19 results about "Gas liquid reaction" patented technology

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 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 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 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.

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.

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.

The application discloses a kind of energy-saving self-cleaning flue zinc oxide kiln, belong to zinc oxide kiln field;Including temperature box, kiln body, exhaust pipe, exhaust pipe is equipped with protective tube, protective tube is equipped with purification mechanism, purification mechanism includes purification cylinder and with exhaust pipe fixed communication U-shaped gas duct, purification cylinder stores purification liquid, its liquid level height is lower than U-shaped gas duct top height;The top of purification cylinder is equipped with the scraping mechanism used in cooperation with U-shaped gas duct;When using, the kiln flue gas is introduced into the top sealed expansion cone bucket with exhaust pipe and U-shaped gas duct, the internal fan is rotated using its kinetic energy, and then the annular scraper is driven by the rotating rod to continuously scrape the inner wall of the spherical purification cylinder. This process prevents the clogging of dirt while ensuring the cleanliness of the gas-liquid reaction surface and the unobstructed passage, effectively avoiding downtime cleaning due to fouling, significantly improving the purification efficiency and reducing maintenance costs.

The application belongs to the technical field of low-temperature plasma nitrogen fixation, and particularly relates to a circulating plasma nitrogen fixation method and device of double dielectric barrier discharge, which comprises the following steps: introducing air into a spatial dielectric barrier discharge system to perform first discharge activation, generating plasma activation gas containing active nitrogen-oxygen species, introducing the gas into a liquid container to perform gas-liquid reaction in the form of bubbling with the liquid, and setting a surface dielectric barrier discharge area above the liquid to perform secondary discharge activation on residual gas. Through a gas circulation channel, the residual gas reenters the spatial dielectric barrier discharge system, realizing the circulation utilization of the same gas in the system through multiple discharges and multiple gas-liquid reactions. Through the above two-electrode discharge and gas reflux mechanism, the generation amount of active nitrogen-oxygen species and the conversion efficiency thereof into the liquid phase can be significantly improved, direct discharge of residual gas is reduced, the gas utilization rate is improved, and the application is suitable for the field of plasma nitrogen fixation.

This invention relates to the field of gas-liquid reactions, specifically to a method for gas-liquid two-phase contact reactions. The method is carried out in a shell-and-tube microbubble reactor, which includes a shell and a tube located within and penetrating the shell. The tube wall has holes for the limited passage of gaseous feedstock. The two ends of the tube penetrating the shell are a gaseous feedstock inlet and an unreacted gaseous feedstock outlet, respectively. The shell has a liquid feedstock inlet and a product outlet. The method includes: introducing gaseous feedstock into the tube of the shell-and-tube microbubble reactor, and entering the shell side through the holes in the tube wall to react with the introduced liquid feedstock. This invention, by employing a specially structured shell-and-tube microbubble reactor for gas-liquid two-phase reactions, greatly enhances the gas-liquid reaction process.

The present application relates to the technical field of adaptive parameter control processing, and specifically discloses an adaptive parameter control system for ozone deodorization, which continuously collects the ozone inlet concentration, ozone outlet concentration, oil phase feed flow, ozone inlet flow, pressure difference between the bottom and top of the reaction tower, and reaction temperature in the gas-liquid reaction tower; according to the collected data, the gas-liquid exchange activity value is estimated by alternately executing state recursion and observation correction; the activity estimation value is compared with the initial activity value to calculate the activity decay percentage, a feedforward compensation enable signal is generated when the threshold value is reached, the correction coefficient is calculated according to the current activity estimation value, target dissolution efficiency and current dissolution efficiency, the corrected ozone inlet flow set value is obtained and the flow is adjusted; the actual ozone inlet flow and newly collected ozone outlet concentration are fed back to the state estimation; the present application can avoid reverse regulation errors caused by mass transfer efficiency decay and stabilize the deodorization effect.

The present application relates to a kind of gas-liquid reaction kettle for preparing lithium carbonate, belong to gas-liquid reaction kettle preparation technical field.The reaction kettle includes kettle body, kettle cover and kettle bottom;In the reaction kettle, baffle is arranged close to the inner wall of kettle body;The upper end of baffle is fixedly connected with kettle cover, and the two side edges of baffle are fixedly connected with the inner wall of kettle body, to prevent gas leakage;The lower end of baffle is spaced apart from the inner wall of kettle bottom by a distance;At least one liquid inlet pipe and at least one gas inlet pipe are provided on the kettle cover, and a gas release valve is also provided on the kettle cover;The gas release valve is installed between the baffle and the kettle body close to the baffle.During the preparation of lithium carbonate, the gas inlet pipe is not blocked, and the utilization rate of carbon dioxide is high.

The present application belongs to the technical field of CO2 capture and gas-liquid reaction, and solves the problems of low efficiency, large equipment volume and ineffective heat recovery of the existing absorption technology. A CO2 absorption and heat recovery method based on centrifugal force field is disclosed. The flue gas containing CO2 is introduced into the tower in a rotating manner about the absorption tower axis to form an upward rotating gas flow. The absorption liquid is sprayed downward from the top of the absorption tower. During the downward process of the absorption liquid, it passes through the alternating arrangement of dynamic and static rotational flow layers. In the dynamic rotational flow layer, the absorption liquid collides with the rotating part and is torn into droplets or liquid membranes by centrifugal force. In the static rotational flow layer, the absorption liquid containing CO2 and the flue gas pass through the fixed guide vanes for deflection and separation. The purified flue gas is discharged from the top of the absorption tower, and the absorption liquid enriched with CO2 is discharged from the bottom of the absorption tower. The mass transfer efficiency is greatly improved, the equipment volume is significantly reduced, and the reaction heat and flue gas waste heat are absorbed in time.

