59results about "Liquid-liquid reaction processes" patented technology

The invention belongs to a production system and a production process of sodium methoxide. Comprising a sodium methoxide reaction tower, a methine solution pipeline, a refined methanol pipeline and a sodium methoxide storage tank, the methine solution pipeline is connected with an inlet in the upper portion of the sodium methoxide reaction tower through a tube pass of a methanol reaction tower kettle liquid heat exchanger, and a liquid phase outlet in the bottom of the sodium methoxide reaction tower is connected with an inlet of a sodium methoxide reaction tower kettle liquid evaporator; a liquid phase outlet of the sodium methoxide reaction tower kettle liquid evaporator is connected with a sodium methoxide storage tank through a methanol reaction tower kettle liquid heat exchanger shell pass; the refined methanol pipeline is connected with a lower gas-phase inlet of the sodium methoxide reaction tower through a tower top heat exchanger shell pass of an amide rectifying tower in the amide production unit, and the refined methanol pipeline is connected with a lower gas-phase inlet of the sodium methoxide reaction tower through a bottom liquid heat exchanger tube pass of a methanol rectifying tower in the amide production unit; according to the thermodynamically coupled sodium methoxide-amide collaborative production system, a cross-device energy and material collaborative network is constructed, so that the double breakthrough characteristics of energy conservation and product quality improvement are realized.

The invention relates to an improved process for the manufacture of a fluorinated organic compound, wherein the process comprises a fluorination reaction of an organic precursor compound having at least one chlorine substituent and / or at least one double bond, and said organic precursor compound is reacted in liquid phase in HF (hydrogen fluoride) serving as solvent and fluorinating agent in the presence of a fluorinating catalyst, and wherein the fluorination reaction is performed in liquid phase in a SiC block chemical reactor, and wherein the reaction mixture is withdrawn from SiC block chemical reactor, and wherein the process comprises optionally isolating and / or purifying the targeted fluorinated organic compound.

The invention provides a pipeline premixer, a multi-component liquid-phase reactant pipeline premixing system and method and application of the pipeline premixer and the multi-component liquid-phase reactant pipeline premixing system and method. The pipeline premixer is used for pre-mixing multi-component liquid phase reactants and sequentially comprises a variable-pitch spiral flow guide section, a spiral flow guide section, a spiral flow guide section and a flow guide section in the fluid direction, and the variable-pitch spiral flow guide section is used for increasing the fluid Reynolds number to a turbulent flow area; the multi-taper-hole shear plate section is used for shearing fluid so as to generate a local cavitation effect; and the helical tooth staggered mixed grid section is used for enabling the fluid to generate a Karman vortex street. Compared with the prior art, the pipeline premixer, the multi-component liquid phase reactant pipeline premixing system, the method and the application have the advantages that molecular-level uniform mixing of multi-component reactants is realized by arranging the variable-pitch spiral flow guide section, the multi-taper-hole shear plate section and the helical-tooth staggered mixing grid section; therefore, the problem of non-uniform component distribution caused by mixing delay in the kettle can be solved.

The application provides a low-temperature methanol washing and urea generation combined energy-saving system and method, comprising a feed heat exchanger, a cooling separation unit, an absorption tower, a liquid phase treatment unit and a urea synthesis unit, each unit cooperatively realizing process deep integration and energy coupling; the application takes the purified reflux liquid phase CO2 as the cooling source of the cooling separation unit, without external refrigeration, reducing low-temperature methanol washing cooling source consumption, also reducing the absorption tower treatment load, reducing its energy consumption, equipment investment and CO2 emission; the product liquid phase CO2 is directly supplied to the urea synthesis after cold energy recovery through the heat exchanger, replacing the traditional CO2 gas pressurization process, eliminating the secondary energy consumption of transportation. The multi-channel heat exchanger realizes cold energy step-by-step utilization, improving the overall energy efficiency. The application realizes self-provided cold energy and efficient energy recovery, achieves CO2 resource utilization, simplifies the process and reduces the maintenance cost, and the system is economic and environmentally friendly, and is suitable for industrial application of coal chemical industry and chemical fertilizer production.

