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250 results about "Solid reaction" patented technology

A solid state reaction, also called a dry media reaction or a solventless reaction, is a chemical reaction in which solvents are not used. In a normal reaction, the reacting agents, also called the reactants, are placed in a solvent before the reaction can take place.

Method and apparatus for purification and separation of solid-state carbon-containing material

The present invention relates to a method for purification and separation of solid-state carbon-containing material generated from electrolysis of a molten lithium carbonate elec- trolyte and recovery of lithium carbonate The method comprises obtaining a solid reaction product formed from electrolysis of a molten lithium carbonate salt electrolyte. The solid reaction product is mixed with an aqueous source and carbon dioxide is introduced at a predetermined first pressure to produce carbon dioxide treated aqueous reaction product mixture. The temperature and pressure of the carbon dioxide treated aqueous reaction product mixture is controlled to produce solid-state carbon material and an aqueous solu- tion rich in lithium salts. The solid-state carbon is separated from the aqueous solution rich in lithium salts. Carbon dioxide stream, precipitated lithium carbonate and an aqueous solution poor in lithium salts are generated by controlling the pressure and temperature of the aqueous solution rich in lithium salts. The precipitated lithium carbonate is separated from the aqueous solution poor in lithium salts. The method further comprises one or more of: recycling the recovered precipitated lithium carbonate as a feed source for the molten lithium carbonate salt electrolyte; and / or recycling the recovered aqueous solution poor in lithium salts as at least a portion of the aqueous source.
Owner:BERGEN CARBON SOLUTIONS AS

Method for preparing coal and calcined kaolin from coal gangue through step grinding, step selection, acid leaching and suspension calcination

The invention discloses a method for preparing coal and calcined kaolin through coal gangue grinding and grading-acid leaching-suspension calcination, and belongs to the technical field of coal gangue beneficiation. According to the method disclosed by the invention, the three stages of ore grinding flotation, acid leaching purification and fine grinding calcination complement each other, so that fine-grained calcined kaolin of which the content of-7 microns is greater than or equal to 90% and the whiteness is greater than or equal to 90% and ultrafine-grained calcined kaolin of which the content of-2 microns is greater than or equal to 90% and the whiteness is greater than or equal to 90% are prepared. According to the method, effective separation of coarse coal, leaching and purification of impurity iron elements and calcination and purification of fine-grained kaolin are realized through step grinding and step separation; the gas-solid reaction degree is improved and sintering is avoided by utilizing the dispersion and suspension characteristics of fine-particle materials; the dehydroxylation and decarburization reactions can be carried out completely by calcining fine materials and precisely controlling the temperature, so that the whiteness of the calcined kaolin product is remarkably improved. According to the method, the adaptability to coal gangue raw ore is improved, and meanwhile, a new thought is provided for efficiently preparing a calcined kaolin product from the coal gangue and cooperatively recycling coal resources.
Owner:NORTHEASTERN UNIV CHINA

Novel synthesis method of 4-formyl succinimidyl benzoate

The invention discloses a novel synthesis method of 4-formyl benzoic acid succinimido ester, which comprises the following steps: by taking p-formylbenzoic acid, NHS and EDAC as raw materials and dichloromethane as a solvent, adding a catalyst for reaction, and removing the solvent in vacuum to obtain a solid reaction product; and then the solid product is further subjected to the steps of dissolving, drying, vacuum solvent removal and the like to obtain a final product. By optimizing the synthesis conditions of the 4-formyl succinimidyl benzoate, the subsequent separation process is simplified, and the operation is simpler and more convenient; by adopting the catalyst, the yield is greatly improved and can reach 96% or above at most. The synthesis method disclosed by the invention is high in yield, mild in reaction condition and simple and convenient to operate, and can meet the requirements of large-scale industrial production.
Owner:SUZHOU WEIDU BIOTECH CO LTD

