43 results about "Batch reactor" patented technology

A geothermal system including a heat-driven process system using heat extracted from a magma wellbore for driving a thermal process. The system includes a magma wellbore connected to the heat-driven process system in a closed loop. A heated heat transfer fluid conveys the heat from the magma wellbore to a reactor housing a decomposition reaction. The reactor can be a batch reactor, a continuous reactor, or a through-flow reactor. The heat provides the reaction temperature necessary for driving the decomposition reaction of a polymer to an end product. The heat can be provided directly by the heated heat transfer fluid, by an intermediate heat transfer fluid heated by the heated heat transfer fluid, or by a reaction medium heated by the heated heat transfer fluid.

A system and method for chemically destroying, degrading and incinerating a fluorocarbon or fluorinated material, such as perfluoroalkyl and polyfluoroalkyl substances (PFAS), with reduced emissions of gaseous PFC is provided. The method includes mixing the fluorinated material with an aqueous alkoxide base in a batch reactor to form a suspension. The PFAS can be provided by AFFF. The reaction mixture is heated to a temperature ranging from about 25ºC to about 400ºC for about 0.5 hours to about 240 hours to defluorinated fluorocarbons in the PFAS and produce a defluorinated waste product. More specifically, the method converts organic fluorine present in the PFAS to inorganic fluoride. Thus, the defluorinated waste product can be incinerated with reduced emissions of harmful gaseous PFCs.

Systems and methods are provided for treating, degrading, and incinerating fluorocarbons or fluorinated materials, such as Freon ® with reduced gaseous perfluorinated compound (PFC) emissions. The methods include mixing a fluorinated material with a hydroxide base and optionally a solvent system (e.g., diglyme, polyether, polyether alcohol, polyethylene glycol selected from ethylene glycol and PEG 50 to PEG 3350, N-methyl pyrrolidine, dihydrolevogluton, and / or water ("solvent")) in a batch reactor to form a reaction mixture (also referred to as a suspension). The reaction mixture is heated to a temperature in the range of about 25 °C to about 400 °C for about 0.5 hours to about 240 hours to defluorinate the fluorinated material and produce a defluorinated waste product. More specifically, the methods convert organic fluorine present in the fluorinated material, such as Freon ® to inorganic fluorides. As a result, the defluorinated waste product can be incinerated with reduced harmful gaseous PFC emissions.

This invention discloses a photocontrolled polymerization device and production method for polyacrylonitrile based on continuous flow. The invention employs a two-stage combined photocontrolled polymerization process: a batch reactor for prepolymerization and a tubular continuous flow reactor. The low-viscosity stage in the early polymerization phase takes place in a batch reactor with an internal light source, while the high-viscosity stage in the later polymerization phase occurs in a tubular continuous flow photoreactor. The light source can effectively penetrate the glass coil reactor, achieving efficient and controllable photocontrolled polymerization. This effectively overcomes the problems of difficult mass transfer due to increased material viscosity in the later stages of batch reactor polymerization, such as slower reaction efficiency and uneven illumination. Furthermore, the continuous flow photoreactor is divided into multiple independently controllable stages, allowing for precise adjustment of the light power density according to the reaction progress, achieving higher conversion rates in a shorter time.

The invention discloses a metal phosphate catalyst as well as a preparation method and application thereof in Friedel-Crafts reaction. The catalyst is composed of transition metal ions and phosphate ions, the molar ratio of phosphorus to the transition metal elements is 1: (0.5-7), the total acid amount of the catalyst is in positive correlation with the catalytic activity, and the higher the total acid amount is, the better the reaction effect is. The preparation method comprises the following steps: dissolving a transition metal soluble salt in deionized water, adding a phosphate aqueous solution, stirring to generate a precipitate, dropwise adding nitric acid to dissolve the precipitate, adding urea to obtain a mixed solution, and carrying out hydrothermal reaction, washing, suction filtration and drying to obtain a finished product. During application, the catalyst, phenol and alcohol are put into an intermittent reaction kettle, nitrogen is introduced to maintain stable pressure, heating and stirring reaction are performed, and an alkylphenol product is directly obtained. The catalyst is excellent in catalytic performance, mild in reaction condition and convenient to operate, the alcohol conversion rate and the selectivity of target alkylphenol can be effectively increased, meanwhile, the high conversion rate of acyl chloride is achieved in the acylation process, the process economy is improved, and an efficient and feasible technical scheme is provided for the Friedel-Crafts reaction.

