184results about "Liquid-gas reaction processes" patented technology

The invention belongs to the technical field of chemical production, and particularly relates to extraction equipment and method for hydrogen peroxide production, the extraction equipment comprises an extraction container, inverted motors are symmetrically arranged on the two sides of the outer surface of the extraction container through sleeve shells, and the outer surfaces of the inverted motors are fixedly connected with side suspension frames; the extraction container comprises a containing cylinder; the torsion base is arranged at the bottom of the inner wall of the accommodating cylinder; the stirring component is arranged at the axis of the top of the torsion base. According to the device, the torsion base at the bottom of the containing cylinder can be improved to replace an electromagnetic stirrer to stir a solution from inside to outside, the rotating chassis and the packaging shell synchronously rotate, so that the packaging shell cannot abrade the rotating chassis during rotation, the side edge of the rotating chassis can be separated from the inner wall of the containing cylinder, and the rotating chassis is prevented from being abraded during rotation. Therefore, even if the rotating chassis is abraded with the inner wall of the accommodating cylinder, the separated impurities cannot enter the solution at the upper part, so that the problem that the solution is polluted is solved.

The invention discloses a gas-liquid atomization rotational flow mixing reaction device which comprises a mounting bracket, the mixing reaction chamber is detachably mounted on the mounting bracket through a bolt; the communicating chamber is detachably mounted at the top of the mixing reaction chamber through a bolt; the gas-liquid separation chamber is detachably mounted at the top of the communicating chamber through a bolt; the atomizing nozzle is fixedly connected to the mixing reaction chamber; the driving unit and the indicating unit are installed on the pressure regulating unit, and one end of the gas feeding pipe is fixedly connected to the atomizing nozzle. By adopting a gas-liquid atomization and rotational flow self-stirring structure, the problems that traditional mechanical stirring is slow in mixing, poor in uniformity and unbalanced in local proportion are fundamentally solved, the phenomena of back mixing and short circuit are eliminated, the reaction is more sufficient, crystallization is more uniform, the yield is higher, meanwhile, a stirring mechanism is omitted, the device is simplified, energy consumption is reduced, parameters such as pH and temperature are fed back more timely, and the production efficiency is improved. And the control precision is greatly improved.

The invention belongs to the technical field of comprehensive utilization of seawater resources, and particularly relates to a green circulation method and system integrating seawater desalination and high-efficiency bromine extraction of concentrated seawater, and the system comprises a seawater desalination unit, a pretreatment unit, an oxidation replacement unit, a bromine elementary substance blowing-out unit, a bromine elementary substance absorption and enrichment unit and a bromine rectification and purification unit which are sequentially connected in series, the pipelines of the units are communicated to form a continuous material channel; the seawater desalination unit is used for producing fresh water and enriching concentrated seawater; the pretreatment unit removes impurities through a security filter and adjusts pH through an acidification pool; the oxidation replacement unit mixes chlorine and concentrated seawater through a gas-liquid mixer, and a bromine solution is generated in a reaction tank; the stripping tower realizes bromine gas stripping through atomization spraying, a filler area and a gas distributor; the absorption tower enriches bromine into hydrobromic acid by using a sulfur dioxide aqueous solution; the rectification unit is oxidized by a distillation tower, condensed and separated to obtain liquid bromine. The method realizes synchronous recovery of fresh water and bromine resources, conforms to a green circulation concept, and has remarkable economic and ecological benefits.

The utility model belongs to the technical field of chemical solvent preparation, and particularly relates to a tetrahydrofuran purification device. The utility model provides a tetrahydrofuran purification device. The tetrahydrofuran purification device comprises a feed port, a catalytic hydrogenation reaction part, a gas phase discharge port, a liquid phase discharge port, a heavy component removal tower and an absorption tower. In the application, through the catalytic hydrogenation part, the impurity dihydrofuran in the tetrahydrofuran is hydrogenated to generate the tetrahydrofuran, the impurities n-butyraldehyde and isobutyraldehyde are hydrogenated to generate alcohols which are easily separated from the tetrahydrofuran, through determination, the content of the impurity dihydrofuran in the purified tetrahydrofuran is reduced to 3 ppm or below, the alcohols are separated in the heavy component removal tower, and the content of the tetrahydrofuran in the tetrahydrofuran is reduced to 3 ppm or below. The purity and the quality of tetrahydrofuran are effectively improved, and the purification device structure and the purification process are simple.

