1178 results about "Extraction ratio" patented technology

The invention discloses an edible and medical fungus cell component comprehensive extraction method and use of extract, which belong to the technical field of natural product extraction and application. The method comprises: breaking walls of the cells of the edible and medical fungi by combining an enzymic process and ultrasonic waves; extracting the extract and fungus slag by processes of water extraction, alcohol extraction and fat extraction in different sequences to obtain various nutritive components and bioactive components, such as cellulose, protein, nucleic acid, polysaccharide and fatty acid. In the invention, due to the adoption of a wall breaking-first and extraction-second scheme, the extraction rate of the cell components of the edible and medical fungi is improved considerably; the extract is extracted by water extraction, alcohol extract and fat extraction in turn and the fungus slag is extracted by fat extraction, alcohol extraction and water extraction in turn, so the flavor of the edible fungi is retained effectively; the various cell components of the edible and medical fungi serving as raw materials are extracted comprehensively and further developed; and the extracted components are natural materials, have both nutritive and health-care and pharmacological effects and can be made into various products according to the characteristics of the extracted components.

The present invention relates to a manufacturing method of refining rice bran top oil, which can effectively refining top oil from the rice bran and satisfy the people requirement to the health dieting. The invention includes the following steps: (1) crude oil filtering; (2) phosphoric acid degumming and light alkali alkali refining; (3) washing, drying; (4) dewaxing; (5) a primary decolorizing; (6) physical deacidification; (7) secondary alkali refining; (8) iron removing; (9) washing; (10) drying; (11) secondary decolorizing; (12) deodorization; (13) degreasing. The invention adopts a mode of combining the physical refining and chemical refining to realize a large-scale production of the rice bran top oil, provides a favorable technique to the rice bran deep-processing, improves the extraction rate from traditionally 55-60% to 75-80%, saves materials and reduces environmental pollution, has huge economic and social benefits. The invention is a major innovation to the edible rice bran oil production.

The invention relates to a method for the underground in-situ extraction of a hydrocarbon compound in an oil shale, which comprises the following steps: arranging at least one working well and one production well in an enclosed working region where the hydrocarbon compound in the oil shale is extracted, communicating the bottoms among the working wells by directional drilling after a drilling well enters an oil shale ore layer, injecting water and inert gas water vapor into the working well to form a near-critical water microenvironment, cracking the oil shale into organic compounds with different chain lengths to form an oil-water mixture, lifting the oil-water mixture to the ground through the production well, and obtaining the hydrocarbon compound through an oil-water separating system. The heat utilization ratio is improved through a multi-well integrated heat circulating system, the extraction ratio of hydrocarbon substances is greatly improved through repeated oil-water separating and circulating processes, and the technical process is shortened. A water micro-pool is formed after an oil shale layer is overflowed by water, the cracking of the oil shale can be realized within3 to 5 hours after a near-critical state is reached, and more energy sources and time are saved than an underground dry distillation method.

The invention discloses a method for the ultrasonic extraction of steviosides. Smashed dry leaves of stevia rebaudiana serve as raw material; based on the characteristic that an ultrasonic cavitation can reinforce the extraction of active ingredients in plants, the solvent and the smashed raw materials flow in opposite directions, and the extract of the stevia rebaudiana is prepared by immersed extraction and ultrasonic extraction; white powder of the stevia rebaudiana is prepared by flocculating, filtering, absorbing, decolorizing, exchanging, concentrating, spray drying and the like; the stevioside content of the products is 85 to 98 percent. In the invention, the extraction time is only 10 to 60 minutes; the extraction rate can reach 95 to 99.9 percent; the temperature of the extraction solvent is only 10 to 40 DEG C; and the mass-to-volume ratio of the dry leaves to the solvent is only 1: 10-40 (kg: L). The method has the advantages of short extraction time, high extraction rate, low consumption of solvent, clean and sanitary production process and large scale and industrial continuous production; and the produced stevioside products have high purity and good quality.

This invention discloses a method to remove high-concentration hydroxybenzenes from coal-gasification sewage, that is, coal-gasification sewage containing hydroxybenzenes and isobutyl methyl ketone as extracting solvent are mixed and separated so as to obtain solvent phase and remnant aqueous phase liquid. Solvent and crude hydroxybenzene are extracted from the solvent phase by distillation. Multiple-class reflux extraction is carried out towards remnant aqueous phase liquid and rudimental solvent is further extracted from the extract. Facilities involved in this method include a static mixer, an oil-water separator, a hydroxybenzene distillation tower and an extraction tower. Extracting coal-gasification sewage containing high-concentration hydroxybenzenes with the method provided by this invention, total hydroxybenzene extraction ratio can be as high as 92%. Besides, it also has the advantages of simple technique, soft conditions and recyclable extraction solution.

