265results about How to "Short operating cycle" patented technology

The invention relates to a preparation method and applications of a catalyst which is used for preparing light olefin from synthesis gas directly and co-preparing gasoline. The preparation method comprises following steps: a molysite is taken as a precursor, and then the catalyst is obtained by pre-treatment with a carbon source, dispersion-mixing and modified vapor deposition which are all simple and easy to operate, wherein an iron-containing compound is taken as the active center of the catalyst, and the catalyst can be used for direct conversion of synthesis gas to light olefin and co-preparing of gasoline. Catalytic activity and economic cost of the catalyst enable that the catalyst can be applied in industrial production.

The invention belongs to the field of a novel chemical power supply and a new energy material, and particularly relates to a novel rechargeable aqueous zinc ion battery taking a vanadate salt as an electrode active material. The rechargeable aqueous zinc ion battery comprises a positive electrode, a negative electrode, a separator and an electrolyte, wherein the separator is arranged between the positive electrode and the negative electrode, the electrolyte contains negative ions and positive ions and has ion conductivity, an active material of the positive electrode takes the vanadate salt to which zinc ions are intercalated/de-intercalated as main, the electrolyte takes a zinc soluble salt as a solute and water as a solvent, the concentration of the electrolyte is (0.1-5)mol/L, and the electrolyte is a liquid-state or gel-state material with ion conductivity. The material shows excellent high-rate performance, cycle stability and long lifetime when assembled to form the aqueous zinc ion battery, is a potential application material of the high-power and long-lifetime zinc ion battery and has a wide application prospect in an aspect of energy storage on a large scale.

The invention relates to a graphene enhanced aluminium-based silicon carbide composite and a preparation method thereof. The composite comprises the following substances by volume percent: 40% to 70% of silicon carbide and 0.5% to 5% of graphene, and the balance being aluminium alloy. The composite is prepared through the powder metallurgy method and is obtained through the steps of blending, powder mixing, bagging, vacuum degassing and hot iso-hydrostatic forming treatment. The composite has the advantages of high thermal conductivity, high strength, high plasticity, light weight, good thermal diffusivity, isotropy, and the like, and becomes a second-generation electronic packaging material with wide application.

The invention discloses a process for preparing odor-removed concentrated juice of Momordica grosvenori fresh fruits, which comprises cleaning Momordica grosvenori fresh fruits, commuting into fruit pulps, then adjust pH and temperature of the fruit pulp, chaging immobilizing pulp enzyme for decomposing main parts of the pectine, hydrolyzing the methyl galactonic acid residual in the pectine, cracking plant cell walls, releasing more fruit juice and clearing the fruit juice simultaneously, then ultrafiltrating the fruit juice and carrying out odor-removing treatment, concentration, sterilizing and packaging. The process of the invention has the advantages of simplified and effective procedures, high rate of extract yield and low cost of preparation, the obtained fresh Momordica grosvenori concentrated juice has good taste, high sugariness and transparent appearance with no precipitation after long time storage.

The invention relates to a graphene, aluminum and silicon carbide composite material and a preparation method thereof. The composite material is prepared from of constituents of 10-40 vol% of silicon carbide, 0.5-2 wt% of graphene, and the balance aluminum alloy. The composite material is prepared through a powder metallurgic method and can be obtained through proportioning, powder mixing, packaging, vacuum degassing and hot isostatic forming. The composite material has the advantages of low density, low weight, high hardness, high tensile strength and the like, the strength, fatigue resistance and toughness of the material are remarkably improved through addition of a proper amount of graphene, and thus the composite material has broader application prospects in the field of structural pieces.

The invention discloses a microbial electrolysis two-section type sludge anaerobic digestion device and a method for producing methane by using the microbial electrolysis two-section type sludge anaerobic digestion device, relating to an improved two-section type anaerobic digestion device and a method for producing methanol from sludge. The purpose of the microbial electrolysis two-section type sludge anaerobic digestion device is to solve the technical problems of long fermentation cycle, low methanol yield and difficult biomass degradation and application in an existing residual sludge anaerobic digestion process. The microbial electrolysis two-section type sludge anaerobic digestion device consists of a continuous stirring type acidogenic reactor and a microbial electrocatalysis assisted upflow methane-producing reactor. The method comprises the following steps: starting a microbial catalytic electrolysis unit; producing acid by fermenting the residual sludge; and producing methanol. According to the microbial electrolysis two-section type sludge anaerobic digestion device and method disclosed by the invention, an acid production stage in a treatment process of the residual sludge only needs 5 to 8 days, a methanol production stage adopts continuous flow operation, the hydraulic retention time can be reduced to less than 1 day, and the operation cycle of sludge anaerobic digestion can be greatly shortened by adopting the device and method disclosed by the invention. The device and method disclosed by the invention belong to the field of sludge anaerobic digestion.

