28 results about "Solid reaction" patented technology

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.

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.

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.

The application discloses a kind of broken agent online recovery unit and the reaction rectifying tower of the unit of application unit, broken agent online recovery unit is suitable for gas-liquid-solid reaction in reaction rectifying tower, including: broken material receiving tray, it is located above liquid level and is set in the inner wall of reaction rectifying tower;Circulation guide rail, starting point is located above broken material receiving tray and extends along the inner wall of tower, middle section of guide rail is below liquid level, and guide rail end point is the same as starting point to form closed loop;Basket, it moves along circulation guide rail and collects broken catalyst and / or filler solid particles in liquid phase by the double-aperture screen structure arranged in basket, and basket after broken material collection returns to guide rail end point above liquid level along circulation guide rail and unloads broken material to broken material receiving tray.The application can recover broken solid particles on line and supplement equivalent fresh catalyst or filler particles on line, avoid affecting gas-liquid mass transfer efficiency and reaction rate in tower.

The application discloses a thermogravimetric analysis device and method for high-humidity multi-component atmosphere reaction kinetics research, and belongs to the technical field of thermogravimetric analysis instruments.The device comprises a reaction module, a heating furnace, a weighing module, a gas distribution module and an analysis module; the reaction module is vertically arranged in the heating furnace, and the core is a reaction tube main body which is open at the lower part; the side surface is connected with a gas inlet pipe and a sampling pipe from top to bottom; the weighing module is located below the reaction module and comprises a weighing balance, a water cooling unit and a weighing support rod; the water cooling unit can control the water vapor condensation area and stabilize the balance temperature; the gas distribution module can provide a multi-component reaction atmosphere containing controllable concentration water vapor; and the analysis module can detect the tail gas composition in real time.The application can realize low gas-solid mass transfer resistance, stable control of a high-humidity environment, wide particle size sample measurement and rapid temperature rise and fall, and is suitable for high-humidity multi-component atmosphere gas-solid reaction kinetics research in the fields of combustion, catalysis, adsorption and the like.

The application discloses a kind of based on gas-solid reaction strengthening SF6 waste gas degradation device and method.The device includes plasma generator, gas-solid separation reactor, tail gas treatment device and gas distribution system;Gas distribution system is connected with plasma generator, SF6 and auxiliary gas are gas distribution, mixed ionization is carried out to obtain plasma torch, powder bin is provided at the plasma inlet of gas-solid separation reactor, powder-like porous active solid material is contacted with plasma torch and heated, and powder-like solid reactant and non-basic tail gas are generated, gas-solid separation bin carries out gas-solid separation to tail gas and solid reactant after reaction, and separated non-basic tail gas is subjected to secondary reaction to realize harmless treatment.The application solves the technical problem that the related art does not have high flow for SF6 degradation, and realizes convenient, efficient, reliable and low-cost degradation treatment of SF6 waste gas.

The application relates to a rare earth iron-carbon-based hot-deformation magnet and a preparation method thereof, and belongs to the technical field of permanent magnet materials. The magnet is prepared through a rapid quenching-heat pressing-hot deformation-annealing heat treatment process. The rare earth iron-carbon-based hot-deformation magnet prepared by adopting the process is composed of RE2(Fe,M) 14 (C,B) main phase and RE6Fe 13 Ga phase, rare earth-rich phase, contains a small amount of RE2Fe 17 C x , alpha-Fe, rare earth oxides and rare earth carbides. The magnet design optimizes the grain boundary phase by introducing Ga, accurately matches the hot deformation temperature and the main phase solid-state reaction temperature through process control, and successfully realizes high comprehensive magnetic properties without adding heavy rare earth elements.

The application discloses high-purity anhydrous scandium fluoride and a preparation method thereof, and belongs to the field of rare earth fluoride preparation. The preparation method comprises the following steps: mixing scandium oxide and zinc fluoride by a mechanical activation treatment method to obtain mixed raw materials, using mechanical activation to induce crystal lattice defects, significantly improving the kinetic conditions of the solid-solid reaction process of scandium oxide and zinc fluoride, and making fluorination more sufficient; roasting the mixed raw materials under an inert atmosphere to obtain roasted materials; putting the roasted materials into a mixed leaching system containing ammonia and ammonium salt for selective leaching, and then filtering and separating to obtain a solid crude product; using an ammonia-ammonium salt complex system, using the high stability of Zn(NH3)4] 2+ complex ions to realize accurate separation of by-products Zn and main products ScF3; and washing and drying the solid crude product to obtain anhydrous scandium fluoride, with a content of 400 ppm or less and a fluorination rate of 99.99%.

