341 results about "Mass transfer" patented technology

The invention relates to a combined truncated cone type gas-liquid redistributor. The combined truncated cone type gas-liquid redistributor comprises a conical wall and a connecting bottom plate. Theconnecting bottom plate is fixedly arranged at the bottom of the conical wall, and is provided with a plurality of strip-shaped folding plates; the strip-shaped folding plates are of inverted-V structures; a plurality of air holes are formed at equal intervals in both sides of each strip-shaped folding plate; a stop plate is fixedly arranged on the lateral side of the strip-shaped folding plate above each air hole, and an angle is formed between each stop plate and the lateral side of the corresponding strip-shaped folding plate; the angles between the stop plates and the lateral sides of thestrip-shaped folding plates are proportional to the distances from the stop plates to the center of the connecting bottom plate. The combined truncated cone type gas-liquid redistributor has the advantages that the strip-shaped folding plates and the stop plates are adopted to achieve a good distribution effect of washing liquid, and accordingly, the area and time of contact between gases and liquid can be increased and prolonged; the included angles between the stop plates and the lateral sides of the strip-shaped folding plates are proportional to the distances from the stop plates to the center of the connecting bottom plate, so that the differences among the flowing speeds of gases from each air hole are small, the gas distribution effect is good, poor gas-liquid distribution in a packing tower is reduced, and the gas-liquid mass transfer efficiency is improved.

The application belongs to the field of chemical mass and heat transfer enhancement technology, and discloses a macro-quantity structured micro-scale vortex packing structure, method and application. The packing structure is a packing with a multi-scale microstructure on the surface. The microstructure causes boundary layer separation and vortex shedding when fluid flows through, generates stable micro-scale vortexes at the microstructure, and forms a macro-distributed vortex group in the packing. The vortex can cut the boundary layer, stretch and fold the fluid micro-element, and promote the periodic update of the interface, thereby improving the gas-liquid mass and heat transfer efficiency. The application significantly reduces the pressure drop. Under the same operating conditions, the pressure drop of the packing structure of the application is reduced by more than 50% compared with the conventional packing, and the pressure drop increment caused by the vortex structure is less than 15%, realizing the synergistic optimization of mass transfer enhancement and low pressure drop.

The application discloses a self-luminous replaceable plate type photocatalytic experimental device and method with sound-light coupling reinforcement, relates to the technical field of photocatalysis, and comprises a self-luminous catalytic substrate, a reaction tank integrated with an ultrasonic transducer, an online monitoring unit and an external pumping circulation system; the self-luminous catalytic substrate is made of a semi-transparent optical fiber material and has an optical fiber guiding structure inside, can concentrate and guide external light to the inside of the substrate and uniformly transmit the light out of the surface, and serves as not only a support carrier of a catalyst but also an efficient in-situ surface light source; the ultrasonic cavitation reinforces the liquid-solid interface mass transfer and peels off a toxic layer in real time; the online monitoring unit acquires reaction efficiency data in real time and accurately guides physical replacement of the substrate according to a kinetic decay curve; the application realizes full-process zero-loss transmission of light energy and orders-of-magnitude improvement of mass transfer efficiency, solves the problem of low photocatalytic efficiency caused by limited light transmission and mass transfer bottleneck, and is suitable for evaluation of high-performance catalytic materials and research on deep treatment of high-viscosity / high-turbidity systems.

The application relates to the technical field of refining of acyclic compounds, and discloses a gradient temperature control method for a n-butyl acrylate refining process, which comprises the following steps: adding a polymerization inhibitor component to a crude product, obtaining a light-removing material through preliminary rectification; adjusting the pressure of a heated area and introducing oxygen-containing micro-bubble flow to maintain the free radical quenching activity in the liquid phase boundary layer; and based on the current increment of a wiped film driving current, adjusting the shear strength in real time, physically destroying the fluid viscous structure to lock the liquid film thickness distribution, solving the bottleneck that the polymerization inhibition fails due to the dissolution oxygen resolution under an extremely low pressure environment, realizing deep coupling of chemical inhibition and phase change mass transfer through the synergy of physical disturbance generated by micro-bubble expansion and rupture and an in-situ compensation mechanism of oxygen molecules, eliminating the risk of coking on a heated surface from a bottom logic, and guaranteeing the chemical stability of a monomer recovery process.