Preparation method of tert-dodecyl mercaptan

PendingCN119528779AIncrease conversion rate per passreduce spreadThiol preparationPtru catalystSolid acid
The invention belongs to the field of organic matter synthesis, and particularly discloses a preparation method of tert-dodecyl mercaptan, which is characterized in that hydrogen sulfide and dodecene are used as raw materials, and an addition reaction is performed under the catalytic action of a solid acid catalyst by adopting a liquid-solid heterogeneous process and a fixed bed reactor to obtain the tert-dodecyl mercaptan. The continuous liquid-solid reaction is realized, the diffusion time of hydrogen sulfide to a liquid phase main body is shortened, the heat capacity and the heat transfer coefficient of a reaction system are improved, the catalytic efficiency of the catalyst and the temperature controllability of the reaction process are improved, and the reactor design is simplified. Under proper operation conditions, the conversion per pass of dodecene is greater than or equal to 85%, the selectivity is close to 100%, the technological process is simple, few three wastes are generated, treatment is easy, and the method is suitable for industrial production.
Owner:DAQING ZHONGLAN PETROCHEMICAL CO LTD +1

Preparation method of phosphorus pentafluoride and lithium hexafluorophosphate

The invention relates to a preparation method of phosphorus pentafluoride, which comprises the following steps: mixing a fluorocarbon compound with a phosphorus oxide compound and an oxidizing agent, reacting in a dry closed environment at high temperature and high pressure, collecting gas, and purifying to obtain the phosphorus pentafluoride. The invention also discloses a preparation method of lithium hexafluorophosphate, which comprises the following step: carrying out gas-solid reaction on the obtained phosphorus pentafluoride and lithium fluoride in a fluidized bed to prepare the lithium hexafluorophosphate. The method solves the problems of low purity of lithium hexafluorophosphate, difficulty in treatment of byproducts, low production efficiency and the like in the prior art.
Owner:DUOFU DUOYANGFU NEW MATERIAL CO LTD

C-type particle fluidized bed reactor and C-type particle fluidized bed reaction system

The utility model relates to the technical field of gas-solid fluidized reactors, in particular to a C-type particle fluidized bed reactor and a C-type particle fluidized bed reaction system. The C-type particle fluidized bed reactor comprises a fluidized bed reactor body, a heating system and a pressure adjusting system, the heating system is arranged outside the fluidized bed reactor body, the pressure adjusting system comprises a pressure sensor, a vacuum pump and a pressure adjusting valve, and the pressure sensor is arranged at the top of the fluidized bed reactor body. And one end of the pressure regulating valve is connected with the air outlet of the fluidized bed reactor main body while the other end is connected with the vacuum pump. The C-type particle fluidized bed reactor can meet accurate pressure and temperature conditions and gas-solid fluidization reaction quality required by gas-solid reaction, realizes forced stirring of C-type particles in the reaction process and uniform gas-solid fluidization, and is simple in equipment structure, high in operation controllability and easy to carry out stable and fine chemical operation.
Owner:SUZHOU NEWMAT NANOTECHNOLOGY CO LTD

Magnesium metallurgy device and method through negative pressure atomization and supergravity enhanced liquid-solid reaction

The invention discloses a negative pressure atomization and supergravity enhanced liquid-solid reaction magnesium metallurgy device and method.The device comprises a furnace body, a liquid-solid mixing reaction material tank, a first-stage material gathering taper pipe and a second-stage material gathering taper pipe are fixedly arranged in the furnace body from top to bottom, and a solid raw material distributing plate is fixedly arranged in the liquid-solid mixing reaction material tank; powder feeding threads are formed in the solid raw material feeding pipe, the solid raw material feeding pipe is rotationally connected with the furnace body and connected with a transmission assembly, the solid raw material feeding pipe is rotationally connected with a neck of a hopper, and the neck of the hopper is connected with a solid raw material feeding vacuum valve; a liquid reducing agent sprayer fixedly connected with a liquid reducing agent feeding pipe is arranged in the liquid-solid mixing reaction material tank, and the liquid reducing agent feeding pipe is rotationally connected with the liquid-solid mixing reaction material tank and is connected with a liquid reducing agent feeding vacuum valve; the solid raw material feeding pipe and the liquid reducing agent feeding pipe are both provided with heating rings, the furnace body is connected with the magnesium steam collecting system connected with the vacuumizing system, the slag outlet capable of being sealed is formed in the bottom of the furnace body, energy consumption of magnesium metallurgy is reduced, and the reaction efficiency is improved.
Owner:XI AN JIAOTONG UNIV +1