To provide a gas-liquid contact device which is advantageous for improving gas-liquid contact efficiency.SOLUTION: A gas-liquid contact device 1 comprises a gas liquid contact unit 2 which has a plurality of areas which are in communication with each other in a horizontal direction and each of which has a filler 22 installed therein. The filler 22 includes first filling members 50 and second filling members 51 which are shaped in plates parallel to a direction of supply of liquid L to the fillers 22 and a direction of supply of a gas G, and which are laid on top of each other. The first filling members 50 and the second filling members 51 are at least partially waved plates, where a waviness direction of the wave plates of the first filling member 50 and a waviness direction of the wave plates of the second filling member 51 are inclined in opposite directions to each other with respect to a vertical direction.SELECTED DRAWING: Figure 3

The utility model belongs to the technical field of tail gas treatment, and particularly relates to a multi-stage tail gas purifier which comprises a closed shell, a mandrel, a reaction chamber, a tail gas flow channel structure and a liquid flow channel structure. The plurality of reaction chambers are arranged in the closed shell along the axis direction of the mandrel, and a rotor is arranged in each reaction chamber; the liquid flow channel structure enables the reaction liquid to enter the rotor and be thrown out to the reaction chamber after being accelerated by the rotor; and the tail gas flow channel structure and the liquid flow channel structure enable the tail gas flow direction and the liquid flow direction in each reaction chamber to react in the reaction chamber in opposite directions. According to the utility model, the tail gas flow direction and the liquid flow direction in each reaction chamber are opposite, namely the tail gas flows clockwise, the liquid flows anticlockwise or the tail gas flows anticlockwise and the liquid flows clockwise, so that the liquid and the tail gas thrown out at a high speed can violently collide and react in the reaction chamber, and the reaction efficiency can be improved; and the tail gas is purified more thoroughly.

The application discloses a mass transfer enhanced gas-liquid reactor, which is characterized in that a feeding inlet and a tail gas outlet are arranged on a reactor shell, and a discharging outlet is arranged at the bottom; a stirring device comprises at least one group of stirring paddles arranged in the reactor shell; a gas distribution device is fixedly connected in the reactor shell and comprises an outer cover with an upper opening and a lower opening and a gas distributor sleeved in the outer cover, a gas-liquid passage with an annular cross section is formed between the outer cover and the gas distributor, a longitudinal section of the gas-liquid passage is S-shaped, a gas distribution hole is arranged on the side, and a gas inlet pipe is communicated with the gas distribution hole. The mass transfer enhanced gas-liquid reactor has the advantages of promoting the dissolution and transmission of gas, greatly improving the gas atom economy, saving energy, uniform stirring, complete fermentation, fast reaction speed and the like.

The invention belongs to the field of hydrogen production by methane, and provides a reaction device and method for producing hydrogen by pyrolyzing methane by using an ultrasonic synergistic reinforced molten medium, and the reaction device comprises a reaction device cylinder, a thermal insulation layer, a flat cover, an ultrasonic vibration mechanism, a carbon material scraping mechanism and a water-cooling heat dissipation mechanism; a heat preservation layer is arranged on the outer side of the reaction device barrel, an ultrasonic vibration mechanism and a carbon material scraping mechanism are arranged in the reaction device barrel, a water-cooling heat dissipation mechanism is arranged on the outer side of the heat preservation layer, and a flat cover is arranged at the top of the reaction device barrel. The problems that under a traditional high-temperature molten state system, local turbulence fluctuation is caused by large-size vortex capture and trailing vortex entrainment, methane bubble coalescence is caused, the bubble size is too large, and bubble distribution in a drainage basin is uneven are solved, and the gas-liquid mass transfer efficiency and the methane conversion efficiency are effectively improved; and the problem that the manufacturing cost of the device is increased by increasing the height of the reactor for increasing the bubble retention time is solved.

