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62results about How to "Strong mass transfer ability" patented technology
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Foam silicon carbide based structured catalyst and application in preparation of butadiene
The invention relates to the catalyst field, particularly to a foam silicon carbide based structured catalyst and its application in preparation of butadiene by oxidative dehydrogenation of butylene. The foam silicon carbide based structured catalyst is the catalyst for preparation of butadiene by oxidative dehydrogenation of butylenes, and takes foam silicon carbide with a three-dimensional interconnected pore structure as the carrier. A ferrite catalyst with a spinel structure is loaded on the carrier surface as the main active component, and one or over two of alpha-Fe2O3, gamma-Fe2O3 and Fe3O4 are loaded on the carrier surface as the secondary active components, thus forming the structured catalyst. The structured catalyst can be processed into a plurality of complex configurations like wall flow type, parallel channel type, static hybrid type, granules and the like. The foam silicon carbide based structured catalyst provided by the invention can convert butylene into butadiene through oxidative dehydrogenation, thus reinforcing heat transfer and mass transfer, improving butadiene yield, prolonging the catalyst life, and reducing the energy consumption and material consumption of the reaction process.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Method for preparing carbon coated phosphates positive pole material by super critical fluid
InactiveCN101388454ASimple preparation processEasy to operateElectrode manufacturing processesPhosphateHigh pressure
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.
Owner:天津斯特兰能源科技有限公司
Gas diffusion layer as well as preparation method and application thereof
ActiveCN112310413AHigh mechanical strengthMeet the requirements of high air permeabilityCell electrodesFuel cellsFiberCarbon fibers
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.
Owner:SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
Embedded immobilization microbial carrier, preparation method thereof and sewage treatment method
PendingCN108642032AKeep aliveExtend mud ageOn/in organic carrierBiological water/sewage treatmentHydrogenPolyvinyl alcohol
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.
Owner:SHENZHEN CHANGLONG TECH CO LTD
Filling material cyclone composite stripping tower and application thereof
ActiveCN103537111AImprove separation efficiencyReduce the overall heightSteam distillationCycloneDesorption
The invention relates to a filling material cyclone composite stripping tower. The tower body of the composite stripping tower is a hollow vertical tower device. A tower bottom liquid outlet is communicatively arranged in the tower bottom. A liquid storage section is arranged on the bottom of tower body of a desorption tower. A heating device is arranged in the liquid storage section. A through cyclone section is arranged coaxially in the tower body above the liquid storage section. A liquid re-distribution section is coaxially arranged above the cyclone section. A filling material section is arranged coaxially above the liquid re-distribution section. A hollow liquid distribution section is arranged in the tower body coaxially above the filling material section. A tower top liquid phase reflux inlet communicating with the internal side of the tower body is arranged on the tower body outer surface above the liquid distribution section. A foam-removing section is coaxially arranged in the tower body above the tower top liquid phase reflux inlet. A tower top steam outlet is arranged on the top in the tower body above the foam-removing section. According to the stripping tower provided by the invention, with the cyclone principle, desorption strength is enhanced, reaction tower height is reduced, space and material are saved, and desorption effect of the reaction tower is improved.
Owner:北京航天环境工程有限公司
Method for extracting slowly digestible starch from sweet yellow wine vinasse
The invention provides a method for extracting slowly digestible starch from sweet yellow wine vinasse, and belongs to the technical fields of comprehensive utilization of agricultural and sideline products and processing of starch. The method is characterized in that the slowly digestible starch (SDS) is extracted from the sweet yellow wine vinasse by an alternative double-frequency ultrasonic-assisted alkaline method. The principle of the method is that fermented mash (waxy rice starch) is initially degraded through amylase during fermenting sweet yellow wine so as to raise the ratio of a crystalline area in a solid matter and improve slow digestion performance; the alternative double-frequency ultrasonic-assisted alkaline method is performed for damaging hydrogen bond, amido bond and disulfide bond in rice protein so as to extract the slowly digestive starch. The slowly digestive starch prepared by the method is high in quality and high in nutritional value; SDS production in the prior art needs lots of chemical reagents, the SDS prepared in the prior art is poor in safety and limited to use in foods, by contrast, the SDS prepared by the method has the advantages of being high in nutritional value, slow to absorb, continuous to release energy, etc.
Owner:JIANGNAN UNIV
Lithium-oxygen secondary battery cathode and preparation method thereof, lithium-oxygen secondary battery
ActiveCN106953101AMaintain stabilityMitigation of impairmentFuel and secondary cellsCell electrodesAdhesiveMetallic materials
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.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Rotating electrode tube type electrochemical reactor and application thereof
ActiveCN107840416AStrong mass transfer abilityFast removal rateWater/sewage treatment apparatusWater/sewage treatment by oxidationElectrochemical responseSmall footprint
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.
