent stable time, the reaction component concentration is corrected; based on the corrected reaction component concentration and the stable flow field data, the reaction simulation model is analyzed in a transient state until the resource utilization reaction ends, so that a numerical simulation result of the resource utilization reaction process is obtained. The technical scheme provided by the application can improve the simulation accuracy and simulation efficiency of the numerical simulation process for carbon dioxide resource utilization.

The present invention discloses an amination reaction device for the synthesis of benzonitrile products, which relates to the field of benzonitrile product production. The device includes a reaction kettle, a bracket and a motor. A bracket is fixed at the upper end of the reaction kettle, and a motor is fixed on the bracket. A driving gear and a stirring mechanism are fixed on the output shaft of the motor. The stirring mechanism includes a cylinder, which is fixed on the output shaft of the motor. The output end of the cylinder is fixed with a driving rubber wheel, and a movable block is connected to the lower end of the driving rubber wheel through a bearing. The amination reaction device for the synthesis of benzonitrile products adopts a stirring mechanism with automatic speed regulation, which can not only adjust the stirring speed of the materials according to the actual mixing requirements of different products, improve the adaptability of the device, but also reduce the stirring speed when the temperature in the reaction kettle is too high or the pressure is too large during the amination reaction of the same product, so as to reduce the reaction rate of the raw materials and ensure the normal operation of the device.

The present invention provides a method, device, equipment and storage medium for online evaluation of denitration catalyst performance, which relates to the technical field of denitration catalytic reaction control. The method comprises: obtaining the inlet reactant concentration and reaction condition data of the denitration catalytic reaction; taking the inlet reactant concentration and reaction condition data as input, predicting the theoretical reaction rate of the reactant through a reaction rate model; taking the inlet reactant concentration and reaction condition data as input, obtaining the actual reaction rate of the reactant through a reaction rate mechanism model; taking the theoretical reaction rate of the reactant as the first input, taking the actual reaction rate of the reactant as the second input, outputting the theoretical performance evaluation value and the actual performance evaluation value of the catalyst through a catalyst performance evaluation model, and determining the performance state of the current catalyst based on the theoretical performance evaluation value and the actual performance evaluation value of the catalyst. The present invention solves the problem that the existing model has low accuracy and is difficult to be practical in engineering.

The invention provides a method for detecting impurities in a reaction process of N-(carbobenzoxy)-L-tyrosine methyl ester, which comprises the following steps: in the reaction process of the N-(carbobenzoxy)-L-tyrosine methyl ester, if a plurality of other unknown substances are generated if the feeding proportion, the temperature, the dripping speed and the like are not controlled well, the impurities are detected to be detected; unknown impurities generated in the process have certain influence on the purity of a sample, production equipment can completely remove reaction raw materials or degradation products, but the impurity removal capacity is limited for a small amount of generated impurities which are equivalent to main products in property, and the production equipment can be used for improving the reaction rate, exploring the optimal reaction conditions and monitoring other impurities generated in the reaction process. And performing qualitative analysis on impurities, and performing auxiliary detection by using a high performance chromatography-ultraviolet detection method. The detection method has the advantages of high sensitivity, almost no detection interference, good accuracy, short analysis time and the like, and can effectively overcome the defects in the prior art. The method can be used for detecting the reaction process of N-(carbobenzoxy)-L-tyrosine methyl ester and related substances of the product.

The invention relates to the technical field of micro-channel reaction, and discloses a micro-channel reaction structure and a heat exchange device.The micro-channel reaction structure comprises a reaction shell, and a liquid inlet runner, a liquid outlet runner and a plurality of mixing runner units connected in sequence are formed in a reaction plate; the plurality of mixing flow channel units are sequentially connected to form the 8-shaped mixing channel, and the cross flow guide structures arranged in the mixing flow channel units can introduce continuous disturbance in the flowing process of fluids, so that the transverse mixing among the fluids is obviously enhanced, and the mixing efficiency is improved; by improving the flow field structure in the micro-channel, more sufficient mixing and more efficient mass transfer are realized, so that the reaction rate is increased, the conversion efficiency and yield of the product are improved, and the micro-channel is suitable for various micro-reaction processes requiring accurate control of reaction conditions.