The invention discloses a vertical gas-liquid two-phase fluid uniform distribution device and a uniform distribution method thereof, and relates to the technical field of chemical separation equipment. The device comprises a device shell, a cyclone flow guide mechanism, a multi-stage reducing flow guide mechanism and an umbrella-shaped reflecting and converging mechanism, the cyclone flow guide mechanism, the multi-stage reducing flow guide mechanism and the umbrella-shaped reflecting and converging mechanism are sequentially fixed in the device shell from top to bottom, and the multi-stage reducing flow guide mechanism comprises a first-stage distribution plate, a second-stage distribution plate and a third-stage distribution plate; first-stage distribution holes are uniformly distributed in the first-stage distribution plate, second-stage distribution holes are uniformly distributed in the second-stage distribution plate, third-stage distribution holes are uniformly distributed in the third-stage distribution plate, a mounting groove is formed in the bottom of each third-stage distribution hole, and a valve element assembly is fixed in each mounting groove. Through the multi-stage synergistic effect, the technical problems that an existing distributor is insufficient in radial mixing, poor in operation elasticity, prone to blockage, serious in wall flow phenomenon and the like are effectively solved, and efficient, stable and uniform distribution under all working conditions is achieved.

The utility model provides a production gas supply mechanism based on a ternary precursor. The production gas supply mechanism comprises a compressed air supply assembly, an oxygen concentration detector and an oxygen compensation assembly. The compressed air supply assembly comprises an air compressor and a gas transmission main pipe, the gas outlet end of the air compressor is communicated with one end of the gas transmission main pipe, and the other end of the gas transmission main pipe is communicated with the gas inlet end of the reaction kettle. And the oxygen concentration detector is arranged on the gas transmission main pipe. The gas outlet end of the oxygen compensation assembly communicates with the gas conveying main pipe.

A reactor and method for conversion of hydrocarbon gases utilizes a reactor (12, 312, 412, 512, 612, 712) having a specific feed assembly with a primary vortex combustion chamber (40, 340, 436, 536, 636, 736), a diffusion conduit (48, 348, 448, 548, 648, 748), and a cylindrical reactor chamber (40, 340, 436, 536, 636, 736). The design creates a compact combustion zone and fluid flow pattern of the inwardly swirling feed gas to form a swirling gas mixture through the diffusion conduit (48, 348, 448, 548, 648, 748). The feed stream can be introduced into the reactor at any angle (perpendicular, axial, or an angle therebetween, or a combination of the above forms) to the swirling flow component. This provides suitable conditions for efficient cracking of hydrocarbons (such as ethane) to form olefins.

The utility model provides ammonia water processing equipment and relates to the technical field of ammonia water processing. The ammonia water processing equipment comprises a tail gas treatment mechanism, wherein the tail gas treatment mechanism comprises a sealing frame. According to the ammonia water processing equipment, ammonia tail gas of the equipment is conveyed into a sealing frame through a first connecting pipe, so that a pressing plate slowly moves upwards, and when a sealing plate ascends to the maximum height, the pressing plate presses an opening switch; thus, an air pump installed on a second connecting pipe is started to convey ammonia tail gas in the sealing cavity to the bottom of the sealing frame to be fused with water again, the non-fused tail gas enters the sealing cavity again, all the ammonia tail gas can be treated through multiple times of circulation, and after the ammonia tail gas is treated, the sealing plate can descend to the lowest position. And the pressing plate presses the closing switch, so that the air pump mounted on the second connecting pipe is closed, and then the electronic control valve mounted on the second connecting pipe is closed, so that the aim of quickly treating the ammonia tail gas by the device is fulfilled.

