10447results about How to "Suitable for large-scale industrial production" patented technology

The present invention provides a preparation method of (S)-4-hydroxyl-2-oxo-1-pyrrolidine acetamide. The preparation method comprises: (S)-4-halogen-3-hydroxyl butyric ester as a raw material reacts under the conditions with polar solvent and alkalinity to prepare the crude product of (S)-4-hydroxyl-2-oxo-1-pyrrolidine acetamide; and the crude product is purified. The preparation method is characterized in that inorganic alkali is added for a plurality of times in the reaction process under the condition with alkalinity so as to control the pH value in the reaction to be less than or equal to 8.5. A large quantity of repeated tests are completed to determine that the optimum pH value of the reaction under the condition with alkalinity is less than or equal to 8.5, and the alkali is added in batches to strictly control the pH value of the whole reaction process, so that the alkali conditions required in the reaction can be satisfied and the reaction can be performed completely, and the target product (S)-oxiracetam is prevented from being damaged in the alkaline solution, thereby improving the yield rate of the target product (S)-oxiracetam and reducing the cost.

The invention discloses a coated composite lithium ion battery anode material and the preparation method thereof, aiming at improving the electrochemical property of the coated composite lithium ion battery anode material. The invention takes Li0.8-1.2Ni0.7Co0.2Mn0.1O2, and Li-0.8-1.2Ni0.8Co0.1Mn0.1O2, or Li0.8-1.2Ni0.9Co0.05Mn0.05O2 as the substrate, and adopts hexagonal crystal structure; the surface of the substrate is coated with a functionally gradient material layer which is 1-20%of the quality of the substrate. The preparation method includes the steps of preparing powder, mixing the materials, sintering, coating the surface, heating, and coating with organic material coating. Compared with prior art, the anode material can be combined with lithium metal and assembled to an analog battery; if the battery is charged or discharged at current density of 0.3C under 2.5-4.2V, the discharge capacity is more than 190mAh/g, the first coulomb efficiency will reach 90% and the capacity retention is more than 95% after 100 cycles. The coated composite lithium ion battery anode material is simple in technique and low in cost and is suitable for large-scale industrial production.

The invention relates to a method for producing a wood sugar product and a byproduct of ethanol or D-ribose or citric acid. The method takes hydrolysis liquid, wood sugar mother liquor and/or production waste liquid containing pentose of agricultural or forestry waste as the raw materials, comprising the following steps: (a) preprocessing feed liquid; (b) colour spectrum separation: separating thefeed liquid into arabinose fraction feed liquid and wood sugar fraction feed liquid; (c) removing mixed sugar at least containing glucose and galactolipin; and (d) carrying out aftertreatment on thewood sugar fraction feed liquid to obtain the wood sugar product. The wood sugar product comprises xylitol and D-wood sugar. The invention has low production cost and high efficiency and is suitable for large-scale industrial production.

The invention relates to a Li-ion secondary battery cathode material preparation method with a nuclear shell structure; the preparation method is characterized in that: SiO, asphalt and graphite are weighted and are added in solvent for carrying out stirring; drying is carried out; the solvent is extracted out to obtain precursors which are uniformly distributed; the precursors are arranged in a high-temperature furnace, high-temperature sintering is carried out at inert atmosphere, the temperature is reduced to room temperature, so as to obtain the Li-ion secondary battery cathode material preparation method with the nuclear shell structure; meanwhile, the SiO, the asphalt and the graphite are chosen as initial raw material, so as to prepare the Si-SiO2-C electrode material with the nuclear shell structure, when the volume of the buffering Si material is expanded, the electricity-conducting capacity of the electrode material is ensured and the electro-chemical Li-embedded reaction property of the electrode material is improved; the asphalt is used as a carbon source, while reducing the product cost, the material is coated; a regular carbon layer structure is set up in the material body and on the surface, so as to improve the electricity-conducting performance of the material; the method has simple process and is suitable for large-scale industrial production.

