114 results about "Gas liquid reaction" patented technology

The invention provides a method for realizing direct mineralization of carbon dioxide in air by using natural ore. The method comprises the following steps: S1, crushing and activating natural ore to obtain an activated ore raw material; s2, the activated ore raw materials are fed into a mineralization reaction system, and air is introduced into the mineralization reaction system for a mineralization reaction; wherein the mineralization reaction system is carried out by adopting a gas-liquid reactor or a gas-solid reactor. According to the method, the mineralization reaction activity of the natural minerals in the mineralization reaction system can be enhanced, so that the problems of relatively low reaction speed and the like caused by relatively low concentration of carbon dioxide in the direct mineralization process of air are solved, and the mineralization reaction speed of the natural minerals reaches 10-100g CO2 / m < 2 >. H; the air carbon dioxide fixing amount in unit time and unit reactor sectional area can be obviously increased.

The invention belongs to the technical field of gas pollutant treatment, and particularly relates to filler for a gas-liquid reactor and application of the filler. The filler comprises a high-wettability corrosion-resistant polymer layer and a corrugated partition plate layer used for providing a channel for gas. The polymer layers and the corrugated partition plate layers in the filler are arranged at intervals, and the two polymer layers are arranged on the two sides of each corrugated partition plate layer in an attached mode respectively; the filler provided by the invention is formed by coupling the high-wettability polymer layer and the corrugated partition plate layer, the high wettability of the polymer layer can ensure that liquid is uniformly distributed on the polymer layer, and a layer of uniform water film is formed, so that the reaction efficiency of reaction gas and the liquid is improved, and a product after the reaction can be taken out by the liquid on the water film in time; the air resistance is reduced and the reaction efficiency is improved.

The invention discloses a gas-liquid reaction system. The gas-liquid reaction system comprises a wastewater pool, an ozone generator, an oxidation reaction tank and a first micro-interface generator located in the oxidation reaction tank. An inlet of the first micro-interface generator is communicated with the wastewater pool and the ozone generator, and an outlet of the first micro-interface generator is communicated with the inside of the oxidation reaction tank. Therefore, wastewater in the wastewater pool and ozone produced by the ozone generator can be simultaneously conveyed to the first micro-interface generator, the wastewater and the ozone oppositely run in the first micro-interface generator to crush and disperse the ozone into micron-sized ozone micro-bubbles, and the mass transfer area between the ozone micro-bubbles and the wastewater in the oxidation reaction tank can be increased by the ozone micro-bubbles; the oxidation reaction between the ozone and the wastewater is promoted, so that the utilization rate of the ozone is improved. As the oxidation reaction tank is communicated with the wastewater pool, unreacted ozone in the oxidation reaction tank can be conveyed into the wastewater pool to oxidize wastewater, so that the unreacted ozone is fully utilized, and zero emission of ozone is realized.

The invention relates to the technical field of cable combustion test equipment, in particular to a cable combustion test integrated flue gas purification treatment system and method.The cable combustion test integrated flue gas purification treatment system comprises a shell, a purification cavity used for treating flue gas is formed in the shell, and a flue gas inlet and a flue gas outlet which are communicated with the purification cavity are formed in the outer portion of the shell; the washing liquid supplying and spraying device is used for continuously supplying and spraying washing liquid into the purification chamber according to a preset spraying path; and the gas-liquid contact retention device is arranged in the purification chamber, is positioned at the downstream of the spraying path and is used for intercepting and gathering the washing liquid. According to the invention, the gas-liquid contact retention device is arranged to intercept and gather the washing liquid to form a dynamic liquid seal, so that flue gas is forced to pass through the retention area, the gas-liquid reaction time is greatly prolonged, and efficient and deep purification of acid gas and soluble pollutants is realized; and finally, the remarkable technical effects of improving the purification efficiency and ensuring that the discharged gas is environmentally friendly and reaches the standard are achieved.