The present application relates to the technical field of inorganic material preparation, in particular to a method and device for preparing aluminum nitride powder by centrifugal screening. The method breaks the bubbles of nitrogen gas wrapped by the generated aluminum nitride film by continuously stirring during the reaction of aluminum liquid and nitrogen gas, so that the aluminum nitride film is broken into powder and suspended in the aluminum liquid to rise and gather on the surface of the aluminum liquid. This not only ensures that the particle size of the aluminum nitride powder is smaller, which can reach the nanometer level, and improves the product quality, but also releases the nitrogen gas to continue to form more bubbles of nitrogen gas wrapped by the aluminum nitride film, thereby improving the utilization rate of nitrogen gas. Then, part of the material in the reactor is transferred to a liquid-solid separator, and argon gas is sprayed by rotating the centrifugal collector, so that the aluminum liquid and the aluminum nitride powder are separated. After cooling and gas-solid separation, the aluminum nitride powder with small particle size, high purity and low oxygen content is obtained. The raw material utilization rate of the present application is high, the process is less and the production is continuous, which is suitable for industrial application.

The application provides a preparation method and device of high-purity zinc arsenide by multiphase reduction-melt alloying, and belongs to the technical field of inorganic compound synthesis. The method uses arsenic trichloride as an arsenic source, volatilizes the arsenic trichloride by precise temperature control, and transports AsCl3 vapor to a reactor containing high-purity liquid zinc by using high-purity inert gas as a carrier gas; at a set reaction temperature, the liquid zinc reduces the AsCl3 gas phase to generate elemental arsenic, and the elemental arsenic immediately reacts with zinc to generate zinc arsenide Zn3As2 in situ; the by-product zinc chloride ZnCl2 escapes in a gaseous form and is collected by a condensation system, and the zinc arsenide is suspended on the surface of the zinc melt due to the lower density than the liquid zinc, so that continuous or batch separation and collection can be realized. The application has the advantages of simple process, high reaction efficiency and high product purity, avoids problems such as uneven components and introduction of impurities in the traditional solid-phase reaction method, and is suitable for large-scale production of semiconductor-grade zinc arsenide materials.

The application discloses a kind of purification process systems and methods of glycerin for injection, system includes ion exchange unit, oxidation unit, water removal unit, decolorization unit, purification unit in turn fluid communication, ion exchange unit receives upstream industrial glycerol raw material, the glycerol product that the purification unit exports meets the standard for injection.Industrial glycerol is treated in ion exchange unit in turn, and the treatment of removing aldehydes and reducing substance is carried out in oxidation unit, water removal unit is handled in water removal unit, decolorization unit is handled in decolorization unit, and after the deep purification treatment of purification unit, industrial glycerol can be purified to glycerol product meeting each index requirement of glycerol (for injection) in Chinese Pharmacopoeia (2025 edition).

The utility model discloses a high-purity lithium carbonate carbonization reaction device for countercurrent mass transfer of pressurized tower plates, which comprises a first carbonization tower and a second carbonization tower, and the feeding end of the first carbonization tower is communicated with a feeding assembly for conveying lithium carbonate slurry into the first carbonization tower; one side of the first carbonization tower is provided with a gas supply assembly for supplying gas to the first carbonization tower and the second carbonization tower, the output end of the first carbonization tower is communicated with a communicating pipe, and the other end of the communicating pipe is provided with a communicating assembly for communicating with the second carbonization tower. The high-purity lithium carbonate carbonization reaction device for countercurrent mass transfer of the pressurized tower plates has the remarkable technical effects of high reaction efficiency, high carbon dioxide utilization rate, high product purity and the like. With the advantages, the production efficiency is improved, the production cost is reduced, and powerful support is provided for industrial production of high-purity lithium carbonate.