This invention provides a method for improving the reaction rate of nickel carbonyl synthesis, belonging to the field of carbonyl metallurgical technology. It solves the problems of low gas-solid reaction efficiency and dust blockage in existing nickel carbonyl synthesis reactions. This invention purifies CO, controlling the N2 content in the CO gas participating in the nickel carbonyl synthesis reaction to below 0.3%. The CO not participating in the carbonyl synthesis reaction and the CO obtained from the decomposition reaction of nickel carbonyl are pressurized and enter an adsorption tower for adsorption, pressure equalization, displacement, reverse release, and evacuation. Then, a vacuum pump extracts the adsorbed CO from the copper-loaded adsorbent to a CO gas holder for storage. A gas switching device is installed at the CO inlet of the synthesis reactor, ensuring that CO gas always enters from the bottom of the reactor and slowly passes through the material layer from bottom to top. This invention improves the reaction rate of nickel carbonyl synthesis by controlling the N2 content in the CO gas during the nickel carbonyl synthesis reaction and optimizing the solution to the problems of low gas-solid reaction efficiency and dust blockage.

The application provides an automatic control high-temperature-resistant micro reaction pool stirring device, which is used for stirring control of materials in a micro cylindrical reaction pool in a high-temperature furnace chamber of a rapid screening calorimeter of a standard test equipment, and is characterized by comprising a magnetic driving unit, a reaction pool unit and a magnetic adsorption base. The application can effectively eliminate the temperature gradient negative effect from the wall surface and the interface of the materials in the heterogeneous reaction system calorimetric process, and is suitable for a heterogeneous liquid-liquid and liquid-solid reaction system. The application can realize intermittent and semi-intermittent synthesis reaction calorimetry, meet the test requirements of the stirring of the synthesis process sample at high temperature, and expand the application of the rapid screening calorimeter equipment. The electromagnetic stirring device is started by adjusting the rotating magnet connected with the PLC, the motor speed is adjusted by using the computer and the speed knob, the magnetic force of the rotating magnet is controlled, and the stirring sub in the micro reaction pool is driven to rotate.

The application discloses a method for preparing sodium ion water through normal-temperature solid-phase circulation reaction and a closed-loop circulation system, and belongs to the technical field of sodium ion water solution preparation. The method uses metal calcium powder and sodium fluoride powder as main raw materials, mixes them in proportion, slightly humidifies, and then high-pressure presses into a square block, and then performs aging reaction under normal-temperature ventilation conditions; after aging is completed, the square block is crushed and broken, and then is put into water for leaching to obtain a sodium ion-containing water solution; fluorine ion detection is performed on the leaching solution, if fluorine is contained, calcium fluoride precipitate is generated by in-situ reaction through adding metal calcium powder, and then pure sodium ion water is obtained after filtration; the wet filter residue generated in the filtration is not subjected to drying treatment, and new sodium fluoride dry powder and metal calcium dry powder are directly supplemented in proportion, and then are mixed, pressed into a block, aged, and leached again, so that the raw materials are used in a closed-loop circulation mode for unlimited times. The application is safe and stable in the whole process under normal temperature and normal pressure, does not generate waste materials and does not emit pollutants, can continuously prepare sodium ion water in a low cost and large batch, solves the problems of low conversion rate, raw material waste and complex process in traditional solid-solid reaction, and is suitable for large-scale, environmentally-friendly and safe production of sodium ion water solution.

This invention discloses a method for regenerating solid electrolytes, belonging to the field of solid electrolyte technology. The method includes the following steps: S1: Cleaning and drying the surface of the short-circuited solid electrolyte to obtain a cleaned solid electrolyte; placing the cleaned solid electrolyte in a sealed container containing iodine, ensuring that the cleaned solid electrolyte and iodine do not come into contact, and then carrying out a gas-solid reaction in the sealed container; after the reaction is complete, a treated solid electrolyte is obtained; S2: Polishing the surface of the treated solid electrolyte to obtain a regenerated solid electrolyte. In this invention, iodine vapor is used to treat the short-circuited solid electrolyte. The iodine vapor reacts with Li dendrites and lithium carbonate in the short-circuited solid electrolyte to generate LiI, eliminating the lithium dendrites and lithium carbonate inside the short-circuited solid electrolyte, restoring the electrochemical performance of the solid electrolyte, and realizing the regeneration of the solid electrolyte.