Method and device for continuously producing sulfuryl fluoride

PendingCN120246930ASulfuryl fluorideChemical/physical processesPtru catalystSolid reaction
The invention relates to a method and a device for continuously producing sulfuryl fluoride. The method is a gas-solid reaction among reaction raw materials, does not need to use a solvent and a catalyst, is high in production efficiency, short in production period, high in sulfuryl fluoride yield and low in production cost, and can realize continuous production.
Owner:CATL-SICONG NOVEL MATERIALS CO LTD

Polymer, modified anion exchange membrane and preparation method and application thereof

The invention relates to the technical field of new materials, in particular to a polymer, an ion exchange membrane and a preparation method and application thereof. The polymer is a compound shown in a general formula I, r is; n is the content of non-quaternized piperidine in the main chain, and n is equal to 0-1; z = n / 2. The end-capping reagent is introduced by adopting a gas-solid reaction method, that is, the membrane reacts with the vaporized end-capping reagent. The method has a positioning effect on a polymer molecular chain, so that a static polymer chain and a dynamic end-capping reagent are in a positioning and fixed-point reaction when the end-capping reaction occurs, and self-crosslinking caused by high movement of the polymer chain is prevented. In addition, the space structure of a triazine network cross-linking site is regulated and controlled by optimizing an end-capping reagent, and the purpose of improving the stability and OH <-> conductivity of the thin film at the same time is achieved.
Owner:TSINGHUA UNIVERSITY

Gas-solid reaction rotary furnace

ActiveCN224499040UGas solidThermodynamics
The application relates to a gas-solid reaction rotary furnace. The gas-solid reaction rotary furnace comprises a support frame, a base, a frame rotatably connected to the base, a first driver for driving the frame to rotate, a rotary furnace pipe arranged in the frame, the rotary furnace pipe comprising a powder inlet and outlet end and a gas inlet and outlet end, and a gas assembly arranged at the gas inlet and outlet end of the rotary furnace pipe, wherein when the gas assembly supplies gas to the rotary furnace pipe, the rotary furnace pipe can be moved to a state where the gas inlet and outlet end is higher than the powder inlet and outlet end. During operation of the gas-solid reaction rotary furnace, the rotary furnace pipe is kept in an inclined rotating state, the loading capacity of the rotary furnace pipe is increased, the production capacity of a single furnace is increased, the energy consumption of unit weight of material is reduced, and the processing time and cost are reduced.
Owner:BERZELIUS (HEFEI) CO LTD +1

A method for preparing silicon dioxide nanopowder

The present invention relates to a method for preparing silicon monoxide nanopowder, and belongs to the technical field of non-metallic powder material preparation. The present invention uses SiO2 aerogel powder with a three-dimensional continuous structure surface as raw material, adsorbs hydrogen molecules on the surface of the powdered SiO2 aerogel, and axially feeds an argon-excited inductively coupled plasma torch. The hydrogen molecules are excited by the argon plasma torch to form a highly active hydrogen-rich plasma, which undergoes a reduction reaction with the SiO2 aerogel powder having the characteristics of high specific surface area and high porosity. The generated silicon monoxide vapor is quenched by argon downstream of the reaction device to obtain highly dispersible silicon monoxide nanopowder. This method overcomes the defects of the traditional solid-solid reaction method for preparing silicon monoxide, which has a slow reaction rate and low raw material conversion rate, and at the same time solves the safety problems existing in the traditional method of producing silicon monoxide by hydrogen reduction, thereby greatly improving production efficiency and safety.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS

