98results about How to "Low boiling point" patented technology

The invention discloses an electrocatalyst material for in-situ production of hydrogen peroxide through oxygen reduction as well as a preparation method and application of the electrocatalyst material, and belongs to the field of organic wastewater treatment. MoS2 / Fe porous conductive particles and a high-molecular polymer are adopted as main components, and ethanedioate and polyacrylamide are combined as a dispersion auxiliary solvent and a pore-forming agent to form a three-dimensional composite conductive catalyst material; through ultralow-temperature freeze drying and microwave radiation technologies, the material structure is optimized, the catalytic reaction active sites are improved, and efficient electrocatalytic oxygen reduction for in-situ production of hydrogen peroxide is realized; the MoS2 / Fe porous conductive particles not only optimize the performance of the catalyst, but also realize high-valued utilization of solid wastes; the electrocatalyst material has excellent conductivity, catalytic activity and organic wastewater degradation capability, is stable in removal effect before and after use, can be repeatedly used for multiple times, reduces the use cost, and provides a wide application prospect for the fields of environmental protection, energy and the like.

The invention discloses a preparation method and an application of an S and N co-doped small-nano-size high-entropy intermetallic compound. 2, 2 '-bithiophene is simultaneously used as a metal ligand and a sulfur source to be applied to synthesis of the high-entropy intermetallic compound, and sulfur atoms in the substance can form a complex with metal ions, so that a metal precursor can be uniformly and firmly distributed on the surface of a commercial carbon carrier, and formation of the high-entropy intermetallic compound in the subsequent annealing process is facilitated; the S and N co-doped high-entropy alloy intermetallic compound catalyst synthesized by the invention has excellent electrochemical performance in a fuel cell, and particularly has remarkable performance in the aspect of stability; wherein the mass activity of the S and N co-doped high-entropy alloy intermetallic compound PtCuNiCoFe / C-SN (PCNCF-SN) catalyst under the condition of 0.9 V (vs.RHE) reaches 2.7 A * mg <-1 > Pt, which is more than 12.3 times of that of commercial Pt / C; and in the aspect of stability, the mass activity can still be kept at 65% or above after 100000 circles of accelerated durability.

The invention discloses a synthesis and purification method of electronic-grade diborane, and relates to the technical field of diborane synthesis, and the synthesis and purification method has the advantages that cation 1-ethyl-3-methylimidazole in ionic liquid has a relatively large volume and a specific spatial configuration; the ionic liquid can be close to reactants sodium borohydride and hydrogen through intermolecular force, meanwhile, the anion bis (trifluoromethanesulfonyl) imide salt has high polarity and can attract reactant molecules with opposite charges, so that the ionic liquid makes full contact with the reactants, sulfolane has high dissolving capacity and can well dissolve sodium borohydride and hydrogen, and the ionic liquid can be separated from the reactants. Sodium borohydride and hydrogen are uniformly distributed in a mixed solvent, the sodium borohydride and hydrogen are efficiently reacted at proper temperature and pressure to generate high-purity diborane under the synergistic effect of the sodium borohydride and the hydrogen, sufficient contact of reactants is ensured by timely stirring in the reaction process, the reaction efficiency and the diborane yield are greatly improved, and the yield of the diborane is increased. And favorable conditions are created for subsequent preparation of electronic-grade diborane.

The invention belongs to the technical field of azeotropic distillation and dehydration of isopropanol, particularly relates to an azeotropic distillation and dehydration method of industrial-grade isopropanol, and aims to solve the problems that the energy consumption of separation of isopropanol and solvents is high, the energy consumption is low and the like due to the fact that solvents such as benzene and cyclohexane are adopted for azeotropic distillation and dehydration in the conventional isopropanol dehydration process, but the boiling points of benzene and cyclohexane are close to those of isopropanol. In order to solve the problems that when diethyl ether is used as an azeotropic agent, the solvent is easily enriched at the tower top to form potential safety hazards, and when the solvents are used for azeotropic distillation, the requirements of electronic chemicals cannot be met, the following scheme is provided: the method comprises the following steps: S1, adding an industrial-grade isopropanol raw material into an azeotropic distillation tower; the azeotropic dehydrating agent disclosed by the invention is small in boiling point, high in ignition point, non-corrosive, low in price, good in safety and low in separation energy consumption, and has excellent application value and application prospect in industrial production and experiments, the used device is simple and easy to operate, the yield is high, and automatic production can be realized.