A catalyst can include a solid reaction product of: a non-halide containing organic compound (A) having an element from Groups la, Ila, lIb, Illb, IVb, VIla, and VIII; a non-halide containing transition metal compound (B) having a transition metal from Groups IVa, Va, and Via; and an organo-aluminum halide represented by AlR(R') n, where R represents a C1-C20 hydrocarbon radical, R' represents a halide, and n represents 0 ≤ n ≤ 2. The disclosure also relates to methods of preparing the catalyst.

In a carbon dioxide separation and recovery method that uses amine compounds for carbon dioxide absorption and recovery, the energy required for regenerating the CO2 absorption / release agent is reduced, and the process between the absorption and recovery steps is simplified. [Solution] A method for separating and recovering carbon dioxide, comprising: (A1) absorbing carbon dioxide into an amine compound polar solution containing an amine compound and a polar solvent to precipitate a solid reaction product of the amine compound and carbon dioxide in the amine compound polar solution, thereby obtaining a polar reaction product which is a polar suspension or slurry obtained therefrom; (B1) treating the polar reaction product obtained in step (A1) with a nonpolar solvent to remove the polar solvent, thereby obtaining a nonpolar reaction product which is a nonpolar suspension or slurry obtained therefrom containing the solid reaction product and the nonpolar solvent; (C1) heating the nonpolar reaction product obtained in step (B1) under pressure, atmospheric pressure or reduced pressure to separate and recover carbon dioxide and regenerate the amine compound from the nonpolar reaction product, thereby obtaining an amine compound nonpolar solution; and (D1) treating the amine compound nonpolar solution obtained in step (C1) with a polar solvent to replace the solvent and obtain an amine compound polar solution.

The utility model discloses a fluorination furnace convenient to loading relates to fluorination reaction technical field, including furnace body and feed inlet, the feed inlet is located one end at the top of furnace body, is equipped with the conveying cylinder on the furnace body, the conveying cylinder top is equipped with first motor, first motor output is equipped with spiral conveying rod, spiral conveying rod rotatory connection is in the conveying cylinder inside, the conveying cylinder lower part one end is equipped with the feed frame, the conveying cylinder upper part one end is equipped with the discharge frame, and the discharge frame is located above the feed inlet. The utility model adds solid reactant in the conveying cylinder inside, then rotates spiral conveying rod, reaches the effect convenient for adding solid reactant to the inside of furnace body, can more accurately control the adding time and rate of reactant, to maximum limit improves the reaction efficiency and selectivity, not only can simplify the operation process, reduces the operation difficulty, can improve work efficiency.

This invention relates to a method for degrading PET fibers using a mechanical enzymatic method and recycling the degradation products, comprising: (1) extracting crude enzyme solution using screened PET-degrading strains. When the bacteria are in the late logarithmic growth phase, the supernatant of the culture medium is collected by centrifugation, and then placed in a freeze dryer to remove water from the crude enzyme solution, thereby obtaining the desired enzyme powder. (2) accurately weighing a certain amount of PET and placing it in a homogenizer, adding a certain amount of enzyme powder and sodium phosphate buffer with added green surfactant, performing preliminary mechanical treatment using a homogenizer, and then incubating the treated mixture at a constant temperature. (3) reacting the degradation products in the solid reaction mixture with sodium carbonate solution, filtering through cotton, and then acidifying with hydrochloric acid to precipitate substances such as terephthalic acid. Finally, centrifuging is used to remove the acidic supernatant to separate the degradation products such as terephthalic acid. This process avoids the use of large amounts of solvent, reduces costs and environmental impact, realizes the direct enzymatic hydrolysis of highly crystalline PET fibers, and simultaneously achieves high-purity recovery of degradation products, which can be recycled for the production of new PET products.

This invention discloses a reactive distillation column suitable for gas-liquid-solid reactions involving counter-current gas-liquid contact. It comprises: a sieve plate fixed to the inner wall of the column, allowing rising gas phase to pass through; a basket located above the sieve plate, supporting horizontally staggered packing and catalyst; a descending unit located above the basket, providing descending liquid phase; and an impeller located in the space between the sieve plate and the basket, generating a centrifugal swirling effect when the gas and liquid phases counter-currently contact within the packing and catalyst. This invention effectively improves mass transfer reaction efficiency through the centrifugal swirling effect.