An apparatus (10) for dispensing respectively predetermined quantities of pulverulent contents (36) has a rotatably drivable metering roller (16) containing at least one metering chamber (54, 54.3), and a material store (34) which stores the pulverulent contents (36). The metering roller (16) contains at least one lateral line (24), which is not line-connected to the metering chamber (54) and of which the at least two line ends terminate on the surface of the metering roller. A gas line (44) is guided into the housing (12) and passes out of the housing again in a concave surface region (14). Gas can be introduced into the material store (34) via the lateral line (24), in dependence on the respective rotary position of the metering roller, through said gas line (44). In dependence on the rotary positions of the metering roller, the gas line (44) which serves for fluidizing the contents (36) present in the material store (34) is closed or opened by the metering roller (16).

The invention belongs to the technical field of preparation of an electronic reagent and relates to a device and a method for preparing electronic ethylene carbonate by coupling crystallization with rectification. The device for preparing electronic ethylene carbonate by coupling crystallization with rectification provided by the invention comprises a raw material storage tank, a falling film crystallizer, a rectifying column, a first product tank, a transition tank and a second product tank, wherein the raw material storage tank is connected with a feeding port of the falling film crystallizer; a discharging head pipe is arranged at a discharging port of the falling film crystallizer; the discharging head pipe is respectively connected with the feeding port of the falling film crystallizer, the first product tank and the transition tank; the transition tank is connected with the rectifying column; an outlet at the top of the rectifying column is connected with the second product tank; the outlet at the bottom of the rectifying column is connected with the raw material storage tank. According to the invention, the two technologies of falling film crystallization and rectification are coupled with each other, the deficiencies thereof are mutually made up, more efficient separating operation is realized, the prepared ethylene carbonate can reach ultra-clean high-purity electronic level, and meanwhile, the structure is simple, the operation is convenient, the energy consumption is low and the cost is low.

The invention belongs to the technical field of preparation of electronic grade reagents and relates to a method for preparing electronic grade ethylene carbonate by falling film crystallization. Themethod comprises gradual cooling crystallization, stepwise heating sweating, complete melting and secondary crystallization and realizes recovery and treatment on the falling film crystallization residue liquid and sweating residue liquid so that energy consumption is reduced, a falling film crystallization yield and product purity are improved and product purity, product yield and comprehensive device economic benefits are maximized. Compared with the existing method using alcohol removing agent/impurity removing agent or distillation purification, the method is economical and has better effects and considerable economic benefits.

The invention relates to a method for cultivating and producing polygalacic acid with polygala root hair-shaped roots, which uses polygala root hypocotyl and blades as an explantation and converts by activating hair-shaped root agrobacterium, and leads T-DNA of hair-shaped root agrobacterium Ri plasmid to be integrated to polygala root nucleus DNA for expressing and forming hair-shaped roots, and polygala root hair-shaped roots are gained through plural times of subinoculation. The polygala root hair-shaped roots which are gained contain the same components of polygalacic acid (namely, senega-saponin) as that of traditional Chinese medicine polygala root, and the content is not lower than the wild traditional Chinese medicine polygala root. The invention can be used as new medicine resources to provide polygala root products, which solves the practical problems that the demand amount of polygala root is increased year by year, and wild resources are lacked and the quality of cultivated breeds is reduced, which brings practical problems to clinic, Chinese patent drug processes and export.

The invention discloses rubber for sports shoe soles. The rubber for the sports shoe soles comprises the following components in parts by mass: 30-70 parts of butadiene rubber, 20-40 parts of naturalrubber, 15-30 parts of brominated butyl rubber, 10-20 parts of solution-polymerized styrene-butadiene rubber, 5-10 parts of glass fiber, 2-5 parts of polyethylene glycol, 0.5-2 parts of zinc stearate,2-5 parts of zinc oxide powder, 2.5-4 parts of a vulcanizing agent, 1.5-2.5 parts of an accelerator, 30-50 parts of white carbon black, 3-4.5 parts of a silane coupling agent, 4-7 parts of a homogenizing agent, 2-5 parts of softening oil, 1-3 parts of an anti-aging agent and 0.5-1 part of paraffin. The invention further provides a preparation method of the rubber for the sports shoe soles. Rubbershoe soles for sports shoes, prepared according to the technical scheme adopted by the invention, have many properties such as super wear resistance, good folding resistance and anti-slip performance; the preparation method is simple in production process and is suitable for wide application.