The application discloses a novel high-efficiency large-flux three-dimensional mass transfer tray and relates to the technical field of mass transfer separation towers, comprising a horizontal plate and a three-dimensional cap, wherein a plurality of air holes are formed in the lower part of each cap as gas inlets; the three-dimensional cap is divided into upper and lower two parts of a lifting section and a shunt section; the bottom of the wall surface of the lifting section is provided with a liquid hole as a channel for liquid to enter the three-dimensional cap; and the shunt section is provided with a stepped baffle structure. The novel high-efficiency large-flux three-dimensional mass transfer tray can strengthen gas-liquid mixing and effectively control entrainment of mist, and will help to simultaneously realize high efficiency and large flux of the plate tower.

The application provides a multifunctional continuous flow heterogeneous or homogeneous catalytic series reaction device, which comprises a raw material gas supply pipeline, a first gas purification device, a first constant-temperature bubbling gas redispersion device, a second constant-temperature bubbling gas redispersion device, a light-concentrating photothermal reactor, a second gas purification device, a reaction gas velocity cooling device, a gas-liquid separation device and a gas collection device which are sequentially connected in pipeline along the fluid flow direction, and a fluid directional control system. Through the composite heat-resistant cavity structure and the light-heat-flow collaborative design, the device realizes the tolerance to extreme heat environment and the elimination of local hot spots, and the service life is improved by more than 3 times; through the three-stage purification process and the multi-parameter independent control system (temperature / pressure / flow rate / light intensity), the stability of the oxygen-sensitive reaction is ensured, and the reaction selectivity is more than 95%. The device solves the engineering scale-up problem in the light-concentrating catalysis field, the mass transfer efficiency is improved by 5-8 times compared with the batch system, and provides an expandable technical platform for the continuous production of solar fuels.

The present application relates to the technical field of microalgae carbon fixation, and specifically discloses a microalgae environmental adaptation carbon fixation method based on spiral disturbance flow field enhancement, which comprises the following steps: constructing a column type photobioreactor and setting a spiral disturbance plate, selecting high-efficiency carbon fixation Chlorella sp. which is resistant to NO X , SO X , pre-treating and inoculating, precisely regulating environmental parameters such as light and pH, monitoring the carbon fixation process in real time and regulating abnormally, and realizing cyclic operation by adopting semi-continuous culture. The present application enhances gas-liquid mass transfer by spiral disturbance, combines dynamic adaptation and regulation of multiple environmental parameters, improves CO₂ emission reduction rate and microalgae growth efficiency, optimizes reactor mass transfer characteristics, reduces energy consumption, realizes the collaborative treatment of multiple pollutants, and provides standardized technical support for the industrialization of microalgae carbon fixation.

The application belongs to the field of microfluidic chemical analysis and separation technology, and particularly relates to a high-throughput full-automatic liquid-liquid countercurrent microextraction system, which comprises a plurality of countercurrent microextraction combinations, each of which comprises a suction filtration unit, a countercurrent microextraction unit and a fluid power unit; the plurality of countercurrent microextraction units realize multi-channel synchronous extraction, the suction filtration unit integrates filtration and negative pressure circulation to complete sample pretreatment, and the fluid power unit is composed of a suction pump, a plurality of peristaltic pumps and a plurality of capillary connectors to form a full-automatic flow path, so that the extraction process is unattended throughout the whole process. The application realizes mass transfer enhancement through the reverse staggered flow of the heavy phase downward and the light phase dropwise upward in the extraction tube, has the advantages of high-throughput, high automation, high extraction efficiency, compact structure, good reproducibility and the like, and is suitable for efficient enrichment and separation of trace components in complex samples such as food, environment, medicine and biological detection.

This utility model discloses a conical top-floating valve, comprising a top plate, with inclined surrounding plates arranged around the top plate. The upper end of each inclined surrounding plate is fixedly connected to the top plate, and the two sides of each inclined surrounding plate are fixedly connected to adjacent inclined surrounding plates. The lower end of each inclined surrounding plate has a wavy edge, and a support rod is fixedly connected to the lower end of the connection between the inclined surrounding plate and the adjacent inclined surrounding plate. The conical top-floating valve of this utility model, with its top plate and inclined surrounding plates, increases the gas-liquid contact area and improves heat and mass transfer efficiency. The floating design of the conical top-floating valve effectively reduces the upward steam velocity and minimizes entrainment. The wavy edge effectively prevents the valve from sticking to the tray, improving its anti-fouling ability.