This application discloses a process and apparatus for the continuous preparation of lithium difluorooxalate borate, relating to the field of lithium salt additive preparation technology. The process mainly includes a pretreatment step, a continuous reaction step, and a spray drying step. Specifically, it includes: preparing an oxalic acid solution and dehydrating the oxalic acid solution to obtain a dehydrated oxalic acid solution with a moisture content of less than 20 ppm; continuously pumping a lithium tetrafluoroborate solution, trimethylchlorosilane, and the dehydrated oxalic acid solution into a spiral pipe reactor for reaction to obtain a lithium difluorooxalate borate reaction solution; and spray drying the lithium difluorooxalate borate reaction solution to remove organic solvents, obtaining crude lithium difluorooxalate borate. This application precisely controls the moisture content in the raw materials, enabling large-scale continuous production and effectively avoiding the problems of caking and sticking to the walls during the drying process. It also solves the problems of corrosion caused by excessive moisture and low drying efficiency in the preparation of lithium difluorooxalate borate, thus improving production efficiency and product yield.

The present application relates to the field of liquid-liquid two-phase reaction, and discloses a kind of liquid-liquid two-phase reaction method, liquid-liquid two-phase reaction device and application, the method includes: in the one side of permeation medium and set up the first region containing first reactant, in the other side of permeation medium and set up the second region containing second reactant;The pressure P1 of setting the first region is less than the pressure P2 of the second region;Under the action of pressure difference between pressure P1 and pressure P2, the second reactant passes through the permeation medium, contacts the first reactant and reacts;The first reactant is the first liquid phase reactant, and the second reactant is the second liquid phase reactant.The method provided by the present application controls the suction force between the two-phase reaction zone, and then controls the reaction speed, ensures that the reactants are efficiently mixed and reacted, shortens the total reaction time, does not need to dilute the reactants by a large multiple, effectively reduces the cost of reactant materials, and improves the reaction efficiency.

A uniform flow distribution device including a single substrate provided having flow channels connecting one inlet and a plurality of outlets. The flow channels include a flow distribution section configured to distribute a liquid introduced into the inlet of the substrate into a plurality of branch flow channels that connect to the outlets, and a flow resistance section that is located downstream of the flow distribution section and configured to provide flow resistance to each of the branch flow channels.

The invention relates to the technical field of liquid-liquid reaction, is suitable for chemical reaction of gas generated by liquid-liquid reaction, and particularly discloses a liquid-liquid two-phase reaction device which comprises a reaction tube, a feeding tube is mounted at the top of the reaction tube, and a first reactor is arranged in the reaction tube and located below the feeding tube. Continuous reaction discs are arranged in a tube body below the first reactor in the reaction tube in a staggered manner; reaction liquid is continuously introduced into the feeding pipe, so that the reaction liquid overflows out of the first reactor and then enters the continuous reaction disc for step-by-step reaction; a gas outlet is formed in the top of the reaction tube and is used for discharging a gas product generated by reaction; and the bottom is provided with a waste liquid outlet for discharging reacted waste liquid. The number of the feed ports can be adjusted according to liquid types, and the reaction kettle is suitable for reaction of various liquids; the first reactor and the continuous reaction disc are designed in the reaction tube, so that the reaction efficiency and the product purity are improved; a waste liquid outlet is formed in the lower part of the reaction tube, so that the reaction can be continuously carried out and the experiment efficiency is improved.

The application discloses an immersed self-suction type rotating packed bed, which comprises a motor, a shell, a liquid inlet, a rotor assembly, a stator and a liquid outlet; the rotor assembly comprises a rotor, a composite filler impeller, a first rotating shaft and a second rotating shaft; the rotor is fixedly connected with the output shaft of the motor through the first rotating shaft; the second rotating shaft is coaxial with the first rotating shaft and is arranged on the opposite side of the first rotating shaft, and the top end of the second rotating shaft is rollingly sleeved with the shell; the second rotating shaft is a hollow channel structure, and the end of the liquid inlet is connected with the hollow channel of the second rotating shaft; the composite filler impeller comprises annular fillers, inner vanes and outer vanes; the inner vanes are fixedly arranged on the inner side of the annular fillers, and the outer vanes are fixedly arranged on the outer side of the annular fillers. The rotating packed bed has the mixing characteristics of the rotating packed bed and the conveying characteristics of the centrifugal pump, and as a pre-reactor, the material can reach the best mixing state before entering the main reactor.

