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1630 results about "Solvent extraction" patented technology

Preparation method and application of retinol derivative

The invention belongs to the technical field of preparation of retinol derivatives, and particularly relates to a preparation method and application of a retinol derivative. The preparation method provided by the invention comprises the following steps: 1) mixing hydroxyethyl cellulose powder, water, inorganic acid and an oxidizing agent, carrying out heating reaction, and after the reaction is finished, cooling, filtering, washing and drying to obtain oxidized cellulose; 2) mixing and stirring retinol powder and hydroxyl silicone oil, and filtering after stirring to obtain hydroxyl silicone oil coated retinol; and 3) mixing the oxidized cellulose, the hydroxyl silicone oil coated retinol, a catalyst and a first organic solvent, carrying out a heating reaction, carrying out ultrasonic treatment on the reaction liquid after the reaction is finished, filtering after the ultrasonic treatment is finished, concentrating the filtrate, extracting with a second organic solvent, and drying the extract liquid to obtain the retinol derivative. The retinol derivative prepared by the invention has excellent photo-thermal stability.
Owner:广州柏为科技有限公司

Pressure transmission on-line monitoring mixing clarification extraction tank and tank body state early warning method

The invention relates to the technical field of solvent extraction, in particular to a pressure transmission online monitoring mixing clarification extraction tank and a tank body state early warning method, and the pressure transmission online monitoring mixing clarification extraction tank comprises a remote information receiver, an audible and visual alarm, a deformation spring, a pressure transmitter, a computer processor, a stirrer, a pulley, a liquid level sensor, a suspension, a traction rope, an extraction tank mixing chamber and an extraction tank clarification chamber; when the density of the mixed-phase fluid changes, buoyancy borne by suspension also changes, the traction rope causes variable tension to the pressure transmitter, the pressure transmitter uploads tension data to the computer processor to convert the tension data into mixed-phase fluid density data, the mixed-phase fluid density data are compared with a standard mixed-phase density index, and the density of the mixed-phase fluid is calculated. The water phase flow, the organic phase flow and the stirring rotating speed are automatically checked in real time, and when a computer processor finds a fault which cannot be automatically processed, an alarm is given to an operator through an audible and visual alarm and a remote information receiver, so that the operator intervenes in processing abnormities at the first time.
Owner:CHALCO GUANGXI RARE EARTH DEV CO LTD +1

Method for extracting and purifying flavone in litsea coreana through ultrasonic-assisted eutectic solvent

The invention discloses a method for extracting and purifying flavone in litsea coreana through an ultrasonic-assisted eutectic solvent, and belongs to the technical field of green processing of natural products. The invention provides a method for efficiently preparing litsea coreana flavone by integrating computer prediction, green solvent extraction and resin purification technologies. The method comprises the following steps: firstly, calculating and screening a deep eutectic solvent system with the highest affinity with the litsea coreana flavone on the basis of a COSMO-RS theoretical model, then coupling the optimized DES with an ultrasonic-assisted extraction (UAE) technology, and through the synergistic effect of the DES and the UAE technology, remarkably improving the extraction rate of the litsea coreana flavone and furthest keeping the biological activity of a target component; then, a macroporous resin dynamic adsorption-desorption purification process is linked, so that high-selectivity enrichment and impurity removal of the flavonoid compounds in the crude extract are realized, a high-purity product is obtained, and a complete process route from intelligent screening, efficient extraction to precise purification is finally formed.
Owner:CHONGQING ACAD OF AGRI SCI +1

Composition with high ultraviolet damage resistance as well as preparation method and application of composition

The invention discloses a composition with high ultraviolet damage resistance as well as a preparation method and application thereof, and particularly belongs to the technical field of skin care product raw materials. The composition with high ultraviolet damage resistance is prepared by performing solid-state fermentation on radix scutellariae roots, radix ligustici sinensis and radix puerariae through compound bacteria consisting of bacillus subtilis, lactobacillus bulgaricus and bacillus coagulans and then performing solvent extraction. The composition with high ultraviolet damage resistance has excellent effects of resisting oxidative damage and inhibiting inflammatory factors, and can achieve the effects of repairing skin barriers, resisting inflammation, relieving, efficiently promoting repair of after-sun skin and the like.
Owner:SHANGHAI ZHENGXIN BIOTECHNOLOGY CO LTD