The invention discloses a methylhydrazine continuous flow synthesis process based on coupling of a microchannel reactor and a tubular reactor, and relates to the technical field of chemical engineering. The method comprises the following steps: by taking hydrazine hydrate, hydrochloric acid and methanol as raw materials, continuously introducing the raw materials into a micro-channel reactor through a metering pump to realize rapid mixing, preheating and preliminary methylation reaction so as to generate a reactant flow containing methylhydrazine hydrochloride; introducing the material flow into a series tubular reactor, carrying out constant-temperature and constant-pressure curing reaction, and prolonging the retention time so as to improve the conversion rate; and carrying out continuous dissociation and rectification separation to obtain a high-purity methylhydrazine product. The process overcomes potential safety hazards and efficiency limitation of traditional intermittent kettle reaction, enhances heat and mass transfer, improves reaction controllability and industrial applicability, and is suitable for continuous production of high-heat-release and high-risk methylation reaction.

The present invention relates to a preparation method of biobased adipic acid. In the method, by using a nickel-based hydrogenation catalyst provided by the present invention, when a substrate concentration is as high as 200 g / L, the reaction of biobased sodium muconate and hydrogen is catalyzed in a batch reactor and a micro packed bed to prepare sodium adipate, and the yield of a target product is close to 100 mol %. Wherein the biobased sodium muconate is biobased sodium muconate obtained by microbial fermentation. The method has the advantages of short reaction path, good economy, and easy large-scale preparation, and lays a solid foundation for the industrialization of green synthesis of the biobased adipic acid.

The method for producing a cathode active material precursor using a batch reactor according to the present invention includes: (S1) generating nuclei of the precursor; (S2) growing the nuclei generated in step S1; (S3) further growing the precursor particles grown in step S2; and (S4) further growing the precursor particles grown in step S3. The stirring speed in the batch reactor is 200 rpm to 900 rpm in step S2, 800 rpm or less in step S3, and 700 rpm or less in step S4. When the batch reactor is full, the reaction solution is allowed to overflow.

This invention discloses a method for side-stream extraction of refined tetracyclododecene, comprising: using dicyclopentadiene, ethylene, and norbornene as raw materials, and toluene as solvent, conducting a Diels-Alder reaction in a batch reactor to obtain crude tetracyclododecene product; removing ethylene, norbornene, and toluene from the crude product by atmospheric distillation, and then sending it to a vacuum distillation column; in the vacuum distillation column, dicyclopentadiene and tetracyclododecene products are obtained at the top of the column, high-purity tetracyclododecene product is obtained by side-stream extraction, and heavy components are removed from the bottom of the column.

A geothermal system including a heat-driven process system using heat extracted from a magma wellbore for driving a thermal process. The system includes a magma wellbore connected to the heat-driven process system in a closed loop. A heated heat transfer fluid conveys the heat from the magma wellbore to a reactor housing a decomposition reaction. The reactor can be a batch reactor, a continuous reactor, or a through-flow reactor. The heat provides the reaction temperature necessary for driving the decomposition reaction of a polymer to an end product. The heat can be provided directly by the heated heat transfer fluid, by an intermediate heat transfer fluid heated by the heated heat transfer fluid, or by a reaction medium heated by the heated heat transfer fluid.

The present invention provides a method for preparing an ester-based material, the method including a step in which in a batch reactor, under a catalyst, at least one polycarboxylic acid selected from the group consisting of a terephthalic acid, a phthalic acid, an isophthalic acid, a cyclohexane dicarboxylic acid, a cyclohexane tricarboxylic acid, a trimellitic acid, and citric acid reacts with at least one mono-alcohol having 3 to 12 alkyl carbon atoms, wherein pressure in the reactor is configured such that the pressure at the early stage is 0.3 barg to 1.0 barg and the pressure at the latter stage is 0 barg to 0.5 barg, the pressure at the early stage being greater than the pressure at the latter stage, and the early and latter stages are divided based on any one of the time points when reaction conversion rate is 30% to 90%.

The invention relates to the technical field of solar cells, in particular to a triple-junction gallium arsenide solar cell epitaxial wafer and a preparation method thereof.The triple-junction gallium arsenide solar cell epitaxial wafer sequentially comprises a Ge substrate, a bottom cell, a buffer layer, a middle bottom superlattice tunnel junction, a DBR, a middle cell, a middle top superlattice tunnel junction, a top cell and an ohmic contact layer from bottom to top, both the middle bottom superlattice tunnel junction and the middle top superlattice tunnel junction contain superlattice layers. Through structure optimization, tunnel junction structure optimization is carried out on the basis of a traditional solar cell P-N-N + structure, better current matching is achieved between cells, and the overall photoelectric conversion efficiency of a device can be comprehensively improved.

