62results about How to "Strong mass transfer ability" patented technology

The invention discloses a process for preparing carbon-coated phosphate cathode material of a lithium ion battery through utilizing supercritical fluid, which comprises placing to-be-coated phosphate anode active material in a high-pressure stirred tank reactor, pumping supercritical fluid which dissolves with polymer solution into the reactor through a high-pressure pump, fully stirring under the condition of preset temperature and pressure to fully moisten the polymer solution and anode active substances, then fast spraying the mixed paste of supercritical fluid and active substances in an expansion separating chamber through nozzles, thereby making polymer solutes reach highly super-saturation state in a shorter time and grow on the surface of coated substances to form an even coating layer, and then conducting with high-temperature treatment under the non-oxidizing atmosphere to split off organic polymer material to form an even carbon-coated layer on the surface of the phosphate anode material.

The invention relates to a gas diffusion layer as well as a preparation method and application thereof. The gas diffusion layer comprises a supporting layer, and a composite carbon material diffusionlayer and a microporous layer which are sequentially arranged on the surface of the supporting layer; the supporting layer is made of a porous material, and the composite carbon material diffusion layer comprises carbon nanotubes and carbon fibers. The support layer provided by the invention has high mechanical strength, and can be used as both a current collector and a diffusion layer frame substrate; the carbon nanotubes and the carbon fibers are mixed, the carbon fibers serve as a base frame, the carbon nanotubes serve as filler of the frame, the requirement for high air permeability of thegas diffusion layer is met, and high mechanical strength is achieved; the microporous layer can fill up pores with different sizes of the diffusion layer, and can also slow down the unevenness phenomenon of the diffusion layer, so that redistribution of water and reaction gas in a flow field and the catalyst layer is realized, the conductivity is increased, and the service life of a battery is prolonged.

The invention discloses an embedded immobilization microbial carrier, a preparation method thereof and a sewage treatment method. The preparation method of the embedded immobilization microbial carrier comprises the following steps: adding polyvinyl alcohol and sodium alginate into water, heating for fully dissolving the polyvinyl alcohol and sodium alginate to obtain a first gel solution, and cooling the first gel solution to 20 to 40 DEG C; providing a bacteria solution and a gas-producing compound solution, wherein the gas-producing compound is a compound which can react with hydrogen ionsto generate gas; uniformly mixing the bacteria solution, the gas-producing compound solution and the first gel solution to obtain a second gel solution; providing a crosslinking agent, wherein the crosslinking agent is an aqueous solution containing calcium chloride and boric acid; dropwise dripping the second gel solution into the crosslinking agent to obtain the embedded immobilization microbialcarrier. The embedded immobilization microbial carrier is gel beads with a porous structure.

The invention provides a lithium-oxygen secondary battery cathode. The lithium-oxygen secondary battery cathode comprises a netty metal material and a nitrogen-doped carbon nano tube compounded on the surface of the metal material; the metal material comprises one or more of iron, nickel and iron-nickel alloy. A catalyst with a multi-duct structure is grown on the surface of the metal material mesh through a one-step method so as to obtain a bendable and super-hydrophobic integrated cathode material for the lithium-oxygen secondary battery; the cathode material has high duct use efficiency and connectivity, strong mass transfer capacity, improves the charging/discharging use efficiency and the cycle times. The preparation method is simple in process, convenient for operation, easy to realize scale production, and free from adding a collector and adhesive; the complicated powder electrode preparation process is saved, the specific energy of the lithium-air battery, the energy use efficiency and the stability of the air cathode are greatly improved. And meanwhile, the cathode material is provided with high mechanical strength and high hydrophobic property, and has extensive application prospect in the wearable electronic field.

The invention discloses a rotating electrode tube type electrochemical reactor, comprising at least one electrochemical reactor shell, rotating anodes, stationary cathodes, a rotating shaft, a motor,a conductive slip ring and a bearing, wherein the electrochemical reactor shell is a vertical tubular or cylindrical body with an insulated inner wall; the lower part of the electrochemical reactor isprovided with a liquid inlet, and the upper part of the electrochemical reactor is provided with a liquid outlet; the rotating shaft is longitudinally arranged in the electrochemical reactor shell; the rotating anodes are fixed on the rotating shaft; the stationary cathodes are fixed on the inner wall of the electrochemical reactor shell; the rotating anodes and the stationary cathodes are alternately arranged; and the conductive slip ring is connected with the rotating anodes and the positive electrode of a DC stabilized power supply. The reactors may be connected in series or in parallel, and can be applied to the treatment of organic wastewater composed of any components; the rotating anodes accelerate the removal rate of organic substances, speeds up the removal rate of bubbles generated on electrode surfaces and avoids reduction in the effective area of electrodes; and the rotating electrode tube type electrochemical reactor is fast in treating speed, small in occupied space and low in investment cost.

