2958results about How to "Improve reaction efficiency" patented technology

The invention provides an inventory management method for e-commerce, which integrates links of multi-source data analysis and prediction, intelligent replenishment, dynamic inventory tracking and return management, constructs a demand prediction model by using historical sales records, user behaviors and market dynamic information, sets a safe inventory level based on a prediction result, and provides an inventory management method for e-commerce. An automatic purchase request and a quick response replenishment mechanism are implemented, real-time inventory synchronization is achieved through an API, inventory changes are monitored through the Internet of Things technology, a commodity processing decision is guided for a returned commodity development prediction model, unsalable commodities are regularly examined, products close to the expiration date are reasonably handled, and a KPI is set and comprises the inventory turnover rate and the order accuracy rate. And closed-loop control of inventory management is realized.

The invention relates to the technical field of sewage discharge treatment, and discloses a sewage low-carbon treatment system based on electrochemistry and biochar, which comprises a deep treatment filter tank, an electrochemical nitrogen and phosphorus removal device, a biochar adsorption and filtration module, an intelligent control and operation and maintenance system, a slow-release agent regulation and control module and a low-carbon and resource recycling system, the advanced treatment filter tank is used for filtering sewage impurities and particles, adsorbing and removing organic matters, reducing the content of nitrogen and phosphorus nutrient substances and adapting to the change of water quality and water quantity; the electrochemical nitrogen and phosphorus removal device is used for carrying out electrochemical reaction to remove nitrate, phosphate and fluorine ions. According to the invention, the electrochemical active reaction is combined with charcoal adsorption filtration, so that the technology greatly improves the sewage treatment efficiency, especially shows a higher removal rate when treating complex pollutants, can meet higher water quality standard requirements, and effectively overcomes the difficulty that the traditional treatment technology is difficult to remove multi-element pollutants.

The invention discloses a semiconductor catalyst intelligent design and reaction mechanism optimization method based on graph grammar, which comprises the following steps: step 1, a graph grammar model generation and optimization module: automatically generating a molecular structure model of a semiconductor catalyst, and screening out a structure combination with optimal catalytic performance; 2, a reaction path automatic derivation module which simulates the interaction between molecules and generates a reaction path diagram; 3, an intelligent catalyst design module: analyzing the relationship between the structure and the performance of the semiconductor catalyst, and dynamically adjusting the molecular structure of the catalyst; 4, a reaction mechanism visualization and interpretation module which provides graphical display of reaction paths and structure changes and supports interaction analysis of multi-dimensional data; 5, a real-time monitoring and feedback optimization module is used for monitoring key parameters in the catalytic reaction process in real time and dynamically adjusting a graph grammar model and a design scheme.

The invention discloses a crystalline polyaryletherketone surface grafted carbon fiber and a preparation method thereof, and belongs to the technical field of carbon materials.The preparation method comprises the following steps that an amino end-capping reagent containing sulfuryl, a difluoro monomer, a bisphenol monomer and potassium carbonate are placed in sulfolane to be subjected to a polymerization reaction, and amino-terminated polyarylether is obtained; carrying out diazonium salt reaction on the amino-terminated polyarylether and nitrite tetrafluoroborate to obtain diazonium salt-terminated polyarylether; connecting the carbon fiber with a cathode, immersing the carbon fiber in an electrolyte containing diazonium salt terminated polyarylether, and applying a reduction potential for reaction to obtain polyarylether grafted carbon fiber; and carrying out hydrolysis reaction on the carbon fiber grafted with polyarylether in an acid environment to obtain the crystalline polyaryletherketone surface grafted carbon fiber. According to the crystalline polyaryletherketone surface grafting modified carbon fiber prepared by the invention, the carbon fiber is directly connected with a polymer through high-temperature-resistant and corrosion-resistant phenyl and sulfuryl, so that the crystalline polyaryletherketone surface grafting modified carbon fiber has better high-temperature resistance and corrosion resistance.