The present application relates to the field of propylene carbonate synthesis, discloses a kind of microchannel array tube reactor and the method for preparing propylene carbonate.The microchannel array tube reactor includes outer tube, inner tube is arranged in outer tube, and the annular gap is formed between the inner tube and outer tube;Along the direction of flow, the inner tube of the microchannel array tube reactor includes alternately arranged venturi and gas-liquid reaction tube, forms flow field;Wherein, the gas-liquid reaction tube is provided with component, for the mixing reaction of fluid.The microchannel array tube reactor of the present application realizes the effective control of thermal risk, and the propylene carbonate is prepared by the microchannel array tube reactor, improves the selectivity of propylene carbonate, greatly improves reaction efficiency.

This invention provides a method for rapid degradation of antibiotics based on microdroplets, comprising: preparing an aqueous solution of tetracycline antibiotics; atomizing the antibiotic aqueous solution into microdroplets using a microdroplet generator; allowing the microdroplets to move in the air and rub against the air, subsequently falling onto a substrate surface under gravity; collecting the liquid that has fallen onto the substrate, thus completing the degradation of the tetracycline antibiotics; the degradation process does not use any added catalysts, activators, or strong oxidants. This invention achieves efficient and rapid degradation of antibiotics by converting the antibiotic aqueous solution into microdroplets and allowing the microdroplets to move in the air and fall onto a substrate of a specific material, coupling gas-liquid and solid-liquid reactions. The device of this invention is simple, low-cost, has a high degradation rate, operates under mild conditions, and has a certain degree of universality, requiring no complex pretreatment or post-treatment, and has potential application value in environmental pollution control.

This utility model discloses a continuously dehydrated ethanol synthesis reaction system, comprising: a gas-liquid reactor, wherein the lower part of the gas-liquid reactor is provided with a first air inlet for inputting fresh raw materials, and the upper part is provided with a first liquid inlet for inputting fresh raw materials; a first air outlet at the top of the gas-liquid reactor is connected to a second air inlet at the lower end of the gas-liquid reactor via a pipeline to form a gas-phase external circulation loop; a first liquid outlet at the bottom of the gas-liquid reactor is connected to the second liquid inlet at the upper part of the gas-liquid reactor via a dehydration device to form a liquid-phase external circulation loop; wherein the dehydration device includes at least two parallel adsorption columns, which allows the dehydration device to alternately perform water adsorption and water desorption operations. By using at least two parallel adsorption columns to alternately adsorb and desorb, continuous production operation can be achieved, and the adsorption / desorption cycle can be dynamically adjusted according to the reactor water outlet rate to optimize adsorption efficiency and improve reaction efficiency.

The utility model discloses a kind of leachate decoloring device of garbage transfer station, including buffer water tank and ozone generator, the buffer water tank is connected by pipeline to lift pump, the output end of the lift pump is fixedly connected membrane contact reactor, the ozone generator is connected by pipeline to membrane contact reactor, one end of the ozone tail gas discharged by membrane contact reactor is connected by pipeline to tail gas breaker;Membrane contact reactor is used as gas-liquid reaction carrier, so that ozone utilization efficiency is close to 100%, oxidation effect is good, while reducing operating cost;Membrane contact reactor can reduce the land area and height of ozone oxidation device, facilitate intensive arrangement.

This application provides a high-efficiency dissolved gas device and its application. The device includes a reaction vessel, a stirring motor, a solution circulation system, and a gas supply system. The stirring shaft of the stirring motor is used to mix the reactants in the reaction vessel. The solution circulation system includes a reflux pipe, a water pump, and a venturi tube. The water pump is connected to the reaction vessel through a pipe, and the outlet of the water pump is connected to the feed inlet at the top of the reaction vessel through the reflux pipe. The venturi tube is connected in series with the reflux pipe. The gas supply system includes a gas supply tank and a gas delivery pipe. The outlet of the gas delivery pipe is connected to the reflux pipe and the venturi tube through a tee fitting. The device described in this application uses a combination of a venturi tube and a three-layer stirring impeller to achieve dual bubble refinement. Combined with a closed-loop solution circulation system and a bidirectional adaptive control system of "dispersion and integration," the various systems work together to quickly oxygenate water and solid-containing slurry, improve gas utilization rate by more than 10% compared to traditional devices, shorten gas-liquid reaction time, and optimize reaction efficiency.

The utility model relates to the technical field of chemical production discloses a kind of gas-liquid reaction equipment.The gas-liquid reaction equipment includes reaction main body, ultrasonic emission component and circulating component, and reaction main body is provided with reaction cavity;Ultrasonic emission component is arranged in reaction main body and is located in reaction cavity, and ultrasonic emission component is configured to generate ultrasonic wave, to enable cavitation effect to occur in reaction cavity;Circulating component is arranged in reaction main body, and circulating component is provided with circulating channel communicated with reaction cavity, and circulating component is used to provide circulating power for liquid entering circulating channel, to enable liquid in reaction cavity to flow to circulating channel, and flow back to reaction cavity under the power action of circulating component.The gas-liquid reaction equipment improves the efficiency of gas-liquid reaction, reduces the energy consumption cost of gas-liquid reaction and the failure rate of gas-liquid reaction equipment, and can also be applicable to the case that gas-liquid reaction or reaction process has solid particles in liquid.