8results about How to "Adequate mass transfer" patented technology

The utility model belongs to the technical field of waste gas treatment, and particularly relates to treatment equipment for rectifying VOCs (volatile organic compounds) organic waste gas, which comprises an anti-blocking mechanism and is characterized in that the anti-blocking mechanism comprises a plurality of spraying and absorbing inner cavities, and a plurality of fixing plates in an annular array are fixedly connected to opposite surfaces of the spraying and absorbing inner cavities; the anti-blocking mechanism is matched with the transmission mechanism, so that the problem of impurity accumulation of the anti-blocking sieve plate can be solved, and pollutants are combined with waste gas absorption liquid in the process of spraying rectified VOCs organic waste gas by the spraying pipeline; according to the anti-blocking device, the anti-blocking plate is arranged, so that viscous impurities such as high-boiling-point organic matters and polymers and scaling substances such as salt crystals in waste gas enable insoluble substances to be easily adhered and easily and gradually accumulated on the surface of the anti-blocking plate, normal contact and mass transfer of gas and liquid on the anti-blocking plate can be hindered due to the impurities, and the absorption efficiency is reduced; and the cleaning brush bristles capable of circularly moving can regularly clean the surface of the anti-blocking plate, so that the problem that impurities are accumulated on the surface of the tower plate is effectively solved.

The utility model relates to the field of lubricating oil processing, in particular to an emulsion type lubricating oil heating reaction device. The technical problems that in the lubricating oil heating reaction process, due to the fact that stirring is not uniform enough, time is wasted, and the heating function is not achieved, lubricating oil is prone to semi-solidification under the low-temperature condition, and the mixing efficiency of the lubricating oil is reduced are solved. According to the technical scheme, the emulsified lubricating oil heating reaction device comprises a fixed bottom plate and further comprises a heating assembly, a mixing assembly and an exhaust assembly. By arranging the heating assembly, sufficient heat can be provided to meet the reaction requirement, then reaction materials can be fully mixed and transferred through the mixing assembly and can be uniformly heated, gas generated by heating reaction can be conveniently exhausted through the exhaust assembly, the phenomenon that the gas pressure is too large is avoided, and the service life of the reaction device is prolonged. Gas generated after heating reaction of lubricating oil can be purified and filtered, and pollution to the environment is avoided.

The invention discloses a centimeter-level continuous flow reaction device which comprises at least one liquid storage tank, a gas cylinder, a T-shaped mixer and a micro-reactor, inlets of the liquid storage tank and the gas cylinder are communicated with two ends of the T-shaped mixer respectively, the other end of the T-shaped mixer is connected with the micro-reactor, the micro-mixer is arranged between the T-shaped mixer and the micro-reactor, and the T-shaped mixer is connected with the micro-reactor. The micro-mixer is filled at an inlet of the micro-reactor, the micro-mixer is provided with a pore channel communicated with a channel of the micro-reactor, and a gas-liquid mixture generates bubbles after flowing through the micro-mixer. The invention further discloses an application of the device in a gas-liquid two-phase participated reaction in continuous flow, in particular an application of catalyzing cyclohexanol to prepare epsilon-caprolactone by using ADH1-BVMO whole-cell sap. The invention provides a universal, simple and convenient device and method for improving the oxygen transmission efficiency for the biological catalysis aerobic reaction, and provides actual examples and references for the biological catalysis aerobic reaction in continuous flow.

The invention discloses a porous carbon / vanadium nitride composite electrode material and a preparation method and application thereof, and belongs to the technical field of electrode materials. The preparation method of the porous carbon / vanadium nitride composite electrode material comprises the following steps: taking an amino-containing interpenetrating network polymer as a precursor, removing moisture, and carrying out impregnation complexation with vanadium oxide sol to obtain an impregnated compound after impregnation is completed; and performing primary pyrolysis on the impregnated compound at the temperature of 280-350 DEG C in a protective atmosphere, and then performing secondary pyrolysis at the temperature of 700-900 DEG C to prepare the porous carbon / vanadium nitride composite electrode material. During preparation, a reducing atmosphere does not need to be introduced, the preparation environment is safe, and the prepared porous carbon / vanadium nitride composite electrode material is excellent in cycle life.