The invention relates to the technical field of waste gas treatment, and discloses a waste gas recovery tower which comprises a tower body, a gas inlet pipe arranged on the side wall of the bottom, a gas outlet pipe arranged on the top, manholes uniformly distributed in the side wall and sealed through flanges; the gas-liquid reaction section comprises an aeration assembly immersed below the liquid level of the liquid storage tank and a rotary spraying assembly located above the liquid level, the aeration assembly and the rotary spraying assembly are in reverse rotation linkage through a planetary gear transmission mechanism, and the rotary spraying assembly is driven by a driving assembly; through the reverse flow field design of upward spraying of the gas spraying ring and downward spraying of the liquid spraying ring and in combination with a two-way rotating mechanism driven by a planetary gear transmission mechanism, the liquid spraying ring and the gas spraying ring continuously and reversely rotate to generate dynamic shearing force, and gas and liquid phases form a continuously updated contact interface in an annular turbulence gap; the pollutant absorption efficiency is obviously enhanced, and the mass transfer bottleneck of a traditional spray tower is broken through.

The invention belongs to the technical field of chemical engineering and fine fluorine chemical synthesis, and particularly relates to a preparation method of sulfuryl fluoride chloride. According to the preparation method, through the synergistic effect of a gas-liquid reaction system and a closed-loop circulation system, a tertiary amine hydrofluoric acid adduct (such as Et3N.nHF, n = 2-6) is used as a fluorinating reagent, sulfuryl fluoride chloride is generated through a rapid cross-flow reaction in excessive sulfuryl chloride (SO2Cl2) under the conditions that the temperature is 65-100 DEG C and the pressure is 0.5-2.0 MPa, and a liquid-phase byproduct tertiary amine hydrochloride hydrogen fluoride adduct (such as Et3N.HCl. (n-1) HF) is used for preparing the sulfuryl fluoride chloride. Supplementing hydrogen fluoride to regenerate the catalyst and recycling; and after a gas-phase product is pressurized, rectified and purified by a light component removal tower and a heavy component removal tower, totally returning a light component (Cl2 / SO2) and a heavy component (SO2Cl2) to a synthesis system for recycling. According to the method, the reaction temperature, the reaction pressure, the liquid phase dispersion degree and the contact time are accurately controlled, so that the reaction product generates SO2FCl with high selectivity, and the byproduct (R3N.HCl. (n-1) HF) is kept in a liquid phase, so that the reaction can be continuously carried out, and conditions are created for subsequent treatment.

The invention relates to the technical field of gas-liquid reaction devices, in particular to a double-shaft stirring single-flow-channel horizontal device for solid catalyst catalytic gas-liquid reaction, a reaction body is divided into an upper flow cavity and a lower flow cavity by a partition plate, the upper flow cavity and the lower flow cavity are communicated, a plurality of air inlet pipes are arranged in the lower flow cavity, and a plurality of exhaust pipes are arranged at the top of the upper flow cavity. The structural design that the first stirring assembly pushes materials rightwards and the second stirring assembly pushes materials leftwards is combined, continuous feeding reaction is achieved, the flowing path is prolonged after reaction liquid enters the reaction body, the reaction liquid can make full contact with gas for reaction, and the quality of reaction products is improved; air can be exhausted in time, so that the air blocking phenomenon is avoided, and the feeding difficulty is reduced; a filter plate structure is arranged close to the right end in the reaction body, so that catalyst particles are effectively prevented from being discharged along with products, and the catalyst use efficiency is improved.

A nitrogen concentration prediction method according to the present invention predicts the nitrogen concentration in molten steel during a vacuum degassing treatment. The method comprises a prediction step for calculating a predicted value of the nitrogen concentration in molten steel using a nitrogen concentration prediction model which is a physical model in which a gas-liquid reaction interfacial area for a nitrogen absorption reaction and a denitrification reaction is used as an input variable and the predicted value of the nitrogen concentration in molten steel S is used as an output variable. The prediction step includes an estimation step for estimating the gas-liquid reaction interfacial area by estimating at least one of a bubble reaction interfacial area, a molten steel bath surface area in the vacuum tank, and the amount of change in the gas-liquid reaction interfacial area due to generation of air bubbles from the molten steel, using a calculation formula in which vacuum degassing treatment conditions are used as variables.