A flow reactor that mixes a first and a second fluid, wherein the first fluid flows toward a first tip between an inner wall of a first inner tubular portion and an outer wall of a second inner tubular portion, the second fluid flows toward a second tip inside the second inner tubular portion, a third fluid having low affinity for the first and the second fluid flows toward a downstream end between an outer wall of the first inner tubular portion and an inner wall of an outer tubular portion, the second tip of the second inner tubular portion does not protrude further to the side of the downstream end than the first tip of the first inner tubular portion, and the first tip is located closer to the side of the upstream end than the downstream end when viewed from a direction orthogonal to the flow direction.

The invention provides a system and a method for preparing oxalic acid by hydrolyzing dimethyl oxalate. The system comprises a pre-reaction kettle, a methanol tower, a hydrolysis tower, a methanol tower condenser, a mother liquor heat exchanger and a crystallization unit which are connected with one another through pipelines. The method comprises the following steps: feeding a mixed solution of fresh dimethyl oxalate and desalted water and a thermally coupled circulating mother solution into a pre-reaction kettle for primary hydrolysis reaction, then feeding into a methanol tower for reactive distillation, returning a tower bottom solution to a hydrolysis tower material for reactive distillation, and returning a gas phase at the top of the hydrolysis tower to the bottom of the methanol tower material for feeding, refined methanol is extracted from the top of the methanol tower, one stream of oxalic acid hydrolysate in the kettle of the hydrolysis tower is mixed with the mother liquor and enters the pre-reaction kettle, and the other stream of oxalic acid hydrolysate is thermally coupled with the mother liquor and then enters the crystallization unit to obtain refined oxalic acid. The dimethyl oxalate conversion rate is high, the methanol purity is high, the monomethyl oxalate content in the oxalic acid hydrolysate is low, oxalic acid crystallization and thermal coupling of the mother liquor and the hydrolysate are facilitated, and the overall energy consumption is reduced.

The invention provides a process for producing biographite from a biocarbon feedstock, comprising: providing a metal-containing species that is a metal carbide or is capable of forming a metal carbide; feeding a biocarbon feedstock and the metal-containing species into a molten metal carbide reactor having a first reaction zone and a second reaction zone, wherein the first reaction zone is operated at a first-zone temperature selected to achieve a molten state comprising the metal carbide, and wherein the second-zone temperature is lower than the first-zone temperature; operating the molten metal carbide reactor to dissolve carbon (from the biocarbon feedstock) in the molten state, thereby generating dissolved carbon, and to produce biographite from the dissolved carbon; recovering biographite product; and recycling a portion of the biographite to the molten metal carbide reactor. The recycled biographite functions as a graphitization template to enhance formation of biographite from the dissolved carbon.

The invention provides an application of a benzoate compound in a synthesis process of copper phthalocyanine, which comprises the following steps: S1, adding 3g of benzoate compound, 310g of 100% phthalic anhydride, 231g of urea and 1500ml of solvent alkylbenzene into a 3000ml three-neck bottle provided with a stirring device, a thermometer and a condenser, uniformly heating to 170 DEG C within 4 hours while stirring, and keeping the temperature for 2 hours; s2, 231 g of urea is added, the temperature is evenly increased to 190 DEG C within one hour, and heat preservation is conducted for 2 hours; s3, adding 61 g of 100% cuprous chloride and 4 g of 100% ammonium molybdate, uniformly heating to 210 DEG C within 5 hours, carrying out heat preservation and stirring reaction for 6 hours, and cooling to 100 DEG C; according to the application of the benzoate compound in the synthesis process of the copper phthalocyanine, a proper amount of the benzoate compound is added in the synthesis process of the copper phthalocyanine, so that the product yield is increased, the consumption of raw materials is reduced, and the emission of three wastes is reduced, and therefore, the production cost is reduced, and the pollution to the environment is reduced.