The invention relates to the technical field of sludge resource utilization, in particular to a method for recycling phosphorus in sludge gasification slag. According to the method disclosed by the invention, the sludge gasification slag is subjected to acid leaching treatment, and the sludge gasification slag is subjected to acid leaching by adopting a dilute sulfuric acid solution in the process, so that the dissolution of other impurities can be effectively avoided while the phosphorus element is extracted, the extraction efficiency is high, and the purity of the obtained product struvite can be effectively ensured. The method disclosed by the invention is simple in process and low in equipment requirement, can realize extraction of phosphorus in the sludge gasification slag at lower cost, and has very high economic benefits; meanwhile, the obtained struvite is high in purity and can be used as a raw material for producing a phosphate fertilizer or a slow-release fertilizer, solid waste resource utilization and environment-friendly economic benefits are improved, and the struvite has positive significance on sludge reduction, harmlessness, stabilization and recycling.

The invention discloses industrial-grade mixed oil produced by utilizing kitchen waste oil and a preparation method of the industrial-grade mixed oil, and belongs to the technical field of recycling of the kitchen waste oil. The invention relates to industrial-grade mixed oil produced by using kitchen waste oil and a preparation method thereof, and the preparation method comprises the following steps: firstly collecting kitchen waste containing the waste oil, and storing the kitchen waste in a container through special equipment; carrying out screen solid-liquid separation, cleaning grease on the surface of the solid waste, and then carrying out precipitation separation; then carrying out centrifugal separation, chemical cleaning, water washing, acid treatment, dehydration, degumming and metal ion removal on the separated grease and oil-containing liquid; carrying out ultrasonic-assisted multistage ester exchange after enzymolysis optimization, carrying out membrane separation on glycerol and fatty acid methyl ester, and carrying out reduced pressure distillation to obtain a high-purity fraction; carrying out adsorption refining, plasma treatment and supercritical fluid extraction; finally, nano particles are added and blended with additives, efficient recycling of the kitchen waste oil is achieved, and then high-purity industrial-grade mixed oil is prepared.

The invention discloses a seed layer induced FeCoNiCuMo high-entropy alloy nanocage electrocatalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing and reacting iron, cobalt and nickel precursors to prepare a FeCoNi nanocage catalyst as a seed layer; adding copper salt and molybdate into the seed layer solution, carrying out ultrasonic mixing, adding a pH regulator and a reducing agent, carrying out ultrasonic treatment, putting the mixed solution into liquid nitrogen, cooling, carrying out primary nucleation, naturally unfreezing, standing for nucleation, cleaning, and freeze-drying to obtain the high-entropy alloy nanocage electrocatalyst. The catalyst is used for preparing urea through CO2 and NO3 <-> electro-catalysis, can effectively adjust the matching of CO2 and NO3 <-> reaction kinetics, and has extremely high Faraday efficiency and yield for synthesizing urea through C-N coupling.

The utility model provides a vertical reactor for green ammonia production, which comprises a shell, an internal part is arranged in the shell and divides the shell into a first cavity and a second cavity, an annular space is formed between the outer wall of the internal part and the inner wall of the shell, and a third cavity, a fourth cavity and an electric heater are arranged in the internal part. The device further comprises a lower heat exchanger, an upper catalyst frame assembly, a catalyst reaction cavity and a fifth cavity, a dead gas heat insulation cavity is further formed between the catalyst reaction cavity and the electric heater, and gas inlets are formed in the shell and comprise an annular gap gas inlet, a main gas inlet and a temperature adjusting gas inlet. The shell is cooled through basically constant external cold gas, large temperature fluctuation is prevented, operation under the fatigue working condition is avoided, the service life of the shell is prolonged, the heat dissipation performance of the shell is improved, the service life of the shell is prolonged, and the service life of the shell is prolonged. And the temperature of the catalyst reaction can be adjusted through external cold gas, so that the reaction efficiency of the catalytic reaction is improved.

The invention is applicable to the technical field of porous materials, and relates to multistage ordered macroporous-mesoporous titanium dioxide and a preparation method and application thereof, and the preparation method comprises the following steps: (1) preparing a superstructure photonic crystal solid; (2) forming a light yellow solution with the concentration of 0.2-0.5 mol / L; and (3) adding the superstructure photonic crystal solid in the step (1) into the light yellow solution in the step (2) to prepare the multistage ordered macroporous-mesoporous titanium dioxide. The preparation method has the beneficial effects that in the preparation method of the multistage ordered macroporous-mesoporous titanium dioxide disclosed by the invention, the stability of a mesoporous superstructure unit can be ensured, and accurate and perfect copying of a pore channel structure can be realized; the separation efficiency of photo-generated charges and photo-generated holes of the titanium dioxide disclosed by the invention in photocatalytic water decomposition is greatly improved, and due to the multi-stage ordered macroporous-mesoporous structure, multiple scattering of incident light in a porous frame can be ensured, so that the efficiency of hydrogen production by photocatalytic water decomposition is improved.