The invention relates to a multicomponent VOCs multiphase advanced oxidation and efficient absorption purification device and a purification method thereof, and belongs to the technical field of waste gas treatment.The multicomponent VOCs multiphase advanced oxidation and efficient absorption purification device comprises a supporting base, an oxidation tower and an adsorption tower are fixedly connected to the top of the supporting base, and a gas-liquid mixing structure capable of improving the gas-liquid reaction efficiency is arranged in the oxidation tower; the gas-liquid mixing structure comprises a tower plate fixedly connected to the interior of the oxidation tower, and a gas rising pipe is fixedly connected to the upper surface of the tower plate. According to the multi-component VOCs complex-phase advanced oxidation and efficient absorption purification device and the purification method thereof, physical and chemical reactions in five forms of gas-liquid, liquid-liquid, gas-gas, aerial fog and gas-solid are continuously generated in the device through a bubble cap tower plate, a rotational flow plate and a top gas injection pipeline which are arranged in the oxidation tower as well as a non-metal filler plate and an atomization nozzle which are arranged in the adsorption tower; the multi-mechanism and complex-phase synergistic purification path ensures that VOCs and malodorous gases with different properties can be efficiently degraded and removed.

The application discloses a method for regulating solidification structure of aluminum-silicon-iron alloy by gas-phase synergistic double-melt blending. CH4 gas is introduced into high-temperature aluminum-titanium alloy liquid, C-containing active particles are decomposed from the CH4 gas in the alloy melt and gas-liquid reaction occurs between the C-containing active particles and Al and Ti particles to generate intermediate phases such as Al4C3 and Ti3AlC and unstable TiC particles, and the intermediate phases react to generate thermodynamically stable TiC nanoparticles. Meanwhile, aluminum-silicon alloy melt and aluminum-iron alloy melt with significant difference in volume and temperature are blended in a controlled diffusion manner to obtain aluminum-silicon-iron melt. During the gas-liquid blending process, due to the opposite directions of solid / liquid interface advancing direction and solute diffusion direction during melt solidification, there exist non-local micro temperature and concentration fluctuations, and grain refinement is realized by controlling the solidification nucleation and diffusion growth process. The gas-liquid casting technology is a new process with multiple processes in synergistic action, and multiple processes can have a superposition effect under synergistic action, so that the synergistic refinement of aluminum-silicon-iron alloy second phase and aluminum grains is realized.

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 utility model relates to the field of chemical production technology discloses a kind of gas-liquid reaction equipment with micro-bubble preparation function.The gas-liquid reaction equipment with micro-bubble preparation function includes reaction piece and ultrasonic emission component, and reaction piece is provided with reaction cavity;Ultrasonic emission component is arranged in reaction cavity, including multiple ultrasonic transducers and several ultrasonic energy absorbers, multiple ultrasonic transducers are spaced apart along vertical direction, ultrasonic energy absorber is arranged between any adjacent two ultrasonic transducers, serpentine reaction channel is formed between multiple ultrasonic transducers, liquid and gas can pass through serpentine reaction channel, ultrasonic transducer is configured to emit ultrasonic wave, and ultrasonic energy absorber is configured to absorb reflected ultrasonic wave.The gas-liquid reaction equipment with micro-bubble preparation function can avoid the occurrence of ultrasonic interference effect, the generation of standing wave field and the appearance of multi-path reflection phenomenon, reduce the loss of ultrasonic energy, and ensure the efficiency of gas-liquid reaction.

The present invention relates to a gas introduction unit for introducing a process gas into a liquid present in a reactor without bubbles, the gas introduction unit comprising: a first gas-receiving chamber and a second gas-receiving chamber spaced apart therefrom, the two gas-receiving chambers being connected to one another via at least two two-dimensional gas-conducting diffusion membranes made of hollow fibers spaced apart from one another and at least a portion of which are fixed to one another; a gas supply receptacle provided in at least one of the gas receiving chambers; a receptacle for the shaft provided in at least one of the gas receiving chambers; The gas introduction unit for introducing gas into the liquid in the reactor can supply process gas via a gas supply receiver and can be set in rotational motion via a shaft receptacle, and convection can be created in the reactor via the rotational motion of the gas introduction unit in the liquid.