The utility model discloses rotary evaporation and concentration equipment for liquid fertilizer. The rotary evaporation and concentration equipment comprises a shell, a differential stirring mechanism and a vacuum pump mechanism, the shell comprises a cushioning outer shell, a motor arranged at the bottom of the inner wall of the cushioning outer shell and a rotating barrel arranged over the motor. An upper cover is arranged above the cushioning shell; the motor is fixedly connected with the cushioning shell; the differential stirring mechanism comprises a planetary gear set arranged at the bottom of the inner wall of the rotating barrel and a rotating sleeve arranged on the planetary gear set; a plurality of brackets are arranged on the rotating sleeve, and rotating fan blades are arranged on the brackets; the vacuum pump mechanism comprises an air guide pipe arranged on the upper cover and a vacuum pump arranged at the other end of the air guide pipe; a heating unit is arranged in the cushioning shell and fixedly connected with the cushioning shell. By adopting the unique differential rotation design, the stirring and concentrating efficiency is improved, and the uniformity and stability of liquid in the concentrating process are ensured.

The invention discloses a method for recovering dimethyl ether from dimethyl ether purge gas, and belongs to the technical field of dimethyl ether recovery, the method for recovering dimethyl ether from dimethyl ether purge gas comprises the following steps: cooling the dimethyl ether purge gas to 8-10 DEG C through heat exchange of a heat exchanger, and then discharging to obtain low-temperature purge gas, the low-temperature purge gas enters the bottom of the inner side of an absorption tower filled with composite filler and is absorbed by absorption liquid which flows from top to bottom and has the temperature of 10-15 DEG C, and enriched liquid is formed at the bottom of the absorption tower; according to the method, the composition and the adsorption temperature of the adsorption liquid are optimized, and the composite filler is modified, so that the recovery purity of the dimethyl ether is effectively improved, and the recovery rate of the dimethyl ether in the purge gas is also improved.

The utility model discloses a glass curtain wall with a fireproof structure, which relates to the technical field of glass curtain walls and comprises four groups of curtain wall mounting frames, a connecting block is arranged between every two groups of curtain wall mounting frames, and connectors are arranged between two ends of each curtain wall mounting frame and the inside of the corresponding connecting block. A fixing rod is arranged between the connecting block and the connector, two sets of sealing rings are arranged between the outer wall of the fixing rod and the connecting block, mounting bases are arranged on the inner side wall of the curtain wall mounting frame, double-layer vacuum glass is arranged among the four sets of mounting bases, and mounting grooves are formed between the double-layer vacuum glass and the mounting bases. A water storage box is arranged in the connecting block, and a water storage pipe is arranged in the middle of the curtain wall mounting frame. According to the glass curtain wall with the fireproof structure, the temperature in the curtain wall mounting frame can be reduced, the mounting frame is prevented from deforming in a fire disaster, and the curtain wall structure is better protected.

The utility model relates to the technical field of chlorophyll extraction, in particular to a multistage concentration and separation device in a chlorophyll extraction process, which comprises an extraction and separation tank, a first heating shell is welded on the surface of the extraction and separation tank, and a crushing component is arranged at the top of the extraction and separation tank. And the two sides of the rear side of the first heating shell are connected with an ethanol tank and a water storage tank through bolts correspondingly. According to the utility model, crushed chips are added into the extraction and separation tank, then high-concentration ethanol is added into the extraction and separation tank, water in the hot water tank is heated through the heater, the second electromagnetic valve and the first electromagnetic valve are controlled to be opened, and then the water in the hot water tank is pumped out through the third water pump and is injected into the first heating shell; water bath heating is conducted on the interior of the extraction and separation tank through hot water in the first heating shell, a first electromagnetic valve and a second electromagnetic valve are closed, a third electromagnetic valve and a fourth electromagnetic valve are opened, and hot water in the hot water tank is pumped into the second heating shell through a third water pump.

The utility model relates to a stage lamp self-adaptive detection system which is characterized in that a sealing cavity provided with a heating source is arranged in a stage lamp, the detection system comprises a control unit, an air pressure detection unit, a humidity detection unit and a pumping and draining unit which are arranged in the sealing cavity, and an exhaust hole capable of being communicated with the outside is formed in the sealing cavity. A gas outlet of the pumping and discharging unit is connected with the gas exhaust hole through a gas path, and the pumping and discharging unit can discharge part of gas in the sealing cavity out of the sealing cavity after sequentially passing through the gas exhaust hole, the gas outlet and the gas exhaust hole, so that the sealing cavity forms a negative pressure cavity; the detection system further comprises a drying device, vaporized water and grease can be absorbed by the drying device, so that the sealing cavity is kept in a dry environment, normal operation and the service life of equipment are guaranteed, and meanwhile the risk that moisture and oil gas are attached to the optical glass is avoided.