The invention relates to the technical field of immersed injection spray guns, and discloses a multi-channel rotational flow spray gun optimization method and system based on graph convolution, and the method comprises the steps: combining computational fluid dynamics and a graph convolution neural network technology, and rapidly predicting a velocity field and a pressure field of a spray gun through rotational flow spray gun grid coordinates and rotational flow blade boundary information; the design period is obviously shortened, the test cost is reduced, and the research and development efficiency is improved; the graph convolutional neural network model subjected to repeated training and verification has high generalization ability and high accuracy, and it is guaranteed that the spray gun can still provide reliable prediction results under different working conditions and variable industrial conditions. The system comprises a data acquisition and preprocessing module, a graph convolutional neural network model module and a rotational flow spray gun structure optimization module. The flow characteristics and local physical characteristics of the spray gun are further analyzed, efficient and stable performance can be kept in actual working conditions, the service life is prolonged, and the metallurgical reaction efficiency is improved.

The invention discloses injectable hydrogel for eye drug sustained release and a preparation method and application thereof.The method comprises the steps that a NaIO4 solution is dropwise added into a hyaluronic acid solution, after the reaction is conducted in a dark place at the room temperature, ethylene glycol is added for continuous reaction, and formylated hyaluronic acid is prepared; the preparation method comprises the following steps: adding adipic dihydrazide into a carboxymethyl cellulose solution, uniformly stirring at room temperature, adding 1-hydroxybenzotriazole and 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, and stirring to react, so as to prepare aminated carboxymethyl cellulose; and mixing the PBS solution of aminated carboxymethyl cellulose with the PBS solution of formylated hyaluronic acid, uniformly stirring, adding a to-be-carried drug and a FeCl3 solution, and carrying out a reaction to prepare the injectable hydrogel for sustained release of the eye drug. The hydrogel is convenient to use and high in gelation rate, effectively realizes controllable release of drugs, and has a wide application prospect in the field of biological medicines.

The invention relates to the technical field of defoaming stirring, and discloses a defoaming stirring barrel for flotation and a using method thereof.The defoaming stirring barrel comprises a round barrel, a mounting frame is fixedly mounted at the top of the round barrel, a driving motor is fixedly mounted at the top of the mounting frame, a rotating shaft is rotatably mounted on the mounting frame, and the rotating shaft penetrates through the mounting frame; the bottom end of the rotating shaft is rotatably connected with the inner wall of the bottom of the barrel, an output shaft of the driving motor is fixedly connected with the rotating shaft, the defoaming device further comprises a defoaming mechanism, the defoaming mechanism comprises a rectangular groove formed in the rotating shaft, and the rectangular groove is slidably sleeved with a circular sliding plate. In the rotating process of ascending and descending of the defoaming teeth, bubbles on the slurry surface and bubbles in vortexes including slurry can be effectively eliminated, the foam eliminating effect is improved, and the situation that due to the fact that the bubbles are concentrated at the vortexes and on the liquid surface, the bubbles overflow too much and concentrate is discharged out of a barrel, waste is caused, and the concentrate sinks again is avoided.

The invention discloses a method for preparing synthetic quartz sand by a sol-gel method, which comprises the following steps: mixing silicon alkoxide and an alcohol solvent, and stirring to form a homogeneous solution marked as L1; mixing an acidic catalyst, an alcohol solvent and ultrapure water to form a mixed solution, and recording the mixed solution as L2; dropwise adding the L1 solution into the L2 solution, and continuously stirring and hydrolyzing to obtain sol; dropwise adding ammonia water into the sol until the pH value is 5-10, and standing in a vacuum drying oven to obtain wet gel; and drying and sintering the wet gel to obtain the high-purity synthetic quartz sand. The gelation time is accurately controlled through acid-base two-step catalysis, the production period is shortened, and the production efficiency is improved; meanwhile, the size and uniformity of silicon dioxide particles are controlled by controlling the dripping speed of a silicon source, so that the sintering temperature of the synthesized quartz sand is greatly reduced, and the solvent is recycled through distillation when wet gel is dried, so that the production cost is reduced, and the pollution to the environment is reduced.

