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249results about How to "Suitable for continuous large-scale production" patented technology

Catalytic distillation production method for biodiesel

The invention provides a method for continuously producing biodiesel. The method comprises the following specific steps of: preheating grease and a low-carbon alcohol according to a certain proportion, and pumping into a catalytic distillation tower filled with a solid acid or a basic catalyst; feeding the grease from the upper part of the tower in a liquid form; feeding the low-carbon ethanol from the lower part of the tower in a steam form; inversely contacting the grease and the low-carbon ethanol; performing an esterification or ester exchange reaction on a solid acid or alkali catalyst bed layer in the tower; condensing the low-carbon alcohol evaporated on the top and making a part reflow to the tower top; circularly using the remaining part; and treating a bottom discharged material by using a sedimentation laminating device to obtain biodiesel from an upper layer and side product glycerol from a lower layer. A catalytic distillation process based on a solid acid or alkali catalyst is adopted, and reaction and separation processes are integrated, so that the consumption of a large quantity of low-carbon alcohols is lowered, and the yield of biodiesel is up to 99 percent; the solid acid or alkali catalyst can be used repeatedly; and the method for producing biodiesel has the advantages of energy saving, environmental friendliness, suitability for continuous scale production, and good market prospect.
Owner:SOUTHEAST UNIV

Electrostatic spinning nanofiber generating device

The invention discloses an electrostatic spinning nanofiber generating device. The electrostatic spinning nanofiber generating device comprises a fiber generator, a fiber collecting device and a high-voltage generator, wherein the fiber generator comprises a spinning cavity, silk spray thread slots and a liquid storage tank; a slit is formed in each silk spray thread slot, and is communicated with the inner part of the spinning cavity; the liquid storage tank is communicated with the spinning cavity; each silk spray thread slot adopts a structure with twists and turns; the fiber collecting device is placed right above the silk spray thread slots; the high-voltage generator is provided with a high-voltage terminal and a ground terminal. According to the electrostatic spinning nanofiber generating device disclosed by the invention, nanofibers are produced by using viscous liquid as raw materials and utilizing an electrostatic spinning principle. Compared with the prior art, the core of the electrostatic spinning nanofiber generating device disclosed by the invention is the fiber generator with the bent slits; through the adoption of the fiber generator, the change of the concentration of spinning liquid, which is caused by solvent evaporation, is effectively inhibited, so that the producing stability of the nanofibers is greatly improved; besides, the uniformity and the production efficiency of produced fiber films are improved, so that the electrostatic spinning nanofiber generating device is suitable for the continuous scale production of nanofibers.
Owner:上海云同新材料科技有限公司

Heat-preservation and heat-insulation macromolecular environment-friendly material and preparation method thereof

The invention discloses a heat-preservation and heat-insulation macromolecular environment-friendly material which is characterized by being prepared from the following raw materials in parts by weight: 80-100 parts of linear thermoplastic phenolic resin, 35-45 parts of 4-chlorobenzene chloromethyldimethylsilane modified 1, 3-bis (oxiranylmethyl)-5-(2-propenyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-trione / diniconazole / 1-(4-chlorophenyl) vinylboronic acid pinacol ester / 4-triethoxysilyl vinylbenzocyclobutene copolymer, 5-8 parts of a foaming agent, 2-5 parts of a basic catalyst, 1-3 parts of anantioxidant, 5-10 parts of a plasticizer, 15-25 parts of a solid waste-based porous material, 3-5 parts of cordierite powder and 2- 5 parts of a coupling agent. The invention further discloses a preparation method of the heat-preservation and heat-insulation macromolecular environment-friendly material. The heat-preservation and heat-insulation macromolecular environment-friendly material disclosed by the invention is excellent in comprehensive performance, remarkable in heat preservation and insulation effect, low in manufacturing cost, good in environment friendliness, excellent in fire resistance, flame retardance, high temperature resistance, weather resistance and mechanical property and high in economic value, social value and ecological value.
Owner:HUNAN CHENLI NEW MATERIAL CO LTD
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