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 provides a reinforced micro-reaction device for preparing micro-nanometer powder, a micro-reaction system and a preparation method of the micro-nanometer powder. The micro-reaction system comprises a feeding device, a micro-fixing device, the reinforced micro-reaction device and a storage chute; the reinforced micro-reaction device comprises a pipe and an ultrasonic generator; the pipe comprises a central passage with size increasing gradually; and the ultrasonic generator is arranged outside the central passage. The micro-reaction system has the advantages of being rapid in mixing speed, strong in mass transfer capability, low in energy consumption, easy for amplification and strong in operation control, effectively preventing the blockage of micro-reaction passages and the agglomeration of nanometer particles and the like. In the preparation method, the two processes of mixing and reaction are divided and can be respectively carried out in the micro-mixing device and the reinforced micro-reaction device so that the low-cost, high-efficiency, stable-performance and controllable-quality continuous production of the micro-nanometer powder is realized. The device, the system and the method are particularly suitable for the industrial production of chemical liquid-phase reaction with rapid reaction speed and high momentum, energy and quality transfer requirements and having solid generated.

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.

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.

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.