The present invention provides a hydrodynamic-cavitation-based liquid-liquid reactor and a method thereof, and an apparatus. The reactor comprises a chamber A and a chamber B, wherein the chamber A is configured to convey a first fluid so as to make same rotatably enter a cavitation reaction unit in a central region; the chamber B is configured to convey a second fluid so as to make same rotatably enter the cavitation reaction unit to mix with the first fluid; and an axially adjustable flow guide member is provided in the central region to assist with drainage. The present invention achieves high-efficiency mass transfer of multiphase fluids in a controllable cavitation field by means of an innovative dual-tangential reverse feeding structure, adjustable flow guidance and Venturi coupling design, forming reaction intensification through swirling flow impingement, mixing and cavitation collapse; moreover, intelligent regulation and control of a reaction path is achieved by means of the micro-injection of gas and flow field adjustment, thus significantly improving the reaction rate, selectivity and energy efficiency ratio. Thus, the present invention has good engineering adaptability and prospects for large-scale application.

The uniform flow dividing apparatus of the present disclosure is provided with a single substrate including a flow path connecting one introduction port and a plurality of discharge ports. The flow path includes: a flow dividing portion that divides the liquid introduced into the introduction port of the substrate into a plurality of branch flow paths connected to the discharge port; and a flow path resistance part which is located on the downstream side of the flow dividing part and applies flow path resistance to each of the branch flow paths.

The invention provides a preparation method and device of phosphorus pentafluoride, and the preparation method comprises the following steps: 1) carrying out atomization treatment on a mixed acid solution comprising a hexafluorophosphoric acid solution and a sulfuric acid solution to obtain atomized mixed acid; and 2) carrying out a thermal cracking reaction on the atomized mixed acid to obtain phosphorus pentafluoride. The preparation method of phosphorus pentafluoride provided by the invention can improve the purity of the prepared phosphorus pentafluoride, and has the advantages of high reaction efficiency, simple process and the like.

The present invention relates to a device, comprising a container defining an interior for receiving a nutritional composition, a plurality of particles within the interior of the container, and a lipase immobilized to the plurality of particles so that the nutritional composition is exposed to the lipase when the nutritional composition is received within the container, wherein the lipase is configured to hydrolyze long-chain polyunsaturated fatty acid (LC-PUFA) triglycerides within the nutritional composition, and wherein the lipase is immobilized within the container such that when the nutritional composition exits the container, the lipase remains in the container.

The invention relates to the field of organic synthesis, and particularly discloses a 2, 4-difluoroaniline continuous flow diazotization method and system.The method comprises the steps that a sulfate solution of 2, 4-difluoroaniline and a sodium nitrite aqueous solution are prepared; continuously and stably conveying the obtained sulfate solution of 2, 4-difluoroaniline and the sodium nitrite aqueous solution to a micro-mixer, and then conveying to a continuous flow reactor for diazotization reaction to obtain a 2, 4-difluorobenzene diazonium sulfate solution; monitoring the reaction condition in the reaction process, and judging the reaction endpoint; after the diazonium liquid is qualified in central control, the diazonium liquid is directly used for various reactions in the next step or low-temperature quenching storage. The method lays a good foundation for continuous flow diazotization production, industrialization and scale production, improves the conversion rate of raw materials, improves the yield of diazonium salt, stabilizes the quality of the diazonium salt, reduces the quality deviation, and is beneficial to production control of products, so that the purity is controlled to be greater than or equal to 95.0% in a continuous flow process, and the content of phenolic impurities is less than or equal to 5.0%.

