15results about How to "Small amplification effect" patented technology

The invention discloses a method for preparing long-chain fatty primary amine, which comprises the following steps of: conveying halogen, sodium hydroxide and long-chain fatty amide slurry which are mixed and fully reacted at low temperature into a micro-channel reactor, and initiating partial vaporization of a solvent to form gas-liquid Taylor flow through rapid overheating of reaction liquid; after the reaction is finished, rapidly cooling through a cooling section, entering a continuous extractor, carrying out continuous liquid-liquid separation on an effluent mixed solution, and distilling an organic phase to obtain a high-purity long-chain fatty primary amine product. The method can effectively solve the problems of many side reactions, poor selectivity, tedious steps, low production efficiency and the like in the existing kettle type process, significantly improves the yield and selectivity of the target product, reduces the treatment cost of three wastes, and has the advantages of simple operation, efficient reaction, intrinsic safety and the like.

The invention provides a copper-based adsorbent and application thereof in a glove box purification column, and belongs to the technical field of catalysts containing metals or metal oxides. The method comprises the following steps: adding active metal salt into a solvent, mixing and dissolving to obtain a mixed metal salt solution, mixing and dissolving a precipitant and the solvent to obtain a precipitant solution, co-precipitating the mixed metal salt solution and the precipitant solution, and separating, drying and calcining the obtained precipitate to obtain the supported copper-based adsorbent with the size phi of 1.8-6 mm. The copper-based adsorbent provided by the invention has good oxygen removal performance and regeneration capacity, can be continuously produced and is short in reaction time.

The present invention provides a method for preparing highly dispersed metal powder and a device for preparing highly dispersed metal powder. The method comprises the steps of (1) adding a base liquid into a synthesis reactor, and performing internal and external circulation of the synthesis reactor through an external circulation dispersion device connected to the synthesis reactor to achieve a stable circulation; (2) after the stable circulation meets a predetermined requirement, continuously adding an oxidizing liquid and a reducing liquid into the synthesis reactor to mix with the base liquid to form a reaction liquid, and continuously passing the reaction liquid through the external circulation dispersion device for forced dispersion, and then feeding it into the synthesis reactor; (3) performing sampling analysis and testing during the synthesis reaction, and when the particle size of the metal powder generated by the synthesis reaction meets the requirement, stopping the addition of the oxidizing liquid and the reducing liquid to stop the synthesis reaction; and (4) discharging the reaction liquid from the synthesis reactor, performing solid-liquid separation, cleaning, post-treatment, and drying to obtain highly dispersed metal powder.

The present invention relates to the field of chemical synthesis technology, and in particular to a continuous flow reaction method for asymmetric allylic alkylation reaction, comprising: S1: sending the substances participating in the template reaction into the continuous flow reaction system in a split flow path; the substances participating in the template reaction include reaction substrates, nucleophiles and catalysts; the nucleophiles are Grignard reagents; the catalysts include copper salts, chiral ligands and solvents; the continuous flow reaction system includes a material transport unit, a mixing unit, a reaction unit and a collection unit; the reaction unit includes a reactor and a temperature control module; S2: adjusting the reaction parameters to obtain the asymmetric allylic alkylation reaction product. The present invention uses Grignard reagents as nucleophiles, selects inexpensive and low-toxic monovalent copper salts and chiral ligands as catalysts, and makes the reaction safer, the reaction conditions milder, easier to operate, and greatly shortens the reaction time by means of continuous flow, making it easier to achieve scale-up production.

The application discloses a kind of image edge detection methods of biological retina multiscale receptive field iteration in the field of image processing and computer vision, including obtaining image to be handled, and pre-processing image to obtain input image.The application is by with center point belonging to an edge edge point in local slice and center point is classified as first edge, the rest is classified as second edge;Subsequently, with the tangent of center point, local slice is divided, and in the partition, from center point outwardly emit ray, if the direction of ray exists second edge point, then the average value of image value in the region within second edge is assigned to the region outside second edge, form compensation slice, the compensation operation is corrected to the pixel distribution in the detection process in adjacent second edge direction, so that the response of center point when subsequent second derivative is reconvolved is weakened, the positioning stability under adjacent interference is improved, positioning deviation caused by adjacent edge interference, multiscale result inconsistency and other problems are avoided.