The utility model relates to the field of gas-liquid mixing, in particular to a gas-liquid nano-reactor, which solves the problem of low reaction efficiency of substances with slower gas-liquid reaction, utilizes a mixing cavity to generate a cavitation effect so as to enable gas and liquid to reach nanoscale, increases the gas-liquid contact area and increases the reaction efficiency, and mainly comprises a columnar reactor body, the reactor body is provided with a plurality of mixing cavities which are sequentially communicated along the axis direction; the mixing cavity is sequentially divided into a converging section and a diffusing section in the flow direction of fluid, the converging section is a first conical cavity with the inner diameter gradually reduced in the flow direction of the fluid, and a plurality of vortex-shaped flow guide grooves converging towards the center are formed in the inner wall of the converging section; the diffusion section is a second conical cavity with the inner diameter gradually enlarged in the flow direction of the fluid, and the second conical cavity is communicated with the first conical cavity.

The embodiments presented here provide for a method and a design of heat effective rotated packed beds wherein rotating packed bed technologies have heat transfer capabilities to enhance separation, absorbing, desorbing, and interphase heat exchange capabilities. Such beds are used in industries including heavy processing, chemical, petrochemical and pharmaceutical industries.

The invention belongs to the field of chemical synthesis, and discloses a methanol carbonylation reaction assembly and application thereof in an acetic acid synthesis method and a production system. The methanol carbonylation reaction assembly comprises a shell, a gas feeding pipe, a gas-liquid mixed feeding pipe, a methanol liquid feeding pipe, a liquid injection pipe, a liquid distributor, a gas distributor and liquid outlets, the liquid outlets are distributed in the upper portion and the top of the shell, and the liquid outlet in the upper portion of the shell is connected with the gas-liquid mixed feeding pipe. And the gas-liquid mixed feeding pipe is also communicated with the other end of the gas feeding pipe. The production system provided by the invention comprises the methanol carbonylation reaction assembly provided by the invention. The methanol carbonylation reaction assembly and the production system can be used for acetic acid synthesis. The methanol carbonylation reaction assembly is good in gas-liquid mixing effect, a reaction liquid part recycling system is beneficial to improving the reaction efficiency and the conversion rate, energy consumption is remarkably reduced, and the methanol carbonylation reaction assembly is suitable for acetic acid synthesis.

The application discloses a method for synthesizing catalase nanocapsules based on gas-liquid two-phase flow microfluidic technology and application. Nitrogen is used as a gas phase, and a liquid phase containing acrylated catalase, a monomer mixture and a crosslinking agent is used to form Taylor flow in a microfluidic chip. The internal vortex of the gas-liquid interface is used to enhance the mixing efficiency, and in-situ radical polymerization on the surface of the enzyme is realized. By screening six microfluidic chips with different structures, the geometric parameters of the chip and the hydrodynamic conditions are optimized, and the particle size uniformity and enzyme activity retention rate of the nanocapsules are significantly improved. The application also discloses a continuous flow reactor system for loading the obtained nanocapsules on macroporous resin microspheres to construct a continuous flow reactor system, and the system is used for efficient degradation of hydrogen peroxide in semiconductor wastewater. The method has the advantages of high mixing efficiency, mild reaction conditions, continuous production and the like, the obtained nanocapsules have the advantages of narrow particle size distribution, high enzyme activity and good stability, and are suitable for the field of industrial wastewater treatment.

The invention relates to the technical field of salt lake brine lithium extraction and carbon neutralization, in particular to a method and a device for preparing lithium carbonate from flue gas carbon dioxide. The invention provides a preparation method of lithium carbonate, which comprises the following steps: electrolyzing salt lake brine containing lithium and magnesium in an electrolysis device as electrolyte to obtain cathode production liquid; concentrating the cathode production liquid to obtain a concentrated solution; the industrial flue gas is sequentially subjected to dust removal and washing, and purified carbon dioxide is obtained; and introducing the purified carbon dioxide into the concentrated solution, and carrying out precipitation reaction to obtain the lithium carbonate. The method can achieve the purposes of carbon sequestration and emission reduction, low cost, high-purity conversion and full-component resource utilization.