The invention relates to the technical field of food processing, in particular to a preparation method of stewed beef in normal juice, which comprises the following steps: slow melting, rolling and massaging, blanching, stewing, sesame freezing, slicing, seasoning soup preparation, bagging, slow cooking at constant temperature and high pressure, cooling, quick freezing, metal detection and warehousing. The quality and taste of the beef are greatly improved, and the beef is ensured to have meat fragrance, is natural and has no fishy smell; the raw materials and the auxiliary materials are quantitatively mixed, sealed, bagged and boiled at constant temperature, fixed time and high pressure, parameters in the whole process are controllable, standardized operation is achieved, and the stability of product quality is guaranteed; the original taste and original color of food are reserved to the maximum extent, nutritional ingredients of the food are reserved, water loss caused by inconsistent fire is reduced, loss of nutritional ingredients of beef in the cooking process is reduced to the maximum extent, the yield is increased, it is guaranteed that cooking results of each time are the same, and the taste of the beef is greatly improved. The quality stability is ensured, the product processing standardization is also realized, and the industrial large-scale production can be realized.

The invention discloses a treatment method of organic silicon slurry, and belongs to the field of material chemical industry. The method comprises the following steps: S1, filtering organic silicon slurry to obtain a filter cake I and a high-boiling residue; s2, mixing and stirring the filter cake I obtained in the step S1 with a washing solution, and filtering to obtain a filter cake II and a filtrate I; s3, mixing and stirring the filter cake II obtained in the step S2 with a washing solution, and filtering to obtain a filter cake III and a filtrate II; and S4, hydrolyzing the filter cake III obtained in the step S3 to obtain silicon slag and an oil-phase substance. According to the method provided by the invention, the high-boiling-point substance in the silicon slurry is effectively recovered, the particle size of the hydrolyzed silicon slag is less than 50 meshes, and the hydrolyzed oil-phase substance can be used for preparing the high-boiling-point silicone oil.

The utility model relates to the technical field of footwear production, in particular to a baking device for footwear production, which comprises a device shell, a driving motor and a support plate, an electric heating plate is arranged in the device shell, the driving motor is arranged at the upper end of the device shell, a rotating shaft is arranged in the device shell, and the support plate is arranged on the side surface of the rotating shaft. A side baffle is arranged at the upper end of the supporting plate, a fixed baffle is installed at one end of the supporting plate, a rotating stud is arranged in the other end of the supporting plate, an installation block is arranged on the outer side of the rotating stud in a threaded meshing mode, and a movable baffle is fixed at the upper end of the installation block. The positions of the fixed baffles and the movable baffles can be adjusted according to the sizes and shapes of shoes to adapt to different types of shoes, the influence of the baffles and the supporting plates on the baking effect can be reduced, and the baking efficiency is improved.

The invention provides a preparation method of high-purity diester oil, and relates to the technical field of genetic engineering of enzymes. The preparation method of the high-purity diester oil comprises the steps that raw materials are selected and prepared, high-purity fatty acid and alcohol are selected as reaction raw materials, the fatty acid is generally derived from hydrolysis of vegetable oil or animal fat, the alcohol can be methyl alcohol or ethyl alcohol, it is ensured that the purity of the fatty acid and the purity of the alcohol are both higher than 99%, and the influence of impurities on the purity of a final product is reduced; the raw materials are pretreated, wherein dehydration and possible impurity removal are included; esterification reaction: under the anhydrous condition, fatty acid and alcohol are mixed according to a certain molar ratio, the esterification reaction is carried out in the presence of a catalyst, and the catalyst is preferably strongly acidic ion exchange resin. Through the steps of accurately controlling raw material selection, esterification reaction conditions, reduced pressure distillation, molecular sieve adsorption treatment and rectification, the purity of the diester oil can be effectively improved, and the strict requirement of specific application on the purity is met.