The invention discloses a preparation method of a modified diaphragm for a lithium-ion secondary battery as well as a prepared modified diaphragm and a preparation device and is aimed to solve the problem of lithium battery modified diaphragms in the prior art. The method concretely comprises the following steps of: (1), evenly dispersing special fiber or oxide and a binder into an organic solvent to prepare composite mixed liquid, and adding a cosolvent into the organic solvent; (2) evenly spraying the composite mixed liquid obtained in the step (1) on a polyolefin base membrane to form a primary composite membrane through an electrostatic spinning method; and (3), drying the primary composite membrane obtained in the step (2) and recycling the solvent, and then finally obtaining the finished product. The preparation method is convenient to operate and environmental friendly, can realize large-scale production and has strong feasibility.

The invention relates to a method for preparing a nano-cellulose antibacterial composite material through on-line culture. The method comprises the following steps of: (1) inoculating an activated bacterial cellulose producing strain into a liquid culture medium, performing amplification culture, transferring the liquid culture medium into a bioreactor, culturing, adding an antibacterial material into the liquid culture medium, and continuing to culture to obtain an unpurified antibacterial bacterial cellulose composite material; and (2) peeling a bacterial cellulose membrane from a framework or directly soaking the composite material in a NaOH solution, treating in water bath, and washing until an obtained product is neutral to obtain the nano-cellulose antibacterial composite material. The preparation efficiency is high, and the method is simple, convenient, feasible and low in cost; and the surface of the bacterial cellulose composite material has a nanoscale three-dimensional fibrous mesh-shaped structure, the tensile strength of the material is greatly improved compared with that of a pure bacterial cellulose membrane, and the material can be widely applied to products such as facial masks, wound dressings, plasters, artificial skins and the like.

The invention discloses a degraded natural organic bundle slow release fertilizer, which comprises the following steps: comprising easy soluble nitrogen particle fertilizer; coating natural organic bundle slow release with the main element as lignin; coating vegetable fat film layer out of nature organic film layer as sealer; bruising the nature organic matter with the main element below 60 order as coating material; adopting normal disc pelleting method; sticking the coating material to the surface of easy soluble nitrogen fertilizer particle; drying; spraying vegetable fat as sealer; getting the product. This fertilizer is very cheap, which can be used to cotton, corn, wheat, flower and lawn.

The present invention relates to a heat pipe type spherical disc type solar energy light and heat collector, belonging to the solar energy heat collection establishment technical field, which includesa spherical reflecting mirror disposed on the solar energy optical tracker system and a steam drum supported above the reflecting mirror. The steam drum is made up of an inlet and an outlet and stored up with working medium. A heat pipe type vacuum heat collecting pipe is arranged on the focusing part of the spherical reflecting mirror. The heating zone of the heat pipe type vacuum heat collecting pipe is positioned on the condensing wimble of the spherical reflecting mirror. The cooling zone of the heat pipe type vacuum heat collecting pipe is inserted into the working medium of the stream drug. The invention has simple technology, low cost, scientific design and easy to generalization and application. It has been found that the invention has fast tempera the rise, excellent heating effect, high efficiency, suitable for large scale industrialization production, secure and reliable performance.

The invention provides a process and device for carrying out stage dry distillation on oil shale under the state of full recycle, with the gas as the heat carrier. The oil shale is divided into three different sizes (such as 0-6mm, 6-20mm and 20-50mm) through crushing and screening, and the oil shale is firstly dried and heated to the temperature between 50 DEG C and 150 DEG C by the waste smoke exhausted from gas heating furnaces and then enters into the different sizes of furnaces for dry distillation to undergo dry distillation. After being treated by water spraying and an indirect cooling tower, a rotary trapper and an electric trapper for oil collection, the dry distillation oil and gas undergo oil-gas-water separation, and after separation, the oil enters into a storage tank, the water enters into a circulating water tank and the first part of gases serves as the heat carrier and is recycled, the second part of gases is used as the fuels for the heating furnaces and the third part of gases is used as the fuel gases for power generation.