The present invention discloses a multi-sensor fusion processing method based on a distributed optoelectronic system, and relates to the technical field of data analysis. The method of the present invention comprises: extracting historical data of optoelectronic system sensors, establishing an error model, evaluating error propagation coefficients, and matching error correction schemes; acquiring raw sensor data, unifying the format, and cleaning the data to form a preliminary target data set; performing similarity analysis on the target data set, matching the error correction scheme, correcting the data, analyzing the error propagation coefficients, and outputting prompt information; evaluating data quality, enhancing the data, and storing the enhanced data; extracting sensor data features, fusing features, generating comprehensive data feature representations, and realizing multi-sensor fusion processing.

This invention discloses an internal and external dual-circulation airlift aerobic fermentation device, relating to the field of microbial aerobic fermentation. The device includes a gas conveying system, a fermenter, a circulating pump, a circulating cooler, a liquid distributor, a liquid-gas jet emulsification device, a gas distributor, a guide tube, an internal coil heat exchanger, and a circulating liquid suction device. This invention utilizes multiple centrally symmetrical liquid-gas jet emulsification devices within the fermenter, employing high-speed liquid flow to strongly shear and collide with the gas phase, breaking the air into micron-sized fine bubbles, thus significantly increasing the gas-liquid contact surface area. Simultaneously, the use of rotating jets and a guide tube design ensures thorough mixing of the gas and liquid phases during the jetting process, forming an innovative internal and external dual-circulation mode. This invention combines the advantages of traditional mechanical stirring and airlift fermenters, significantly improving the production capacity and oxygen utilization rate of the fermentation device while substantially reducing energy consumption.

The invention is suitable for the technical field of power transaction data processing, and provides a power transaction data full-link standardization processing method and system, and the method comprises the steps: determining a remaining time interval corresponding to a completion behavior characteristic index of a target completion execution main body when different sample sets correspond to different remaining time intervals, and when the target completion execution main body executes subsequent missing data completion processing consistent with the service type, preferentially distributing the data completion task of which the predicted remaining time falls into the remaining time interval to the target completion execution main body. According to the method, an existing completion mode and an auditing mechanism are not changed, and reasonable distribution of completion tasks is realized through accurate matching of the tasks and time conditions, so that the amplification effect of completion errors in an exception recognition stage is effectively reduced, and the stability and consistency of exception recognition results are improved. The method can be stably operated in a large-scale and batch data processing scene.

The invention relates to the technical field of energy scheduling, and provides a comprehensive energy scheduling optimization method and system for a green power direct connection park, which can accurately describe the synchronous fluctuation characteristics of source load uncertainty and reduce the amplification effect of prediction deviation by constructing a hybrid prediction model, performing combined modeling and predicting park load and upstream green power output, and can improve the scheduling efficiency of the green power direct connection park. And the response capability to the dynamic change of the source load is improved. Meanwhile, for the problem that a traditional optimization algorithm is prone to falling into local optimum in a high-dimensional nonlinear system, a wind-sensitive golden-spot butterfly optimization algorithm is introduced, higher global search and convergence performance is achieved, and a scheduling solution with better quality and smaller fluctuation can be obtained under multiple constraints and multiple targets; and in combination with an energy efficiency-economic equilibrium corridor decision-making mechanism, an optimal compromise strategy giving consideration to both operation stability and economy is screened out from the candidate schemes, so that the scheduling efficiency, economy and performability of the integrated energy system of the green power direct connection park are improved.

The application discloses a kind of denial under spatiotemporal enhancement positioning method and system, the method includes the following steps: spatiotemporal enhancement positioning system configuration microwave synchronous base station and user terminal equipment, user terminal equipment includes inertial measurement unit and microwave antenna module;Establish local space-time reference of user terminal equipment;Time mark, inertial navigation solution is carried out, constructs unified state vector, obtains key output through clock error clock drift joint model;According to the two-way ranging interaction constructs ranging observation, constructs observation equation, and carries out filtering update, outputs correction quantity feedback;Carry out closed-loop correction, output fusion positioning result.This scheme constructs the space-time reference collaborative architecture of "microwave synchronous base station-user terminal equipment", receives end clock error and clock drift are included in unified state vector and are recursively estimated, from the root, the core defect that traditional fusion positioning scheme ignores clock drift error accumulation is solved.