Efficient gas-solid reaction process and integrated industrial system

PendingCN120885143ACarbon disulfideChemical/physical processesGas solidSolid reaction
The invention relates to an efficient gas-solid reaction process and an integrated industrial system, and belongs to the technical field of gas-solid reaction in chemical production. The process flow comprises the following steps: crushing and drying coke by a pulverizing unit, preheating the coke and sulfur steam to be greater than or equal to 550 DEG C, and jointly entering a gas-solid reaction unit; and the product enters a gas-solid separation unit, is subjected to two-stage gas-solid separation at a high temperature of 450-680 DEG C and a low temperature of less than or equal to 200 DEG C, and then is The integrated industrial system based on the efficient gas-solid reaction process is applied to carbon disulfide production through a coke method, the problems of external heat supply and byproduct generation control in the reaction process of coke and sulfur are solved, and the system is simple in process chain, easy and convenient to operate, compact in structure and suitable for continuous and closed carbon disulfide production requirements through the coke method.
Owner:BEIJING HANGHUA ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD

Lithium / carbon fluoride battery electrolyte and application thereof

The invention discloses a lithium / carbon fluoride battery electrolyte and application thereof. The lithium / carbon fluoride battery electrolyte comprises a lithium salt, an ester solvent and a ferrocene derivative. Ferrocene molecules are modified, and electron donating groups including amino, alkoxy, ester group and alkyl are introduced, so that the redox potential of ferrocene is reduced. The reduction potential is close to the potential of a carbon fluoride discharge platform, the purpose of accelerating carbon fluoride conversion is achieved, the solid-solid reaction of the battery is converted into the liquid-solid reaction, so that the polarization phenomenon is reduced, and heat generated when the carbon fluoride battery discharges is remarkably reduced. And meanwhile, the discharge capacity and the discharge rate capability of the battery are improved. Therefore, the battery has the characteristics of high energy density and high power, and is better in safety performance.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Material reactor, material reaction system, method for decomposing auto-oxidation reduction precursor and application

The invention discloses a material reactor, a material reaction system, a method for decomposing a self-oxidation reduction precursor and application. The material reactor comprises a dividing piece and a reaction cylinder, adjusting the rotation of the reaction cylinder; the reaction cylinder is provided with a reaction cavity along the length direction; the dividing piece is placed in the reaction cavity; the dividing piece is provided with at least three dividing plates; one ends of the plurality of sub-plates are connected and are distributed in a surrounding manner by taking the connected position as the center; the other ends of the partial split plates are in contact with the inner wall of the reaction cavity; the material reaction system comprises a rack, a heating device, a feeding device, a discharging device and a material reaction system, according to the scheme, multiple synergistic effects of preventing adhesion, improving heat transfer and accelerating gas-solid reaction can be realized, and the problem of waste caused by the fact that gas decomposed by raw materials does not participate in synthesis and is directly discharged in a production process is solved.
Owner:FOSHAN TAKASAGO IND KILNS CO LTD

Recovery method of neodymium iron boron waste

The invention relates to the technical field of rare earth secondary resource recovery, in particular to a neodymium iron boron waste recovery method. The method comprises the following steps: firstly, grinding the neodymium iron boron waste into fine granularity, and spraying into a specially designed flash reaction furnace body through a nozzle by virtue of carrier gas; meanwhile, sodium chlorate powder is continuously added into a pyrolysis area in the furnace, so that the sodium chlorate powder is instantly decomposed at a certain temperature, and high-activity gas is generated; the sprayed waste particles are in a suspended state in the reaction tower and are subjected to instantaneous gas-solid reaction with high-temperature active gas, rare earth elements are quickly oxidized and chlorinated and are converted into soluble rare earth oxychloride, and iron is mainly converted into FeO which is easy to magnetically separate. And carrying out cyclone dust collection and quenching on the reacted material to obtain a roasted product, recovering rare earth through water leaching, and recovering iron through magnetic separation. According to the invention, selective oxidation is completed at low temperature in a short time (second level), and the method has the outstanding advantages of high efficiency, low energy consumption and high recovery rate.
Owner:JIANGXI UNIV OF SCI & TECH