The invention discloses a high-impact high-toughness bio-based nylon composite material and a preparation method thereof. The raw materials for preparing the nylon composite material comprise the following components in parts by weight: 100 parts of bio-based nylon, 0-30 parts of a toughening elastomer, 0.1-30 parts of an elastomer grafting compatilizer and 0.2-0.6 part of an antioxidant, wherein the elastomer grafting compatilizer is obtained by grafting and modifying an elastomer by itaconic anhydride and a third monomer; the third monomer comprises any one or a combination of more of butyl acrylate, alpha-methyl styrene and maleic anhydride. The elastomer grafted compatibilizer provided by the invention has the advantages of high grafting rate, low odor, efficient compatibility effect and efficient toughening, and meanwhile, the bio-based nylon material toughened by the elastomer and the elastomer grafted compatibilizer has the advantages of high impact resistance and high toughness, so that the defect of insufficient toughness of the nylon material is greatly overcome, and the service life of the nylon material is prolonged. The application range of the bio-based nylon material is expanded.

The invention discloses a high-water-content lignite moisture accurate regulation and control method and device, and relates to the technical field of lignite treatment device.The high-water-content lignite moisture accurate regulation and control device comprises a rack and further comprises a crushing mechanism connected to the rack, and the input end of the crushing mechanism communicates with a feeding port; the input end of the vacuum dehydration system is communicated with the output end of the crushing mechanism; the input end of the feeding mechanism is communicated with the output end of the vacuum dehydration system; and the input end of the upgrading mechanism communicates with the output end of the feeding mechanism. High-water-content lignite is crushed through the crushing mechanism, water and pulverized coal are separated and collected through the vacuum dehydration system, and ash which affects heat production and pollutes the environment in the pulverized coal is removed through the quality improving mechanism, so that the combustion quality of the lignite powder is improved, and emission of pollutants is reduced; and conveying of the pulverized coal and adding of the corresponding water content are continuously performed through the scraper conveying belt, so that the influence of water and ash in the lignite with the high water content is reduced, and the water in the lignite is accurately regulated and controlled.

The invention discloses a carbon fiber production waste liquid recycling process, which comprises: (1) inputting a waste liquid containing acrylonitrile and dimethyl sulfoxide into an acrylonitrile recovery tower, controlling the pressure and the temperature, enabling acrylonitrile and a part of water to form a gas phase, and separating the gas phase from the tower top to obtain dimethyl sulfoxide and water at the tower bottom; (2) dimethyl sulfoxide and water at the bottom of the acrylonitrile recovery tower sequentially enter a first-stage dehydrating tower, a second-stage dehydrating tower and a third-stage dehydrating tower, water is discharged from the tops of the dehydrating towers, and dimethyl sulfoxide at the bottom of the tower is purified step by step until the concentration reaches 99.5% or above; and (3) the purified dimethyl sulfoxide enters a rectifying tower, the pressure and the temperature are controlled, dimethyl sulfoxide impurities exist at the tower bottom, dimethyl sulfoxide forms a gas phase, the gas phase is discharged through the tower top, and after condensation and recovery, a pure dimethyl sulfoxide product without impurities is obtained. The process is efficient, environment-friendly and energy-saving, and the recovery rate of acrylonitrile and dimethyl sulfoxide is high.

The utility model discloses a reaction water removal device for o-phenylenediamine production, which relates to the technical field of o-phenylenediamine production, and comprises a dehydration tank and a heating shell, the top end of the dehydration tank is hermetically connected with a cap, the top of the cap is communicated and connected with an air inlet pipe, an air outlet cylinder and a feeding cylinder with a valve, a valve body is further arranged on the air inlet pipe, a discharging barrel with a valve is connected to the bottom of the dewatering tank in a penetrating mode, a vacuum pump is connected to the end, away from the cover cap, of the air outlet barrel, and the dewatering tank is sleeved with the heating shell. The heating shell is started to heat o-phenylenediamine in the dehydration tank, the vacuum pump is started to pump out air in the dehydration tank, and the interior of the dehydration tank is in a negative pressure state, so that the boiling point of water in raw materials is reduced, all the valves are opened, outside air enters the dehydration tank, and meanwhile the air in the dehydration tank is pumped out; therefore, water vapor in the dehydration tank is brought out, and the use effect is good.