The present invention relates to a method for preparing a plate-like pseudo-boehmite using a Couette-Taylor vortex flow. According to one embodiment, a method for preparing a plate-like pseudo-boehmite can be provided, in which a plate-like pseudo-boehmite is obtained by including the following processes: a) adding an organic acid to an aqueous solution in which an aluminum precursor is dispersed; and b) adding the product of the process a) to a Taylor reactor, wherein the pressure of the Taylor reactor is 1 to 100 bar. According to one embodiment of the present invention, the Taylor reactor using a Couette-Taylor flow has a more excellent stirring capacity compared to a conventional batch reactor, and the production efficiency of a plate-like pseudo-boehmite can be improved by controlling the Taylor reactor to a specific condition of high temperature-high pressure.

The utility model discloses a kettle type reactor, which belongs to the technical field of chemical reaction equipment and comprises a kettle body provided with a feed port, a discharge port, a tube pass inlet and a tube pass outlet. The temperature control assembly is arranged in the kettle body; the temperature control assembly comprises two collecting pipelines and multiple layers of spiral pipes, the multiple layers of spiral pipes are located between the two collecting pipelines and communicate with the collecting pipelines, and the tube pass inlet and the tube pass outlet communicate with the collecting pipelines correspondingly; the bearing assembly is arranged between the inner wall of the kettle body and the collecting pipeline to support the temperature control assembly; the stirring assembly comprises a stirring shaft positioned in the kettle body, and the spiral pipe is arranged around the stirring shaft; the multi-layer spiral pipe can be stably positioned in the kettle body through the cooperation of the bearing assembly and the collecting pipeline, and a traditional core cylinder fixing structure is replaced; the multi-layer spiral pipe can assist in mixing, has high heat transfer coefficient, good temperature uniformity, high reaction rate and high product yield under the same heat exchange area, is suitable for different reaction requirements, and avoids damaging the flow pattern.

The invention relates to a method for producing a polymer dispersion, to a polymer dispersion and to the use thereof. The method for preparing a water-in-water polymer dispersion utilizes a batch reactor that provides a specific shear distribution wherein the method comprises the step of free radical polymerization of an aqueous reaction mixture to synthesize a dispersed polymer and form a water-in-water polymer dispersion, the aqueous reaction mixture comprises (a) a polymeric dispersant and (b) a monomer composition comprising a radically polymerizable monomer, wherein the radically polymerizable monomer is selected from one or more of a nonionic ethylenically unsaturated monomer, a cationic ethylenically unsaturated monomer, and an amphiphilic ethylenically unsaturated monomer.

This invention discloses a method for preparing methanesulfonic acid with low sulfate residue. The method includes the following steps: in a batch reactor, using dimethyl disulfide with a dimethyl polysulfide content of less than 350 ppm, preferably less than 220 ppm, as raw material, the reaction is carried out in the presence of a catalyst and an oxidant; after the reaction is terminated, the reaction solution is post-treated to obtain methanesulfonic acid. This invention solves the problem of high sulfate content in the product methanesulfonic acid by controlling the dimethyl polysulfide content in the raw material, resulting in a higher quality product and a significant reduction in the content of heavy component impurities. This not only improves the product yield but also simplifies the deweighting process or reduces energy consumption.

The invention discloses a method for preparing hydroxyl silicone oil by using a micro-channel reactor, which comprises the following steps: respectively pumping dimethyldichlorosilane and a hydrolysis medium into the micro-channel reactor by a plunger pump to carry out primary hydrolysis reaction, and adjusting the reaction pressure in the first micro-channel reactor by a back pressure valve; separating an oil-water mixture after the reaction into a hydrolysate and a water-phase medium containing ammonium chloride through a phase separator; by utilizing the excellent mass transfer and heat exchange performance of the micro-channel reactor, not only is the reaction time greatly shortened, but also compared with the traditional kettle reaction, the loss of dropwise added feed and the risk that the raw material dimethyldichlorosilane and the hydrolysis medium are subjected to violent hydrolysis reaction to release heat and are easy to spray are reduced, the safe production of the hydroxyl silicone oil is realized, and the production cost is reduced. The method has the advantages of high efficiency, energy conservation, easiness in control, few three wastes and the like.