The utility model provides an efficient carbonizer for purifying lithium carbonate, which comprises a carbonizer main body, the top of the carbonizer main body is provided with a feed port and a gas outlet, the bottom of the carbonizer main body is provided with a gas inlet and a discharge port, and the feed port at the top is provided with a feed nozzle and uniformly sprays lithium-containing slurry into the carbonizer main body. The gas outlet is externally connected with a micro-nano bubble generator and a supercharger, carbon dioxide is treated into nano-scale bubbles and then pressurized into the carbonization tower main body, and an ultrasonic generator is mounted in the carbonization tower main body and emits ultrasonic waves for improving the mass transfer rate during reaction. The solubility of the carbon dioxide is improved, the contact reaction area between the carbon dioxide and the lithium-containing slurry in the carbonization tower is increased, the utilization rate of the carbon dioxide is improved, and the production cost is reduced.

The invention relates to the technical field of melamine, and discloses a method and a system for producing sodium carbonate and liquid ammonia by using melamine tail gas, the production method comprises the following steps: reacting the melamine tail gas with a caustic soda solution in a reactor to form solid-containing slurry and residual gas; wherein the temperature of the reaction ranges from 100 DEG C to 250 DEG C, and the pressure of the reaction ranges from 0.1 MPa to 0.6 MPa; sequentially carrying out flash evaporation and solid-liquid separation on the solid-containing slurry, and drying the obtained solid to obtain a sodium carbonate product; and condensing and rectifying the residual gas in sequence to obtain a liquid ammonia product. By utilizing the characteristic that the solubility of carbon dioxide and ammonia in the melamine tail gas in alkali liquor is different, the complete separation of ammonia and carbon dioxide is realized, the carbon dioxide and caustic soda generate sodium carbonate, and the economic benefit of the product is increased; meanwhile, almost no waste residue exists, and the energy consumption is low.

The present invention relates to a plant and method for the purification of fumes from industrial discharges and / or for the recovery and reconversion of sulfur oxides and / or nitrogen oxides and / or carbon dioxide contained in said fumes. Said method comprises the passage into one or more aqueous solutions, where said aqueous solutions are selected from the group comprising: —solution with an acid pH, between 0.5-1; —solution at a pH between 3 and 5, at about pH 4; —Ca(OH)2 or CaCl2 or calcium acetate solution; —solution at a pH between 8 and 9.

A natural gas zero-carbon heating and carbon material co-production system based on liquid metal catalytic cracking and a control method thereof. The present application belongs to the technical field of energy chemical industry and clean heating. The present application solves the problems of low utilization rate, high carbon emission and poor economy of traditional heating equipment. The present application uses pipeline natural gas as raw material, which is cracked into hydrogen and solid carbon in a high-temperature liquid metal catalytic cracking reactor; the hydrogen is fed into a double-loop combustion chamber, a part of which is combusted to provide zero-carbon heating for the terminal, and the other part of which is combusted to provide heat energy back to the cracking reactor to form an energy closed loop; the solid carbon is separated and post-processed into high-value carbon material products. The present application is provided with a dynamic carbon management device and an arc-shaped flow guide inner wall to ensure long-term continuous operation of the reactor, and can also realize heat, electricity and cold combined supply through valve switching. The present application realizes the collaborative conversion of natural gas into clean heat energy and high-value carbon materials, has the characteristics of zero-carbon environmental protection, severe cold adaptation and economic profitability, and meets the demand for composite energy.

The utility model relates to the technical field of hydrogen bromide purification, and discloses an electronic-grade hydrogen bromide purification device which comprises a settling tank, a rotary feeding mechanism is arranged on the settling tank, and a waste gas discharge mechanism is arranged at the top of the settling tank; the rotary feeding mechanism comprises a supporting seat, the supporting seat is fixedly mounted at the top of the settling tank, a fixed pipeline is fixedly mounted on the inner wall of the supporting seat, and a first valve pipe is fixedly connected to the top of the fixed pipeline. Through the overall design of a rotary introduction mechanism, ozone can be introduced from a first valve pipe, the ozone can penetrate through a rotary pipeline to be output from the end of a branch pipeline, meanwhile, through work of a driving motor, the rotary pipeline can be driven to rotate integrally, so that the ozone is rotationally introduced into a stock solution, and meanwhile, a stirring paddle can be driven to rotate; the stirring paddle can stir the stock solution, so that the contact effect of the stock solution and the ozone is further improved, the utilization rate of the ozone is improved, and the consumption of the ozone is reduced.