The invention discloses a spraying type gaseous efficient deoxidizing device and method for lead-based liquid metal. The device and method are applied to gaseous efficient deoxidizing of the lead-based liquid metal. Comprising an inlet connecting pipe, an inlet cavity, a reaction cylinder, an exhaust cylinder, a jet pipe column and a nozzle, the upper end of the reaction cylinder is provided with a top plate, the lower end of the reaction cylinder is provided with a bottom plate, and the bottom of the reaction cylinder is provided with an inlet cavity; a jet pipe column is arranged in the reaction cylinder, the bottom end of the jet pipe column is welded to the bottom plate, the bottom of the jet pipe column is communicated with the inlet cavity, lead-based liquid metal flowing in from the inlet connecting pipe is divided in the inlet cavity and then enters the jet pipe column, and nozzles in the circumferential direction are arranged at the top of the jet pipe column. And the lead-based liquid metal sprayed from the nozzle can enter the reaction cylinder or the exhaust cylinder. The multiple jet flow pipe columns are arranged in the reaction cylinder, lead-based liquid metal is sprayed out from the nozzles after being accelerated in the jet flow pipe columns, and the gas-liquid reaction area is increased; an air inlet pipe is arranged beside the jet pipe column, and the initial turbulent flow and mixing effect is enhanced.

The utility model relates to the technical field of preparation of dichloropropanol from glycerol, in particular to a production system for producing dichloropropanol through glycerol chlorination. The device comprises an adipaldehyde mixing tank for mixing adipaldehyde and pure water, a gas-liquid reaction kettle for absorbing chlorine in crude hydrogen chloride, a first microporous filter for filtering out a catalyst, a cooler for cooling crystals and a second microporous filter for removing crystals. The method has the effects of improving the problem of side reaction caused by chlorine impurities in crude hydrogen chloride and increasing the conversion rate of glycerol.

The application discloses a self-energy-supply piezoelectric ceramic atomization device and relates to the technical field of gas-liquid reaction equipment.The self-energy-supply piezoelectric ceramic atomization device comprises a reaction kettle and a self-energy-supply piezoelectric ceramic atomizer.The self-energy-supply piezoelectric ceramic atomizer comprises a shell, a piezoelectric atomization module and a fluctuation power generation module.The piezoelectric atomization module comprises a liquid storage tank, a liquid inlet pipe and a piezoelectric ceramic atomization sheet.The fluctuation power generation module comprises a fluctuation pressure sensor, a cantilever pipe arranged on the fluctuation pressure sensor and metal balls arranged in the cantilever pipe.When liquid fluctuation impact in the reaction kettle drives the self-energy-supply piezoelectric ceramic atomizer, the kinetic energy of the liquid drives the metal balls in the cantilever pipe to reciprocate and fluctuate, the pressure is transmitted to the fluctuation pressure sensor to generate mechanical energy, the piezoelectric atomization module is triggered to form electric energy for driving, energy self-supply and high-efficiency energy saving are realized;after the piezoelectric atomization module is electrified, the liquid is atomized into micron-level fine droplets, and the contact area of the gas-liquid two phases is increased.

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 utility model discloses a kind of double-pipe reactors for ammoniation compound fertilizer production, including acid liquid pipe, ammonia pipe, baffle, reaction tube, fixed rod, guide vane, ammonia separator, distributor, liquid inlet, gas inlet and cooling water system.Spiral guide vane is set to extend the retention and reaction time of acid liquid in reaction tube;Through the fine distribution of ammonia gas of mesh hole ammonia separator, the contact area of ammonia gas and acid liquid is increased, the contact path and time of ammonia gas and acid liquid are extended, so that ammonia gas and acid liquid are uniformly and fully reacted in reaction tube.The application solves the problem of low gas-liquid reaction uniformity and mixing efficiency, and controls the reaction temperature through the cooling water system to avoid local overheating leading to nutrient decomposition.

