313results about "Liquid-gas reaction processes" patented technology

The invention discloses an in-kettle environment pressure stabilizing structure applied to an anhydrous hydrogen fluoride arsenic removal process, relates to the technical field of arsenic removal processes, and provides an improvement process about a rubber isolation pad and a lower supporting table on the basis of an oxidation reaction process in the anhydrous hydrogen fluoride arsenic removal process and on the basis of not changing the reaction process. The basic content is as follows: the reaction volume in the reaction cavity is changed by utilizing the elastic deformation of the rubber isolation pad and the supporting effect of the lower supporting table, so that the effect of preliminarily adjusting the environmental pressure in the reaction cavity is achieved; a combined or independent regulation and control process is carried out mainly aiming at a low-pressure state and an overpressure state, a pressure difference and pressure balance transfer principle is further utilized, and the environment pressure stabilizing effect in a container is achieved through the simplest and effective structure.

The invention discloses a micro-channel continuous reaction device applied to gas-liquid oxidation reaction. The micro-channel continuous reaction device comprises a feeding system, a micro-channel reaction module, a temperature control system, a product collection system and a control regulation system, the feeding system conveys a gas raw material and a liquid raw material into the micro-channel reaction module; the micro-channel reaction module comprises three or more micro-channel units which are connected in series, and each micro-channel unit comprises a plurality of gas-liquid mixers and a plurality of enhanced mixing reactors; the temperature control system is used for accurately controlling the reaction temperature; the product collecting system is used for separating and collecting reaction products; and the control adjusting system is used for monitoring and adjusting reaction conditions in real time. According to the invention, efficient mixing and uniform distribution of gas and liquid phases can be realized, the reaction efficiency is remarkably improved, side reactions are reduced, real-time monitoring and adjustment of reaction conditions are realized, and the operation stability and safety are improved.

The invention relates to the technical field of iron phosphate production, in particular to a production process and equipment for preparing iron phosphate based on an oxygen micro-interface reaction gas oxidation method and iron phosphate. The micro-nano bubble oxygen is used for replacing hydrogen peroxide to serve as an oxidizing agent, so that the production process of iron phosphate is optimized, and the reaction efficiency and the product quality are remarkably improved. The special property of the micro-nano bubble oxygen enables the micro-nano bubble oxygen to effectively improve the mass transfer efficiency and the reaction rate of the oxygen under the conditions of higher temperature and lower concentration, so that the efficient oxidation of ferrous in the raw material and the crystal form control of ferric phosphate are promoted. Oxygen is injected into the reaction liquid and forms superfine bubbles through the micro-nano bubble generator, so that the oxygen solubility and the reaction speed at a gas-liquid phase interface are enhanced. The oxygen generator is used for uniformly distributing bubbles in the whole reaction system by precisely controlling the gas flow and the bubble size, so that the uniformity and efficiency of the reaction are ensured.

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.

To provide a liquid distribution device capable of easily reducing liquid holdup and reducing a pressure drop, and achieving a uniform distribution performance of liquid, with a simple structure.SOLUTION: A liquid distribution device 1 distributes liquid dropped from an upper side to a lower side, and causes a gas raised from a lower side to pass through an upper side, and the liquid distribution device comprises: a top plate 2 which partitions, a closed space V1 storing liquid, and a first space V2 positioned above the closed space V1; a floor plate 3 which partitions the closed space, and a second space V3 positioned below the closed space V1; a liquid supply pipe 4 which is provided on the first space V2 and has a liquid channel 4A communicated with the closed space V1; and a plurality of gas vent pipes 5 which penetrates the closed space V1, and communicates the first space V2 with the second space V3, the floor plate 3 has a plurality of open holes 6 which communicates the closed space V1 with the second space V3.SELECTED DRAWING: Figure 1

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.

A hydrate reactor (1) and a system using the reactor (1) are disclosed. The reactor (1) comprises a vertical pressure vessel-shaped cylindrical body (100) with a gas-liquid mixture inlet (101) at the bottom, a hydrate discharge port (102) at the top, and a liquid drain port (103) at the bottom. The cylindrical body (100) is also provided with a heat transfer assembly (110) in the center of the cylindrical body (100), which includes a plurality of six-sided honeycomb-shaped channels with inclined walls. The inclined walls of the honeycomb-shaped channels conduct and dissipate heat of hydration during the process of hydrate formation as the gas-liquid mixture passes through the honeycomb-shaped channels. The presence of the heat transfer assembly (110) in the reactor effectively increases the contact time between the gas and liquid, which is more favorable for rapid transfer of the heat of hydrate formation, thereby increasing the efficiency of hydrate formation.

The invention discloses a method for continuously oxidizing olefin wax by pure oxygen based on a micro-channel reactor, the micro-channel reactor comprises a plurality of gas-liquid mixers and a plurality of reinforced mixing micro-channel reactors, and two adjacent reinforced mixing micro-channel reactors are connected through the gas-liquid mixers; the method comprises the following steps: melting olefin wax, introducing the olefin wax into a microchannel reactor, injecting pure oxygen into a reinforced mixing microchannel reactor in sections by adopting a gas-liquid mixer, filling the reinforced mixing microchannel reactor with a triangular spiral filler and a glass bead material with two-stage sizes, and in the reaction process, enabling the volume concentration of oxygen to be always lower than 25% and the reaction temperature to be 100-180 DEG C, the pressure is 0-2 MPa. On the basis of the micro-channel reactor, an efficient and safe olefin wax pure oxygen oxidation process is realized through oxygen segmented injection and a safety control strategy.