The present invention discloses a method for preparing nanometer liposome by using a supergravity technology. The method comprises: mixing an organic solution containing a fat material and an aqueous solution containing a carrier by using a supergravity rotation bed, and carrying out freeze drying treatment to obtain the nanometer liposome. According to the present invention, by using the excellent mass transfer ability of the supergravity rotation filling bed, the preparation process of the nanometer liposome is performed under the highly-microscopic and uniform condition so as to obtain the nanometer liposome particles with characteristics of controlled particle size, narrow distribution and high stability; by adding the freeze-drying protection agent, the breaking aggregation of the nanometer liposome during the freeze-drying process can be avoided, and the process for forming the nanometer liposome through the hydration of the freeze-dried product can be accelerated; the organic solvent is treated by using the freeze-drying method, such that the operation is simple, and the organic solvent removing effect is good; the method has advantages of simple process, less energy consumption, high efficiency, low cost, and easy large-scale industrial production; and the average particle size of the obtained nanometer liposomes is 20-200 nm, the PDI is 0.1-0.3, and the method is suitable for large-scale production.

The invention discloses a plasticized polymer ionic liquid film and a method for selective separation of chromium (VI) through the same. The method comprises the steps that 1.5-2.5% of fatty amine and3.0-3.5% of polyvinyl chloride are taken as reaction raw materials to be subjected to reactive blending in 91.5-93.0% of an organic solvent, then 1.0-4.0% of a plasticizer is added, the solvent is removed through volatilization, the plasticized polymer ionic liquid film is prepared through acidification transformation, and selective separation of the chromium (VI) in chromium (VI) feed liquid isconducted through the plasticized polymer ionic liquid film under synchronous conducting of extraction and reverse extraction. A film preparation technology is simple, the using amount of a reagent issmall, and selectivity to the chromium (VI) is high; energy consumption is low in the extraction process, and secondary pollution is avoided; a film phase is not prone to leakage, a liquid film is stable in property, and the plasticized polymer ionic liquid film has the ability of continuous and repeated application; and the plasticized polymer ionic liquid film and the method can be applied to industrial application of selective removal of the chromium (VI) in the chromium-containing wastewater.

The invention discloses a method used for synthesizing alpha-ketoamides via micro flow field technology continuous flow. The method comprises following steps: 1, alpha-methylbenzyl alcohol, an amine compound, an acid binding agent, a catalyst, 2,2,6,6-tetramethylpiperidinooxy, and a benzene series solvent are mixed at a certain ratio so as to obtain a heterogeneous solution; 2, the heterogeneous solution and oxygen are pumped into a microreactor for reaction with stirring of the heterogeneous solution, after reaction an effluent is collected, and alpha-ketoamides is obtained via processing. The microreactor is high in specific surface area, heat transfer and mass transfer capability is high, and safety is high; reaction volume is small, reaction duration time is short, reaction is rapid, and yield is high; the method is capable of realizing continuous production; equipment and energy loss is low, and industrial application prospect is promising.

The invention discloses a waste tire crushing and desulfurization integrated device based on supercritical carbon dioxide jet flow and an application method. The application method comprises the following steps of: firstly, cooling gaseous carbon dioxide to a liquid state and temporarily storing the liquid carbon dioxide in a storage tank; pumping liquid carbon dioxide by a high-pressure plunger pump and pressurizing and storing the liquid carbon dioxide in a buffer tank; heating the liquid carbon dioxide in an oil bath, and converting the liquid carbon dioxide into a supercritical state; filling a tire crushing kettle with the supercritical carbon dioxide through a side nozzle and maintaining a supercritical state confining pressure environment; and forming the supercritical carbon dioxide jet flow through a central nozzle, and finishing recycling of waste tires under certain pressure. When one-time fine crushing of rubber is finished, the supercritical carbon dioxide has high heat and mass transfer characteristics, so that the desulfurization temperature of the rubber can be reduced and the desulfurization time is shortened; efficient desulfurization of rubber powder is synchronously realized and high-activity fine rubber powder is obtained; after the rubber is crushed, tire steel wires can be completely recycled and the gaseous carbon dioxide is circularly utilized; and thewaste tire crushing and desulfurization integrated device has the technical advantages of simple process, scientific principle, safety and high efficiency, energy saving and environment protection.

The invention provides a preparation method for growing TiO2NWs on surfaces of carbon fibers in supercritical water, relates to the method of carbon fiber modification and aims at solving the problems in the prior art that the body strength of carbon fibers is seriously damaged since the growth of nano wires on the surfaces of fibers needs a high-temperature environment, and moreover the operation is complicated and the implementation is not easy. The method comprises the following steps: 1, preparing TiO2 sol; step 2, extracting the carbon fibers; 3, carrying out oxidization treatment on the carbon fibers; 4, preparing a TiO2 thin film on the carbon fiber surfaces; and step 5, growing the TiO2NWs on the surfaces of the carbon fibers by using a supercritical hydrothermal method to obtain the carbon fibers with the TiO2NWs growing on the surfaces. The interface shearing strength of the prepared carbon fibers with the TiO2NWs growing on the surfaces is 96.0MPa-104MPa. The preparation method for growing the TiO2NWs on the surfaces of the carbon fibers in the supercritical water is provided.

