32results about How to "Facilitate the realization of industrial scale production" patented technology

The invention relates to preparation and application of catalysts and aims at providing preparation and application methods of a Cu-Ni-based catalyst for reversed water gas reaction. The preparation method comprises the following steps: dissolving soluble copper salt and soluble nickel salt into a mixed solution of water and ethanol; adding a complexing agent and reacting under heating and stirring conditions to obtain CuNi hydrotalcite; drying and roasting to prepare CuNi mixed oxide with a nanotube structure; after carrying out reduction reaction in a mixed gas atmosphere of flowing H2 and Ar, naturally cooling to room temperature, so as to obtain the Cu-Ni-based catalyst. The complexing preparation method provided by the invention is simple and feasible; influences, caused by uncertainfactors in a preparation process, on the structure and performance of the catalyst are avoided. Active components of the catalyst comprise copper and nickel and any noble metal is not used so that thepreparation cost of the catalyst is relatively low, and industrial large-scale production of the catalyst is easy to realize. The catalyst can be used for a CO synthesis technology and is further connected with a CO hydrogenation catalyst in series to produce alcohols and hydrocarbons with high additional value, so that the catalyst has an application prospect.

The invention relates to porous silicon nitride ceramic and a production method thereof. A product of the porous silicon nitride ceramic has silicon nitride in beta-phase silicon nitride crystal form in cylinder or rod shape. The product is 20-65% in total porosity and 450-50MPa in bending strength. The silicon nitride in the product of porous silicon nitride ceramic is in the beta-phase crystal form in the cylinder or rod shape, and strength and toughness of the product can be improved further.

The invention relates to a placental lipopolysaccharide-polypeptide bivalent immunoenhancer and a preparation method thereof. Lipopolysaccharide and polypeptide which are extracted from animal placentas (pig, cattle, sheep and the like) are taken as main raw materials, and the main raw materials are combined with auxiliary materials such as polyethylene glycol and xylitol so as to be prepared into an oral preparation. A formula of the placental lipopolysaccharide-polypeptide bivalent immunoenhancer is that every 100mL of the oral preparation contains 5-30mg of placental lipopolysaccharide, 0.1-1.0g of polypeptide, 3-10g of polyethylene glycol and 1-15g of xylitol. The placental lipopolysaccharide-polypeptide bivalent immunoenhancer provided by the invention has the advantages that a co-production technology is adopted, the modern biological process integration technology and a green biochemical extraction technology are applied, animal placental lipopolysaccharide and placental peptide are perfectly combined, synergistic effects are achieved, immunologic functions of an organism on multiple bacteria and viruses are enhanced, and the placental lipopolysaccharide-polypeptide bivalent immunoenhancer has better curative effects on chronic bronchitis, bronchial asthma and cold prevention of human and animals respectively and can be widely applied to industries of medical treatment as well as prevention and health care on the human and animals. A production process of the immunoenhancer product is pollution-free, the three wastes are not produced, energy conservation and environmental protection are realized, the production cost is low, and economic benefits are obvious.

The invention provides a preparation method of nano-scale indium hydroxide, comprising the following steps: a) passing ammonia gas into an indium nitrate aqueous solution to obtain a precursor slurry; b) washing the precursor slurry, spraying Dry to obtain indium hydroxide powder. The preparation method provided by the invention can reduce the production of ammonium nitrate mother liquor, reduce the washing difficulty and water consumption, reduce the generation of nitrogen-containing wastewater, and reduce the difficulty of wastewater treatment; at the same time, the preparation method of the invention can obtain nano-scale The product reduces the preparation cost, simplifies the operation steps, and reduces the impurities in the slurry, thereby reducing the washing difficulty and washing water consumption; moreover, the obtained product has a small particle size and good uniformity, and does not need to be screened. the preparation process.

The invention belongs to the technical field of chemical synthesis of pesticides, and in particular relates to a method for preparing 2-chloro-5-substituted pyridine, in particular for preparing 2-chloro-5-methylpyridine. In the present invention, the amide shown in formula C is used as a raw material, and the reaction is carried out in the presence of a chlorinating agent and nitrogen dimethylformamide, and the 5-substituted 2-chloropyridine shown in formula I is obtained by distillation after the reaction finishes. When the present invention adopts the compound of formula C structure to prepare the 5-substituted 2-chloropyridine, the by-product is allyl chloride (or its homologue) with a smaller molecular weight, and the difference with the boiling point of the product is obvious, not only the reaction conversion rate and yield It is higher than the prior art, and the by-products are easily separated from the products, and the by-product industry is more conducive to recovery; therefore, the preparation method of the present invention can greatly save equipment investment, reduce production costs, and simplify operation procedures; the use price in the route of the present invention Lower amine as starting material reduces production cost.

The invention relates to puffing equipment, in particular to rapid dehydration type pneumatic-puffing equipment. A water catcher is arranged in a vacuum tank of the equipment, wherein a condenser pipe of the water catcher is paved in the vacuum tank in an S shape, and is connected with the water catcher through a snuffle valve below the vacuum tank; a drain valve is arranged at the lower end of the water catcher and is used for discharging condensate water in the water catcher. When the rapid dehydration type pneumatic-puffing equipment works, a lot of flashing hot steam generated by a lot of materials in the puffing tank due to rapid pressure relief penetrates through the water catcher, the hot steam is rapidly cooled and condensed into water due to fully heat exchange between the flashing hot steam and a refrigerating coil, is collected into a water collector through a pipeline, and then is discharged out of the equipment; a lot of hot steam is converted into liquid water and then is discharged by the water catcher in the vacuum tank in a vacuum state; the vacuum degree required for puffing and drying is kept; the workload of a vacuum pump assembly at the rear end is reduced; the drying rate of materials is greatly improved; the quality of a dry product is improved; and achievement of industrial large-scale production employing a pneumatic-puffing technology is facilitated.

The invention discloses an anisotropic magnetic polymer composite film material and a preparation method thereof, belonging to the technical field of magnetic polymer composite materials. The composite film material includes FeCo magnetic nanoparticles and a polymer matrix. Preparation steps: 1) adding nano-FeCo cubic magnetic nanoparticles into the high molecular polymer, and stirring uniformly to obtain a mixture; 2) spin-coating the obtained mixture onto a glass sheet or a silicon sheet to form a thin film, and placing the obtained thin film on The "self-assembly" of magnetic particles is carried out in a magnetic field, and then solidified at a certain temperature to prepare an anisotropic magnetic polymer composite film. The invention has the advantages of simple process, easy control of film thickness, good directionality of the anisotropic self-assembled "nano rope", high production efficiency and good mechanical properties, and has potential application in high-tech fields such as flexible magnetic devices.