Method for reducing the content of sulfur in aluminum fluoride

The present application relates to a method for reducing the content of sulfur in aluminum fluoride, which comprises the following steps: uniformly mixing crude aluminum fluoride powder containing sulfate impurities with ammonium hydrogen fluoride powder to obtain a mixture; placing the mixture in a reactor and performing programmed temperature calcination under a protective atmosphere; discharging the sulfur and fluorine-containing volatile gas generated by calcination after treatment by an absorption system; cooling the calcined material to room temperature; washing the cooled material with water or blowing inert gas to remove residual ammonium salt or dust, and then drying to obtain a low-sulfur aluminum fluoride product. The in-situ HF generated by the decomposition of NH4HF2 is used for gas-solid reaction, which can effectively attack and convert stable sulfate impurities existing in various forms, has high desulfurization efficiency and is deep and thorough; the reaction conditions are mild, the main phase of the product is stable, the process flow is simple, and the energy consumption is low.
Owner:CHINA UNIV OF MINING & TECH

A gas purifier

The present invention discloses a gas purifier, which belongs to the technical field of gas purification equipment, and includes a first gas purification device and a second gas purification device arranged adjacent to each other, wherein the first gas purification device includes a purification tank for containing liquid alloy, a telescopic device arranged at the bottom of the purification tank, a pressing assembly installed at the output end of the telescopic device, an extrusion molding assembly and a material removal assembly installed at the top of the purification tank, a gas inlet is provided at the bottom of the purification tank, a gas outlet is provided at the top of the purification tank, the pressing assembly is slidably matched with the inner wall of the purification tank, the telescopic device drives the pressing assembly to move along the vertical direction, the pressing assembly presses the solid reaction material to the extrusion molding assembly, and then removes it through the material removal assembly, the pressing assembly pushes the liquid alloy when rising, and the liquid alloy enters the second gas purification device through the filter hole. The device of the present invention can process the generated solid reaction material in time.
Owner:JIANGSU ZHENGDA GAS CO LTD

Gas-solid reaction device

The utility model discloses a gas-solid reaction device, relates to the technical field of polycrystalline silicon production, and mainly aims to relieve the problem of blockage of solid raw materials of a gas-solid reactor. According to the main technical scheme, the gas-solid reaction device comprises a reaction chamber, a flow guide part and a cyclone separator, the lower end of the reaction chamber is connected to a gas feeding pipe, and the side wall of the reaction chamber is connected to a solid feeding pipe; the flow guide part comprises a plurality of flow guide beams and a plurality of layers of grating flow guide plates, the plurality of layers of grating flow guide plates are arranged in the reaction chamber along the vertical direction, and the plurality of flow guide beams are vertically arranged between the grating flow guide plates and the solid feeding pipe; the cyclone separator is arranged above the flow guide bundle, and an outlet pipe at the upper end of the cyclone separator penetrates through the top wall of the reaction chamber.
Owner:XINJIANG DAQO NEW ENERGY CO LTD

Flaky alumina and preparation method thereof

The invention discloses flaky alumina and a preparation method thereof, the flaky alumina is in a square sheet shape and has a single crystal structure, the grain size of the flaky alumina is 300-1300 nm, and the grain thickness is less than or equal to 150 nm. The preparation method comprises the following steps: placing roasted SB powder and a quaternary ammonium base solution in a pressure container in a solid-liquid two-phase separation manner, carrying out a gas-solid reaction under certain heat treatment conditions, and drying and roasting the reacted solid powder to obtain the flaky aluminum oxide. The flaky aluminum oxide is regular in structure and flat and smooth in surface, can be used as a polishing material, a coating, a catalysis material and an adsorption material, and is simple in preparation process, easy in raw material obtaining and easy in industrial production.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