The invention discloses a chlorhexidine gluconate solution and a preparation method thereof. The method comprises the following steps: dispersing chlorhexidine free alkali in purified water, introducing carbon dioxide, pressurizing and carbonizing, and constructing a homogeneous or quasi-homogeneous reaction system; adding gluconic acid-delta-lactone under the condition that the system pressure is not lower than 0.30 MPa, maintaining the pressure, carrying out constant-pressure stirring reaction, and inhibiting carbonic acid decomposition by utilizing back pressure so as to match lactone hydrolysis kinetics; and after the reaction is finished, carrying out gradient pressure relief, vacuum degassing and filtering. According to the present invention, the gas-liquid-solid three-phase coupling and the variable pressure-pressure maintaining delayed release process are adopted, such that the low-temperature total synthesis of chlorhexidine is achieved, the generation of parachloroaniline impurities and the discoloration of the product caused by the high temperature are effectively avoided, and the technical problems of incomplete reaction and easy muddy reaction at the low temperature are solved. The process has the advantages of no residue, high product purity and good safety.

The utility model relates to a device for stripping, separating and treating semi-coke wastewater, which comprises a cylindrical vertical stripping tower, the stripping tower comprises a gas phase outlet, a tower plate area and a kettle liquid outlet from top to bottom, the upper part of the tower plate area is provided with a feeding hole for inputting semi-coke wastewater containing an extracting agent, the bottom of the stripping tower is provided with a reboiler, and the kettle liquid outlet is communicated with the reboiler. The kettle liquid outlet is used for discharging the separated wastewater; the tower plate area comprises a plurality of horizontally arranged tower plate units, each tower plate unit comprises a tower plate and a gas-liquid exchange area, a plurality of vent holes are uniformly formed in the tower plate, the gas-liquid exchange area is cylindrical, the bottom of the side wall of the gas-liquid exchange area is fixed to the edge of the tower plate, the top of the gas-liquid exchange area is open, and steam of the tower plate units is allowed to be discharged upwards; the gas-liquid exchange area comprises a filler area, a separation mesh and a liquid area from top to bottom, and the filler area is filled with filler.

The application relates to a high-concentration wastewater treatment device and method containing free ammonia and ammonium salt, and relates to the technical field of wastewater treatment. The method comprises the following steps: feeding wastewater into an MVR evaporation crystallization system for preheating, feeding the preheated wastewater into a forced circulation heater for heating to obtain a feed liquid with high solid content, and feeding the feed liquid with qualified solid content into a crystallizer for crystallization; feeding ammonia-containing condensate water into the top of a rectifying tower, performing vapor-liquid exchange heat transfer on the ammonia-containing condensate water in the rectifying tower; rectifying the ammonia-containing condensate water, and discharging the feed liquid in the rectifying tower through a kettle liquid pump when the ammonia content of the ammonia-containing condensate water is less than a certain value. When the feed liquid in the rectifying tower is discharged, only a trace amount of ammonia is contained, and the ammonia-containing condensate water is less harmful when recycled.

The application discloses a kind of microreactor for carbon dioxide conversion in air, including reaction cavity, and reaction cavity shell is made of light transmission glass;Multiple sets of catalyst carrier assemblies are equipped in reaction cavity cavity, along material flow direction, adjacent catalyst carrier assemblies are staggered in turn and form baffle passage;Each set of catalyst carrier assembly is composed of transversely arranged catalyst carrier and longitudinally arranged catalyst carrier;Catalyst carrier is foam ceramic carrier, and catalyst is loaded on carrier, and foam ceramic carrier is porous structure.The application limits reactor, can realize CO2 on foam ceramic carrier in reactor inside sufficient mass transfer and heat transfer, and transversely and longitudinally arranged carrier can increase the residence time of CO2 in foam ceramic pore, and transversely and longitudinally arranged carrier can expose more active sites of catalyst, so that the catalytic efficiency of entire reaction is improved, realizes CO2 100% conversion rate, and also can realize 100% conversion of CO2 in air.