Owner:BEIJING UNIV OF CHEM TECH
Method for preparing nanometer liposome by using supergravity technology
ActiveCN106943351AEnhanced transfer processEnhanced mixing processCosmetic preparationsToilet preparationsOrganic solventFreeze-drying
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.
Owner:BEIJING UNIV OF CHEM TECH
Plasticized polymer ionic liquid film and method for selective separation of chromium (VI) through same
ActiveCN110759430AImprove crystallinityStrong mass transfer abilityWater contaminantsWater/sewage treatment by ion-exchangePlasticizerOrganosolv
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.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Method for preparing carbon coated phosphates positive pole material by super critical fluid
InactiveCN101388454BCoated evenlyStrong mass transfer abilityElectrode manufacturing processesPhosphateHigh pressure
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.
Owner:天津斯特兰能源科技有限公司
Method used for synthesizing alpha-ketoamides via micro flow field technology continuous flow
ActiveCN107098829AImprove mixing efficiencyAvoid it happening againCarboxylic acid nitrile preparationOrganic compound preparationMicroreactorContinuous flow
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.
Owner:NANJING UNIV OF TECH
CoCrNiCuMn-TiN-TiC-WC composite material and preparation method thereof
The invention provides a CoCrNiCuMn-TiN-TiC-WC composite material and a preparation method thereof. The raw material formula of the composite material comprises CoCrNiCuMn, TiNx, TiC and WC, wherein xin TiNx is equal to 0.3-0.9 or equal to 1.1-1.3, the mass percent of CoCrNiCuMn is 5-20 wt.%, the mass percent of TiNx is 20-50 wt.%, the mass percent of WC is 2-10 wt.%, and the balance is TiC. Thepreparation method comprises the following steps: S1, preparing CoCrNiCuMn powder with the particle size of 150 nm or below; S2, preparing TiNx powder with the particle size of 150 nm or below; S3, preparing TiC powder with the particle size of 150 nm or below; S4, preparing WC powder with the particle size of 150 nm or below; and S5, carrying out mixing, prepressing and vacuum hot pressed sintering to prepare the CoCrNiCuMn-TiN-TiC-WC composite material. The composite material disclosed by the invention has high hardness and high toughness.
Owner:YANSHAN UNIV
Waste tire crushing and desulfurization integrated device based on supercritical carbon dioxide jet flow and application method
ActiveCN111745860ACrushed fullyGive full play to the swelling effectSievingScreeningPlunger pumpSupercritical carbon dioxide
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.
Owner:WUHAN UNIV OF SCI & TECH
Preparation method for growing TiO2NWs on surfaces of carbon fibers in supercritical water
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.
Owner:HARBIN INST OF TECH
Preparation method of micro-nanometer powder, reinforced micro-reaction device and micro-reaction system
ActiveCN102151533BDimensionally stableControl reaction timeEnergy based chemical/physical/physico-chemical processesMicroballoon preparationUltrasonic generatorNanometer particle
Owner:SHENZHEN ACAD OF AEROSPACE TECH
Method for preparing ethanol by semi-continuous fermentation of surface-immobilized yeast
The invention discloses a method for preparing ethanol by semi-continuous fermentation of surface-immobilized yeast. The method includes fastening a fiber material into a spherical grid to serve as animmobilization medium, filling a fermentation tank with the immobilization medium, fastening the yeast to a fiber carrier through adsorption to carry out fermentation, completing the fermentation after 2-4 batches are completed, discharging materials into another fermentation tank when the alcohol content of each batch reaches 8-10% (v / v), supplementing the materials until the fermentation tank is full, and continuing to discharge the materials into another empty tank until the alcohol content reaches 8-10% (v / v); carrying out semi-continuous fermentation by repeating the previous steps. Themethod has the advantages of low production cost, convenience in operation, stability in process, high fermentation strength, high product yield, and long-lasting and high activity of the immobilizedyeast.
Owner:江苏省生产力促进中心 +2
Dust removal desulfurization augmenter and wet process desulfurization device
ActiveCN106422639AStrong mass transfer effectHigh dust removal and desulfurization efficiencyCombination devicesGas treatmentProcess engineeringSieve
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.