The present application relates to the technical fields of organic chemical synthesis, and discloses a method for synthesizing pyromellitic acid. The method comprises the following steps: (1) under gas-liquid reaction conditions, contacting liquid-phase materials containing durene, a solvent and a catalyst with an oxygen-containing gas in a micro-channel reactor to perform first oxidation, so as to obtain first oxidation materials, wherein the conditions of the first oxidation are such that the conversion rate of the durene reaches more than 99%, and the total molar amount of a monocarboxyl product, a dicarboxyl product and an intermediate product of the oxidation of the monocarboxyl product to the dicarboxyl product in the first oxidation materials is more than 85% of the molar amount of the first oxidation materials; and (2) sending the first oxidation materials into a reaction kettle to perform second oxidation. The method for synthesizing pyromellitic acid provided by the present application has the advantages of high yield, good selectivity, low possibility of blockage of the micro-channel reactor, high oxidation efficiency, safe reaction, economy and environmental protection.

The invention discloses a plasma water treatment device, a conducting layer and a method. The plasma water treatment device comprises a power supply, a water tank, a plasma generator and a gas-liquid reactor, the power supply is electrically connected with the plasma generator, the plasma generator is communicated with the gas-liquid reactor, and the water tank is communicated with the gas-liquid reactor; a dielectric medium is arranged in the plasma generator, conductive layers are arranged on the inner surface and the outer surface of the dielectric medium, and each conductive layer comprises a Ti plate layer and a graphene oxide coating. According to the plasma water treatment device, the conducting layers wrap the inner surface and the outer surface of the dielectric medium to serve as the high-voltage electrode and the grounding electrode, the plasma generator and the gas-liquid reactor are arranged separately, discharging is conducted in air to generate plasma, discharging is more stable, and the plasma water treatment effect is better. The energy utilization rate is high, and the safety of the plasma generator during discharging is ensured.

The invention discloses battery-grade lithium carbonate as well as a preparation method and application thereof, and the preparation method comprises the following steps: synchronously introducing a lithium-containing solution and carbon dioxide bubble water into a reaction device, and reacting to obtain lithium carbonate; the carbon dioxide bubble water is prepared by adopting the following method: simultaneously introducing carbon dioxide and water into a shear pump, and shearing and mixing to prepare the carbon dioxide bubble water. According to the method, the traditional gas-liquid reaction that carbon dioxide is directly introduced into the lithium-containing solution is creatively transformed into a gas-liquid-liquid reaction system that carbon dioxide bubble water prepared in advance and the lithium-containing solution are synchronously introduced, so that the product purity and stability are remarkably improved, and the bottleneck of a traditional intermittent process is broken through; the preparation method is simple, the production capacity and efficiency are remarkably improved, industrial large-scale production is easy to realize, and the obtained product lithium carbonate crystal is complete in growth, concentrated and controllable in particle size distribution and regular in morphology, and meets the processing requirements of high-end battery materials.

The present application relates to a kind of liquid membrane reactor for gas-liquid reaction and the method of gas-liquid reaction.The reactor includes reactor shell and the several reaction tubes for carrying out chemical reaction arranged in reactor shell;The reactor shell is filled with reaction gas between reaction tube;Reaction liquid film is formed on the outer wall of the reaction tube;The inside of the reaction tube is used for the flow of heat conducting medium circulation.The reactor of the present application can improve the gas-liquid mass transfer efficiency under high viscosity system;Effectively prevent the liquid flooding phenomenon under high gas speed;While it can solve the problem of high viscosity material blockage, easy to clean and maintain.

