74 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.

This invention relates to the technical field of organometallic compound production, and discloses a method and apparatus for synthesizing a homogeneous organic molybdenum-containing compound and its application. The method is implemented in a system containing a first reaction unit and a second reaction unit. The first reaction unit comprises at least two batch reactors connected in series. The batch reactors are cylindrical structures containing an inner cylinder and an outer cylinder. The inner cylinder and the outer cylinder are kept in communication so that the material in the inner cylinder can overflow into the outer cylinder. The method includes: introducing a molybdenum-containing material and an organic ligand material into reaction unit 1 for a first reaction to obtain gas phase I and liquid phase I; introducing the organic ligand material and the liquid phase I into the second reaction unit for a second reaction to obtain gas phase II and the homogeneous organic molybdenum-containing compound. The method provided by this invention features high reaction mass transfer efficiency and high conversion rate.

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.

The utility model relates to the field of auxiliary equipment related to exhaust of reaction kettles, in particular to a batch-type reaction kettle feeding and exhaust buffer device, which is used for being connected with a reaction kettle for use and comprises a gas holder, a piston is arranged in the gas holder and divides an inner cavity of the gas holder into an upper cavity and a lower cavity, and the upper cavity is communicated with the lower cavity. The gas holder is provided with a connecting port I and a connecting port II which are communicated with the upper cavity, the connecting port I is connected with a vacuum pump, the connecting port II is connected with nitrogen, the gas holder is provided with a gas inlet and a drain outlet which are connected with the lower cavity, the gas inlet is connected with a filtering device, and the filtering device is connected with the reaction kettle. According to the utility model, the risk that a gasified solvent overflows from the feeding port is reduced, and the risks of personnel poisoning and fire explosion are avoided; and the blow-down pipe is not directly emptied any more, so that the risk that the solvent overflows into the air to pollute the atmosphere and fires and explodes is avoided, the solvent loss is also reduced, and the production cost is reduced.

The invention belongs to the field of preparation of tobacco flavors and fragrances, and discloses a natural caramel sweet spice with a chicory characteristic flavor as well as a preparation method and application of the natural caramel sweet spice. Putting the cichorium intybus root powder and water into an intermittent reaction kettle, separating and extracting effective components of the cichorium intybus roots by utilizing subcritical water, and coupling a Maillard reaction and a caramelization reaction to obtain a mixture; the preparation method comprises the following steps: mixing a solid-phase component 1 and a liquid-phase component 2, filtering to obtain a liquid-phase component 1, ultrasonically extracting the solid-phase component with an ethanol solution, filtering to obtain a liquid-phase component 2, combining the liquid-phase components, carrying out sephadex tandem reverse-phase silica gel column chromatography separation to obtain a plurality of graded components, and designing and optimizing a recombination ratio according to a mixed material uniform test with constraint conditions to prepare the cigarette flavoring agent. Subcritical hydrothermal separation, high-temperature and high-pressure reaction enhancement and uniform mixing design optimization recombination with constraint conditions are introduced in the preparation process of the chicory special flavor caramel sweet spice, so that the caramel sweet aroma characteristics of the chicory special flavor are remarkably highlighted, and the natural caramel sweet aroma raw material resources are enriched; and a new thought is provided for development of high-quality natural sweet fragrant raw materials.

The invention belongs to the field of organic synthesis, and particularly relates to a method for synthesizing 1-nitroanthraquinone by a high-speed sheet-shaped horizontal reactor. Specifically, anthraquinone is taken as a substrate, and 1-nitroanthraquinone is generated through nitration in a high-speed sheet-shaped horizontal reactor. The device has the beneficial effects that the heat exchange area is increased, so that the nitrification heat exchange efficiency is high, and the nitrification is thorough; the problems of blockage of a continuous flow reactor, explosion easily caused by excessive temperature accumulation of a kettle type reactor, high nitrate concentration on the surface and non-uniform reaction of upper and lower layers are avoided, and the reactor is better suitable for viscous materials; the temperature of the cooling liquid of the high-speed sheet-shaped horizontal reactor is close to the reaction temperature, so that smooth reaction is guaranteed, and explosion caused by sudden reaction due to sudden reaction caused by accumulation of reactants to a certain amount due to reaction stop caused by too low temperature of a reaction medium is avoided.

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.

A method of manufacturing a positive active material precursor using a batch reactor according to the present disclosure, the method comprising the steps of: (S1) forming a core of the precursor; (S2) growing the core formed in step S1; (S3) further growing the core grown in step S2; and (S4) further growing the nucleus grown in step S3, where the stirring speed in the batch reactor is set to: 200 rpm to 900 rpm during step S2, 800 rpm or less during step S3, and 700 rpm or less during step S4, and the reaction solution is designed to overflow when the batch reactor is full thereof.

The invention relates to the technical field of iron phosphate preparation, and discloses a method and device for continuously synthesizing iron phosphate, and the method comprises the following steps: 1) respectively adding iron powder and dilute sulphuric acid into a first continuous tubular reactor; 2) respectively pumping the ferrous sulfate solution and the phosphate solution into a second continuous tubular reactor; 3) continuously feeding the slurry into a crystal transformation aging kettle; 4) continuously conveying the aged slurry into a horizontal screw centrifuge for solid-liquid separation; 5) continuously conveying solids obtained by solid-liquid separation in the step 4) to a re-pulping tank, adding pure water, re-pulping and washing; 6) continuously conveying a filter cake to flash evaporation drying and high-temperature calcination, and then crushing, packaging and demagnetizing to obtain an iron phosphate product; according to the invention, the quality stability is ensured, the product production cycle is shortened, and the product quality stability is improved; the problem that a large amount of hydrogen escapes from a traditional kettle type reaction kettle to cause safety risks is solved.