The invention relates to a catalyst for synthesizing ortho-cresol as well as a preparation method and application of the catalyst. The molar ratio of Zn element to Al element in the metal spinel catalyst ZnAl2O4 is 1: (0.25-16), and the preparation method comprises the following steps: uniformly mixing aluminum nitrate nonahydrate and zinc nitrate hexahydrate in deionized water, stirring, adding a precipitator, and adjusting the pH value of the solution to form a precipitate dispersion liquid; and aging the precipitate dispersion liquid, carrying out suction filtration on the suspension liquid, washing, drying, and calcining to obtain the catalyst. Compared with the prior art, the catalyst disclosed by the invention is high in activity, simple to prepare, non-toxic, good in stability, long in service life, suitable for synthesizing o-cresol and 2, 6-xylenol through reaction of phenol and methanol, good in ortho-selectivity and few in by-products.

The invention relates to the technical field of electrolysis, in particular to a method for assisting electrolysis of a solid oxide electrolytic tank by ammonia gas, a symmetric electrode and a preparation method of the symmetric electrode. According to the method for assisting electrolysis of the solid oxide electrolytic tank with the ammonia gas, NH3 is introduced into the anode side of the solid oxide electrolytic tank for oxidation, CO2 and / or H2O is introduced into the cathode side of the solid oxide electrolytic tank, and the CO2 and / or H2O are / is electrolyzed. The symmetric electrode disclosed by the invention is applied to the solid oxide electrolytic tank, and a symmetric electrode catalyst is square fluorite type cerium oxide and high-entropy alloy which is separated out from doped cerium oxide in situ. The conventional dynamic slow oxygen evolution reaction on the SOEC anode is replaced by a favorable NH3 oxidation reaction, so that the oxygen partial pressure on the anode side can be reduced, the CO2 reduction reaction rate of the cathode is improved, and meanwhile, the power demand of CO2 electroreduction is greatly reduced.

The invention belongs to the technical field of composite electrode preparation, and discloses a La-based fluorine-doped high-entropy perovskite oxide material and a preparation method and application thereof, a nitrate hydrate solution is used as a raw material, and a nanoscale perovskite type high-entropy oxide is synthesized through a solution gel method. And then preparing the corresponding fluorine-doped high-entropy perovskite oxide electrode material through a simple and convenient fluorination method. And the obtained electrode material is high in quality, strong in stability and good in electrical transport performance. The fluorine-element-doped high-entropy perovskite oxide composite electrode is applied to an electrocatalytic water electrolysis oxygen evolution reaction system, and the water electrolysis oxygen evolution reaction can be effectively catalyzed and promoted. The invention shows that the fluorinated high-entropy oxide has good performance in the field of electrocatalysis, shows a good application prospect, provides a foundation for designing and improving an electrocatalyst with better catalytic performance, lays a foundation for mass production of subsequent catalysts, and has important significance. And moreover, the preparation process is simple, the preparation cost is low, the requirement on instruments is not high, and amplification experiments can be realized.

The invention discloses a method for increasing the phenol yield through catalytic pyrolysis of a decommissioned fan blade, and relates to the technical field of waste composite material resourceful treatment.The method comprises the steps that decommissioned fan blade fragment materials obtained after crushing and magnetic separation are subjected to multispectral imaging, multispectral data are obtained, and pretreatment is conducted; performing spectral feature extraction on the preprocessed multispectral data by using a convolutional neural network; identifying and separating the fragment materials based on spectral characteristics and automatic separation equipment; carrying out activation and carbonization treatment on the separated balsa wood fragments to prepare a carbon-based catalyst; carrying out catalytic pyrolysis on the separated fragment material by utilizing an automatic adjusting reactor and a carbon-based catalyst; collecting a product generated by catalytic pyrolysis, and carrying out qualitative and quantitative analysis on phenols to obtain a qualitative analysis result and a quantitative analysis result. According to the method, through a mode of combining multispectral imaging and the convolutional neural network, different types of composite materials are accurately identified and classified.