The invention provides a dust removal desulfurization augmenter and a wet process desulfurization device. The dust removal desulfurization augmenter comprises a gas cyclone tube and a blind tube arranged inside the gas cyclone tube, wherein a gas cyclone blade is arranged on the blind tube; when smoke gas passes through the dust removal desulfurization augmenter, gas-liquid collision and rotational flowing are generated at the gas cyclone blade and the tube wall of the gas cyclone tube; a sieve plate with the preset aperture ratio is formed above the gas cyclone tube; the sieve plate enables liquid drips to be sealed and locked in to the gas cyclone tube. The dust removal desulfurization augmenter and the wet process desulfurization device provided by the invention have the advantages that the dust removal and desulfurization efficiency is high; the engineering modification is convenient to be performed; the modification cost and the operation cost are low.

The invention relates to a gas diffusion layer of a fuel cell, in particular to an integrated diffusion layer and a preparation method thereof and application of an integrated diffusion layer. According to the preparation method, the novel integrated diffusion layer is prepared by taking carbon fibers as a skeleton, compounding multi-walled carbon nanotubes, taking nitrogen methyl pyrrolidone as adispersing agent for dispersing at a high speed and taking polytetrafluoroethylene (PTFE) as a binder and a water repellent through a reduced pressure suction filtration forming method in one step. The integrated diffusion layer replaces a traditional diffusion layer composed of carbon paper and a micropore layer, and when the integrated diffusion layer is applied to a cathode of a direct methanol fuel cell or serves as an anode diffusion layer and a cathode diffusion layer at the same time, the maximum power density of a single cell is improved by 20% and 35% compared with a commodity diffusion layer. The integrated diffusion layer is applied to a zinc-air battery oxygen electrode, the maximum power density reaches up to 200mA cm-2, and a potential direction is provided for exploration of a high-performance and low-cost novel diffusion layer process and material of a fuel cell.

The invention discloses a water treatment device and method for reinforcing an ozone mass transfer and oxidation process. The device comprises an ozone generator, a feed liquid storage tank, a reactor and a waste liquid storage tank. The device can be used for greatly reinforcing ozone gas-liquid mass transfer efficiency, and realizing efficient utilization of a solid catalyst in the oxidation process. So the device is capable of effectively reinforcing the ozone mass transfer and heterogeneous ozone oxidation process, and has extensive application prospect in multiple fields.

The invention discloses a green process for producing vinyl beta-ionol. The green process includes: pumping a solvent into a microchannel reactor, discharging air in channels, and continuously pumpinga beta-ionone solution and a vinyl magnesium chloride solution into the microchannel reactor to perform Grignard reaction to obtain reaction liquid; subjecting the obtained reaction liquid to normal-temperature reduced pressure distillation to recycle the solvent, and allowing the solvent to return to the microchannel reactor used in the previous step; adding residues after the normal-temperaturereduced pressure distillation into water, stirring to perform hydrolysis reaction, and filtering to remove basic magnesium chloride solid to obtain filtrate; standing the filtrate for layering, and separating upper-layer oil phase to obtain the vinyl beta-ionol, wherein the lower-layer water phase returns to the hydrolysis reaction of the previous step. The green process is simple in process flow, low in cost and energy consumption, safe, environmentally friendly and capable of continuously producing the vinyl beta-ionol.

The invention belongs to the technical field of kitchen waste treatment, and particularly relates to a complex enzyme preparation capable of degrading kitchen waste and a preparation method and application thereof. According to the invention, the complex enzyme preparation is obtained by forming a complex enzyme by a lipolytic enzyme, a cellulose hydrolase and a proteolytic enzyme and carrying out embedding treatment on the complex enzyme by using sodium alginate grafted N-(2-aminophenyl)-N-phenylthiourea and polyvinyl alcohol; macromolecular organic matter in the kitchen waste can be quickly degraded; the defect that the water vapor condition is difficult to control in the kitchen waste fermentation process is avoided; no anaerobic bacteria exist and the degradation effect is avoided; the water vapor condition does not need to be adjusted; odor cannot be generated; organic matter in the waste can be rapidly and efficiently degraded at the normal temperature; the treatment effect is good; degradation products are water and carbon dioxide; and secondary pollution is avoided.

The invention belongs to the field of chemical engineering, and discloses a method for synthesizing an acetone condensation compound from acetone and hydrogen. The method comprises the following steps: mixing acetone and hydrogen, introducing into a supergravity rotating bed, contacting a catalyst bed layer arranged on the rotor of the supergravity rotating bed, and reacting to obtain a liquid-phase component containing the acetone condensation compound and a gas-phase component, wherein the residence time tau of the liquid-phase component in the catalyst bed layer is less than or equal to 20s. According to the invention, the supergravity rotating bed reactor is introduced into the reaction for one-step synthesis of the acetone condensation compound from acetone and hydrogen, so that theretention time of the liquid-state product in the catalyst bed layer is remarkably shortened, the phenomenon of carbon deposition and coking in the catalyst along with the prolonging of the reaction time is relieved/eliminated, the service life of the catalyst is prolonged, and the conversion rate of reactants and the selectivity of the product are changed.