The utility model relates to a bubbling reaction device which comprises a kettle body, a stirring shaft and a driving assembly, the lower end of the stirring shaft extends into the kettle body, and a gas channel is arranged in the stirring shaft; the driving assembly is arranged outside the kettle body and is in transmission connection with the upper end of the stirring shaft to drive the stirring shaft to rotate around the axis of the stirring shaft, the filtering type stirrer is connected to the stirring shaft in the kettle body and comprises a hollow framework layer and at least one filtering layer, the hollow framework layer is communicated with the gas channel, and the filtering layer is communicated with the stirring shaft. The filtering layers are formed outside the framework layer, when the multiple filtering layers are arranged, the multiple filtering layers are arranged inside and outside, and the hole diameter of the filtering holes in the filtering layer located on the outer layer is smaller than that of the filtering holes in the filtering layer located on the inner layer. According to the utility model, the influence of a gas distributor on a stirring flow field is avoided, bubbles can reach a micron level, the contact specific area of gas-liquid reaction is increased, the gas-liquid separation is slowed down, the gas content of a reaction system is increased, and the input power is greatly reduced.

The invention relates to the technical field of safety, environmental protection, energy conservation and water conservation, in particular to a multi-stage serial / parallel gas-liquid micro-reaction system and a method for preparing ammonium / alkali by using the multi-stage serial / parallel gas-liquid micro-reaction system. The system comprises a feeding area, a low-temperature mixing area, a flow divider, a reaction area and a discharging area which are sequentially connected, the feeding area comprises a plurality of feeding pumps and a Venturi type gas-liquid reactor, and the feeding pumps are connected with the Venturi type gas-liquid reactor through feeding runners; the low-temperature mixing area comprises one or more micro-reactions and is used for receiving the raw materials in the feeding area and uniformly mixing the raw materials at low temperature; the flow divider is used for distributing the uniformly mixed raw materials in the low-temperature mixing area to the reaction area for reaction to obtain a reaction product; and the discharge area receives the reaction product. And the low-temperature mixing area adopts a micro-channel structure, so that after the raw materials pass through the micro-channel of the low-temperature mixing area, the gas content of the waste salt saturated brine is greatly increased, and bubbles are fine and dense, thereby improving the absorption efficiency of the waste salt saturated brine, being high in atom utilization rate and greatly reducing the energy loss in the separation process.

The invention provides a method for synthesizing 2, 5-furandicarboxylic acid through furoic acid and bicarbonate, and relates to the technical field of chemical synthesizing.The method for synthesizing 2, 5-furandicarboxylic acid through furoic acid and bicarbonate comprises the following steps that raw materials including furoic acid, basic metal salt and bicarbonate are taken and placed in water to react, drying and smashing are conducted after the reaction is completed, and the furoic acid is obtained; the bicarbonate comprises cesium bicarbonate, and the furoic acid solid mixture is obtained; taking the furoic acid solid mixture, placing the furoic acid solid mixture under the pressure of 0.8-2MPa, heating to 240-320 DEG C, and reacting for more than 15 hours to obtain 2, 5-furandicarboxylate; and dissolving the 2, 5-furandicarboxylic acid salt in water, and acidifying with hydrochloric acid to obtain the 2, 5-furandicarboxylic acid. The bicarbonate is heated and decomposed to generate carbon dioxide, the carbon dioxide produces a large number of pores in the furoic acid solid mixture, the gas-solid interface surface area is greatly increased, the gas-solid interface reaction is accelerated, the gas-liquid reaction efficiency is improved, and the energy consumption is reduced.

This invention provides a method for optimizing the uniform gas distribution of an airflow distributor in a biogas-liquid reactor, belonging to the technical field of biogas-liquid reactors. It solves the problem of the lack of a systematic optimization method in existing technologies. The method includes: estimating the critical velocity for seepage at the jet orifices; calculating and initially selecting the required number of jet orifices, the total length and number of all jet pipes, and initially selecting the airflow distributor structure; determining the frictional resistance coefficient f, momentum recovery coefficient k, and jet orifice flow coefficient c; analyzing the pressure drop distribution characteristics along the pipe length and the total pressure loss within the pipe; based on the analysis results, determining the airflow distributor parameter combination that meets the conditions; and outputting the final airflow distributor design parameters when the jet velocity and non-uniformity of each jet orifice simultaneously meet the preset seepage prevention conditions and non-uniformity requirements. This invention achieves optimized design of the airflow distributor structure.

