112 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 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 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 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 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, a hydroxide base, and optionally a solvent system in a batch reactor to form a suspension. The PFAS and solvent system can be provided by AFFF. The reaction mixture is heated to a temperature ranging from about 25° C. to about 400° C. for about 0.5 hours to about 240 hours to defluorinate the 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.

A system and method for destroying and disposing a fluorinated material, such as PFAS, with reduced emissions of gaseous PFC is provided. The method can be applied to soil or other environmental media containing the PFAS, for example at the site of the soil, either in a batch reactor or in situ. The method can include mixing PFAS, a hydroxide base, and optionally a solvent in the 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 a defluorinated waste product. Alternatively, the suspension can be maintained for a sufficient time at room temperature. The hydroxide base and optional solvent can also be sprayed on the PFAS and optionally heated. The method converts organic fluorine present in the PFAS contaminated soil to inorganic fluoride.

A system and method for treating, degrading, and incinerating a fluorocarbon or fluorinated material, such as Freon®, with reduced emissions of gaseous perfluorinated compounds (PFCs) is provided. The method includes mixing the fluorinated material with a hydroxide base and optionally a solvent, such as polyethylene glycol ether, N-methylpyrrolidone, cyrene, and / or deionized water in a batch reactor to form a reaction mixture, also referred to as a suspension. The reaction mixture is heated to a temperature ranging from 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 method converts organic fluorine present in the fluorinated material, such as Freon®, to inorganic fluoride. Thus, the defluorinated waste product can be incinerated with reduced emissions of harmful gaseous PFCs.

A system and method for degrading and incinerating a fluorocarbon or fluorinated material, such as per- and / or polyfluoroalkyl substances (PFAS), contained in water, such as ground water or leachate, with reduced emissions of gaseous PFC is provided. The method includes mixing the water, a hydroxide base, and optionally a solvent in a batch reactor to form a suspension. The PFAS and solvent can both be provided by the water, such as ground water or leachate. The reaction mixture is heated to a temperature ranging from about 25° C. to about 400° C. for at least about 0.5 hours to about 240 hours to defluorinate the corresponding PFAS fluorocarbons contained in the leachate water and produce a defluorinated waste product. The method can convert organic fluorine present in the PFAS within the water to inorganic fluoride. Thus, the defluorinated waste product can be incinerated with reduced emissions of harmful gaseous PFCs.

The invention discloses preparation and application methods of a modified activated carbon adsorbent applied to removal of thioether compounds in styrene. The activated carbon adsorbent is characterized in that activated carbon is modified by using an acid and metal ion compounding method, the acid is selected from one of sulfuric acid, nitric acid and hydrochloric acid, the concentration of the acid is 1-7 mol / L, the metal ion is selected from one of Cu < 2 + >, Fe < 3 + > and Zn < 2 + >, and the loading capacity of the metal ion is 0.1-20 wt% of that of the activated carbon; according to the application method, modified activated carbon is taken as an adsorbent, and thioether is adsorbed through sigma complexation in a batch reactor at 30 DEG C, so that the purpose of removing thioether compounds in styrene is achieved. The adsorbent does not adsorb styrene and adsorbs at 30 DEG C, so that the styrene is not easy to be oligomerized, the loss of the styrene is avoided, and the static sulfur capacity of the adsorbent is improved from 2.5 mg / g which is not modified to 25mg / g after modification.

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 present invention relates to a supported FeNi bimetallic catalyst and a preparation method and application thereof. The preparation method comprises the following steps: (1) adding a support and a metal precursor to deionized water, stirring, and then drying; (2) calcining under an Ar atmosphere; (3) reducing under a 5% H2 / Ar atmosphere; (4) placing the catalyst and a fatty acid in a micro-batch reactor to evaluate performance. The supported FeNi catalyst prepared by the present invention has good deoxidation activity and stability due to the synergistic effect of the bimetallic and electronic modification.

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.

Method for measuring the conversion and continuous control of a polymerisation reaction, comprising the following steps: a) carrying out a polymerisation reaction in a batch reactor (3) by reacting at least one analyte monomer in the presence of an initiator, in a solvent, at a temperature greater than or equal to the activation temperature of the initiator, in a controlled atmosphere; b) sending the gaseous mixture, coming from step a), in a liquid-gas equilibrium, to an inert chamber (7), said inert chamber (7) comprising at least one semiconductor metal oxide (MOS)-based gas sensor, each of said at least one sensor being able to progressively change, in the presence of at least one gaseous analyte monomer, at least one physical parameter, with respect to a reference condition, and of outputting a respective electrical response signal, proportional to the extent of change in said parameter; c) sending said electrical response signals, coming from step b), to electronic means (8) that are able to acquire and process said response signals in real time, producing analytical data as output, depending on the extent to which the physical parameter of each sensor changes. A further object of the present invention is a sensor system (1), configured to implement the method according to the present invention.

The invention belongs to the technical field of heterogeneous catalysis, and discloses a method for preparing a high-carbon oxygen-containing product through selective hydrogenation of carbon dioxide. A fixed bed continuous or batch reactor is filled with the supported catalyst, one or more than two of low-carbon unsaturated hydrocarbon and oxygen-containing derivatives of low-carbon hydrocarbon are combined with H2 to serve as a common hydrogen source, and the high-carbon oxygen-containing product is prepared. In conclusion, by using the process and the catalyst for efficiently preparing the high-carbon oxygen-containing product from the carbon dioxide, the high-carbon oxygen-containing product with single product distribution can be obtained under relatively mild conditions, and a new thought is provided for industrial production.

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.

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 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.

A system and method for chemically destroying, degrading and incinerating a fluorocarbon or fluorinated material, such as perfluoroalky and polyfluoroalkyl substances (PFAS), with reduced emissions of gaseous PFC is provided. The method includes mixing the fluorinated material, a hydroxide base, and optionally a solvent system in a batch reactor to form a suspension. The PFAS and solvent system 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 defluorinate the 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.

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.