12 results about "Chemical reaction engineering" patented technology

The application discloses a kind of atmospheric environment ozone concentration prediction system based on chemical reaction mechanism, including obtaining weather forecast parameter, historical observation data cleaning analysis, analysis screening suitable model, model training and prediction, prediction result analysis, data visualization and so on functional module composition.This system is based on Lagrangian coordinate system, establishes the response relationship between meteorological parameter, pollutant concentration and ozone concentration, using thermodynamic equilibrium principle, chemical reaction equilibrium principle and photochemical reaction principle and other basic chemical reaction engineering theory, deduces the non-linear model of meteorological parameter, pollutant concentration and other parameters on ozone concentration influence, by the independent design of each software function module, with low energy consumption, low carbon emission, low operating cost, data automatic processing, easy to deploy, can be connected ecological cloud platform, system expansibility is strong, maintenance is easy, and computing efficiency is high.Therefore, it has broad market application prospect and good social and economic benefits.

The invention discloses a Bayesian optimization-based hydrate reaction condition calculation method. The method comprises the following steps of S1, obtaining an initial data set through experimental measurement and numerical simulation; s2, establishing mathematical modeling of a hydrate reaction process based on chemical reaction engineering knowledge, and generating a simulation model; s3, constructing a proxy model by using a Bayesian optimization algorithm, and performing probability modeling and prediction on the target performance index to obtain performance distribution under a given experimental condition; s4, calculating and recommending optimal experiment parameters according to an expected improvement criterion; s5, performing an experiment or simulation under a recommendation condition, and merging new data into an existing data set; s6, repeating the steps of Bayesian optimization modeling, experiment recommendation and data updating until a predetermined termination condition is reached; and S7, outputting the optimized optimal reaction condition parameters and performance indexes. According to the method, the optimization efficiency and the data utilization rate are improved, multiple targets and complex constraints can be considered, and the scientificity and practicability of industrial process parameter optimization are remarkably enhanced.

The invention discloses a method for efficiently and continuously hydrogenating and synthesizing hydrogenated bisphenol A through an ultrasonic-assisted microreactor, and belongs to the technical field of chemical reaction engineering. Aiming at the problems of easy excessive hydrogenation of products and many byproducts caused by slow multiphase mass transfer speed and long reaction time in the hydrogenated bisphenol A synthesis process, the invention adopts an ultrasonic-assisted microreactor technology to further enhance the gas-liquid-solid three-phase mass transfer efficiency, reduce the reaction time and temperature, and improve the yield of hydrogenated bisphenol A. Therefore, high-efficiency hydrogenation is realized under mild conditions, and the product yield and safety are improved. Compared with a common hydrogenation reactor, the method is based on an ultrasonic-assisted microreactor strengthening strategy, the reaction time is shortened to be within 2 minutes, complete conversion of raw materials is achieved, and the product purity is higher than 99%. The method provided by the invention realizes continuous and automatic operation of bisphenol A hydrogenation reaction, has remarkable economical efficiency, green environmental protection property and safety, and is suitable for large-scale industrial production.

The invention relates to the technical field of chemical reaction engineering and equipment, and particularly discloses a glass fiber reinforced plastic reaction kettle with a uniform mixing function, the bottom of a device main body is provided with a reaction kettle main body, the top of the reaction kettle main body is provided with a top plate, and the top of the top plate is provided with a top cover; an adjusting hand wheel is arranged at the top of the top cover, a linkage shaft is arranged in the middle of the top plate, a driving cylinder is arranged in the middle of the linkage shaft, a counterweight disc is fixedly connected to the bottom of the driving cylinder, a main output disc is arranged at the top of the driving cylinder, and a stirring main shaft is arranged in the driving cylinder; an adjusting mechanism is arranged at the top of the top plate, a fixing plate is arranged in the middle of the adjusting mechanism, when torque is increased due to overload, axial force generated by the meshing face of the helical gear ring compresses the disc spring and pushes the linkage ring to move downwards, the axial force is amplified through the lever and then drives the speed adjusting mechanism, the stirring rotating speed is automatically reduced, and stable speed adjusting and system protection are achieved.