The present invention provides a method for evaluating the diffusion behavior of a regeneration agent when mixing and regenerating old asphalt based on non-equilibrium molecular dynamics simulation. Through stretching dynamics simulation, the dynamic process before the system reaches equilibrium during mixing and a period of time thereafter is more realistically simulated, and the non-equilibrium dynamic characteristics of the system are obtained. The gyration radius and diffusion coefficient of the regeneration agent calculated based on the obtained non-equilibrium dynamics trajectory can more objectively evaluate the diffusion behavior of the regeneration agent. The advantage of the present invention is that the mixing process is simulated more realistically by using non-equilibrium dynamics. In addition, after the mechanical mixing is completed, the mixed system is still in a non-equilibrium state, and the further diffusion of the regeneration agent is also described by NVT ensemble dynamics simulation. Therefore, these two steps of non-equilibrium dynamics simulation better achieve the reproduction of the fusion process of old asphalt and regeneration agent at the nanoscale on a macro scale, and can provide a more accurate and realistic characterization of the diffusion properties and behavior of the regeneration agent.

The utility model discloses a kind of camellia seed oil refining front water removal and impurity removal device, it is related to camellia seed oil processing technical field, including support column, support plate and impurity removal box, further include: feed pipe, circular filter plate, impurity collection mechanism is set on impurity removal box, water collection mechanism is set on support plate, stirring mechanism is set on impurity removal box, cleaning plate, pressure reduction mechanism is set on impurity removal box;Through the cooperation between impurity collection mechanism, stirring mechanism and cleaning plate, so that drive cleaning plate rotation while stirring, impurities on circular filter plate are swept by cleaning plate, and make the impurities swept down produce centrifugal force, so that impurities fall into impurity collection mechanism, play to prevent filter plate blockage, and facilitate cleaning;Through the cooperation between pressure reduction mechanism, water collection mechanism, stirring mechanism and conical electric heater, reduce the air pressure in box, thereby reduce the boiling point of water in box, accelerate water evaporation, improve separation efficiency.

The present invention relates to an insulating gas for electrical insulation or arc extinguishing of an electrical device and an electrical device for electrical insulation using the insulating gas. The insulating gas capable of replacing the SF6 gas in the invention is a mixed gas of trifluoromethyl trifluorovinyl ether (CF3OCFCF2) and a carrier gas. The insulating gas according to the present invention has the characteristics of low boiling point, high insulating strength, low toxicity, and low global warming index (GWP1 or less), thereby being able to replace SF6, and reducing the global warming index while maintaining high insulating ability and arc extinguishing ability, thereby reducing greenhouse gases.

The utility model provides a traditional chinese medicine citrus energy -conserving drying device, including including the cabinet, the cabinet door of hinged installation in the cabinet one side, set up in the plurality of storage board in the cavity of cabinet, microwave generating subassembly, dehumidification pipe, control panel and vacuum pump, a plurality of storage board interval installation in the cavity of cabinet along vertical direction in the cabinet, through having the vacuum pump on the cabinet, utilize the vacuum pump to the air in the cabinet and extract, make the cavity of cabinet is in low pressure environment, reduce liquid boiling point, set up simultaneously in the microwave generating subassembly in the cabinet, can carry out efficient heating to the citrus that stores in the cabinet, make the moisture that adheres on citrus rapidly vaporizes and evaporates under low temperature environment, avoided the temperature of citrus self excessively high, the synergies of vacuum and microwave, realize low temperature environment to the moisture on citrus and dry.

The invention relates to the technical field of cleaning machines, in particular to a monocrystalline silicon wafer ultrasonic cleaning machine with a multi-stage spray cleaning and vacuum infrared drying cleaning machine structure, which comprises a cleaning seat and a material supporting device mounted at the top end of the cleaning seat, an ultrasonic cleaning cavity, an ozone water spraying cavity, a hydrofluoric acid spraying cavity, an alkaline spraying cavity, an acid spraying cavity and a vacuum infrared drying cavity are sequentially formed in the top face of the cleaning base along the circumference, a center column is fixedly welded to the center of the top end of the cleaning base, and an intermittent rotating device is installed at the top end of the cleaning base around the center column. And the intermittent rotating device drives the materials in the material supporting device to move among the working cavities in sequence. According to the silicon wafer cleaning device, the ozone water spraying cavity, the diluted hydrofluoric acid spraying cavity, the alkaline spraying cavity and the acid spraying cavity are arranged to achieve multi-stage spraying cleaning of silicon wafers, the vacuum infrared drying cavity is arranged to rapidly dry the silicon wafers, and meanwhile a twisting block rotates to drive the bottom tray and the top cover tray where monocrystalline silicon wafers are placed to twist in the cleaning process; and the silicon wafer is cleaned more thoroughly.