This invention relates to a continuous flow synthesis method for hydroquinone, a chemical and pharmaceutical intermediate, belonging to the field of chemical intermediate synthesis. The method for preparing hydroquinone uses phenol as a starting material, which undergoes oxidation to obtain p-benzoquinone, followed by hydrogenation reduction to obtain hydroquinone. Both steps are performed in a microreactor system. The synthesis method includes the following steps: (1) Phenol, catalyst 1, and organic solvent are prepared as component A, and an oxidant is used as component B. A and B react in a microchannel reactor 1 to obtain intermediate I benzoquinone; (2) Intermediate I benzoquinone is mixed with an organic solvent and reacted with hydrogen in a microchannel reactor 2 under the action of catalyst 2 to obtain hydroquinone. This invention utilizes a microreactor system with excellent heat and mass transfer performance, significantly shortening the reaction time. Both steps are completed within 50 minutes, and the reaction efficiency is high, energy consumption is low, safety is high, automation is high, and the environment is environmentally friendly.

The present invention provides a method for preparing metal powder by using a high-dispersion synthesis reactor and a high-dispersion metal powder preparation device. The method comprises: adding a base liquid into a circulation regulating reactor, and performing internal and external circulation through a high-dispersion synthesis reactor connected to the circulation regulating reactor to achieve a stable circulation; after the stable circulation meets the predetermined requirements, continuously adding an oxidizing liquid and a reducing liquid into the high-dispersion synthesis reactor for a synthesis reaction, during the synthesis reaction, the reaction liquid is continuously sent into the high-dispersion synthesis reactor for forced dispersion, and performs a synthesis reaction therein with the oxidizing liquid and reducing liquid that are continuously newly added to the high-dispersion synthesis reactor; sampling analysis and testing are performed, and when the particle size of the metal powder generated by the synthesis reaction meets the requirements, the addition of the oxidizing liquid and the reducing liquid is stopped to stop the synthesis reaction; after the reaction liquid is discharged from the circulation regulating reactor, solid-liquid separation, cleaning, post-treatment, and drying are performed to obtain a highly dispersed metal powder.

This invention relates to a method for synthesizing hydroquinone, a pharmaceutical and chemical intermediate. The invention comprises the following steps: (1) hydrolysis of p-chloronitrobenzene in an alkaline solution, adjusting the pH to 5-6 with acid to obtain p-nitrophenol; (2) reduction of p-nitrophenol and hydrogen under catalytic conditions to obtain p-aminophenol; (3) diazotization of a dilute acid solution of p-aminophenol with sodium nitrite; the reaction solution reacts with a dilute acid solution used for hydrolysis to obtain hydroquinone; after the reaction, solvent extraction is performed, followed by concentration, centrifugation, and drying. The reactions are carried out in a microreactor system. Compared with existing hydroquinone production processes, this invention uses continuous flow technology for continuous production, greatly improving production efficiency and saving production costs. It solves the problems of high levels of waste, low selectivity, and high purification costs associated with traditional batch processes. Furthermore, the continuous flow production process has a lower scale-up effect, easier process control, and is suitable for industrial production.

This utility model discloses a micro-volume confluence mixing reaction device, solving the technical problem that existing microchannel emulsification reaction devices are prone to blockage or damage under high temperature or corrosion-resistant conditions, resulting in discontinuous emulsification reactions. It includes a support frame, a confluence mechanism assembly, and a confluence tank. A diaphragm pump draws material from a storage tank and transports it to the confluence mechanism assembly, which then transports the material to the confluence tank for confluence. The confluence mechanism assembly includes a confluence plate body and multiple sets of confluence port devices mounted on the confluence plate body. Each set of confluence port devices has a pipe installation channel communicating with the confluence tank. An inlet regulating pipe is connected to the upper inlet of the pipe installation channel of each set of confluence port devices, and an outlet manifold is connected to the lower outlet. The lower part of the outlet manifold extends into the confluence tank, and the lower part of the inlet regulating pipe is sealed to the outlet manifold. This device can be widely used in the field of microchemical reaction equipment technology.

The invention relates to the technical field of spacecraft detection, in particular to a gradual heat map refinement spacecraft pose estimation system and method.The method is characterized in that a feature extraction and fusion module extracts multi-scale features from an image of a target spacecraft and performs cross-scale fusion on the multi-scale features to obtain multi-scale fusion features; in the key point prediction process of each stage, the multi-stage key point prediction module detects key points of the spacecraft by using a key point detection head based on fusion features of corresponding sizes, and connects an obtained key point heat map with a key point heat map residual obtained in the previous stage to obtain a key point heat map of the current stage; and the key point screening and pose solving module screens two-dimensional key points in the final key point heat map according to the response values, finds three-dimensional coordinates in one-to-one correspondence with the two-dimensional key points and the three-dimensional key points, and analyzes an obtained two-dimensional and three-dimensional feature point pair set to obtain a final pose result. According to the invention, stable positioning precision is maintained under complex illumination and real imaging conditions.