A goaf spontaneous combustion active inerting device and method based on heat-triggered solid-liquid reaction

The application discloses a kind of based on heat trigger solid-liquid reaction's goaf spontaneous combustion initiative inerting device and method, belong to coal mine fire prevention technical field, first based on experimental data, goaf beam tube monitoring and numerical simulation determine goaf high temperature prevention area, under the influence of setting safety margin and considering the maximum thickness of residual coal determine the starting temperature of adaptive inerting device, then according to goaf residual coal thickness, porosity, oxygen concentration field and high temperature prevention area area calculate out initiative inerting device size and reagent filling amount, finally combine the effective coverage area of single device and honeycomb grid generation algorithm, design initiative inerting device dynamic pre-buried point, and pre-bury initiative inerting device in coal mining face, when device reaches the high temperature protection area of goaf deep, temperature sensing guide column paraffin melt, aluminum sulfate solution in liquid reagent storage tank flows into solid reaction bin and sodium bicarbonate reaction along guide column, generate a large amount of CO2 from exhaust port, rapidly reduce local oxygen concentration, eliminate goaf spontaneous combustion hazard.The core innovation of the application is to abandon the traditional passive prevention mode relying on gas diffusion, and instead adopt the initiative control mechanism of "temperature sensing trigger-in-situ reaction-directional release", so that CO2 directly acts on the high temperature area through the directional exhaust port, rapidly reduces the local oxygen concentration, cuts off the necessary condition of coal spontaneous combustion from the source, realizes the initiative identification and accurate inerting of goaf high temperature area, and ensures the safety production of coal mining face.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Thermochemical energy storage gas-solid reaction system cylindrical fixed bed reactor and testing method thereof

The invention provides a cylindrical fixed bed reactor of a thermochemical energy storage gas-solid reaction system and a testing method thereof, and belongs to the field of thermochemical energy storage. According to the invention, the heat storage and release cycle experiment can be carried out for different thermochemical gas-solid reaction systems, especially the heat storage and release process of a hydroxide system and a hydrated salt system. Openings at two ends of a reaction cavity are respectively connected with a top seal head and a bottom seal head, the top seal head is provided with an air inlet, the bottom seal head is provided with an air outlet, and stainless steel sintered plates are respectively arranged between the air inlet and the reaction cavity and between the air outlet and the reaction cavity; the heat exchange cavity is embedded in the periphery of the reaction cavity, a cooling water coil and a heating pipe are arranged in the heat exchange cavity, an inlet and an outlet of the cooling water coil are connected with a cooling water coil inlet and a cooling water coil outlet in the heat exchange cavity respectively, and positive and negative binding posts of the heating pipe extend out of the heat exchange cavity. According to the invention, heat storage and release performance research under various working conditions of variable temperature, variable pressure and variable flow can be carried out.
Owner:HARBIN INST OF TECH

Process and installation for catalytically converting plastic materials into pyrolytic oils

A process for converting plastic materials into pyrolytic oils, wherein: plastic materials are continuously fed into a preheating reactor to be mixed and preheated at a preheating temperature to obtain a pasty mixture; the pasty mixture is continuously transferred into a pyrolysis reactor to be heated at a pyrolysis temperature, under an anaerobic or inert atmosphere, to be converted into synthesis gases and a solid reaction product; the synthesis gases, containing condensable gases and uncondensable gases, are recovered on a first outlet located above the permeable bed, and the solid reaction product is recovered on a second outlet located below the permeable bed; the condensable gases of the synthesis gases are condensed into pyrolytic oils which are recovered.
Owner:VALOREGEN SAS

Circulating device for volatile liquid and non-volatile liquid or soluble solid solution

