10 results about "Separation technology" patented technology

A plant originated alcohol soluble protein matrix and its preparation process are disclosed, belonging to the biological medical technology field. The plant originated alcohol soluble protein matrix is prepared by alcohol soluble protein micro sphere or heparin containing alcohol soluble micro sphere. Said plant originated alcohol soluble protein can be any of alcohol soluble protein of wheat, barley, rye, oat or corn. Said alcohol adopts C1-4 fatty alcohol. The preparation process of the plant originated alcohol soluble protein matrix adopts phase separation technology and dissolvent volatilizing technology

The invention discloses a system for removing tritium from high-humid air. The system comprises a tritium removing unit and a water collecting unit; the tritium removing unit comprises a gas booster pump, a flow controller, an inner pipe of a drying pipe, a catalytic reactor, an adsorber and a dew point meter, wherein the gas booster pump, the flow controller, the inner pipe, the catalytic reactor, the adsorber and the dew point meter are sequentially connected through a pipeline; the water collecting unit comprises a rotor flowmeter, an outer sleeve of the drying pipe, and a water collector,wherein the rotor flowmeter, the outer sleeve and the water collector are sequentially connected to an outlet of the adsorber; and the tritium-containing air containing more water enters the tritium removing unit, then sequentially passes through the gas booster pump, the flow controller, the inner pipe of the drying pipe, the catalytic reactor, the adsorber and the dew point meter, and then is discharged, and the field air discharged from the outlet of the adsorber sequentially passes through the rotor flowmeter, the outer sleeve of the drying pipe and the water collector and then is collected. The tritium is cleared in situ through tritium oxygen catalysis and gas-liquid separation technologies, the tritium component in the high-humid air can be removed in time under the high-humid background air condition, and a tritium-involving environment is effectively protected.

The invention belongs to the technical field of membrane separation, and relates to a refining and extracting filtering preparation process of dextran. The method comprises the steps of: first, filtering a crude product liquor of dextran by a micro-filtration membrane; second, filtering the filtrate in the first step by a first ultrafiltration membrane; and third, filtering the filtrate in the second step by a second ultrafiltration membrane, wherein trapped fluid is the refined dextran, the mean pore size of the first ultrafiltration membrane is 20-100nm, and the mean pore size of the second ultrafiltration membrane is 2-20mn or the molecular weight cut-off is 3-100kDa. According to the invention, the membrane separation technology and the pharmaceutical process are combined to filter and refine a dextran raw material, so that a dextran product with narrower distribution of molecular weight is high in purity, is safe and reliable in curative effect and has high economic and beneficial benefits, and the product quality is improved.

The invention relates to a method for preparing a high-performance hydrophilic modified polyacrylonitrile membrane by combining in-situ modification with a phase separation technology. The invention particularly relates to a preparation method for controlling pore size and separation performance of the polyacrylonitrile microporous membrane. The method comprises the following steps: performing in-situ reaction modification with phase inversion on polyacrylonitrile and an amino compound to form a film, wherein the chemical composition of the polymer and the performance of the membrane casting solution of the polymer can be changed by controlling the variety, the addition proportion and the reaction process parameters of the amino compound, and thereby diversified adjustment of the pore morphology, the structure, the surface composition and the separation performance of the membrane is realized, so that different application requirements are met. Compared with the prior art, the method has the advantages of simple and convenient preparation and excellent membrane performance, and can be applied to different separation occasions.

The invention relates to the field of microbial technology and especially relates to a use of Streptomyces sioyaensis metabolite in prevention and control of Botrytis cinerea. Llex cornuta endophyte separated from the llex cornuta living bodies in Hangzhou of Zhejiang province by an endophyte microorganism separation technology is identified as Streptomyces sioyaensis by microbial taxonomy and is named as Streptomyces sioyaensis 107. The Streptomyces sioyaensis 107 is preserved in the China general microbiological culture collection center on December 12, 2012 and has a preservation number of CGMCC No. 6984. Through liquid fermentation, the Streptomyces sioyaensis 107 can produce the active metabolites having effects of inhibiting plant fungal disease pathogenic bacteria such as Rhizoctonia solani and Thanatephorus cucumeris and is an important microbe resource in agriculture.

The invention discloses a preparation method for reducing the content of organic matter in desulfurization gypsum. The preparation method comprises clear water, a tank I, a tank II, a tank III, a centrifugal machine and a wastewater pipe; the clear water is connected with the tank I; the tank II is respectively connected with the tank I, the tank III and the centrifugal machine; the centrifugal machine is connected with the wastewater tank; and the other side of the wastewater tank is connected with the tank I. The preparation method comprises the following specific preparation steps: S1, sieving a desulfurization gypsum raw material; S2, weighing the volume of a mixed liquid; S3, removing floating organic matter on the surface of the mixed liquid in the tank I; S4, dispersing the organic matter in the tank II; and S5, conducting dewatering by the centrifugal machine. According to the characteristic that the specific gravities of materials are different, the floating separation technology is adopted, the organic matter content of the desulfurization gypsum of the power plant is subjected to primary removal, then the surfactant is added to disperse the remaining organic matter, and the surfactant has the characteristic of dispersing non-water-soluble substances; gypsum and impurities thereof can be separated through a centrifugal separation technology to achieve secondary removal; and the preparation method is simple in process, low in cost and easy for large-scale production.