A catalyst can include a solid reaction product of: a non-halide containing organic compound (A) having an element from Groups Ia, IIa, IIb, IIIb, IVb, VIIa, and VIII; a non-halide containing transition metal compound (B) having a transition metal from Groups IVa, Va, and Via; and an organo-aluminum halide represented by AlR(R′)n, where R represents a C1-C20 hydrocarbon radical, R′ represents a halide, and n represents 0≤n≤2. The disclosure also relates to methods of preparing the catalyst.

This invention provides a method for preparing porous graphite, comprising the following steps: S1. Preparing CaC... 2 The powder is placed in a reaction vessel, and CO gas is introduced into the vessel. A gas-solid reaction is carried out at 800~1400 °C. After the reaction is completed, the mixture is cooled to room temperature to obtain a solid product. S2. The solid product is washed and dried to obtain porous graphite. The reaction temperature of this invention is much lower than that of traditional processes, and it can be combined with the process for preparing CaC2, eliminating CO emission problems and utilizing the waste heat of the reaction, which is beneficial to the comprehensive utilization of energy consumption.

This invention discloses a three-phase disturbance unit and a reactive distillation column using this unit. The three-phase disturbance unit is suitable for gas-liquid-solid reactions in which solid catalysts and / or packing particles are suspended in the liquid phase. It includes: a gas-phase nozzle, fixed to the tray of the reactive distillation column via a gas guide pipe and communicating with the lower gas phase space; the gas-phase nozzle is disposed in the liquid phase and has a first open surface; a cap, fitted over the gas-phase nozzle and having a second open surface; under the pressure of the rising gas, the pores of the second and first open surfaces become interconnected, forming a jet disturbance of gas towards the liquid phase and solid particles; and a magnetic control device, which intermittently controls the pores of the second and first open surfaces to shut off via an electromagnet, forming an adsorption of solid particles by the cap. This invention, through the controllable gas-phase nozzle of the three-phase disturbance unit, can provide sufficient disturbance within the column, effectively improving mass transfer efficiency and reaction rate. In the event of screen blockage leading to flooding, it can also rapidly reduce the liquid level on the corresponding tray.

The utility model relates to battery technology field especially relates to a negative pole piece combustion supporting device. It includes casing and atomization subassembly, the casing is equipped with reaction cavity, and the negative pole piece is in the self -ignition reaction in reaction cavity, the atomization subassembly passes through the water mist that is led to the reaction cavity to control the humidity in the reaction cavity reaches the self -ignition humidity of negative pole piece, the atomization subassembly includes ultrasonic atomizer, and the water mist export of ultrasonic atomizer is communicated with the mist exhaust structure, and the mist exhaust structure's export is arranged in the reaction cavity. In this application, the negative pole piece is made to burn through the mode that the reaction cavity humidity reaches the self -ignition humidity of negative pole piece, compared with the mode that the negative pole piece is directly contacted with water, the micron level gas-solid reaction interface is formed on the negative pole piece by water mist, and the reaction trigger is uniform, and the reaction intensity degree reduces, and the instantaneous hydrogen release concentration reduces, and the combustion safety is improved.

The application relates to the aerosol generating technical field, and provides an aerosol substrate structure which comprises a substrate section and a heating structure. The substrate section has an aerosol substrate therein, and the aerosol substrate is used for generating an aerosol after being heated. The heating structure comprises a shell and a partition layer, and the partition layer is arranged in the shell to divide the internal space of the shell into a first accommodating cavity and a second accommodating cavity which are independent of each other. The first accommodating cavity is provided with a first solid-state reactant, and the second accommodating cavity is provided with a second solid-state reactant. The first solid-state reactant is used for generating an exothermic reaction with the second solid-state reactant after the partition layer is damaged, and the heat generated by the exothermic reaction is used for heating the aerosol substrate. The heating structure is arranged in the aerosol substrate structure, and the heat generated by the exothermic reaction in the heating structure is used for heating the aerosol substrate. Therefore, an aerosol generating device does not need to be additionally carried, and the use experience of a user is improved.