The utility model relates to the technical field of compound processing and production, and discloses a reaction tank for producing barium chloride, including a reaction chamber, the top of the reaction chamber is fixedly connected with a top cover, the bottom inner wall of the top cover is rotatably connected with an outer toothed ring, the bottom outer wall of the outer toothed ring is fixedly connected with a U-shaped stirring rod, a cleaning component is arranged on the U-shaped stirring rod, the two side walls of the reaction chamber are fixedly connected with a motor and a water pump, the output end of the motor is fixedly connected with a transmission gear, the top outer wall of the top cover is fixedly connected with an annular waterway, the bottom outer wall of the annular waterway is rotatably connected with a water blocking ring, a rotating water pipe is rotatably connected to the water blocking ring, and the other end of the rotating water pipe is fixedly connected to the top of the side wall of the U-shaped stirring rod. In the utility model, the U-shaped stirring rod is designed with a water spray port while stirring to accelerate the reaction rate, which can realize self-cleaning, and a conical plug is slidably connected at the discharge port to facilitate flow control.

The application provides a measuring device and a measuring method for interfacial reaction intrinsic kinetics. The measuring device for interfacial reaction intrinsic kinetics comprises a reaction disc, the reaction disc is provided with a reaction channel, a first liquid inlet channel, a second liquid inlet channel, a first liquid outlet channel and a second liquid outlet channel, the first liquid inlet channel and the second liquid inlet channel are communicated with the inlet of the reaction channel, and the first liquid outlet channel and the second liquid outlet channel are communicated with the outlet of the reaction channel; a centrifugal driving member is connected with the reaction disc to drive the rotation of the reaction disc; a first conveying pump is used for conveying a first fluid to the first liquid inlet channel; a second conveying pump is used for conveying a second fluid to the second liquid inlet channel; a first collecting device is used for collecting the reacted first fluid; and a second collecting device is used for collecting the reacted second fluid. The measuring device for interfacial reaction intrinsic kinetics can decouple the mass transfer and the reaction rate in a heterogeneous reaction, so that the interfacial intrinsic reaction rate is obtained.

The invention discloses an amination reaction device for synthesizing cyanophenyl products, and relates to the field of cyanophenyl product production, the amination reaction device comprises a reaction kettle, a support and a motor, the support is fixed at the upper end of the reaction kettle, the motor is fixed on the support, a driving gear and a stirring mechanism are fixed on an output shaft of the motor, the stirring mechanism comprises an air cylinder, and the air cylinder is fixed on the support. The air cylinder is fixed to an output shaft of the motor, a driving rubber wheel is fixed to the output end of the air cylinder, and a movable block is connected to the lower end of the driving rubber wheel through a bearing. According to the amination reaction device for synthesizing the cyanophenyl product, the stirring mechanism capable of automatically adjusting the speed is adopted, so that the stirring speed of materials can be adjusted according to actual production and mixing requirements of different products, the adaptability of the device is improved, and in the amination reaction process of the same product, when the temperature or the pressure in the reaction kettle is too high, the stirring speed can be adjusted; by reducing the stirring speed, the reaction rate of the raw materials is reduced, so that normal operation of the device is ensured.

The utility model discloses a feeding device with a pretreatment function for catalyst production, which comprises a reaction tank, a feeding device and a feeding device, wherein a top cover is fixedly arranged at the top of the reaction tank; the feeding pretreatment assembly is arranged in the middle of the top cover, is used for performing premixing treatment on a solid-liquid mixture entering the reaction tank, and comprises a mixing tank fixedly connected to the middle of the top cover. According to the utility model, the continuous vibration of the crushing cone is matched with the fixed cone to crush the solid raw material falling into the mixing tank, and the solid raw material falls to the discharge pipe along with the liquid through the bottom of the reaction tank, and the eccentric sleeve drives the spiral blade to rotate through the linkage shaft; the reaction tank has the advantages that the reaction tank is simple in structure, the mixture is reversely conveyed to prolong the staying time of the mixture in the discharge pipe, the mixture can be mixed again, the reaction rate of reactants in the reaction tank is increased, and the production efficiency of the catalyst is improved.

A technology is provided for automatically conducting a reaction rate test under the same flow conditions while varying the residence time in catalyst beds. In this test device for conducting a reaction rate test for a chemical reaction proceeding in the presence of a catalyst, sample supply units 31 and 411 supply a sample to be supplied to catalyst at a preset flow rate, and a plurality of reaction vessels 2a to 2f each contain a catalyst bed filled with the catalyst. Supply-side switching valves 61, 62 connect supply flow paths through which the sample is supplied to the reaction vessel 2e, which is a supply destination, and an outflow-side switching valve 63 connects a sample flow path 701 for collecting the sample for analysis to the reaction vessel 2e, which is an outflow point where the sample drains from the catalyst bed.A control unit 11 performs switching control on the reaction vessels 2a to 2f, which are supply and discharge points, by means of the supply-side switching valves 61, 62 and the outlet-side switching valve 63 so that the reaction rate test is carried out under at least three sets of conditions with different residence times in the catalyst beds.