The application relates to the technical field of resource utilization of construction waste, and discloses a construction waste and waste cement block xylene impurity removal process. In the process, waste cement blocks and waste concrete blocks in the construction waste are subjected to sorting, crushing and screening to obtain recycled aggregates, the aggregates are subjected to pre-washing with clean water to remove loose impurities, and then are subjected to xylene treatment liquid soaking under specific solid-liquid ratio and temperature conditions, and are subjected to ultrasonic oscillation or mechanical stirring to strengthen mass transfer; after treatment, the aggregates are subjected to solid-liquid separation, distillation and purification, and then are recycled, and the aggregates are subjected to washing and drying to obtain high-quality recycled aggregates. The application has excellent impurity removal effect, does not damage the original structure of the aggregates, can realize recycling of the solvent, does not cause pollution of acidic waste water, has strong process adaptability, and can significantly reduce the water absorption rate and crushing index of the treated recycled aggregates, so that the treated recycled aggregates can meet the preparation requirements of medium and high-grade concrete, and the application realizes high-value and green resource utilization of the construction waste.

The present invention relates to a method for producing nitrile by controlling the input pressure of a spraying liquid and a production apparatus. The method can atomize the spraying liquid, increase the contact area with ammonia, and improve the mass transfer efficiency. The method for producing nitrile includes a step of producing a reaction product containing nitrile by subjecting a hydrocarbon raw material to an ammoxidation reaction (referred to as a reaction step), and a step of spraying a spraying liquid to the reaction product by a spraying device to cool the reaction product (referred to as a cooling step), wherein the spraying device includes a spraying liquid inlet, a first spraying pipe in fluid communication with the spraying liquid inlet, a plurality of second spraying pipes in fluid communication with the first spraying pipe and extending to both sides of the first spraying pipe perpendicularly thereto, a plurality of third spraying pipes in fluid communication with the second spraying pipes and extending to both sides of the second spraying pipes perpendicularly thereto, and a nozzle at the end of the third spraying pipes and in fluid communication therewith, and wherein the input pressure of the spraying liquid of the spraying liquid inlet is controlled to 0.06-1.00 MPaG in the cooling step.

This utility model discloses a low-temperature concentration device for a traditional Chinese medicine probiotic hangover remedy, belonging to the field of pharmaceutical engineering technology. The key technical features include a horizontal concentration tank with end caps bolted to both sides. A reciprocating mixing mechanism is movably connected to the inner side of the horizontal concentration tank, and a flow guiding mechanism is movably connected to the outer side of the reciprocating mixing mechanism. The main shaft can be driven to rotate in both directions by servo motors on both sides, breaking the regular vortex formed by unidirectional stirring within the horizontal concentration tank. This irregular mixing promotes the flow of the liquid and heat and mass transfer, suppressing local temperature differences and sedimentation. It ensures the stability of heat-sensitive components and enhances the homogenization of the solid and liquid phases through dynamic switching of the rotation direction. This effectively solves the problems of regular vortex formation, low mixing efficiency, and insufficient uniformity caused by unidirectional stirring in traditional low-temperature concentration devices, achieving a dual improvement in concentration efficiency and product quality.

The application discloses a small laboratory extraction column, comprising: a support frame; a light phase tank fixedly connected to the upper middle part of the support frame, a heavy phase tank fixedly connected to the lower middle part of the support frame, an extraction column with one end communicated with the light phase tank and the other end communicated with the heavy phase tank, a paddle assembly slidingly connected to the inner wall of the extraction column, the paddle assembly is used for uniformly dispersing the mixture to better carry out mass transfer extraction; a driving assembly installed on the top of the support frame and driving the paddle assembly to reciprocate up and down along the inner wall of the extraction column. The utility model patent solves the problem of low efficiency of using a separatory funnel, limited contact time and contact area of two phases, and poor extraction effect in the prior art.