Owner:BEIJING ZHONGNENG NUOTAI ENERGY SAVING & ENVIRONMENTAL PROTECTION CO LTD
A kind of foamed silicon carbide-based structured catalyst and its application in the preparation of butadiene
ActiveCN104001533BHigh yieldExtend your lifeCatalyst carriersHydrocarbonsCarbide siliconPtru catalyst
The invention relates to the catalyst field, particularly to a foam silicon carbide based structured catalyst and its application in preparation of butadiene by oxidative dehydrogenation of butylene. The foam silicon carbide based structured catalyst is the catalyst for preparation of butadiene by oxidative dehydrogenation of butylenes, and takes foam silicon carbide with a three-dimensional interconnected pore structure as the carrier. A ferrite catalyst with a spinel structure is loaded on the carrier surface as the main active component, and one or over two of alpha-Fe2O3, gamma-Fe2O3 and Fe3O4 are loaded on the carrier surface as the secondary active components, thus forming the structured catalyst. The structured catalyst can be processed into a plurality of complex configurations like wall flow type, parallel channel type, static hybrid type, granules and the like. The foam silicon carbide based structured catalyst provided by the invention can convert butylene into butadiene through oxidative dehydrogenation, thus reinforcing heat transfer and mass transfer, improving butadiene yield, prolonging the catalyst life, and reducing the energy consumption and material consumption of the reaction process.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Hierarchical pore zeolite molecular sieve as well as preparation method and application thereof
ActiveCN113184878ADiffusion fastImprove protectionMolecular sieve catalystsMolecular sieve catalystMolecular sieveFiltration
The invention provides a hierarchical pore zeolite molecular sieve as well as a preparation method and application thereof. The preparation method comprises the following steps: roasting SSZ-13 zeolite at a high temperature to obtain Na-SSZ-13 zeolite; mixing the Na-SSZ-13 zeolite with a small molecular amine compound for full adsorbing; carrying out suction filtration and separation on the Na-SSZ-13 zeolite, and carrying out alkali treatment by adopting alkali liquor after small molecular amine compounds on the surface of the Na-SSZ-13 zeolite are volatilized; washing a centrifugal solid sample collected after the alkali treatment with water to be neutral, performing drying, and then carrying out acid pickling treatment by adopting acid liquor; and washing a centrifugal solid sample collected after the acid pickling treatment to be neutral, and performing drying to obtain the hierarchical pore zeolite molecular sieve. According to the method, the SSZ-13 zeolite is subjected to the alkali treatment to construct a multistage pore channel, meanwhile, a zeolite framework of the SSZ-13 zeolite can be well protected, the mesoporous volume is higher, the mass transfer capacity is higher, and the SSZ-13 zeolite shows more excellent catalytic performance, higher diene selectivity and lower carbon deposition rate in a methanol-to-olefin reaction.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Multifunctional plant excised root culture bioreactor system
InactiveCN103031251BStrong mass transfer abilityGood gas-liquid mixing effectBioreactor/fermenter combinationsBiological substance pretreatmentsSiphonReactor system
The invention discloses a multifunctional plant excised root culture bioreactor system which comprises a spray device and a reactor, wherein the spray device comprises a spray liquid storage tank, a siphon tube, a gas sprayer, a liquid inlet tube, an air filter, a spray head, a spray valve and a liquid pump; the reactor comprises a reaction tank, a stirring paddle, a net, a gas spray cushion and a liquid outlet tube; the liquid inlet tube and the air filter are respectively arranged above the spray liquid storage tank; the lower part of the spray liquid storage tank is sequentially connected with the liquid pump and the lower part of the reaction tank through a liquid delivery duct; both ends of the siphon tube are respectively arranged in the spray liquid storage tank and the reaction tank; the end of the siphon tube extending into the reaction tank is provided with the spray head; the lower part of the reaction tank is provided with a liquid outlet connected with the liquid outlet tube; and the reaction tank is sequentially provided with the gas spray cushion, stirring paddle and net from bottom to top. The reactor system disclosed by the invention can implement two culture modes (bubble tower and spray) in one reactor.
Owner:SHANGHAI JIAOTONG UNIV
A kind of method that applies supergravity technology to prepare nano liposome
ActiveCN106943351BEnhanced transfer processEnhanced mixing processCosmetic preparationsToilet preparationsFreeze-dryingOrganosolv
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.
Owner:BEIJING UNIV OF CHEM TECH
Method of preparing alpha-ketoamide with micro-reaction apparatus
ActiveCN107963977AImprove the mixing stateImprove solubilityOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsSolubilityReaction temperature
The invention discloses a method of preparing alpha-ketoamide with a micro-reaction apparatus, which includes the following steps: 1) mixing an alpha-methyl benzyl alcohol compound, an amine compound,an acid binding agent, 2,2,6,6-tetramethyl piperidine oxide and dichloromethane to obtain a heterogeneous solution; 2) mixing the heterogeneous solution with an organic iron catalyst solution to forma mixture solution, and respectively meanwhile pumping the mixture solution and oxygen gas into a micro-reactor in the micro-reaction apparatus to form a gas-liquid-solid mixture, and performing a reaction, after the reaction is finished, collecting an effluent liquid to obtain the alpha-ketoamide (III). With the organic iron catalyst for catalytically synthesizing the alpha-ketoamide, mixing status of the reactants is improved; the organic iron catalyst is better than ferric trichloride in solubility in the solvent, so that a problem of pipe blocking due to aggregation of ferric trichlorideparticles, thus accelerating homogenization of the system. The organic iron catalyst enables reaction conditions to be more gentle, reaction temperature being only 25-45 DEG C.