The invention relates to a method for producing L-arabinose and D-xylose, which can simultaneously produce ethanol or D-ribose or citric acid as a byproduct. The method utilizes a hydrolyzate of agricultural waste, a xylose mother liquor and/or a production waste liquor containing pentose as the raw materials and comprises the following steps: (1) pretreating the raw materials; (b) carrying out the chromatographic resolution to separate the raw materials into an arabinose-stage liquor and a xylose-stage liquor; (c1) removing fermentation inhibitors which are impurities and unwanted bacteria, which have an inhibiting effect on the fermentation; (c2) fermenting to remove unwanted saccharides at least comprising glucose and galactose; (d) and finally, respectively carrying out the post treatment on the arabinose-stage liquor and the xylose-stage liquor to obtain the L-arabinose and the D-xylose. Steps (c1) and (c2) are arranged before the chromatographic resolution in step (b) or after step (b). The method has the advantages of low production cost and high efficiency, and is suitable for large-scale industrial production.

The invention discloses a carbon coated sulfur-based anode composite material in the field of lithium sulfur batteries. The composite material comprises a sulfur-based anode material and amorphous carbon, wherein the amorphous carbon is uniformly and compactly coated on the surface of the sulfur-based anode material, the particle diameter of the sulfur-based anode material is 10 nanometers to 10 microns, and the thickness of the amorphous carbon layer is 1 to 5 nanometers. The invention also discloses an anode, which comprises a current corrector and an anode material supported on the current corrector, wherein the anode material comprises an anode active substance, anode adhesive and a conductive component; and the anode active substance is the carbon coated sulfur-based anode material. The anode is adopted for preparing a corresponding lithium sulfur battery; the amorphous carbon is coated on the surface of the sulfur-based anode active material so as to remarkably improve the electric conductivity of the anode material, and the lithium sulfur battery adopting the anode has high specific capacity and good cycle performance; and the preparation process is simple and suitable for large-scale industrialized production.

The present invention relates to a method preparing phosphate iron lithium with high compacted density and good cohesiveness. The technical points are as follows: firstly, ferric oxide, phosphate dihydrogen lithium, oxide or carbonate doping metal elements and carbon source are ball-milled evenly in an aqueous solution and are then sprayed and dried so that a spherical powder is obtained; the spherical powder is secondly mixed with carbon source; after ball-milling and in nitrogen atmosphere protection, the mixture is presintered for 4 hours to 48 hours in 300 DEG C to 400 DEG C; after breaking, the mixture is heat treated for 4 hours to 48 hours in a high temperature of 600 DEG C to 800 DEG C so the phosphate iron lithium with high compacted density and good cohesiveness is obtained. The present invention has the advantages that the phosphate iron lithium prepared by the present invention is good in cohesiveness when used as lithium ion battery anode, an anode plate is high in compacted density, softness and winding performance. The preparing method generates no harmful gas, costs little, is simple in process and especially suitable for large-scale industrial production.

Disclosed is a transparent, flame-retardant thermally-insulating, UV-blocking polymer composite film, comprising sequentially from the top: a flame retardant layer, a base layer, a thermal insulation layer, and a UV-blocking layer, having a total film thickness of 1um to 500um, visible light transmittance greater than 80%, UV light transmittance less than 1%, and near-infrared transmittance less than 10%. Also disclosed is a preparation method for the present transparent, flame retardant thermally-insulating, UV-blocking polymer composite film, the technical processes whereof are simple and easy to execute, involve low production costs, and are suitable for industrial mass production. The present transparent, flame retardant thermally-insulating, UV-blocking polymer composite film can be used on such transparent materials and items as glass, windows, protective films, containers and electronic components, and has applications in such fields as construction, transportation, electronics, aerospace and medicine.