The utility model provides a chlorination device for producing 3, 4-dichlorobenzotrifluoride, which belongs to the field of chemical industry production and comprises a barrel body, a support is fixedly mounted at the bottom of the barrel body, and a stirring component is arranged in the barrel body; the grinding assembly comprises a grinding hopper, a conical grinding plate, a guide hopper, a fixing plate, a lifting plate and a reciprocating screw rod, the grinding hopper is fixedly arranged on the inner wall of the barrel body, the conical grinding plate is matched with the grinding hopper, the guide hopper is fixedly arranged at the top of the conical grinding plate, the fixing plate is fixedly arranged at the top of the guide hopper, and the lifting plate is arranged on the lifting plate. And the reciprocating screw rod is fixedly arranged at the inner top of the barrel body. According to the chlorination reaction device, the stirring assembly is arranged, a solution can be fully stirred and mixed, the chlorination reaction efficiency is guaranteed, the grinding assembly is further arranged, a large catalyst can be ground, and therefore the catalyst is pulverized, and the chlorination reaction efficiency is further improved.

The invention discloses a leaching reaction kettle. The leaching reaction kettle comprises a reaction tank, a stirring assembly, a guide cylinder and an aeration pipe. The stirring assembly comprises a stirring part; the flow guide cylinder is arranged in the reaction tank, the flow guide cylinder divides the reaction tank into an inner side space and an outer side space, the flow guide cylinder is arranged around the stirring part and defines the inner side space, the stirring part is used for driving fluid in the inner side space to flow upwards, the flow guide cylinder is provided with an upper opening and a lower opening, and the upper opening is communicated with the lower opening. The inner side space and the outer side space are communicated through the upper opening and the lower opening; and the aeration pipe is used for introducing reaction gas into the lower part of the inner side space. The leaching reaction kettle can improve the leaching efficiency of materials and the utilization rate of reaction gas.

The invention relates to the technical field of TMBP preparation, in particular to a TMBP reaction device and a TMBP synthesis method. The reaction device comprises a closed tank body, a heating mechanism is arranged in the tank body, the tank body is divided into a gas phase area and a liquid phase area from top to bottom, a hollow rotating shaft is arranged in the center of the tank body, the top of the hollow rotating shaft is connected with a motor, a gas inlet mechanism is arranged in the hollow rotating shaft, gas inlet holes communicated with the gas phase area are formed in the upper portion of the side wall, and a gas distribution mechanism is arranged below the side wall. The gas distribution mechanism comprises a plurality of hollow and horizontally-arranged spiral blades which are communicated with the hollow rotating shaft in a sealed mode, the outer side wall is provided with a gas outlet pipe perpendicular to the normal of the outer side wall, and the gas outlet pipe is provided with a one-way nozzle. The device is compact in overall structure, small in occupied area and good in stirring effect, oxygen in a gas phase region can be dispersed into a liquid phase region, the gas distribution mechanism has gas distribution and stirring effects at the same time, the oxygen content and dispersion uniformity in a liquid phase are greatly improved, the reaction efficiency is improved, and the reaction time is shortened.

The invention discloses a method for preparing high-quality iron phosphate in a short process, and belongs to the field of battery material manufacturing. The method comprises the following steps: dissolving iron powder with phosphoric acid to prepare a ferrous phosphate solution, then transferring the solution into a pressurized reaction kettle, blowing high-speed oxygen to oxidize ferrous phosphate into ferric phosphate, adding ammonia water to control the pH value to be 1.5-2.0, and carrying out solid-liquid separation to obtain the water-containing amorphous ferric phosphate, after washing is finished, a water-containing material is fed into a muffle furnace to be subjected to stepped calcination, dehydration and crystal transformation are completed, and the alpha monoclinic system iron phosphate is obtained. The method provided by the invention is short in process flow and low in energy consumption, the oxidant is easy to obtain and safe, the particle size uniformity of reaction materials is good, and the prepared iron phosphate is uniform in particle size, regular in structure and stable in iron-phosphorus ratio and is a high-quality precursor material.

The invention belongs to the technical field of high-purity gas preparation and catalysis, and discloses a copper-iron double-component composite catalyst for removing trace acetylene and ethylene in petrochemical byproduct hydrogen chloride gas to prepare electronic grade hydrogen chloride gas, and a preparation method of the copper-iron double-component composite catalyst comprises the following steps: immersing activated carbon in hydrochloric acid; washing the activated carbon carrier with deionized water until the pH is neutral, and drying to obtain the pretreated activated carbon carrier; and impregnating the active component on the pretreated active carbon carrier, carrying out ultrasonic-assisted impregnation, standing, and drying, thereby obtaining the product, the active components are Fe metal salt and Cu metal salt. According to the method, trace acetylene and ethylene in the petrochemical byproduct hydrogen chloride gas are catalyzed to react with the hydrogen chloride gas at the same time, so that acetylene and ethylene are removed at the same time, and the acetylene and ethylene removal step in the existing hydrogen chloride purification process is simplified. Compared with a traditional method, the reaction efficiency of preparing the electronic-grade hydrogen chloride gas is remarkably improved.