The utility model relates to the technical field of centrifugal evaporation, and particularly discloses a low-temperature-based high-speed centrifugal evaporation device which comprises a shell, a motor is embedded in the surface of the shell, and a cavity is embedded in the surface of the shell; a containing cavity is formed in the cavity, an output shaft of the motor is connected with the bottom face of the containing cavity, a cover is rotationally installed on the surface of the shell, and a sealing cover is installed at the bottom of the cover. The shell is provided with a heating structure, and the heating structure is characterized in that a heating block is embedded in the shell, and a pipeline I is embedded in the surface of the cover. According to the low-temperature high-speed centrifugal evaporation device, the heating structure is arranged, the placing cavity is heated, then the reaction rate of a reagent is increased, the vacuum pump vacuumizes the interior of the placing cavity through the second pipeline, a negative pressure environment is formed in the placing cavity, the boiling point of the reagent is reduced, the evaporation process is further accelerated, the evaporation time is shortened, and the working efficiency is remarkably improved.

The invention relates to a method for reducing waste liquid generated in a platinum black catalyst preparation process, which comprises the following steps: dissolving chloroplatinic acid in a small amount of water, adding solid sodium hydroxide, stirring to form a solution, and adding the solution into an organic solvent. The volume ratio of the organic solvent to the aqueous solution is 15: 1, and the organic solvent comprises but is not limited to benzene, cyclohexane, ethanol, isopropanol, ethylene glycol, acetone, methyl butanone, acetonitrile and the like. And adding a formaldehyde solution (35% by mass) according to the chemical reaction stoichiometric ratio of chloroplatinic acid to formaldehyde of 1: 1.5. And finally, transferring the whole solution into a high-pressure kettle to react at 200 DEG C for 4 hours. And calculating the mass of the mother liquor, and detecting the granularity of the sample by using a scanning electron microscope. According to the method, under the condition that the catalyst with the same granularity and the same mass is prepared, the waste liquid discharge amount is only 1 / 35 of that of a used aqueous solution, and due to the fact that the used organic solvent is low in boiling point, the organic solvent can be recycled in a fractionation mode. The particle size of the prepared sample is about 5nm.

The invention discloses an evaporation crystallization device for recycling waste power lithium batteries, and relates to the technical field of evaporation crystallization equipment. The device comprises a preheating tank for heating a dissolving liquid for the first time; an evaporation crystallizer performs a second heating by steam heating and gradually evaporates the dissolving liquid; a steam condenser condenses the evaporated gas into a liquid state and stores it; a vacuum pump reduces the air pressure in the evaporation crystallizer and reduces the boiling point of the dissolving liquid; a waste heat heat exchange mechanism comprises a compressor, a steam-fluorine heat exchanger, a heat exchanger and a first evaporator, recovers the waste heat of the evaporation crystallizer and the steam condenser, and realizes heating of the preheating tank and cooling of the steam condenser; through the waste heat recovery and reuse of the waste heat of the waste heat heat exchange mechanism, the heating and cooling compensation of the preheating tank and the steam condenser are realized, so as to realize reduced energy consumption, improved energy efficiency and efficient recovery of valuable metals in waste lithium batteries; and the problem of low energy efficiency of the existing evaporation crystallization device for recycling lithium battery liquid due to insufficient or wasteful energy utilization is solved.

The invention belongs to the technical field of high-performance special materials, and discloses a one-step method for preparing silicon alkyne resin MDPES. The method comprises the following steps: mixing 2-halophenylacetylene, dichlorosilane and a solvent, adding magnesium, and heating for reaction; after the reaction is finished, adding acid liquor for neutralization, and then extracting and layering to obtain an organic layer; then concentrating the organic layer to obtain a concentrated solution, and finally carrying out molecular distillation on the concentrated solution to prepare the silicon alkyne resin MDPES. Wherein the 2-halogen phenylacetylene comprises one of 2-iodine phenylacetylene, 2-bromophenylacetylene and 2-chlorophenylacetylene; and the molecular formula of the dichlorosilane is R1R2SiCl2. According to the method provided by the invention, the 2-halophenylacetylene and the dichlorosilane are subjected to one-step reaction in the anhydrous solvent to prepare the product with high purity and high yield. The method uses few raw materials, the preparation steps are simple, and the production efficiency is high; and the prepared product has the advantages of high yield, high purity, safety, environmental protection and easiness in industrialization.