Deep learning model-based berry tea quality spectrum sensing detection method

The invention discloses a deep learning model-based berry tea quality spectrum sensing detection method, which comprises the following steps of: acquiring near infrared spectrum data of a berry tea sample by using a portable spectrum sensing device, and preprocessing the acquired spectrum data; preparing a berry tea powder sample from the berry tea subjected to spectrum collection by using a grinding mill; preparing tea soup from the berry tea powder sample by using a solvent extraction method; determining the physical and chemical values of tea polyphenol and dihydromyricetin as quality indexes of the berry tea based on a conventional method; and preprocessing near infrared spectrum data of the berry tea, and inputting the preprocessed near infrared spectrum data into the detection quantitative model to quickly obtain a near infrared spectrum quality index detection result. According to the method, the spectral information of the raspberry tea sample is directly acquired by utilizing the portable spectrum sensing device, a complicated pretreatment process is not needed, and meanwhile, accurate and rapid prediction of the raspberry tea quality index is further realized by utilizing the deep learning model, so that an economical and feasible path is provided for sustainable development of the raspberry tea industry.
Owner:JIANGSU UNIV

Component detection method suitable for plant extract

The invention discloses a component detection method suitable for a plant extract, and relates to the technical field of plant extract detection, and the component detection method comprises the following steps: S1, carrying out enrichment treatment on a target component by using two-phase liquid-liquid extraction; s2, performing multi-dimensional attribute mapping and component factor construction by using the initial enrichment liquid; s3, performing correlation feature constraint calculation by using the target component response tensor; s4, performing ideal spectrum construction and response difference analysis by using the to-be-compared spectrum feature set; s5, performing mapping analysis by using ideal and actual spectrum residual signals; s6, performing spectrum correction by using the standard comparison spectrum set; the selectivity of target component enrichment is improved by setting biphasic solvent-liquid-liquid extraction, efficient extraction of target components in a plant extract complex system is achieved, compared with existing single solvent extraction or solid-phase extraction, the method has the advantages that the target components are optimally distributed among liquid phases by regulating and controlling interaction among solvents, and the extraction efficiency is improved. And co-extraction of non-target components is reduced.
Owner:汉中天然谷生物科技股份有限公司

Method for separating zirconium and hafnium through solvent extraction

The invention relates to a method for separating zirconium and hafnium through solvent extraction, and belongs to the technical field of hydrometallurgy. According to the method, zirconium and hafnium separation is achieved through a solvent extraction method, the novel extraction agent is adopted, the synergistic effect of the modified imidazole ionic liquid, the amide compound and tributyl phosphate is utilized, the process steps of solution acidification, extraction agent extraction, sulfuric acid solution washing and reverse extraction are carried out, and the zirconium solution and the hafnium solution are obtained through separation. The process method is simple, the separation effect is good, and the separation purity is high.
Owner:SHANGHAI YOURAN HIGH PURITY NEW MATERIALS CO LTD

Superconductive carbon black co-production method based on directional refining of catalytic slurry oil and product of superconducting carbon black co-production method

The invention discloses a superconducting carbon black co-production method based on directional refining of catalytic slurry oil and a product thereof, and belongs to the technical field of carbon black preparation, and the method comprises the following steps: mixing the catalytic slurry oil and catalytic circulating oil to obtain mixed slurry oil, and adding a deliming agent for settling separation to obtain purified slurry oil; carrying out continuous solvent extraction on the obtained purified oil slurry to respectively obtain an aromatic component and a heavy component; carrying out thermal polycondensation reaction on the obtained aromatic component in a magnetic field environment in the presence of a catalyst and a cross-linking agent, and then carrying out supercritical fluid extraction to obtain spinnable mesophase pitch; carrying out slurry reactor hydrogenation deconstruction on the obtained heavy component to obtain stable micromolecular carbon black raw oil, mixing the carbon black raw oil with a nitrogen source and a template precursor, carbonizing, and carrying out acid pickling to obtain the superconducting carbon black; through a heavy oil slurry reactor hydrogenation deconstruction'doping-template 'synergistic carbonization strategy, the superconductive carbon black with nitrogen / phosphorus co-doped and developed hierarchical porous structure is constructed in situ by a one-step method.
Owner:WANGDA GRP CO LTD +1