The invention provides a fluidized bed control method, device and equipment and a storage medium, and the method comprises the steps: collecting a real-time temperature, a first pressure difference and a second pressure difference of a fluidized bed, the first pressure difference being a real-time pressure difference between an upper measurement point and a lower measurement point, which are different in preset height, of the fluidized bed, and the second pressure difference being a real-time pressure difference between the upper measurement point and the lower measurement point; the second pressure difference is a real-time pressure difference between the high-pressure stock bin and the fluidized bed; according to the first pressure difference and the second pressure difference, a cascade control method is used for determining control parameters of a pressure supplementing valve on the pressure adjusting pipe; the opening degree of the pressure supplementing valve on the pressure adjusting pipe is adjusted based on the control parameters of the pressure supplementing valve; according to the real-time temperature, determining a power parameter of the heater by using a cascade control method; and controlling the heating power of the heater based on the power parameter. And the fluidized bed pressure difference and the fluidized bed reaction temperature can be accurately controlled.

The invention discloses a continuous production process of a CO2-based multipolymer, and belongs to the technical field of polycarbonate synthesis. The technological process comprises the following steps: firstly, preparing an auxiliary agent, a solid-state monomer, a liquid-state reaction monomer and any solvent into a mixed solution in a premixer (1); continuously feeding carbon dioxide and the mixed solution into a multi-stage continuous reactor for mixing and heating to initiate a reaction, wherein the total reaction residence time of the materials in the multi-stage continuous reactor is controlled to be 10 minutes to 5 hours; and after the reaction is completed, carrying out post-treatment to complete the continuous production of the CO2-based multipolymer. The process particularly optimizes the effective continuous polymerization of high-molecular and high-viscosity materials of the CO2-based multipolymer. Through accurate control of the multi-stage tubular reactor, appropriate reaction viscosity is realized, further reaction uniformity of materials in the screw extrusion reactor is ensured, and reaction efficiency is improved.

The invention belongs to the technical field of water-absorbing material preparation, and provides a crop straw-based degradable water-absorbing resin as well as a preparation method and application thereof. The method comprises the following steps: pretreating crop straws by using an alkaline solution to obtain straw cellulose; the preparation method comprises the following steps: mixing straw cellulose, a first ethanol solution and a first alkali liquor for a first reaction, then adding a second ethanol solution and chloroacetic acid for a second reaction, and then adding a second alkali liquor for a third reaction to obtain straw cellulose sodium carboxymethyl; and mixing the straw cellulose sodium carboxymethyl, acrylic acid, an initiator, a cross-linking agent and water, and reacting to obtain the crop straw-based degradable water-absorbent resin. According to the method disclosed by the invention, a reaction inert structure in the straw cellulose can be removed, a crystalline region of the cellulose is destroyed, a homogeneous reaction preparation system is constructed, the grafting efficiency of the water-absorbent resin is improved, complete degradation of the water-absorbent resin is realized, and the production cost of the water-absorbent resin is also reduced.

The invention relates to the technical field of tunnel environment monitoring, in particular to a tunnel environment real-time monitoring and evaluation system which comprises an environment monitoring module, a video monitoring module, a data transmission module, a data processing module, a ventilation adjusting module, a traffic signal control module, an information board issuing module and a user interaction module. The environment monitoring module collects tunnel environment data in real time, the video monitoring module obtains tunnel video data, the data transmission module transmits the data to the data processing module, and the data processing module processes the received data and evaluates the environment safety condition in the tunnel. The ventilation adjusting module automatically adjusts a ventilation system in the tunnel according to an evaluation result, the traffic signal control module automatically controls traffic lights, the information board issuing module issues early warning information through an electronic information board, and the user interaction module provides a visual interface; according to the invention, comprehensive, real-time and intelligent monitoring and adjustment of the environment in the tunnel can be realized, and the safety management level and the operation efficiency of the tunnel are improved.