The application discloses a kind of without heating regeneration carbon dioxide normal temperature removal process and system, belong to natural gas decarburization field;A kind of without heating regeneration carbon dioxide normal temperature removal process, comprising the following steps:S1, raw material gas pretreatment;S2, CO2 absorption;S3, rich liquid flash evaporation;S4, lean liquid regeneration;S5, material circulation;The application is effectively solved by the absorption part of being set, the pain point that edge filler reaction is not sufficient, the low life of central filler;Can shake and scatter adhesion filler ball, clean filter hole impurity, avoid filter hole blockage, further improve gas-liquid mass transfer efficiency;Can buffer knock impact force, prevent that filler plate is damaged;Can effectively protect electric telescopic rod, and maintenance is convenient, need not to disassemble whole tower body, shorten maintenance cycle, guarantee production continuity;Can avoid liquid flooding, channeling phenomenon.

This invention relates to the field of air pollution control technology, and in particular provides a microbial treatment system for high-concentration malodorous air pollution, including a purification tower. The purification tower has an inlet pipe at its bottom and an outlet pipe at its top. Inside the purification tower, from top to bottom, are arranged a microbial filling chamber, a filter plate, and a spray device. The bottom end of a rotating shaft extends to the bottom of the purification tower and is connected to a power unit. A gas collection cylinder is installed at the top of the rotating shaft. The gas collection cylinder passes upward through the filter plate and extends into the microbial filling chamber, and is fixedly connected to a rotating hood. An air inlet is provided along the axial direction of the section of the gas collection cylinder outside the bottom of the microbial filling chamber. Microbial material can fall evenly and continuously into the waste gas cavity, fully contacting the high-concentration malodorous waste gas, improving mass transfer efficiency and microbial degradation efficiency, and meeting the treatment needs of high-concentration malodorous pollution.

The application relates to an energy efficiency optimization method, medium and system of a capacitive deionization system, which is suitable for energy-saving operation regulation and control of the capacitive deionization system. The method firstly constructs a multi-physical field simulation model coupling electric field, fluid and mass transfer, simulates an electric loss distribution curve in a deionization process, and determines preliminary adsorption time length parameters according to the electric loss distribution curve. Then, the adsorption time length parameters and preliminary desorption time length parameters that are optimal in energy efficiency are calculated and corrected by comprehensively considering factors such as auxiliary system power consumption and pumping energy consumption, so that adaptive adjustment of system cycle operation parameters under different working conditions is realized. Finally, under the premise of ensuring electrode full regeneration, the water inflow speed and desorption time length parameters in the desorption stage are adjusted based on the simulation model, the water recovery rate and energy recovery efficiency of the system are improved, and the overall energy consumption is reduced. The application realizes intelligent operation control of the electric adsorption process under the condition of multiple working conditions, and has high engineering adaptability and popularization value.

The application relates to the technical field of environmental protection industry, and discloses a waste gas spray treatment equipment based on micro-nano aeration cooperation and ozone catalysis, which comprises an ozone mixer, a gas inlet of the ozone mixer is used for connecting waste gas, a gas outlet of the ozone mixer is connected with a first spray tower through a pipeline, a gas outlet of the first spray tower is connected with a second spray tower through a pipeline, a gas outlet of the second spray tower is connected with a fan three through a pipeline, and an exhaust cylinder is connected with the gas outlet end of the fan three; the ozone mixer is also connected with an ozone generating system, and a fan one is connected between the ozone generating system and the ozone mixer. Through liquid phase suspension catalysis and micro-nano aeration cooperation technology, the problems of easy blockage of traditional fixed bed catalysts and uneven gas-liquid mass transfer are solved, the oxidation rate of organic matters and the ozone utilization rate are improved, and through a multiple intelligent feedback regulation mechanism, the waste gas can be discharged up to the standard and no secondary pollution is caused.