The invention discloses a liquid-phase organic reaction apparent dynamics modeling method based on a reaction calorimetry, and belongs to the technical field of chemical reaction engineering, and the method comprises the following steps: S10, obtaining a real-time reaction heat release rate in a reaction process, carrying out noise reduction processing on original heat flow data through a data smoothing algorithm, and obtaining concentration data of each component after each group of reaction is finished; s20, analyzing a reaction mechanism and a reaction path according to a reaction type, reaction conditions and reaction process characteristics; establishing a reaction kinetics ordinary differential equation set according to the target reaction formula; and S30, performing global search in the parameter space by taking the genetic algorithm as an optimization framework main body so as to search a parameter combination enabling the target function to be optimal, and obtaining a final optimization result. According to the method, accurate apparent kinetic parameters are obtained, and a model prediction result is highly matched with experimental data, so that a reliable theoretical basis is provided for reaction process optimization, amplification and safety control.

This invention provides a method for preparing 1,3-cyclohexanedimethylamine using a fixed-bed reactor, belonging to the field of chemical reaction engineering technology. The method involves dissolving 1,3-phenylenediamine and an auxiliary agent in solvent a to obtain a substrate solution. This solution is then purged with nitrogen and thoroughly mixed with hydrogen in a fixed-bed reactor containing a catalyst, under controlled temperature and pressure. After the reaction is complete, the solution is cooled under controlled temperature to obtain a 1,3-cyclohexanedimethylamine solution. The solvent is then removed under reduced pressure to obtain 1,3-cyclohexanedimethylamine. This method offers advantages such as precise feed, controllable temperature, mild reaction conditions, low energy consumption, excellent mixing effect, few side reactions, high production efficiency, stable product quality, low exhaust gas pollution, and is environmentally friendly.

The invention discloses an ultra-fast thermal injection hydrothermal synthesis device and a preparation method of a barite oxygen isotope standard substance, and belongs to the technical field of chemical reaction engineering. The hydrothermal synthesis device comprises a gas supercharger, a normal-temperature high-pressure kettle, a high-temperature high-pressure kettle, a first stop valve and a second stop valve. The preparation method of the barite oxygen isotope standard substance comprises the following steps: putting a barium chloride aqueous solution into a normal-temperature high-pressure kettle, and adding a sodium sulfate aqueous solution into the high-temperature high-pressure kettle; closing the second stop valve, opening the first stop valve, and heating the high-temperature high-pressure kettle; high-purity argon is injected into the normal-temperature high-pressure kettle to 20-50 MPa, the first stop valve is closed, the second stop valve is opened, the barium chloride solution is rapidly injected into the high-temperature high-pressure kettle, and the barite oxygen isotope standard substance is obtained after the reaction is conducted for 12 h. A pure water phase system is adopted, the problem of surface pollution caused by using an organic solvent and a surfactant in a traditional hot injection method is thoroughly avoided, and the obtained nano powder is high in purity.

The application provides a method for preparing 4,4'-diamino dicyclohexyl methane based on a circulation reactor continuous hydrogenation, and belongs to the technical field of chemical reaction engineering. The method is that 4,4'-diamino diphenyl methane is mixed with an organic solvent, heated through a preheater first, fully mixed with hydrogen in a gas-liquid mixer after reaching a certain temperature, forms a gas-liquid mixed fluid, and is subjected to hydrogenation reaction with a supported ruthenium catalyst and a deamination retarder in a circulation reactor to prepare 4,4'-diamino dicyclohexyl methane. The application adds the deamination retarder in the circulation reactor hydrogenation process, reduces the deamination side reaction of the target product, thereby improving the yield of the target product, reducing the production cost of the unit yield of the target product, and the reaction pressure is low, the safety is high, the production efficiency is high, and the method has important application value in the actual mass production in industry.