The utility model discloses a circulating device for volatile liquid and non-volatile liquid or soluble solid solution, and belongs to the technical field of chemical reaction equipment. The device comprises a gas collection container, a liquid-solid reaction operation container and a magnetic stirrer, a pressure release valve is arranged at the top of a container body, and a scale feeding pipe extending into the bottom of the container is arranged; the liquid-solid reaction operation container is a round flask, the lower part of the flask body is connected with a sample receiving pipeline, a reaction monitoring sample receiving switch is arranged on the pipeline, and the bottom of the flask body is also connected with a graduated shunt tube and is provided with a valve; the liquid-solid reaction operation container is placed on the magnetic stirrer, and the gas collection container and the liquid-solid reaction operation container are connected through a diaphragm pump pipeline and a reflux pipeline, so that gas of volatile liquid is pumped into the liquid-solid reaction bottle and enters the gas collection container again through the reflux pipeline under the action of pressure, and recycling of the liquid is realized. The continuous reaction is ensured. The overall design of the equipment is simple and easy to operate, and the equipment has good corrosion resistance and safety.
Owner:RES INST OF TEA YUNNAN ACAD OF AGRI SCI

Systems and methods for high reactant conversion through multiple reactant flow ratio staging

Reactor configurations may include one or more staged inlets and / or one or more staged outlets for gaseous and solid feedstocks. In one embodiment of the present disclosure, a reactor design for gas-solid reaction with one or more additional outlet for gas and / or solid phase is provided. In yet another embodiment, the design for a gas-solid reactor with one side inlet and two outlets for gas phase is described. In one embodiment, a reactor design with pairs of inlet and outlet for both gas and solid phase is provided. In another embodiment, a reactor design with one or more side inlets but only one outlet for gas phase is provided. In yet another embodiment, a reactor design with two inlets at the top / bottom of reactor and two side outlets for gaseous phase is described. In yet another embodiment, a reactor design with one or more side inlets and outlets for both gas and solid phases is provided.
Owner:OHIO STATE INNOVATION FOUND

Production process and equipment for producing phosphorus pentafluoride

The invention relates to the technical field of phosphorus chemical industry production, and particularly discloses a production process and equipment for producing phosphorus pentafluoride, the production process comprises five steps of material preparation, feeding, fluorination reaction, condensation reflux and collection, in the material preparation stage, anhydrous hydrogen fluoride is liquefied, and the liquefaction low temperature of the anhydrous hydrogen fluoride is maintained in the whole reaction; the technical problems that in the prior art, a gas-solid reaction is used in a process for producing phosphorus pentafluoride from anhydrous hydrogen fluoride and phosphorus pentachloride, and a fluorination reaction is a strong exothermic reaction, so that temperature control is strict in the production process, and potential safety hazards exist are solved.
Owner:GUIZHOU PHOSPHATE KAITAI TECHNOLOGY CO LTD

Method for preparing anhydrous magnesium chloride by dehydrating magnesium chloride hexahydrate

The invention belongs to the technical field of inorganic salt preparation, and discloses a method for preparing anhydrous magnesium chloride by dehydrating magnesium chloride hexahydrate, which comprises the following steps: by taking magnesium chloride hexahydrate as a raw material, carrying out preliminary dehydration to obtain low-water magnesium chloride, mixing the low-water magnesium chloride with fluid ammonia to carry out solid-liquid reaction, then carrying out solid-liquid separation and reduced pressure treatment to obtain a solid phase, and further performing high-temperature deamination to obtain anhydrous magnesium chloride. According to the method disclosed by the invention, solid-liquid reaction is directly carried out on the fluid ammonia and the low-water magnesium chloride, so that the use of a large amount of organic solvents and complicated operation steps in a traditional ammonia-gas-based alcohol ammonia method are avoided. Compared with a gas-solid reaction, the solid-liquid reaction has the advantages of being high in reaction speed, high in yield and the like, separation of ammonia and water can be achieved only through decompression treatment, and therefore recycling of ammonia is easy to achieve. Meanwhile, the method avoids corrosion of acid gas to equipment in a gas protection heating method taking hydrogen chloride as protective gas, and large-scale and rapid dehydration of magnesium chloride hexahydrate can be realized.
Owner:TIANJIN UNIV OF SCI & TECH