The present invention relates to a method for extracting the purificatory cordycepin and the cordyceps amylase from the cordyceps militaris, belonging to the fields of medicines and health protection and chemical engineering. The cordyceps militaris powder is extracted and filtrated by a cooling seep method, the filter residue is mixed with ethanol, the supersonic wave assists to extract and offcenter, the supernatant has the processes of concentration and alcohol-precipitating, then the alcohol-precipitated supernatant has the processes of decompression, concentration and elution, the eluted liquid has the processes of concentration and crystallization and recrystallization using the n-butyl alcohol, at last the purificatory amylase is obtained after freezing and drying. The preparation progress of the present invention only uses water and ethanol as the solvent, thus reducing the pollution, the resin is capable of being reused a plurality of times with low cost. The present invention fully exploits the biological activity ingredients of the cordyceps militaris, realizes the coextraction of the cordycepin and the cordyceps amylase, guarantees the biological activities of the cordycepin and the cordyceps amylase, farthest increases the utilization rate of the raw material to the largest extent, reduces the manufacturing cost. The present invention is suitable for the large-scale industrialized manufacture.

The invention discloses a preparation method for vanadium dioxide and doped powder thereof. The method comprises the following steps: 1, weighing vanadium pentoxide, hydrogen peroxide and distilled water, preparing the materials into a V<5+>-containing complex aqueous solution; 2, adding a reducing agent, a surfactant and a dopant to the complex aqueous solution, and stirring to form a clear solution; 3, transferring the resulting solution from the step 2 to a hydrothermal reaction kettle, and carrying out a reaction for 1-168 hours at a temperature of 140-220 DEG C to obtain the doped powderof the VO2(B); 4, placing the resulting doped powder of the VO2(B) from the step 3 in high pure argon atmosphere or nitrogen atmosphere, and annealing for 10-720 minutes at the temperature of 400-700DEG C to obtain the doped powder of the VO2(M). The method of the present invention has characteristics of low cost, simple process and easy control, and is suitable for the large-scale industrial production. With the method of the present invention, the doping of the VO2 powder material can be realized, and the doped atoms can be uniformly dispersed in the VO2.

The invention discloses a production method of whole-grain fast-food nutritional porridge. Whole grains are taken as raw materials; the purpose of balanced nutrition is achieved through preprocessing and grinding the raw materials and proportioning nutritional ingredients well; the whole-grain fast-food nutritional porridge is prepared by the processes of extruding for curing by a double-screw extruder, accurately controlling the gelatinization degree of starch in the raw materials, granulating for forming, pre-drying, roasting, and cooling. High viscosity of a porridge body during brewing is ensured by accurately controlling the gelatinization degree of the starch in the raw materials in the preparation process, so that any thickener or auxiliary material does not need to be added, the manually cooked porridge can be brewed with hot water without adding cured powdery materials, good granule shape can be kept after the porridge is brewed for 20 minutes, and the appearance and the mouth feel of the fast-food nutritional porridge can be equivalent to those of porridge cooked at home.

The invention discloses a preparation method of a Ti3AlC2 ceramic powder, and belongs to the technical field of material science. The preparation method includes the following steps: taking Ti, Al and TiC respectively according to a molar ratio of Ti:Al:TiC:Sn:Si equal to 1:(1-1.3): 2:(0.05-0.2):(0.05-0.15), then adding a Sn powder and a Si powder and mixing well to obtain a mixture; 2) adding ethanol, conducting fully ball milling to obtain a uniform powder and drying; and 3) sintering the dried mixture in vacuum and cooling to obtain the Ti3AlC2 ceramic powder. The simple process provided by the invention is simple; addition of a grinding aids improves mixing uniformity of the mixture; addition of synthetic additives improves the purity of the product and reduces the impurities; and using TiC powder as a C source not only reduces the synthesis temperature but also improves the purity of the product.