The utility model relates to baking soda crystallization production equipment technical field discloses a kind of baking soda crystallization production equipment, including alkali bucket, the side of alkali bucket is connected with clarifying tank, the side of clarifying tank away from alkali bucket is connected with PE filter, for filtering;The end of PE filter away from clarifying tank is connected with reaction carbonization tower, and the side of reaction carbonization tower is arranged with thickener;Alkali bucket, clarifying tank and PE filter sequentially treat raw material, alkali bucket dissolves raw material, clarifying tank preliminary precipitates impurity, PE filter carries out fine filtration, effectively removes various impurities in raw material, guarantees the solution purity of entering reaction carbonization tower, creates good condition for subsequent reaction and crystallization.

The utility model belongs to the technical field of gas distributors, and particularly relates to an unpowered rotary gas distributor which comprises a gas main pipe, the lower end of the gas main pipe is connected with a plurality of distributor branch pipes, and the gas main pipe is communicated with inner cavities of the distributor branch pipes. The plurality of distributor branch pipes are radially distributed in a manner of rotating around the gas main pipe, and a plurality of gas holes are formed in each distributor branch pipe and are formed in one side, opposite to the rotating direction, of each distributor branch pipe. When gas is sprayed out along the distributor, a moving part of the distributor starts to rotate, so that the gas is uniformly distributed in reaction liquid from the bottom in a gas-liquid phase reactor in a bubble form, meanwhile, due to the rotating action of the moving part, the bubbles are more uniformly distributed, the reaction liquid is stirred, the gas-liquid phase contact is more facilitated to generate reaction, meanwhile, a stirrer is omitted, and the production cost is reduced. The gas header pipe is fixedly connected with the reactor opening, so that a moving sealing part of the stirrer shaft and the reactor opening is omitted, and the leakage risk of chemical substances is reduced.

The application belongs to the technical field of fluid mixing, and discloses a high-efficiency nanoscale gas dispersion device, which comprises a shell, an inlet and an outlet are distributed on the outer side of the shell, a gas dispersion mechanism is arranged in the shell, the outer surface of the gas dispersion mechanism is provided with dispersion areas with different pore diameters, a top mounting seat and a bottom mounting seat are respectively arranged at the upper end and the lower end of the gas dispersion mechanism, and a shielding assembly is rotatably sleeved on the outer side of the gas dispersion mechanism. The ceramic diaphragm with different micropore diameters is integrated into a rotatable gas dispersion pipe, and the shielding assembly can be synchronously or relatively rotated, so that the micropore area for gas escape can be switched, the generated bubble size can be controlled, and the specific requirements of different reaction stages or different processes on the gas-liquid mass transfer interface can be matched, so that the reaction process is greatly optimized, and the quality and yield of the final product are improved.

The application discloses a gas-liquid phase parallel flow rotating liquid film reactor and application thereof in preparation of metal hydroxide. The application is based on the basic process of preparing metal hydroxide from a gas-liquid phase precipitation method, and a gas-liquid phase multi-fluid parallel flow rotating liquid film reactor is designed through computational fluid dynamics simulation analysis, multiple gas-liquid fluid inlets are constructed, and the traditional vertical inlet is improved into tangential feeding along the rotating direction, so that the forced mixing process of the gas-liquid two phases in the reaction space is improved, the microscopic mixing and nucleation process of the reactants are strengthened, the inlet anti-overflow device is added, the upward overflow of the increased inlet flow fluid is avoided, the quality control of the product is strengthened, the efficient control of the nucleation particle size and distribution is realized, the production efficiency and product quality can be improved, the product with small particle size and narrow particle size distribution is obtained, the product particle size can be controlled in the range of 15-200 nm, and the primary particle size distribution range can be reduced to 30-60 nm.