Process for producing oligosaccharide from lignocellulose and recycling acid

The invention discloses a process for producing oligosaccharide from lignocellulose and performing acid circulation, which comprises the following steps of: (1) performing swelling reaction on the lignocellulose by using more than 70wt% of inorganic acid solution to obtain high-acid biomass candy pomace; (2) extracting the high-acid biomass candy pomace with an organic solvent to obtain low-acid biomass candy pomace and an acid-containing organic phase; (3) removing insoluble substances of the low-acid biomass candy pomace to obtain an oligosaccharide solution; and (4) adding water into the acid-containing liquid obtained in the step (2) for reverse extraction, standing and layering to obtain an acid solution and an organic phase. According to the method, the acid in the high-acid and solid biomass candy pomace is effectively recycled, the process is efficient and mild, energy does not need to be additionally provided, and all used reagents can be recycled and reused.
Owner:NANJING TECH UNIV

Supercritical entrainment extraction device for total flavonoids in folium cortex eucommiae

The invention discloses a supercritical entrainment extraction device for total flavonoids in folium cortex eucommiae, and relates to the technical field of pharmaceutical production. Comprising a fluid supply mechanism and an extraction mechanism, the fluid supply mechanism comprises a material mixing tank, a stirring pipe is rotatably arranged in the material mixing tank, a plurality of strip-shaped shells are fixedly arranged on the surface of the stirring pipe, and a plurality of nozzles are fixedly embedded in the surfaces of the strip-shaped shells. A dispersing disc and a grinding roller are arranged in the extraction tank, eucommia ulmoides leaves on the surface of the dispersing disc can be ground and smashed, and meanwhile, supercritical carbon dioxide mixed fluid is sprayed to the surfaces of the eucommia ulmoides leaves on the surface of the dispersing disc through a spray head on the surface of a rotating arm, so that the mixed fluid and the eucommia ulmoides leaves fully react; by utilizing the dissolving capacity of the supercritical carbon dioxide mixed fluid, a worker can conveniently extract the total flavonoids from the folium cortex eucommiae dissolved solution, so that the residual of solvent toxicity under the traditional solvent extraction condition can be effectively avoided, and meanwhile, the poison to a human body and the pollution to the environment in the extraction process are also prevented.
Owner:山东现代学院

Method for preparing polyolefin film by using volatile solvent

PendingCN119189378Aprevent thermal degradationlower melting temperatureFlat articlesPolymer sciencePolyolefin
The invention relates to a method for preparing a polyolefin film by using a volatile solvent, which comprises the following steps: (1) weighing polyolefin resin and a volatile organic solvent, stirring and fully mixing to obtain a uniform mixed solution; (2) feeding the obtained uniform mixed solution into a double-screw extruder to obtain a high-temperature melt, and carrying out curtain coating and cooling to obtain a membrane; and (3) stretching the obtained membrane to obtain a porous membrane, and carrying out heat setting to obtain a finished product membrane. Compared with the prior art, the method has the advantages that the solvent extraction process is reduced, the porosity of the membrane is adjustable in the range of 40-85%, the preparation process is green and environment-friendly, and the method has potential application in the fields of battery diaphragms, water treatment, breathable and moisture permeable fabrics and the like.
Owner:SHANGHAI RES INST OF CHEM IND CO LTD

Preparation method of crocodile hydrolyzed protein zinc skin care product

The invention discloses a preparation method of a crocodile hydrolyzed protein zinc skin care product, and relates to the technical field of skin care. The method comprises the following steps: step a, pretreating raw materials: taking fresh crocodile meat and bones, cleaning, mechanically crushing until the particle size is less than 5mm, and adding water according to the ratio of 1: (3-5) to prepare homogenate; step b, performing three-step enzymolysis, namely performing enzymolysis by adopting alkaline protease, flavourzyme and zinc chelating enzyme in sequence; according to the constructed technology of three-step enzymolysis and three-stage membrane separation, accurate preparation of crocodile protein zinc is achieved, and the zinc chelating rate is increased to 90% or above through the gradient effect of alkaline protease, flavourzyme and zinc chelating enzyme and directional release of zinc binding sites and is remarkably higher than that of a traditional single-enzyme hydrolysis technology; meanwhile, a combined purification technology of a ceramic membrane, an ultrafiltration membrane and a nanofiltration membrane is adopted to replace chemical precipitation and organic solvent extraction, so that the completeness of active ingredients is reserved, the risk of environmental pollution is reduced, and the method conforms to the green manufacturing trend of food industry.
Owner:GUANGZHOU TITANIUM IND HLDG CO LTD +1