Spouted bed reactor and method for selective carbon deposition on the outer surface of micropowders

This invention discloses a spouted bed reactor and method for selective carbon deposition on the outer surface of micron-sized powders, belonging to the fields of gas-solid reaction engineering and chemical vapor deposition technology. The reactor includes a sealed reaction chamber, within which a gas distribution zone, a spouted circulation zone, a main reaction zone, and a top buffer zone are sequentially arranged. A porous distribution plate and a carrier gas inlet are provided at the bottom, and a central spouted gas inlet can be provided to form a particle circulation path with a central upward flow and peripheral recirculation. A reactive gas introduction structure is provided in the main reaction zone to introduce reactive gas in the middle of the particle circulation path. An internal filter assembly can be installed at the top of the chamber to achieve gas-solid separation. Through the partitioned introduction of carrier gas at the bottom and reactive gas in the middle, a spatially separated gas-solid contact structure is formed within the reaction chamber.
Owner:JINENG TECHNOLOGY (SHANXI) CO LTD

Catalyst components for the polymerization of olefins and catalysts therefrom obtained

PCT designated stageWO2025247792A1Polymer sciencePtru catalyst
A catalyst component for the polymerization of olefins obtained by a process comprising: (a) reacting in an inert hydrocarbon suspension medium a Mg(OR1)(OR2) compound, in which R1 and R2 are identical or different and are each an alkyl radical having 1 to 10 carbon atoms, with a tetravalent transition metal compound having at least a Metal-halogen bond, used in amounts such that the molar ratio metal / Mg is from 0.05 to 5, thereby obtaining a solid reaction product dispersed in a hydrocarbon slurry and (b) contacting the product obtained in (a) with ethylaluminum dichloride.
Owner:BASELL POLYOLEFINE GMBH

Powdered activated coke performance evaluation device

The present invention provides a device for evaluating the performance of powdered activated coke. The device includes a gas distribution system, a gas heating system, a feeding system, an entrained bed reaction system and a gas-solid separation system; the gas distribution system is used to configure simulated gas involved in the coking, desulfurization, denitrification, analytical regeneration or sulfur production process of powdered activated coke; the gas heating system is connected to the gas distribution system and is used to heat the simulated gas; the feeding system is used to provide solid reactants involved in the coking, desulfurization, denitrification, analytical regeneration or sulfur production process of powdered activated coke; the entrained bed reaction system is connected to the outlet of the gas heating system and the outlet of the feeding system; the gas-solid separation system is connected to the outlet of the entrained bed reaction system. The above-mentioned device provided by the present invention can be used to dynamically and comprehensively evaluate the relevant properties of powdered activated coke, providing a systematic and mature process for the performance evaluation of powdered activated coke.
Owner:CHINA ENERGY INVESTMENT CORP LTD +2

Supergravity reactor with novel spiral lifter and application

The invention discloses a supergravity reactor with a novel spiral lifter and application. The supergravity reactor comprises a shell, a feed port, a rotor, a filler layer, a discharge port, a discharge port and the spiral lifter, the feeding holes comprise a first feeding hole and a second feeding hole, the first feeding hole is formed in the side wall of the upper part of the shell, and the second feeding hole is formed in the top of the shell; the spiral lifter comprises a lifting cavity, a spiral piece, a flange, a supporting column and an impeller. The spiral lifter can lift liquid or solid-liquid reactants in the supergravity reactor into the filler area for dispersion, so that the effective mass transfer area is increased, and the mass transfer rate is increased. The device is wide in applicability, can be used for gas-liquid or gas-liquid-solid reaction, and can remarkably enhance mass transfer, improve reaction efficiency, reduce equipment investment and operation cost and improve safety of the device.
Owner:BEIJING UNIV OF CHEM TECH +1