The invention discloses a synthesis method of EVOH, and relates to the technical field of EVOH synthesis. According to the technical scheme, the method comprises the following steps: S1, washing an adsorbent in washing liquor, soaking in a hydrochloric acid solution, oscillating, filtering, naturally cooling to normal temperature, and baking; s2, adding the mixture into an organic solvent, and then injecting ethylene; s3, mixing vinyl acetate and an initiator, mixing the mixture with an adsorbent for reaction, adding a terminator copper acetate to stop the reaction to obtain a mixed solution containing an ethylene-vinyl acetate copolymer, filtering the mixed solution to separate the adsorbent, and then performing desolvation, removal of redundant vinyl acetate and alcoholysis to obtain an EVOH crude product; and S4, carrying out water washing and vacuum drying on the EVOH crude product, extruding, pelletizing, and cleaning to obtain the EVOH. According to the invention, the adsorbent is adopted to adsorb ethylene, so that ethylene and vinyl acetate are fully and effectively contacted, the polymerization process is further controlled, the reaction pressure is reduced, the molecular weight distribution of the product EVOH is narrow, and the ethylene content is high.

The invention relates to the technical field of micro-channel reaction, and discloses a micro-channel polymerization reaction process which comprises the following steps: 1, mixing a monomer, an initiator, a solvent and other additives according to a required ratio, ensuring uniform distribution, uniformly mixing by using a static mixer or an oscillator, and preparing to enter a reactor; 2, feeding the mixed raw materials into a micro-channel reactor through an accurately controlled pump; by arranging the medium inlet, uniformly mixed raw materials are fed into the vertical channels, and a medium sequentially passes through the vertical channels and the connecting channels to complete polymerization reaction. The position of the sliding pipe is adjusted through the adjusting component, the volume of the vertical channel can be dynamically increased, the requirements of fluids with different viscosities are met, meanwhile, the angle of the connecting channel is changed, the fluid path is shortened, the flowability is improved, and the retention time is optimized.

The invention relates to the field of chemical engineering, in particular to an n-hexane separation technology, and more particularly relates to a method and a device for preparing electronic-grade n-hexane. The method for preparing the electron n-hexane comprises the following steps: S1, introducing an adsorbent into an n-hexane raw material to remove moisture in the n-hexane, and then carrying out catalytic hydrogenation reaction to obtain crude n-hexane; and S2, carrying out primary filtration on the material subjected to catalytic hydrogenation, then carrying out light component removal and heavy component removal two-stage rectification to obtain high-purity n-hexane, and carrying out secondary filtration on the high-purity n-hexane to obtain the electronic-grade n-hexane. The device for preparing the electronic-grade n-hexane comprises a raw material tank, an adsorption tower, a catalytic hydrogenation reactor, an intermediate tank, a light component removal tower, a heavy component removal tower and a product tank which are connected in sequence. According to the preparation method and device, high-purity electronic-grade n-hexane meeting the strict requirements of the semiconductor industry can be produced, the process steps are simple, industrial production is easy to achieve, the product quality is stable and reliable, and high economic and social benefits are achieved.

The utility model discloses a novel fatty acid hydrolysis kettle which comprises a reaction tank, a feed valve is arranged in the middle of the upper side of the reaction tank, a pressure regulating mechanism is arranged on one side of the upper part of the reaction tank, a discharge valve is arranged in the middle of the lower side of the reaction tank, and a stirring mechanism is arranged on the inner bottom wall of the discharge valve; the periphery of the support is fixedly connected to the upper side of the interior of the sleeve, the middle of the sealing plate is arranged on the upper middle portion of the adjusting assembly, the sealing plate is arranged on the upper portion of the sleeve, and the middle of the chassis is arranged on the lower portion of the adjusting assembly. According to the novel fatty acid hydrolysis kettle disclosed by the utility model, high-pressure steam enters the connecting pipe through the air inlet pipe and is discharged from the exhaust hole through the hollow stirring blade to heat and pressurize materials in the reaction tank, and meanwhile, the high-pressure steam washes the impeller, so that the connecting pipe drives the hollow stirring blade to rotate; furthermore, the materials in the reaction tank are stirred, so that the water vapor and the materials are fully mixed, and the reaction efficiency is improved.