Method for preparing vanadyl sulfate electrolyte by using waste residue oil hydrogenation catalyst

The invention belongs to the field of waste residue oil hydrogenation catalyst recovery, and particularly relates to a method for preparing vanadyl sulfate electrolyte by using a waste residue oil hydrogenation catalyst. According to the method, the waste residue oil hydrogenation catalyst is used as a raw material, the high-purity vanadyl sulfate solution is prepared through the preparation procedures of roasting, leaching, impurity removal, reduction, extraction and reverse extraction, on one hand, the problem of solid waste treatment is solved, on the other hand, vanadium is selectively recycled from the high-concentration vanadium-containing solution through a solvent extraction method, and the production cost is greatly reduced. And the obtained vanadyl sulfate solution is high in purity, few in impurities and high in production efficiency.
Owner:LINQU HENGHUI NEW MATERIAL CO LTD +1

Method for comprehensively recovering waste hydrogenation catalyst with low energy consumption

The invention relates to the technical field of recovery processes of waste oil refining catalysts, in particular to a low-energy-consumption method for comprehensively recovering a waste hydrogenation catalyst. The method comprises the following steps: firstly, carrying out vacuum pyrolysis on the waste hydrogenation catalyst to obtain heavy oil and a deoiled waste catalyst; then the deoiled waste catalyst is smashed and then subjected to oxidizing roasting to remove sulfur and carbon in the waste catalyst, and roasted clinker is obtained; carrying out acid leaching and solid-liquid separation on the roasted clinker to obtain a leaching solution and leaching residues; wherein valuable metal ions in the leachate are respectively recovered by using a solvent extraction method; and after leaching residues are subjected to secondary leaching through sodium hydroxide, aluminum in the leaching residues is recycled, and a sodium metaaluminate solution is obtained. According to the technical scheme, selective recovery of molybdenum, vanadium, nickel and aluminum in the waste hydrogenation catalyst can be achieved, the recovery rate is high, energy consumption is low, pollution of the waste hydrogenation catalyst to the environment can be relieved, and sustainable utilization of non-ferrous metal resources can be achieved.
Owner:凌江华 +4

Method for preparing spinnable mesophase pitch and carbon fiber from coal tar fraction

The invention relates to a method for preparing spinnable mesophase pitch and carbon fibers from coal tar fractions, and belongs to the technical field of carbon materials. The method comprises the following steps: distilling and extracting aromatic hydrocarbon fractions in different distillation ranges from coal tar, activating the aromatic hydrocarbon fractions in one or more distillation ranges as raw materials, and carrying out non-catalytic polymerization reaction on one or more activated coal tar fractions and one or more non-activated coal tar fractions at a low temperature, and performing high-temperature polymerization reaction to obtain matrix asphalt, and performing reduced pressure distillation treatment, solvent extraction or inert gas purging to obtain the spinnable mesophase asphalt. The spinnable mesophase pitch has wide-area streamline optical texture distribution, good directional arrangement and orderliness, the mesophase content can reach 100%, the softening point is low, the coking value is high, the ash content is low, and the structure is controllable. The carbon fiber prepared based on the mesophase pitch is short in required oxidation time and has excellent performance.
Owner:INNER MONGOLIA RESEARCH INSTITUTE CHINA UNIVERSITY OF MINING AND TECHNOLOGY (BEIJING) +1

Annular centrifugal extractor with solid separation part to separate solid particles present in solvent extraction fluid and a process for the same