Provided is a method for preparing high-purity magnesium oxide with high boron salt lake brine. Salt lake brine is evaporated through a salt pan, concentrated to crystallize potassium sulfate, sodium chloride and potassium chloride and is drawn with lithium in adsorption mode so as to obtain master sauce brine containing magnesium and boron. Concentrated sulfuric acid is added into master sauce brine for reacting, and coarse boracic acid and acidized brine are obtained after cooling and filtering. Potential of hydrogen (pH) value of acidized brine is adjusted to be 5.5-6.5, and acidized brine passes through ion exchange resin adsorbing boron. When boron concentration in effluent liquid is higher than 5 mg / L, brine is not injected, boron-removed brine is obtained, then boron-removed brine and ammonium chloride solution are filled with ammonia for stirring and to produce magnesium sedimentation reaction, reaction temperature ranges from 60 DEG C to 80 DEG C, pH ranges from 7.5 to 8.0, the reaction is stopped when concentration of free ammonia reaches 1.8-2.2 mol / L, and magnesium hydroxide and magnesium sedimentation mother solution are obtained. Magnesium oxide is obtained by calcining magnesium hydroxide, content of magnesium oxide is larger than 99.8%, and magnesium extraction ratio is larger than 90%. Sedimentation mother solution adopts lime to steam ammonia, and generated ammonia circulates to magnesium sedimentation reaction. Mother solution after ammonia steaming is evaporated, concentrated and crystallized to obtain calcium chloride. Ion exchange resin adsorbing boron is washed, analyzed and regeneratively cycled for use. Boron-containing analysis solution is concentrated and cooled to pick up coarse boracic acid, and coarse boracic acid is recrystallized to obtain refined boracic acid with purity larger than 99%. High-purity magnesium oxide prepared by the method is high in purity, good in economic benefit, free of environment pollution, strong in operability and favorable for industrial production.

The invention provides a system and a method for extracting microprotein from sludge through hydrolysis, relating to the field of sewage and sludge treatment. The system comprises a sludge storage device, a sludge conveying device, a mixing device, a hydrolysis reaction device, a flash distillation device, a solid-liquid separation device, a residue collecting and conveying device, a filtrate collecting device, a preheating device, an evaporation concentration device, a drying device, a waste gas collecting device, a waste gas treatment device, a waste gas discharge device and a process waterrecovery device. The extraction method comprises the following steps of: completely hydrolyzing activated sludge, flash distilling, cooling, carrying out solid-liquid separation, and concentrating the filtrate to obtain the microprotein solution product with the concentration of 5%-40% by mass percentage or drying to obtain a microprotein dry powder product. When used for extracting microprotein from sludge through hydrolysis, the invention has the advantages of low energy consumption, high production efficiency and high extraction ratio of microprotein, and the microprotein products have excellent performance and better foaming performance than foaming agents in market.

The invention relates to a method for comprehensively extracting effective ingredients in tea. The method comprises the following steps of: with a faintly acidic water solution as a main extraction solvent and a certain amount of organic solvent as an auxiliary extraction solvent, carrying out step-by-step extraction on water extracts to obtain four effective ingredients, namely tea polyphenol, caffeine, tea polysaccharide and theanine; and meanwhile, extracting tea protein from tea residues by using an alkali dissolution and acid deposition method. According to the method, as water is used as the main solvent, the cost is low, the reactions are mild and active ingredients are favorably preserved; as a certain amount of organic solvent is used as the auxiliary extraction solvent, the problems of overhigh cost and product pollution caused by use of a large amount of organic solvents are solved; meanwhile, five effective ingredients, namely the tea polyphenol, the tea polysaccharide, the caffeine, the theanine and the tea protein are extracted, and therefore high extraction rate, high purity and high utilization rate of tea are achieved; the solvents are recycled in the extraction process, so that the preparation cost is reduced; and no alkali and acid waste liquor is discharged in the overall process, and therefore the method is environment-friendly. The overall preparation flow is high in efficiency and low in cost, and therefore the method has a favorable application value.