This invention discloses a vinyl chloride production apparatus and method. The vinyl chloride production apparatus includes a primary reaction tower, a secondary reaction tower, a heat exchanger, a circulating pump, and a catalyst storage tank. The bottom outlet of the catalyst storage tank is connected in series with the circulating pump and the heat exchanger via a pipeline, and then branched into two pipelines. One pipeline connects to the first inlet of the primary reaction tower, and the other pipeline connects to the inlet of the secondary reaction tower. The outlet of the secondary reaction tower connects to the second inlet of the primary reaction tower. The outlet of the primary reaction tower is connected to the inlet of the circulating pump. The gas inlet of the primary reaction tower is connected to a raw material gas pipeline, and the gas outlet of the primary reaction tower is connected to the gas inlet of the secondary reaction tower. The top outlet of the secondary reaction tower connects to a reprocessing pipeline. This invention ensures sufficient contact between the raw material gas and the catalyst, improving catalytic efficiency and making the reaction temperature easier to control, thus reducing the fluctuation range of the reaction temperature.

The invention discloses a continuous flow synthesis method and system of an alkyl gallate compound. According to the method, gallic acid and C1-C18 straight-chain alkyl alcohol are taken as raw materials, and continuous flow esterification synthesis is realized in a micro-structure reactor in the presence of an acid catalyst. By accurately controlling the reaction temperature, pressure and residence time, the process can be used for efficiently preparing various alkyl gallate with high selectivity. The method overcomes the problems of long reaction time, easy side reaction, non-uniform product quality, difficult amplification and the like of the traditional intermittent process, and has the outstanding advantages of high reaction speed, high product purity, high yield, safe and environment-friendly production process, easy amplification, strong universality and the like; the method is suitable for green manufacturing of products such as propyl gallate, octyl gallate and lauryl gallate.

The invention provides an application of a rosin ester compound in a synthesis process of copper phthalocyanine. The application of the abietate compound in the synthesis process of copper phthalocyanine comprises the following steps: S1, feeding preparation: adding the 100% abietate compound, 310 g of 100% phthalic anhydride, 231 g of urea and 1500 ml of solvent alkylbenzene into a synthesis tank of a 3000 ml three-neck bottle provided with a stirrer, a thermometer and a condenser, and completing initial feeding of materials; s2, carrying out primary heating and heat preservation, keeping a stirring state, and uniformly heating the system to 170 DEG C within 4 hours; according to the application of the rosin ester compound in the synthesis process of copper phthalocyanine, the purity and quality are more stable, in addition, the raw material waste is reduced by improving the reaction sufficiency, the raw material unit consumption of a unit product is reduced, byproducts are reduced, and in the follow-up post-treatment links such as solvent recycling through steam distillation, filtering, washing and drying, the yield of copper phthalocyanine is increased. The discharge amount of three wastes is correspondingly reduced, and the production efficiency, the product quality and the environmental protection requirements are considered.

A radial flow processing device includes a body with an inner chamber, a pair of inner and outer concentric tubes extending into the body, and a processing disk containing a central opening through which the inner tube extends, the disk being connected with the inner tube. The body has a top wall, a bottom wall, and at least one side wall which define the inner chamber. The bottom wall, top wall, or both, contain at least one opening through which at least one tube extends. A diameter of the inner tube is less than a diameter of the outer tube such that there is a space between both tubes, and a diameter of the disk is less than a width of the body.

The application provides a liposome synthesis method and a synthesis device, and the method comprises the following steps: two liquids of an organic phase and an aqueous phase are respectively introduced into two sample introduction channels of a Y-shaped flow channel; the Y-shaped flow channel comprises the two sample introduction channels and a synthesis channel which is in communication with the converging position of the two sample introduction channels; a special ultrasonic device in the shape of a regular pentagon arranged at the bottom of the synthesis channel is driven to work, and at least through the micro-vortices generated in the liquid in the synthesis channel and distributed at the positions of the edges of the regular pentagon during the working of the special ultrasonic device, the two liquids in the synthesis channel are mixed to generate target liposomes. Through the cooperative design of the micro-flow channel structure and the special ultrasonic device, the synthesis efficiency of the liposomes can be significantly improved, and the average particle size and uniformity of the product in the synthesis process of the liposomes are optimized.