This utility model discloses a CFB semi-dry desulfurization tower, including a tower body and a flue gas inlet and outlet disposed on the tower body. The tower body, from top to bottom, includes a vertical section, an inverted cone section, and a Venturi section. Three sets of jet pipes are evenly distributed circumferentially on the outer side of the bottom of the inverted cone section. Part of the flue gas in the flue gas inlet is guided through the jet pipes and tangentially injected into the inner cavity of the inverted cone section above the Venturi section, merging with the flue gas entering the inverted cone section from the Venturi section to form a spiral ascent. By guiding part of the flue gas in the flue gas inlet to the three sets of jet pipes, the flue gas is tangentially injected into the inverted cone section above the Venturi section and merges with the flue gas that has accelerated through the Venturi section into the inverted cone section, forming a spiral ascent in the inverted cone section. This enhances the mass transfer and absorption reaction between the flue gas and the desulfurizing agent, improves desulfurization efficiency, reduces the calcium-sulfur ratio in the desulfurization tower, thereby enabling more efficient utilization of the desulfurizing agent, reducing consumption, and lowering the operating cost of the desulfurization system.

The utility model provides a kind of oblique membrane plate's desulfurization tower, including desulfurization tower body, circulating spray mechanism, scale removal spray mechanism and baffle;Flue gas enters desulfurization tower body inside by smoke inlet pipe, and enters into desulfurization passage, and contact with the desulfurization lye that circulating spray mechanism sprays realizes desulfurization, and the contact path and contact time of flue gas and desulfurization lye are increased in the desulfurization passage of baffle composition, force flue gas to generate turbulent flow, improve gas-liquid mass transfer efficiency, to improve desulfurization efficiency, and by the spray head of last setting direct alignment possibly formed in baffle below " dry area ", carry out supplementary spray, help to eliminate desulfurization blind area, improve overall desulfurization uniformity and efficiency, by switching three-way valve, spray head can also spray scale removal agent on baffle, can effectively flush scale face on baffle, avoid the influence of airflow circulation of brushing baffle scale.

The utility model discloses a kind of magnetic drive grid ring microchannel liquid mixing device, it relates to a kind of liquid mixing device.The utility model uses modularization magnetic drive, pre-dispersion and shearing breakage are carried out to premixed liquid by grid structure, three-stage Archimedes spiral microchannel design is adopted in mixed channel, wherein inlet passage layer is configured annular average arrangement rectangular cross section microchannel, secondary mixing passage layer adopts spiral channel from circle center to outer periphery, tertiary mixing passage layer is the spiral channel of circumferential flow to circle center, through the synergistic effect of eddy current and shear force induced by spiral gradually expanding structure, realize two liquid efficient mass transfer.The utility model has the advantages of modularization easy disassembly replacement and active mixing, through the synergistic effect of magnetic drive multistage mixing unit, significantly improve the dispersion uniformity and mixing efficiency of material in microchannel, suitable for fine chemical and biological pharmaceutical technology field etc.

The utility model relates to gas -liquid heat and mass transfer equipment technical field especially relates to a corrugated sheet and novel filling, including the air inlet area, mixed air area, heat exchange area and air outlet area that set gradually along the air flow direction, mixed air area is located between the air inlet area and heat exchange area for the even distribution of the air volume that enters, the heat exchange area forms the continuous zigzag corrugation that penetrates the upper and lower ends of sheet, for guiding the spray water to flow from top to bottom, the passage of air outlet area is structured as the circular arc curve structure that arcs upwards along the air outlet direction. This scheme has the advantages of improving the air distribution uniformity, reducing the outlet floating water, avoiding the installation error and optimizing the gas -liquid contact efficiency.

This invention discloses a method and system for detecting the strongest Rayleigh acoustic current in immobilized microdroplets. Specifically, it involves: calculating the acoustic current suppression coefficient through experimental quantitative testing to establish a quantitative mapping relationship between acoustic current intensity and droplet contact angle; utilizing an electrowetting structure composed of interdigitated electrodes, a dielectric layer, and a hydrophobic layer to actively regulate the droplet contact angle through an applied voltage; and dynamically adjusting the applied voltage in real time by monitoring the droplet vibration amplitude, particle velocity, and contact angle through a collaborative control program to maintain the acoustic current intensity at its strongest. This invention also provides a detection system for implementing the above method, including an indium tin oxide transparent interdigitated electrode substrate, a lead zirconate titanate piezoelectric transducer, a laser Doppler vibrometer, a microscope, and a collaborative control module. This invention can maximize and dynamically maintain the Rayleigh acoustic current intensity in immobilized microdroplets, significantly accelerating the solid-liquid interface mass transfer process, and is applicable to biochemical analysis fields such as rapid immunoassay and biological particle mixing.