The utility model discloses a solid-liquid continuous separation device for preparing aquacide dichloride, which belongs to the technical field of solid-liquid separation and comprises a box body, a first filter screen is detachably connected in the box body and divides the box body into an upper cavity and a lower cavity, a pressure reducing pump is connected to the outer side of the lower cavity, and a second filter screen is connected to the outer side of the pressure reducing pump. The output end of the pressure reduction pump extends into the box body, a cold and heat conveying assembly is arranged in the lower cavity and used for heating and cooling reactant liquid in the lower cavity, a drainage channel is formed in the lower portion of the box body, a separation box is arranged below the box body, and a second filter screen is detachably connected into the separation box. According to the utility model, the cold and hot conveying component is matched with the pressure reducing pump to crystallize reactants, so that the solid-liquid filtering efficiency and effect are improved.

The present application relates to the technical field of soft candy production, in particular to a vacuum low-temperature boiling process and equipment for heat-sensitive functional soft candy, comprising a supporting assembly, a heating assembly and a sealing assembly, wherein the supporting assembly comprises a bottom plate, a side plate, a top plate, a lifter, a lifting plate and a supporting plate; the vacuum low-temperature boiling process and equipment for heat-sensitive functional soft candy is characterized in that the sealing assembly adopts a "vacuum generator + sealing ring" structure, the vacuum degree in the heating box is quickly extracted to -0.06~‑0.09MPa, the boiling point of the material is reduced, low-temperature boiling at 60‑75℃ is realized, and the inactivation of heat-sensitive components such as probiotics and vitamins caused by high temperature is avoided; the angle adjusting assembly adopts a servo motor to drive a worm gear transmission, which drives the heating box to freely roll around the hinged shaft; when loading, the heating box can be rolled to an inclined state, which facilitates the pouring of the material; when discharging, the heating box is inclined by 30‑45°, and uniform discharging is realized in cooperation with the flow guide plate, thereby solving the problem of inconvenient loading and unloading of the traditional equipment.

The invention relates to the technical field of silicon resin processing, in particular to vacuum drying and decolorizing equipment for silicon resin processing. The technical problems that when an existing drying and decolorizing device is used for drying and decolorizing, decolorizing is not sufficient, drying is not uniform and sufficient, and therefore the drying and decolorizing efficiency is low are solved. The vacuum drying and decoloring equipment for silicon resin processing comprises a base, an outer frame is fixedly connected to the base, and an air pump is fixedly connected to one side of the outer frame. A motor drives a stirring plate to stir silicon resin, the stirring plate drives a sliding rod to rotate while rotating, the sliding rod rotates along an annular groove of an isolating ring to enable a grinding plate to continuously grind the silicon resin, and the stirring plate reciprocates up and down to drive a piston so that a decolorizing agent can be intermittently pushed into an outer frame to be continuously mixed with the silicon resin; when the decolorizing agent is mixed with the silicon resin, pigment which cannot be removed in the silicon resin can be quickly precipitated, so that the silicon resin is more quickly and effectively decolorized, and the decolorizing efficiency of the silicon resin is improved.

The utility model discloses a vacuum cooling system for tea pigment production. The vacuum cooling system comprises a base; the rack is arranged on the base; the air inlet tank is arranged on the rack; the cooling tank is arranged on the rack, and the air inlet tank is communicated with the cooling tank; and the vacuum gas storage tank is communicated with the cooling tank. In the tea juice concentration process, the vacuum pump extracts high-temperature steam from the concentration evaporator to maintain the vacuum degree in the concentration evaporator and reduce the boiling point of tea juice in the concentration evaporator, so that the energy required by tea juice concentration is reduced. High-temperature steam pumped out of the concentration evaporator by the vacuum pump firstly enters the air inlet tank and then enters the cooling tank through the air inlet tank to be cooled, and after being fully cooled in the cooling tank, the high-temperature steam is discharged into the vacuum air storage tank and flows into the vacuum pump through the vacuum air storage tank. Through the steps, high-temperature steam can be effectively prevented from directly flowing into the vacuum pump, large temperature rise of the vacuum pump is avoided, the vacuum degree of the vacuum pump is improved, and the service life of the vacuum pump is prolonged.