A testing apparatus and method are provided for automatically performing reaction rate tests while varying the residence time in a catalyst bed under the same flow conditions. In the testing apparatus for testing the reaction rate of a chemical reaction proceeding in the presence of a catalyst, a sample supply unit supplies a sample to the catalyst at a preset flow rate, and multiple reaction vessels each include a catalyst bed filled with the catalyst. A supply-side switching valve is connected to a supply flow path for the sample to be supplied to the reaction vessel that is the target of the supply, and an outflow-side switching valve is connected to a sample flow path for collecting samples for analysis to the reaction vessel that is the source of the outflow from the catalyst bed. A control unit controls the switching between the target and source reaction vessels via the supply-side and outflow-side switching valves, enabling reaction rate tests to be performed under at least three conditions with different residence times in the catalyst bed.

The application belongs to the field of computational theoretical chemistry, and discloses a method for rapidly predicting natural chemical connection reaction rate by using a machine learning model.The method comprises the following steps: firstly, synthesizing a series of peptide thioesters containing different thioester groups to construct a peptide thioester library; then, determining the natural chemical connection reaction rates of different peptide thioesters as sample labels; subsequently, analyzing the influence of structure on the reaction rate of the peptide thioester through quantum structure optimization to obtain the feature descriptor of each sample from the calculation simulation; finally, based on the feature descriptor and the sample label, a formula of structure-function relationship is summarized by using a computer learning algorithm, so that the influence of the structure of the peptide thioester on the natural chemical connection reaction rate can be rapidly predicted.The method greatly improves the work efficiency, the result is accurate, the reproducibility is good, and the method is convenient to popularize and apply.

The present invention relates to a computer-implemented method of calculating the ranges of concentrations, of fluxes, or of reaction rate constants in a network of chemical reactions.

The utility model provides an organic chemical reaction device and belongs to the technical field of organic chemical reaction devices. Comprising a bottom plate, an ultrasonic generator assembly is arranged on the left side of the top surface of the bottom plate, a reaction kettle assembly is arranged at the top of the ultrasonic generator assembly, a cleaning assembly is arranged on the right side of the top surface of the bottom plate, and one end of the cleaning assembly is connected with a filter pipe assembly. According to the ultrasonic enhanced reaction device disclosed by the utility model, the whole ultrasonic enhanced reaction device can be presented by arranging the ultrasonic generator, the ultrasonic generator is additionally arranged on the basis of a conventional reaction container, and the ultrasonic generator generates high-frequency mechanical vibration waves, converts the high-frequency mechanical vibration waves into ultrasonic energy through the transducer and transmits the ultrasonic energy to a reaction system. Molecular motion of reactants is accelerated, the reaction rate is increased, the reactants can be effectively dispersed, heterogeneous reaction is promoted, operation is simple, and integration with an existing reaction device is easy.

The invention relates to a life prediction method and device for an alkane dehydrogenation to olefin catalyst and computer equipment. The method comprises the following steps: acquiring a catalyst state and reaction information; establishing a primitive reaction network according to the reaction information; performing density functional calculation according to the primitive reaction network to obtain adsorption energy data and surface energy data; performing continuous processing according to the adsorption energy data to obtain reaction energy data; performing BEP relation calculation according to the reaction energy data to obtain energy barrier data; carrying out microdynamics calculation according to the reaction energy data and the energy barrier data to obtain a reaction rate function relationship; obtaining a loss rate function relationship according to the surface energy data and the reaction rate function relationship; and calculating according to the reaction rate function relationship, the loss rate function relationship and the catalyst state to generate a mechanism prediction life curve of the catalyst.

The application discloses a heat-triggered water-based carbodiimide crosslinking agent composition and application thereof. By introducing a latent acid and setting an alkaline environment during storage, the hydrolysis of carbodiimide and the pre-reaction of carbodiimide and carboxyl are simultaneously inhibited from the kinetic aspect, and the system is 'frozen' in a stable state. When used, the latent acid is triggered to decompose by heating, and the system pH is suddenly reduced to acidity by instantaneous release of protons, which not only quickly protonates and activates the carbodiimide, but also creates an optimal kinetic window in which the reaction rate of carbodiimide and carboxyl is much faster than the hydrolysis reaction, thereby accurately, synchronously and efficiently guiding the reaction path to the target crosslinking direction, and realizing the unification of'stable storage' and 'on-demand efficient reaction' in a single component.