This utility model relates to the field of hydrogenation reactor technology and discloses a pipeline sealing device for a negative pressure chamber of a hydrogenation reactor, including a batch reactor. A conveying pipeline is provided on the upper surface of the batch reactor, and an electric shut-off valve is installed on the conveying pipeline. The batch reactor is equipped with a pipeline sealing mechanism, which includes a fixed column and a sliding groove. In this pipeline sealing device for the negative pressure chamber of the hydrogenation reactor, the clamping plate, under the action of the fixed plate and fixed block, applies a counter-force to the conveying pipeline, ensuring pipeline stability. Simultaneously, the rubber sealing ring on the inner wall of the pipeline precisely corresponds to the sealing groove, and the compression of the clamping plate ensures that the rubber sealing ring fully fills the gap, forming a tight sealing layer. This design effectively prevents material leakage from the pipeline connection, ensuring the reliability of the seal even under negative pressure conditions, and improving the safety and stability of the hydrogenation reactor operation.

The invention discloses a device and a process for continuously synthesizing electronic-grade methyldiethoxysilane and co-producing hydrogen chloride. An outlet of an n-hexane raw material tank is connected with an inlet of a methyldichlorosilane raw material tank through a pipeline; an outlet of the methyl dichlorosilane raw material tank is connected with a first feeding hole of the intermittent reactor; an outlet of the ethanol raw material tank is connected with a second feeding hole of the intermittent reactor through a pipeline; a gas phase outlet of the intermittent reactor is connected with an inlet of the light component collecting tank through a pipeline; a liquid phase outlet of the intermittent reactor is sequentially connected with a solvent removal tower, a light component removal tower and a heavy component removal tower through pipelines; and a tower top outlet of the heavy component removal tower is connected with an electronic-grade methyldiethoxysilane product tank. According to the method, the good yield of electronic-grade products can be guaranteed, in addition, online organic component analysis is carried out on the materials obtained after two times of rectification, it can be fully guaranteed that the organic purity of the materials is maintained to be 99.9% or above, the total metal content is 50 ppb or below, and finally electronic-grade qualified products are obtained.

The invention discloses a system and a method for producing hydroxyl deuterated straight-chain alcohol. The system comprises a tank reactor, a rectifying tower, a primary condenser, a first receiving tank, a second receiving tank and a switching type valve pipe group device, wherein the top of the tank reactor is connected to the bottom of the rectifying tower, and the top of the rectifying tower is connected to a gas phase inlet of the primary condenser; the first receiving tank and the second receiving tank are selectively communicated with the feeding hole of the reaction kettle or the liquid phase outlet of the primary condenser through the switching type valve pipe group device. According to the method, azeotropic limitation can be thoroughly broken, sufficient conversion of reactants is realized, and meanwhile, high yield and efficient continuous production are taken into account.

This invention relates to a method for preparing calcium gluconate using microchannel continuous flow reaction technology. Employing a Corning microchannel reactor for continuous production of calcium gluconate represents a breakthrough from conventional batch oxidation reaction processes. Under sodium nitrite / nitric acid reaction conditions, this invention utilizes a microchannel continuous flow reactor for oxidation followed by a salt conversion reaction to obtain calcium gluconate, achieving a total yield of over 90%. Compared to traditional processes, this technology offers faster reaction rates and shorter production times for calcium gluconate, solving the problem of uncontrolled exothermic reactions during scale-up in traditional batch batch reactors. It is simple to operate, significantly improves yield, allows for seamless scale-up, and minimizes environmental pollution, making it suitable for industrial production.

The invention provides an industrial solid waste-based carbon powder catalyst as well as a preparation method and application thereof, and relates to the technical field of chemical recovery of waste plastics. The industrial solid waste-based carbon powder takes biochar as a substrate, and effective components comprise biomass components and element components such as silicon, aluminum, iron, calcium, magnesium and titanium. The waste plastic cracking method comprises the following steps: adding waste plastic and a catalyst into a batch reactor, and then carrying out waste plastic thermal cracking at a certain temperature to prepare oil. The plastic comprises polyethylene and polypropylene; the plastic oil is C5-C20 hydrocarbon substances and comprises alkane, olefin and aromatic hydrocarbon; the catalyst is an industrial solid waste-based carbon powder catalyst. Efficient conversion of waste plastics can be achieved, the prepared fuel oil is high in yield and heat value, and the problem of plastic garbage pollution can be effectively relieved; the adopted catalyst is low in cost and has good economic feasibility.