An apparatus of a reactor may comprise a first housing configured to accommodate one of a chemical hydride or an acid aqueous solution, a second housing configured to accommodate the other of the chemical hydride or the acid aqueous solution, wherein the second housing is different from the first housing, and a coupling assembly configured to selectively and fluidly connect the first housing and the second housing.

The present invention provides a reactor apparatus, which may include: a first shell configured to contain one of a chemical hydride or an acidic aqueous solution; a second shell configured to contain another of a chemical hydride or an acidic aqueous solution, wherein the second shell is different from the first shell; and a coupling assembly configured to selectively fluidly connect the first shell and the second shell.

This invention discloses a graded recovery device and method for nickel-cobalt hydroxide reaction overflow material. The device includes a preparation tank (1), a qualified liquid tank (2), a buffer tank (3), a reaction vessel (4), a thickener (5), a first overflow tank (6), a second overflow tank (7), a filter press (8), and an acid dissolution tank (9). All components are connected via pipes equipped with centrifugal pumps or valves. The recovery method includes the following steps: preparing a binary solution using nickel sulfate, cobalt sulfate, and pure water; storing and replenishing the binary solution; then co-precipitating the binary solution, ammonia, and liquid alkali; material growth; step (four): filtering the material in the first overflow tank and then acid dissolving it to obtain acid-dissolved material; adjusting the concentration of the acid-dissolved material with pure water for later use; returning the material in the second overflow tank to the reaction vessel as bottom material for re-co-precipitation. This invention enables the graded recovery and reuse of nickel-cobalt hydroxide reaction overflow material.

The utility model relates to the technical field of reactors, in particular to an adjustable vertical pipe continuous liquid-liquid reaction device. Comprising an inner device assembly and an outer device assembly, the inner device assembly is composed of a gas conveying pipe, a device cover, a liquid conveying pipe and an inner plate, the outer device assembly is composed of an outer plate and a liquid outlet, gas conveying disturbance is conducted through the adjustable gas conveying pipe, the problem that reactants are not fully mixed is solved, the inner device structure and the outer device structure are adopted, the reaction path is increased, and the reaction time is prolonged; the problem of insufficient reaction is solved, and then the problems that reactants are not fully mixed due to the fact that an existing reactor promotes two-phase contact reaction by means of gravity or a static mixer, and meanwhile the reaction is not sufficient due to the fact that the flow speed of fluid in the reactor is too high can be solved.

The present invention provides a flow reactor that can suppress the adhesion of products to the flow path. [Solution] The flow reactor according to the present disclosure is a flow reactor for mixing a first fluid and a second fluid, comprising: an outer cylinder portion in which a plurality of fluids can flow from the upstream end to the downstream end in the flow direction; a first inner cylinder portion disposed in a part of the interior of the outer cylinder portion and having fluid communication with the outer cylinder portion at a first tip; and a second inner cylinder portion disposed in a part of the interior of the first inner cylinder portion and having fluid communication with the first inner cylinder portion at a second tip, wherein the first fluid flows towards the first tip between the inner wall of the first inner cylinder portion and the outer wall of the second inner cylinder portion, the second fluid flows towards the second tip inside the second inner cylinder portion, and a third fluid having low affinity with the first and second fluids flows towards the downstream end between the outer wall of the first inner cylinder portion and the inner wall of the outer cylinder portion, and, when viewed from a direction perpendicular to the flow direction, the second tip does not protrude further downstream than the first tip, and the first tip is located on the upstream side of the downstream end.

The invention belongs to the technical field of defective carbon precursor preparation, and discloses a defective carbon precursor macroscopic quantity preparation method based on continuous flow synthesis and application. The preparation method comprises the following steps: introducing a metal salt solution and an organic ligand solution into a continuous flow synthesis reaction device for continuous reaction, and carrying out suction filtration, washing and drying on the obtained material to prepare a defective carbon precursor; the continuous flow synthesis reaction device comprises a mixer and a reactor; the mixer comprises a Y-channel mixer or a T-channel mixer; the reactor comprises a coil reactor. The preparation method is high in productivity, and the obtained product is controllable in performance and good in quality.