This invention discloses a catalyst replacement and feeding unit and a reactive distillation column using this unit. The catalyst replacement and feeding unit includes: a catalyst downcomer, which is disposed between the current tray and the lower mass transfer reaction space in the reactive distillation column. The catalyst downcomer is equipped with a removable discharge chamber, which is used to retain solid particles of the catalyst and allow the liquid phase to enter the lower mass transfer reaction space through the catalyst downcomer when the catalyst on the current tray needs to be replaced; and a downcomer, which is disposed at a corresponding position of the catalyst downcomer. The downcomer is equipped with a loading port. When the current catalyst downcomer is closed, the loading port of the upper downcomer is used to load fresh catalyst. The fresh catalyst is carried by the upper liquid phase and enters the current mass transfer reaction space through the downcomer. This invention enables online replacement of the catalyst during the gas-liquid-solid reaction process through the catalyst replacement unit, which is convenient and efficient.

The application discloses an online agent replacement unit and a reaction rectifying tower, and relates to the field of reaction rectifying tower, and aims at collecting invalid solid catalyst and / or filler particles suspended in liquid phase in the reaction rectifying tower. The online agent replacement unit comprises a receiving tray which is arranged on the inner wall of the reaction rectifying tower and is located above the liquid surface; a rotating mechanism which is arranged on one side of the inner wall of the tower and corresponds to the position of the receiving tray; the rotating mechanism is controlled to rotate by a driving unit outside the tower; a plurality of fixed pin shafts are uniformly and spacedly arranged at the outer periphery of the rotating mechanism; the highest point of the rotating mechanism is higher than the arranged position of the receiving tray, and the lowest point is located below the liquid surface and close to the tray plate; the number of collecting baskets is equal to that of the pin shafts, and the collecting baskets are hung on the pin shafts; the collecting baskets collect the solid particles suspended in the liquid phase when the rotating mechanism rotates to below the liquid surface, and dump the solid particles to the receiving tray at the highest point. The application is suitable for gas-liquid-solid reaction, and can recycle the invalid catalyst and / or filler particles on line.

Provided is a method for separating / collecting carbon dioxide in which an amine compound is used to absorb and collect carbon dioxide. The method reduces the energy for regenerating a CO2-absorbing / releasing agent and simplifies processes between an absorption step and a collection step. The method for separating / collecting carbon dioxide comprises: a step (A1) in which an amine-compound polar solution comprising an amine compound and a polar solvent is caused to absorb carbon dioxide and a solid product of reaction between the amine compound and the carbon dioxide is thereby precipitated in the amine-compound polar solution to obtain a polar reaction product which is either a polar suspension or a slurry obtained therefrom; a step (B1) in which the polar reaction product obtained in the step (A1) is treated with a non-polar solvent and the polar solvent is removed, thereby obtaining a non-polar reaction product which is either a non-polar suspension comprising the solid reaction product and the non-polar solvent or a slurry obtained therefrom; a step (C1) in which the non-polar reaction product obtained in the step (B1) is heated at an elevated, ordinary, or reduced pressure to separate and collect the carbon dioxide and regenerate the amine compound from the non-polar reaction product, thereby obtaining an amine-compound non-polar solution; and a step (D1) in which the amine-compound non-polar solution obtained in the step (C1) is treated with a polar solvent to conduct solvent displacement, thereby obtaining an amine-compound polar solution.

This invention belongs to the field of perovskite technology. This invention provides a perovskite film, its preparation method, and a perovskite device. The preparation method involves vapor-depositing an inorganic salt raw material to form an inorganic salt layer, which is then placed in a thermal field within an organic atmosphere. This thermal field performs three-dimensional isotropic heating to obtain the perovskite film. By using a gas-solid reaction, the disadvantages of using solvents are avoided. Furthermore, the all-around uniform heating thermal field allows the organic and inorganic components to release thermal stress while reacting to form perovskite, promoting stress balance between the perovskite lattice and effectively releasing residual strain. Simultaneously, the pre-crystallized organic salt layer facilitates the deposition of templated organic components to guide the perovskite growth in a (100) orientation, further effectively reducing structural defects and promoting film uniformity. Therefore, the photoelectric conversion efficiency and stability of devices containing this perovskite film are significantly improved.

This invention provides a gold / gold palladium supported zinc-magnesium solid solution catalyst, its preparation method, and its application in photocatalytic methane conversion to C2 hydrocarbons. It relates to the field of photocatalytic methane conversion technology. The catalyst preparation steps are simple and time-saving. Deionized water is mostly used as a solvent in the preparation process, resulting in less pollution. The equipment requirements are not high, and the reaction conditions are easy to achieve. The photocatalytic methane reaction is a gas-solid reaction with mild conditions, and the products are easily separated from the catalyst after the reaction.