The invention discloses a method to separate and purify pectic enzyme with double water phase extractive system, which comprises the following steps: mixing carbowax, ammonia sulfate and water; producing mixed solution; shaking the mixed solution evenly; stewing; phase-splitting; adding into pectic enzyme liquid; shaking evenly; extracting and phase-splitting at room temperature; separating upper phase liquid carbowax to reserve; mixing with potassium sodium and water; back-extracting at room temperature; separating lower phase; filtering with film; getting pectic enzyme. This invention can optimize preparing craft, shorten operating period and increase receiving ratio of the product.

The invention relates to a device for distributing a double-sided adhesive tape on a frame strip, in particular to a device for distributing a double-sided adhesive tape on an independently-formed glass seal strip; the device comprises a positioning slot with a vacuum absorption hole and a rack workbench top for fixing the positioning slot, and is characterized in that the device also comprises a guiding rail, a guiding roller wheel support base, an adhesive tape distribution trolley and a double-sided adhesive tape fixed disc; the shape of the positioning slot frame is designed according to the shape of the frame strip; the guiding rail is positioned at the outer side of the positioning slot, the guiding rail is in enlarged correspondence with the positioning slot on geometrical shape and planar position, two connecting rods on the guiding roller wheel support base are respectively connected with the center of a rectangle plate through sleeve bearing holes, a pair of roller wheels on each rectangle plate is movably nested with the tangents on both sides of the guiding rail; the adhesive tape distribution trolley is composed of a roller pressing wheel, a front adhesive tape limit plate, a back adhesive tape limit plate, two roller pressing wheel height position adjusting bolts, a trolley overturn stand, a handle and a trolley support base. The invention has the advantages that the accuracy and stability of adhesive tape distribution position are greatly improved and the operation cycle is shortened.

The invention discloses a pulse impacting type coordinative multi-directional rotating and rolling pressing preparation method of a gradient nanocrystalline of a board. The method is characterized inthat the surface of a metal board is impacted through a high-intensity steel impacting pin in a high-frequency pulse type impacting mode, and the impacted board surface is rolled and pressed in a rapid multi-directional rotating and rolling pressing mode, thus the board surface layer is subjected to strong plastic deformation, and the surface is induced to realize nanocrystallization, and as a result, the gradient nanocrystalline is prepared. The method has the advantages that (1) the surface nanocrystallization processing period is short; the pulse impacting and the multi-directional rotatingand rolling pressing are synchronously carried out, so that the operation period of impacting and then rolling and pressing can be greatly reduced; (2) the surface nanocrystallization effect is obvious; the accumulated plastic deformation of the surface layer of a metal material is greatly improved under the coordination effect of the impact load and the extruding load, and moreover, the dynamicplastic flowing capacity of the surface layer of the material can be effectively improved; and (3) the surface roughness of the material is reduced; and a protruded part on the surface of the materialcan fills a concave part based on the plastic flowing capacity of the material and under the multi-directional rotating and rolling pressing effects.

The invention relates to a preparation method for an antagonizing drug-resistance anti-tumor EGFR (Epidermal Growth Factor Receptor) inhibitor. Specifically, the invention relates to a preparation method for a 4-(1-cyclopropyl-1H-indole-3-yl)-N-phenylpyrimidine-2-amine derivative of a compound structure shown in a general formula (IV). According to the method, defects in the prior art are overcome; cost is greatly shortened; an obtained product has high purity, high yield and high technical maneuverability; and technical safety is greatly improved. Therefore, the preparation method disclosed by the invention and the application of the preparation method are suitable for industrial application.

The invention discloses a method for efficiently producing melatonin, relates to the technical field of melatonin synthesis, and aims to solve the problems that purity and an extraction rate of melatonin are relatively low and preparation cost is relatively high in the prior art. According to the method, 5-methoxy indole is taken as 100% of a raw material, carbonyl chloride accounts for 98% of theraw material, ammonium hydroxide accounts for 57% of a generation compound, and lithium aluminum hydride accounts for 80% of the generated compound. The 5-methoxy indole (1) is taken as a raw material, and a carbonyl chloride reaction solvent is added to acylate the 5-methoxy indole, so that a reaction is carried out to generate a compound (2); the generated compound (2) is stranded, and then anammonium hydroxide solvent is mixed with the generated compound (2) according to a certain usage amount to generate a compound (3); and after the compound (3) is generated, a lithium aluminum hydridereagent is added to carry out a reduction reaction on the compound (3) to generate a compound (4).