This disclosure relates to an annular centrifugal extractor with Solid Separation Part to Separate Solid Particles Present in Solvent Extraction Fluid. In order to remove solid particles from the solution, a solid separation part / rotating bowl is attached to rotating bowl in such a way that solid particles settle inside the solid separation part. This solid separating centrifugal extractor contains two parts: (I) upper part which acts as a liquid-liquid separator to separate aqueous and organic solution used in solvent extraction operation and (II) bottom part which acts as a solid separator to separate solid particle present in solvent extraction liquids. The bottom rotating rotor is coupled with upper rotating rotor by threading arrangement. Both the rotating rotors are confined within a stationary cylinder. Dispersion with solid particles entering inside the rotating bowl is deflected towards the wall of the rotating cylinder by deflecting baffle by centrifugal sedimentation.
Owner:SEC

Method for improving in-vivo and in-vitro antioxidant activity of pomegranate peel polyphenol extract through combined enzymolysis of tannase and beta-glucosidase

The invention discloses a method for improving in-vivo and in-vitro antioxidant activity of pomegranate peel polyphenol extract through combined enzymolysis of tannase and beta-glucosidase, and relates to the technical field of food science and biology. The pomegranate peel polyphenol extract provided by the invention is obtained from pomegranate peel powder through solvent extraction. According to the present invention, tannase and beta-glucosidase are adopted to perform single or combined enzymolysis on the pomegranate peel polyphenol extract, and the determination on the in vitro antioxidant activity of the pomegranate peel polyphenol extract shows that the antioxidant activities of DPPH and ABTS after the combined enzymolysis are improved by 29.84% and 29.30% compared with the antioxidant activities of the untreated polyphenol extract; the UPLC-ESI-QTOF-MS is used for identifying and analyzing the components of the enzymatic hydrolysate, the content of macromolecular ellagic tannin is obviously reduced, and the content of micromolecular ellagic acid and gallic acid is increased. The enzymolysis polyphenol is applied to D-galactose induced oxidative stress mice, and the result shows that the oxidative damage relieving effect of the enzymolysis polyphenol on the mice is better than that of untreated polyphenol.
Owner:NANCHANG UNIV

Method for producing needle coke by using FCC (fluid catalytic cracking) slurry oil

The invention provides a method for producing needle coke by using FCC slurry oil, and belongs to the technical field of needle coke, the production method comprises the steps of filtration separation, reduced pressure distillation, solvent extraction, hydrotreatment, carbonization coke formation and calcination; in hydrotreatment, a hydrogenation catalyst comprises a composite carrier and 10-45% by mass of active elements, and the active elements comprise Ni and Mo in a molar ratio of 1: (3-6), and at least one of Co, V or W; the composite carrier comprises the following components in percentage by mass: 50-80% of aluminum oxide and 20-50% of silicon oxide; the specific surface area of the composite carrier is 200-400m < 2 > / g, the composite carrier is of a hierarchical pore structure with micropores, mesopores and macropores, and the ratio of the pore volume of the micropores to the total pore volume is lt; the pore volume of mesopores accounts for 50-65% of the total pore volume, and the pore volume of macropores accounts for 30-50% of the total pore volume. The self-made hydrogenation catalyst is used for hydrotreating the raw materials, so that the activity of the catalyst and the selectivity of hydrodesulfurization can be effectively improved, and the desulfurization rate of the materials is obviously improved.
Owner:LUOYANG HONGLIAN NEW MATERIAL TECH CO LTD

Direct coal liquefaction residue solvent extraction deliming method, refined asphalt and application

The invention discloses a direct coal liquefaction residue solvent extraction deliming method, refined asphalt and application, and relates to the technical field of solid waste resource treatment. According to the method, process conditions and process parameters are reasonably controlled, the thermal dissolution effect of an extraction agent and the liquefied residues is improved, a scale inhibitor composed of a multi-element alkyl organic matter, an auxiliary and coking washing oil is mixed with the extraction agent, then the ground liquefied residues are added into a material obtained through mixing, and the extraction agent and the liquefied residues are mixed uniformly. The slurry is prepared by controlling the stirring speed, the reaction temperature and the like; due to the addition of the scale inhibitor, the concentration of the residue extraction liquid is improved, and the treatment capacity and efficiency are enhanced; and a filter used for precision filtration adopts a stainless steel metal sintered filter element, so that the filter is resistant to higher temperature and pressure, the service life can be prolonged, and the stripping of viscous materials such as asphaltene in the liquefied residues is facilitated. The ultralow-ash refined asphalt prepared by the method can be used as a high-quality raw material of a high-end carbon material.
Owner:CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD +2