The present application relates to the technical field of chemical reaction engineering, and particularly relates to application of CO as discharge gas in plasma cracking of carbon-containing organic raw material to prepare conductive carbon black and a method for preparing conductive carbon black. The present application uses CO as discharge gas in plasma cracking of carbon-containing organic raw material to prepare conductive carbon black, which not only effectively solves the problems of low thermal conductivity of part of traditional discharge gas, insufficient cracking of raw material and low carbon black yield, improves process efficiency, but also solves the problem of generation of HCN in cracking of hydrocarbon substances by using N2 as discharge gas, and conforms to the concept of green chemistry. The'secondary heat release' mechanism generated after ionization can solve the problem of insufficient local area heating (additional external heating is needed) in the process of cracking of hydrocarbon substances, and saves process cost. Compared with nitrogen, the more stable voltage fluctuation and smaller cathode ablation rate provide support for industrialization.

The invention relates to the technical field of chemical reaction engineering, and discloses a controllable runoff heat transfer isothermal transformation system which comprises a runoff type reactor, a phase change heat transfer bundling pipe, a 'CPz centripetal flow' radial distributor and an automatic temperature control unit, a shell of the runoff type reactor is of a cylindrical high-strength alloy steel structure, the inner diameter of the shell is DN4200, and the diameter of the shell of the runoff type reactor is larger than that of the phase change heat transfer bundling pipe. The catalyst bed layer is supported by a plurality of layers of stainless steel meshes, and each layer is uniform in thickness and is provided with phase change heat transfer bundling pipes at intervals. By adopting the collaborative design of the radial flow type reactor and the phase change heat transfer bundle pipe and combining a temperature field distribution model, the temperature rise of the catalyst bed layer is controlled within an optimal reaction temperature zone, the maximum temperature rise is ensured not to exceed 5 DEG C by a temperature rise inhibition formula, the conversion per pass of the system is improved to 95%, and compared with a traditional adiabatic reactor, the energy is saved by more than 30%; and meanwhile, the pressure drop is reduced to 0.1 MPa or below by optimizing a fluid distribution model, so that the power consumption is obviously reduced.

The application provides a method for preparing 3,3'-dimethyl-4,4'-diamino dicyclohexyl methane based on fixed bed continuous hydrogenation, and belongs to the technical field of chemical reaction engineering. The method is that 3,3'-dimethyl-4,4'-diamino diphenyl methane is mixed with an organic solvent, heated through a preheater first, mixed with hydrogen in a gas-liquid mixer after reaching a certain temperature, forms a gas-liquid mixed fluid, and is subjected to hydrogenation reaction with a supported ruthenium catalyst and a deamination retarder in a fixed bed to prepare 3,3'-dimethyl-4,4'-diamino dicyclohexyl methane. The application adds the deamination retarder in the fixed bed hydrogenation process, reduces the deamination side reaction of the target product, thereby improving the yield of the target product, reducing the production cost of the target product per unit yield, and the reaction pressure is low, the safety is high, the production efficiency is high, and the method has important application value in the actual mass production in industry.

The application discloses a heterogeneous metal composite stamping micro-channel reactor diffusion welding method and relates to the technical field of chemical reaction engineering, and comprises the following steps: S1, stainless steel reaction channel structure preparation; S2, stamping die processing and specific metal sheet stamping; S3, channel diffusion welding; S4, post-processing and inspection; the stamping die processing and specific metal sheet stamping comprise the following steps: one, stamping die processing; two, specific metal sheet stamping. The application processes the reaction channel structure by adopting 304 stainless steel which has excellent diffusion welding performance and is low in price, then stamps the specific nickel-based high-temperature alloy sheet into the stainless steel reaction channel by using the stamping die, diffuses and welds the nickel-based high-temperature alloy sheet after stamping and the stainless steel reaction channel, thereby guaranteeing the welding quality, improving the welding qualified rate, simultaneously reducing the production cost of the micro-channel reactor and being suitable for various complex chemical reaction processes.