The invention provides a nickel-based catalyst, a preparation method thereof and a method for catalyzing methane cracking to produce hydrogen. The catalyst includes a nickel-based composite metal oxide with a general formula shown as xX.yA.zB.(100-x-y-z)M, wherein X is Ni and /or its oxide, A is an auxiliary metal component, B is an assistant metal component, and M is a carrier. The method for catalyzing methane cracking to produce hydrogen includes: contacting methane-containing feed gas with the catalyst in a high density circulating fluidized bed reactor, and carrying out catalytic cracking reaction to obtain hydrogen containing product-gas and a deactivated catalyst, performing separation in a settler, letting the catalyst carry carbon deposit to enter a regenerator for regeneration, thus obtaining regenerated flue gas containing CO or synthetic gas, and letting the regenerated catalyst enter the reactor again. The heat generated by regeneration supplies the energy need of the whole system to realize self-heating operation. The method provided by the invention can realize large-scale continuous production of hydrogen at low price, and can effectively reduce energy consumption and save the production cost.

The invention relates to an analytically chemical detection method of dopamine and particularly relates to a dopamine detection method based on a surface enhanced resonance Raman spectrum. The dopamine detection method comprises the following steps: taking gold nano-particles obtained by taking sodium citrate as a reducing agent to reduce chloroauric acid as an SERRS substrate; taking ferric iron as a central body to be simultaneously coordinated with citrate ions remained on the surfaces of the gold nano-particles and dopamine molecules in a solution to be detected to form a citric acid-iron-DA complex, so as to selectively capture DA molecules in the solution to be detected; and forming resonance by the citric acid-iron-DA complex and Raman exciting light to generate a very strong SEERS signal so as to obtain an SEERS characteristic fingerprint signal of the DA molecules and realize high-sensitivity SERRS detection on the DA molecules. The detection method provided by the invention has the advantages that the needed materials are simple, the operation period is short and the cost is low; and the detection lower limit is very low.

The invention relates to a method for extracting moringa oleifera lam flavone from moringa oleifera lam leaves. The method comprises the steps: 1) drying the moringa oleifera lam leaves, loading into a filter basket, putting into a sub-critical extraction kettle, and closing airtightly the extraction kettle; then adding an organic extraction agent, heating up until an extracted liquid in the sub-critical extraction kettle is in a sub-critical state; and extracting to obtain the extracted liquid, putting into a solvent recycling kettle, carrying out reduced-pressure recycling of the solvent, and thus obtaining a black green extract; 2) adding n-butanol saturated by water into the extract, and extracting; centrifuging by using a centrifuge, and collecting the extracted phase; and carrying out reduced-pressure concentration of the extracted phase by a rotary evaporator to obtain a brown-yellow extract; and 3) loading the brown-yellow extract on a macroporous resin column, then carrying out gradient elution with elution liquids according to an order from small elution liquid polarity to large elution liquid polarity, detecting, taking a fraction having the flavone content of more than 97%, concentrating to a dried powder, recrystallizing with methanol or ethanol, and thus obtaining a flavone product with the purity of more than 98%. The product has less impurity content and high biological activity, and the sub-critical fluid extraction technology has the advantages of high extraction efficiency, short operating period, energy saving, time saving, and high recovery rate of the extraction agent.

The invention discloses a methyl acrylate (MA)-methyl methacrylate (MMA) copolymer-base denture base material as well as a preparation method and application thereof. The preparation method comprises the following steps: toughening a first monomer-MMA by a second monomer-MA; copolymerizing the two monomers in a suspension polymerization manner, wherein the MA monomer and the MMA monomer form an oil phase, the amount of the MA monomer is 1-10wt% of the mass of the oil phase, and the amount of the MMA monomer is 90-99wt% of the mass of the oil phase; evenly mixing the obtained copolymerization product with the heat-cured liquid for denture acrylic; and finally heating for curing. The MA-MMA copolymer-base denture base material is applied to the field of a denture base material; and compared with a purer PMMA (polymethylmethacrylate) material, the denture base material has the advantages of greatly improved bending strength, greatly improved impact strength and slightly improved tensile strength, thus successfully solving the problems of the PMMA denture base material in mechanical strength and particularly in impact strength.