The present invention relates to a method for producing a thermally inhibited starch, the method comprising providing a volume of dehydrated starch having a pH value between 7.0 and 11 and having a moisture content of <2 wt. %, based on the weight of the starch, in a stirred batch reactor, said reactor being comprised with a gas inlet, and applying a flow of gas through the volume of dehydrated starch in the reactor while heating and stirring the starch to a temperature of at least 140° C. for a period of time sufficient to thermally inhibit the starch. In addition, the invention relates to a device for thermally inhibiting starch and use of a flow of gas in a stirred batch reactor during thermal inhibition of starch.

Systems and methods are provided for the destruction and disposal of fluorinated materials (e.g., PFAS) while reducing gaseous PFC emissions. The method can be applied in a batch reactor or in situ to soil or other environmental media containing PFAS, such as at a soil site. The method may include mixing PFAS, a hydroxide base, and optionally a solvent in a batch reactor to form a suspension. The reaction mixture can be heated to a temperature of 25°C to 400°C for about 0.5 hours to 240 hours to defluorinate the corresponding PFAS fluorocarbons and produce defluorinated waste products. Alternatively, the suspension can be maintained at room temperature for a sufficient time. Alternatively, a hydroxide base and optionally a solvent can be sprayed onto the PFAS and optionally heated. This method converts organic fluorine present in PFAS-contaminated soil into inorganic fluorides.

An in-situ sampling and molecular weight detection system for a batch reactor is disclosed. The system includes: a batch reactor including an inlet through which a reactant solution is selectively supplied and an outlet through which a product formed by a reaction of the reactant solution is selectively discharged; a sampling line connected to the reactor, the reactant solution in the reaction selectively flowing through the sampling line; and a plurality of sampling valves mounted on the sampling line and configured to selectively open and close the sampling line, where the plurality of sampling valves may be configured to sequentially open and close from a sampling valve relatively close to the batch reactor to a sampling valve relatively away from the batch reactor.

This invention discloses an integrated device and a method for rapid cultivation of aerobic granular sludge suitable for low-concentration domestic sewage, along with its application. The device comprises a batch reactor body integrating the following functional units: a full-area water distribution unit, including a main inlet pipe and distributed water distribution components; one end of the main inlet pipe is connected to the sewage source, and the other end extends to the bottom of the reactor cavity; the distributed water distribution components are connected to the main inlet pipe and equipped with multiple water distribution holes; a dual-zone aeration unit, including an air pump, a bottom aeration unit with a wide range of adjustable air volume, and a middle aeration unit with precise air volume control; a flow field optimization unit, located at the upper part of the reactor cavity and connected to the main inlet pipe; and a timing control unit, electrically connected to the full-area water distribution unit and the dual-zone aeration unit. The advantages of this invention are: by creating sedimentation selective pressure through dual-zone aeration to achieve sludge stratification, enhanced denitrification of heavy granular sludge, and removal of excess phosphorus from light flocculent sludge, it also has the advantages of shortening the cultivation cycle of aerobic granular sludge and highly efficient denitrification and phosphorus removal.

This invention discloses a continuous synthesis method and apparatus for liquid lithium hexafluorophosphate, comprising the following steps: S1, continuously adding lithium fluoride and an organic solvent into a mixing vessel to obtain lithium fluoride mother liquor, and continuously introducing a phosphorus pentafluoride mixed gas into a primary reactor; S2, continuously conveying the lithium fluoride mother liquor to the primary reactor for reaction with the phosphorus pentafluoride mixed gas; the primary reactor conveys the reacted material to a secondary reactor, while simultaneously conveying the unreacted phosphorus pentafluoride mixed gas to the secondary reactor for further reaction; S3, the secondary reactor transfers the unreacted gas out of the reaction system; the material obtained from the secondary reactor is continuously collected into a settling tank; S4, the top of the settling tank collects the synthesis liquid without lithium fluoride solids into a product receiving tank. This invention solves the synthesis efficiency bottleneck of traditional batch reactors and effectively improves the production capacity of liquid lithium hexafluorophosphate per unit time.

The present invention relates to a batch reactor comprising an aqueous reaction mixture for the preparation of a water-in-water polymer dispersion by free radical polymerization wherein the batch reactor comprises a stirrer treated by a grinding and polishing technique or wherein the batch reactor is free of baffles. Furthermore, the invention relates to a method for producing a water-in-water polymer dispersion by free-radical polymerization in said batch reactor. Furthermore, the invention relates to the use of said batch reactor in a method for producing a water-in-water polymer dispersion.