Owner:NANJING TECH UNIV
Integrated diffusion layer of fuel cell and preparation method thereof, and application of integrated diffusion layer of fuel cell
ActiveCN110600749AEvenly dispersedEasy transferFuel and primary cellsCell electrodesFiberCarbon fibers
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.
Owner:DALIAN JIAOTONG UNIVERSITY
Water treatment device and method for reinforcing ozone mass transfer and oxidation process
ActiveCN110255698AIncrease contact areaHigh catalytic efficiencyWater treatment parameter controlWater/sewage treatment apparatusOzone generatorLiquid storage tank
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.
Owner:HUAQIAO UNIVERSITY
Green process for producing vinyl beta-ionol
ActiveCN110304990AStrong mass transfer abilityHigh selectivityOrganic compound preparationHydroxy compound preparationGrignard reactionSolvent
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.
Owner:南京瑞鼎生物医药有限公司
Treatment device and method for organic high-concentration wastewater
InactiveCN108911047APrevent surface foulingReasonable designWater contaminantsWater/sewage treatment by electrochemical methodsElectricityElectrochemical response
The invention discloses a treatment device and method for organic high-concentration wastewater. The treatment device for the organic high-concentration wastewater comprises a machine body, a dreg scraping machine and a plurality of groups of electrochemical water treatment units, wherein the machine body is internally provided with a mud storage chamber, an electrochemical reaction chamber and awater inlet chamber; the water inlet chamber is arranged at the left lower part of the electrochemical reaction chamber; the water inlet chamber is communicated with the electrochemical reaction chamber; a water inlet is formed in the water inlet chamber; the plurality of groups of electrochemical water treatment units are arranged at the bottom of the electrochemical reaction chamber; the dreg scraping machine is mounted at the top in the machine body; the mud storage chamber is arranged at the left upper part of the machine body; the mud storage chamber is arranged at one side of the dreg scraping machine; a mud discharging opening is formed in the bottom of the mud storage chamber; a water outlet is formed in the bottom of the right end of the machine body. The treatment device disclosed by the invention is reasonable in design, scaling and blocking conditions on the surface of an electrode can be avoided, the treatment efficiency is higher and the treatment energy consumption is lower.
Owner:方达 +1
Complex enzyme preparation capable of degrading kitchen waste and preparation method and application thereof
ActiveCN113278605AIncrease loadIncrease enzyme activitySolid waste disposalOn/in organic carrierCellulosePolyvinyl alcohol
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.
Owner:HANGZHOU NAXI ECOLOGICAL TECH CO LTD
Method for synthesizing acetone condensation compound from acetone and hydrogen
ActiveCN110903179AChange selectivityHigh selectivityOrganic compound preparationChemical industryPtru catalystLiquid state
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.
Owner:CHINA PETROLEUM & CHEM CORP +1
A fuel cell integrated diffusion layer and its preparation method and application
ActiveCN110600749BEvenly dispersedEasy transferFuel and primary cellsCell electrodesFiberCarbon fibers
The invention relates to a fuel cell gas diffusion layer, in particular to an integrated diffusion layer and its preparation method and application. The preparation method of the present invention uses carbon fiber as the skeleton, composites multi-walled carbon nanotubes, uses nitrogen methyl pyrrolidone as the dispersant to disperse at high speed, polytetrafluoroethylene (PTFE) as the binder and water-repellent agent, and adopts vacuum suction filtration molding method A new one-piece diffusion layer is made in one step. The integrated diffusion layer of the present invention replaces the traditional diffusion layer composed of carbon paper and microporous layer, and when it is applied to the cathode of a direct methanol fuel cell or as the cathode and anode diffusion layer at the same time, the maximum power density of a single cell is compared with that of a commercial diffusion layer. Improvements of 20% and 35%, respectively. The integrated diffusion layer of the present invention is applied to the oxygen electrode of zinc-air battery, and the maximum power density is as high as 200mA cm ‑2 , which also provides a potential direction for the exploration of new diffusion layer processes and materials with high performance and low cost for fuel cells.
Owner:DALIAN JIAOTONG UNIVERSITY
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