The utility model relates to the technical field of liquid food concentration, in particular to liquid food gas hydrate concentration equipment which comprises a gas tank, a concentration tank and a concentrated solution collecting device. The concentration tank is used for placing a liquid material and providing a gas-liquid reaction space; the concentration tank is communicated with the gas tank through a gas delivery pipe, and a first-stage precooling device and a second-stage precooling device are sequentially arranged between the concentration tank and the gas tank; the first-stage pre-cooling device is used for pre-cooling gas flowing through the gas conveying pipe for the first time; the secondary precooling device is used for carrying out secondary precooling on the gas subjected to primary precooling; a three-stage pre-cooling material is arranged in the cavity of the concentration tank and is used for performing three-time pre-cooling on the material in the concentration tank; a stirring paddle is arranged in the concentration tank and is used for stirring materials in the concentration tank to promote gas-liquid reaction; the concentrated solution collecting device is connected to a discharge hole of the concentration tank and is used for collecting a concentrated solution finished product. The liquid food gas hydrate concentration equipment is good in gas pre-cooling effect, high in hydrate generation efficiency, good in finished product quality, energy-saving and environment-friendly.

The invention discloses a method for rapidly preparing a lithium carbonate nano material based on a sleeve membrane microreactor. The system mainly comprises a liquid delivery pump, a gas mass flow meter, a sleeve membrane microreactor, a water bath kettle, a back pressure valve and the like. The method comprises the following steps: firstly, respectively pumping a lithium hydroxide source solution and carbon dioxide into an inner tube and a tube gap of a sleeve membrane microreactor at a certain flow rate, and then carrying out gas-liquid reaction on the lithium hydroxide source solution and the carbon dioxide in the sleeve membrane microreactor to obtain the lithium carbonate nano material. The method has the advantages of being convenient to operate, short in reaction time (0.05-1.0 min) and the like, the particle size of the obtained lithium carbonate nano material is reduced to 58 nm, the particle size distribution is narrow (20-100 nm), and the morphology is regular.

The invention provides a method for preparing diborane. The method comprises the following steps: in an inert atmosphere, taking halogenated hydrocarbon as raw material gas, carrying out first-step reaction on the halogenated hydrocarbon and hydroboron dissolved in an ether solvent to generate an intermediate, and then dropwise adding organic acid, and carrying out second-step reaction on the organic acid and the obtained intermediate to generate diborane gas. The invention also provides a diborane preparation system used in the method. According to the method and the system, halogenated hydrocarbon, hydroboron and organic acid are used as raw materials, diborane is prepared through two-step reaction, gas-liquid reaction and liquid-liquid reaction are carried out step by step, gas-solid reaction is avoided, the reaction rate is high, and consumed time is short; meanwhile, the raw material halogenated hydrocarbon does not react with the ether solvent, the halogenated hydrocarbon and the ether solvent do not react to generate byproducts, impurities generated in the reaction process are hydrocarbon and hydrogen which are easy to separate, later-stage diborane purification is facilitated, separation and purification are simple, the cost is low, and the obtained diborane product is high in yield and purity.

This utility model discloses a gas-liquid mixing device and a gas-liquid reaction system, belonging to the field of chemical equipment technology. The gas-liquid mixing device includes a liquid phase distribution pipe and a gas phase distribution pipe. The liquid phase distribution pipe has at least one liquid inlet and several liquid outlets, each connected to a gas-liquid mixing pipe. The gas phase distribution pipe has at least one gas inlet and several gas outlets, each connected to a gas-liquid mixing pipe. The liquid outlets and gas-liquid mixing pipes are arranged in a one-to-one correspondence. The outlet end of the liquid outlet narrows radially inward to form a constricted section, which is inserted into the inlet of the gas-liquid mixing pipe, forming an annular gas inlet channel. This application has a simple structure, high reaction efficiency, and good reaction performance even in large reactors.