A method for producing a positive electrode active material precursor according to the present disclosure comprises: a first step of generating a core of a precursor; and a second step of growing the nuclei formed in the first step, in which a transition metal compound solution is fed into the batch reactor at a flow rate of 15 mL / min to 55 mL / min during the first and second steps, in which the stirring speed inside the reactor during the first step is between 200 rpm and 875 rpm, and the stirring speed inside the reactor during the second step is between 200 rpm and 875 rpm. And the stirring speed inside the reactor during the second step is 475 rpm or less.

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.

This invention belongs to the field of thermoplastic elastomer material polymerization and catalytic hydrogenation, specifically relating to an SEBS binder, its preparation method, its application, and its apparatus. After a first-stage polymerization reaction involving a styrene solution, a regulator, and an initiator, a second-stage polymerization reaction is carried out with butadiene in a microchannel reaction unit. A third-stage polymerization reaction is then carried out with styrene in a static mixer 1. The reaction is terminated by end-capping with a capping agent to obtain a capped SBS solution. This capped SBS solution is mixed with a homogeneous catalyst in a static mixer 2 and then introduced into a high-pressure reactor reaction unit for hydrogenation to obtain SEBS. The continuous polymerization technology for preparing SBS in this invention has better mass and heat transfer and higher efficiency than traditional batch reactor polymerization and hydrogenation technologies, and the resulting product has superior quality. It has broad market application and development prospects in the continuous industrial preparation of "green, high-end SEBS".

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.

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

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.

A system for producing a fibroin protein product includes a first batch reactor, an inline mixer, a pressurization tapering section, a second batch reactor, and a filtration unit. A method for producing a fibroin protein product includes dissolving fibroin protein in aqueous-based fluid in a first batch reactor, and producing the pretreatment solution and pumping it to an inline mixer. The method includes feeding a salt feed upstream of the inline mixer to mix with the pretreatment solution. The method includes exerting a shear force by the inline mixer to the mixture of the salt feed and the pretreatment solution, producing an intermediate solution, and flowing the intermediate solution to a pressurization tapering section to promote a transformation of the intermediate solution into a fibroin protein product. The method includes filtering the fibroin protein product using a filtration unit to remove unreacted reagents, producing a filtered fibroin protein product.

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%.

An in-situ sampling and molecular weight measurement system of a batch reactor is disclosed. The system comprises: a batch reactor including an inlet through which a reactant solution is selectively supplied and an outlet through which a product formed by reaction of the reactant solution is selectively discharged; a sampling line connected to the reactor and through which the reactant solution in reaction selectively flows; and a plurality of sampling valves mounted on the sampling line and configured to selectively open and close the sampling line, wherein the plurality of sampling valves are configured to be sequentially opened and closed from those located relatively close to the batch reactor to those located relatively farther from the batch reactor.

The utility model relates to the technical field of water treatment, in particular to a semi-automatic constant-flow water distribution device suitable for a batch reactor, which comprises a main liquid storage tank, an auxiliary liquid storage tank and a dilution mixing barrel, the first pipeline is communicated with the diluting and mixing barrel; the auxiliary liquid storage tank is communicated with a second pipeline; the control unit is connected with the first driving piece and the second driving piece; the batch reactor further comprises a fourth pipeline communicated with the dilution mixing barrel, a control piece is arranged on the fourth pipeline, and the problem that an existing batch reactor is prone to being affected by oxygen, so that the concentration of mother liquor containing reducing components is rapidly changed is solved. Meanwhile, the problem that the experiment repeatability is poor and is not suitable for teaching popularization due to the fact that water distribution work of an existing laboratory batch reactor depends on manual operation is solved.

The invention belongs to the technical field of pesticides, and particularly relates to a full-continuous flow production process of hymexazol. The process comprises the following steps: continuously feeding a hydroxylamine hydrochloride aqueous solution, a sodium hydroxide aqueous solution and acetoacetate raw materials into a first continuous tubular reactor through a first micro-mixer to perform a hydroxyamination reaction, then feeding a reaction solution into a second continuous fixed bed reactor, and performing a cyclization reaction under the catalysis of a solid acid catalyst, and performing post-treatment to obtain a target product. Compared with the traditional intermittent kettle type synthesis method, the process disclosed by the invention has the advantages of high yield, short reaction time, high automation degree, high space time yield, low energy consumption, small pollution and no amplification effect, and is easy for industrial production and application.

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 manufacturing a positive electrode active material precursor having excellent sphericity, a uniform particle size distribution, and reduced particle agglomeration by carrying out a reaction for manufacturing a positive electrode active material precursor seed in a continuous stirred tank reactor (CSTR), and introducing the manufactured precursor seed into a batch reactor and growing same, wherein a positive electrode active material precursor particle seed introduced into the batch reactor is introduced in an appropriate amount.

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.