This utility model discloses a wall-scraping stirring device for solid-liquid extraction, including a stirring tank. A driving mechanism is mounted on the upper surface of the stirring tank, and a stirring shaft connected to the driving mechanism is rotatably mounted inside the tank. Several sets of main stirring blades are evenly arranged on the stirring shaft. A groove is formed on the side surface of each main stirring blade, and a T-shaped movable plate is slidably mounted within the groove. A scraper is mounted on the side surface of the movable plate, contacting the inner wall of the stirring tank. By setting the movable plate and scraper on the main stirring blades, the hard deposit layer formed on the inner wall of the stirring tank is scraped away while stirring, preventing deposit scaling and maintaining an effective mass transfer area. The staggered arrangement of the main stirring blades generates an axial-radial composite flow, eliminating low-speed dead zones. While scraping the wall, the scraper rapidly pushes the high-concentration slurry on the wall surface to the mainstream zone, disrupting the boundary layer concentration gradient and preventing emulsification caused by local concentration gradient imbalance, thus improving the rare earth recovery rate.

This application belongs to the field of metallurgical technology, and particularly relates to a vacuum induction deep desulfurization process for high-temperature alloys. Insufficient contact between the melt and the desulfurizing agent, poor reaction kinetics, and difficulty in effectively separating desulfurization products are significant factors contributing to the difficulty in deep desulfurization of high-temperature alloys during vacuum induction melting. Existing technologies use calcium-magnesium-based desulfurizing agents or calcium oxide crucibles for in-situ desulfurization, which suffers from low desulfurization efficiency due to high-temperature volatilization, short crucible life, and limited mass transfer. The embodiments of this application overcome the technical bottleneck of diffusion-limited mass transfer in slag-metal reactions under vacuum by employing a porous desulfurizing agent combined with electromagnetic stirring to drive the high-temperature alloy melt through the porous desulfurizing agent, achieving a simultaneous improvement in desulfurization efficiency and depth.

The application discloses a flow field structure design method for a solid oxide electrolytic cell, and belongs to the technical field of solid oxide electrolytic cells; the method is based on the establishment of an electrolytic cell flow field topology domain, fluid flow, heat transfer and mass transfer processes are coupled modeling, the flow field structure is optimized and designed through the construction of multi-physical field constraint conditions, so that the flow field structure suitable for high-temperature electrolysis working conditions is obtained; the method takes improving the concentration of reaction gas and improving the temperature distribution as the design target, and the volume fraction of the flow channel and the pressure drop of the inlet and outlet are constrained, so that the obtained flow field structure can consider the mass transfer performance, the heat management performance and the operation stability; the flow field structure obtained by the method can effectively reduce the internal temperature gradient of the electrolytic cell, improve the gas distribution uniformity of the reaction area, and thus improve the current density and the operation stability of the electrolytic cell.

The present application relates to the technical field of bio-fermentation equipment, and particularly relates to a multi-stage stirring type fermentation tank. The multi-stage stirring type fermentation tank comprises a tank body, a hollow first stirring shaft coaxially arranged and a second stirring shaft sleeved in the first stirring shaft, a first motor and a second motor for driving the two shafts to independently rotate, a shaft flow type first stirrer connected to the first stirring shaft, a radial flow type second stirrer connected to the lower end of the second stirring shaft, a central flow guide cylinder fixed in the tank body, and a static ring-shaped gas distributor installed at the opening below the central flow guide cylinder. The central flow guide cylinder covers the shaft flow type stirrer, and the radial flow type stirrer is located at the opening below the central flow guide cylinder. The bottom of the second stirring shaft is provided with an elastic scraper rod which can scrape the wall. The outer wall of the tank body is provided with a spiral half-pipe jacket heat exchange device. The present application realizes the synergistic effect of macroscopic mixing and microscopic mass transfer through differential driving of the double shafts and the combined stirrer, optimizes the stirring conditions in different fermentation stages, and significantly improves the oxygen dissolution efficiency and the heat transfer effect.