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 invention belongs to the technical field of NO gas preparation in the production process of coal ethylene glycol devices, and discloses a start-up method of an NO gas production device in coal ethylene glycol, which comprises the following steps: step 1): preparing materials; according to the driving method disclosed by the invention, key process indexes such as nitric acid dropping speed, pressure, temperature and NO gas flow are strictly controlled in the whole driving process, so that severe reaction and overpressure safety accidents are prevented, and the gas quantity required by a downstream dimethyl oxalate synthesis unit is stably supplied.

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 utility model discloses an efficient fluid distributor of a petrochemical packed tower, which comprises a primary shunting groove, a secondary shunting groove and a plurality of third-stage shunting grooves, the primary shunting groove is positioned above the interior of the secondary shunting groove, and the plurality of third-stage shunting grooves are positioned below the secondary shunting groove and are vertical to the arrangement direction of the secondary shunting groove; flow dividing holes are formed in the bottoms of the inner walls of the primary flow dividing groove, the secondary flow dividing groove and the third-stage flow dividing groove at equal intervals in the axial direction; supporting rods are installed in the secondary flow dividing groove and the third-stage flow dividing groove, knockout ropes are hung on the supporting rods, the lower ends of the knockout ropes penetrate through the flow dividing holes, knockout discs are hung at the lower ends of the knockout ropes, and connecting ropes making contact with the bottoms of the inner walls of the secondary flow dividing groove and the third-stage flow dividing groove are connected between every two adjacent knockout ropes. According to the utility model, the knockout ropes are arranged in the shunting holes, and fluid can impact the knockout disc to drive the knockout ropes to swing and continuously stir in the shunting holes when being sprayed downwards, so that the problem that materials are coked to block the shunting holes is effectively avoided, and uneven shunting is prevented.

The utility model relates to a device for preparing 2-chloro-5-chloromethylthiazole by gas-liquid countercurrent continuous flow, which comprises a feeding device, a tower reactor, a discharging device and a recovery device which are sequentially connected through pipelines, and the feeding device comprises a liquid feeding device and a gas feeding device. According to the utility model, a traditional intermittent kettle type process is converted into a gas-liquid countercurrent continuous flow type process, so that the operation efficiency is improved, the liquid holdup of a reaction system is reduced, the raw material cost is reduced, the energy utilization rate is improved, the quality and yield of 2-chloro-5-chloromethylthiazole are improved, the generation of three wastes is reduced, and the safety of personnel is further improved.

The invention provides a phosphorus trifluoride production system and a preparation method thereof, and belongs to the technical field of phosphorus trifluoride manufacturing. The phosphorus trifluoride production system comprises a static reactor, a gaseous fluorine source, a liquid phosphorus source, a condenser and a collector. The static reactor comprises a static mixer and a jacket type shell wrapping the static mixer, the static mixer is used for mixing reaction raw materials and providing a reaction place, and a heat exchange cavity used for containing a heat exchange medium is formed in the jacket type shell; when the production system is used for preparing phosphorus trifluoride, the problems that the mass transfer effect between a gaseous fluorine source and a liquid phosphorus source is poor and the material distribution uniformity is poor can be effectively solved, and meanwhile, the whole material system can have better temperature consistency, so that the reaction raw materials can react more efficiently and thoroughly to form phosphorus trifluoride.

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 invention discloses an intermittent hydrogenation reaction system, and belongs to the technical field of hydrogenation reaction systems. Comprising a hydrogenation reaction kettle, a first jet device, a secondary pressurizing unit, a second jet device, a hydrogen recycling unit and an emptying pipe valve, wherein the input end of the first jet device is connected with a Y-shaped tee joint; the other two ends of the Y-shaped tee joint are connected with a nitrogen pressure pipeline and a hydrogen pressure pipeline; the middle end of the first jet device is connected to the catalyst feeding unit; the secondary pressurizing unit comprises a pressure-multiplying hydrogen tank, the pressure-multiplying hydrogen tank is connected with a first switch valve through a flange, the first switch valve is connected to an inclined tee joint, and the other two ends of the inclined tee joint are connected to the output end of a first jet device and a second switch valve respectively; according to the intermittent hydrogenation reaction system, multiple times of hydrogen participating in the reaction can be recycled and fully utilized, dynamic gas-liquid mixing is achieved, the hydrogen, a catalyst and liquid are fully mixed, the completeness of the hydrogenation reaction is guaranteed, and hydrogen energy consumption is reduced.

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 present invention relates to an absorption tower (10) for a plant for the production of nitric acid by the Ostwald process, comprising a plurality of sieve trays (14) spaced apart from one another and arranged one above the other, an inlet (12) for water in an upper region of the absorption tower, an inlet (13) for gaseous nitrogen oxides in a lower region of the absorption tower (10) and a column sump (15) arranged in the lower end region of the absorption tower beneath the lowest sieve tray, which sump is subdivided by at least one partition (16) into at least two regions (20, 21) separated from one another, wherein, according to the invention, at least one partition (16) is arranged in a course such that the partition divides the column sump (15) into a first, radially inner region (20) and at least one second, radially outer region (21). Because the regions (20, 21) are separated from one another, it is possible initially to trap in a central region the nitric acid which drips from the lowest sieve trays (14) and thus has a higher concentration. The nitric acid then draining from sieve trays located further above, which is less concentrated, can then be captured separately in a region (21) located further outwards.

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.