The application discloses a mechanism-guided cascade reactor dynamic modeling and transfer learning method and device, and belongs to the technical field of chemical engineering and artificial intelligence, and comprises the following steps: residence time and input variables are taken as inputs of a reactor inlet, are processed through a reaction rate learning module, and finally the remaining reactant concentrations of different reaction microelements after corresponding residence time are obtained; flow and residence time are taken as input parameters and are input into a residence time distribution learning module; the module processes the parameters, and outputs the residence time probability distribution under the conditions of corresponding flow and residence time; the remaining reactant concentrations output by the reaction rate learning module and the corresponding probability distribution output by the residence time distribution learning module are subjected to weighted summation through a reactor output module, and finally the reactant concentration at the reactor outlet is obtained.

The utility model relates to an experimental device for controlling reaction rate by utilizing an electric field, in particular to the field of experimental equipment, and adopts the technical scheme that the experimental device comprises a reaction container and an electrode, one end of the electrode is connected with a power line, a pressure relief pipe is mounted on one side of the upper end of the reaction container, and a sealing cover is mounted outside the pressure relief pipe; the reaction device has the advantages that when pressure gas in the reaction container is too large, the pressure gas jacks the movable plug upwards through the pressure relief pipe, at the moment, the movable plug moves upwards through the positioning seat to extrude the buffer spring to deform, the buffer spring is pressed, and the gas storage component is arranged on one side of the reaction container, so that the gas storage component is arranged, and the guide components are symmetrically arranged on the two sides of the outer end of the gas storage component. When the movable plug moves upwards and leaks out of the through hole, gas in the reaction container flows into the sealing cover through the pressure relief pipe and the through hole, then the gas is input into the gas storage tank through the gas conveying pipe to be stored, and the phenomenon that the reaction container explodes or the leaked pressure gas is diffused into surrounding air is avoided.

The invention provides a micro-channel reactor, a micro-channel reaction circulation system and a reaction method, and relates to the technical field of micro-channel reaction.The micro-channel reactor comprises a gas plate, a liquid plate and a diffusion layer, and the gas plate and the liquid plate are oppositely arranged and connected; the diffusion layer is installed between the gas plate and the liquid plate, the gas plate is provided with a gas flow channel facing the diffusion layer, and the liquid plate is provided with a liquid flow channel facing the diffusion layer. By adopting the micro-channel reactor, reactants can be uniformly mixed within a short time, the specific surface area is increased, the heat transfer and mass transfer processes can be efficiently carried out, the reaction is more sufficient, and the reaction rate is increased.

The utility model relates to the technical field of ethylene glycol hydrogenation reactors, in particular to an ethylene glycol hydrogenation reactor which comprises a device body, the device body is provided with a connecting mechanism, the connecting mechanism comprises connecting assemblies arranged on the two sides of the device body, and a reaction assembly is arranged in the middle of the device body. A filter assembly is arranged at the lower section of the device body, and the reaction assembly comprises a reaction tank fixedly mounted on the inner wall of the middle section of the device body. Through cooperation of a fixing sleeve, a hinged connecting rod, a limiting sliding block and a scraping plate, materials on the inner wall of the reaction tank can be scraped and swept, meanwhile, a rotating roller rolls in the materials, and all-directional and multi-angle stirring and mixing are achieved; the efficient stirring mode enables reactants to be in full contact, the reaction rate is remarkably increased, the uniformity and thoroughness of the reaction are improved, the quality and purity of products are improved, and compared with a traditional reactor, the problem that the stirring and mixing effect is poor is effectively solved.

The embodiment of the invention discloses a method for preparing metal powder through gas short-distance flow reduction, which comprises the following steps: a plurality of reaction boats are sequentially and continuously arranged in a furnace tube of a continuous production device along the length direction of the furnace tube, and gas inlet parts and gas exhaust parts are respectively arranged on two sides of the reaction boats; one end of the gas inlet component is closed, the other end of the gas inlet component is communicated with a reaction gas source, and a plurality of first through holes at uniform intervals are formed in the side wall, close to the reaction boat, of the gas inlet component; the center positions of the first through holes are higher than the reaction boats, and one reaction boat at least corresponds to one first through hole; one end of the exhaust part is closed, the other end of the exhaust part is provided with an exhaust port, and the side wall, close to the reaction boat, of the exhaust part is provided with a plurality of second through holes at uniform intervals; the central positions of the second through holes are higher than the reaction boats, and one reaction boat at least corresponds to one second through hole; the first through hole corresponds to the second through hole in position; the flow distance of the reaction gas in the reaction zone above the materials is short, the chemical reaction conditions of other material reaction zones are not influenced, the concentration gradient of the generated gas is effectively reduced, the reaction rate is high, the product granularity is uniform, and the oxygen content is low.