Method for preparing anhydrous lithium chloride from salt lake brine with low magnesium-lithium ratio

The invention belongs to the technical field of inorganic salt chemical industry. The invention provides a method for preparing anhydrous lithium chloride by using salt lake brine with low magnesium-lithium ratio, which comprises the following steps: pumping clear salt lake brine with low magnesium-lithium ratio into a plate-and-frame filter press for filtration, and sequentially performing microporous filtration and ultrafiltration on filtrate to obtain primary refined brine; filtering the primary refined brine through a nanofiltration membrane device to obtain secondary refined brine; allowing the secondary refined brine to pass through chelating resin to obtain magnesium-removed brine; mixing the magnesium-removed brine with an alkali solution, adjusting the pH value of the mixed solution, and pumping the mixed solution into a continuous extraction device for solvent extraction to obtain a lithium chloride solution; and evaporating and drying the lithium chloride solution in sequence to obtain an anhydrous lithium chloride product. The anhydrous lithium chloride product is prepared by adopting a nanofiltration membrane separation and solvent extraction combined process, the recovery rate of lithium ions is higher than 80%, the fresh water consumption of 1 ton of lithium chloride product is less than 50 cubic meters, the production cost is low, the chemical units are few, and the automation degree is high.
Owner:CITIC (BEIJING) SALT IND TECHNOLOGY INNOVATION RESEARCH INSTITUTE CO LTD

Leaching method of neodymium-iron-boron waste and method for extracting and separating iron and neodymium from leachate

The invention provides a method for leaching neodymium-iron-boron waste, and particularly relates to a method for extracting and separating iron and neodymium from leachate. According to the leaching method disclosed by the invention, the degradable citric acid is used for replacing hydrochloric acid or sulfuric acid which is heavily polluted to be used as a leaching agent, so that an excellent leaching effect is achieved, and the pollution problem of acid wastewater is greatly controlled; the lixivium is directly used for solvent extraction and separation of iron and neodymium in the lixivium, and an excellent separation effect is achieved; the leaching efficiency of iron and neodymium can reach 99% or above; according to the method for extracting and separating the iron and the neodymium from the leachate, the leachate serves as a water phase for extraction, the selectivity of N235 and the high efficiency of P350 are integrated, the iron is efficiently extracted from the mixed solution, the single-stage extraction efficiency of the iron in the leachate is higher than 99%, the extraction efficiency of the neodymium is lower than 10%, and the separation coefficient of the iron and the neodymium can reach 13000; meanwhile, the single-stage reverse extraction efficiency of iron can reach 80% or above, and deep separation of iron and neodymium is achieved.
Owner:JIANGXI UNIV OF SCI & TECH

Green preparation method and application of anti-glycation tea extract

The invention relates to a green preparation method and application of an anti-saccharification tea extract, and belongs to the technical field of biology. The preparation method of the tea extract comprises the following steps: extracting tea by using a deep eutectic solvent to obtain the tea extract, and carrying out deproteinization and decoloration to obtain the tea extract. The hydrogen bond acceptor of the deep eutectic solvent comprises proline or betaine, and the hydrogen bond donor of the deep eutectic solvent comprises xylitol or glycerol. By utilizing the NaDES extraction technology, effective components can flow out by efficiently breaking cell walls, so that the extraction efficiency of tea active components represented by tea polyphenol is effectively improved; the selected NaDES solvent is natural, green and easy to obtain; the tea extract disclosed by the invention has an anti-saccharification effect, blocks glycosylation reaction, reduces and inhibits generation of AGEs, improves the problems of dark skin, skin laxity and aging caused by saccharification, reduces collagen loss, keeps skin elasticity and delays skin aging.
Owner:SHENZHEN SHINESKY BIOLOGICAL TECH CO LTD +2

Equipment and process for efficiently and continuously extracting astaxanthin by low-frequency microwave-assisted eutectic solvent method

The invention discloses equipment and a process for efficiently and continuously extracting astaxanthin by a low-frequency microwave-assisted eutectic solvent method, and belongs to the technical field of bioactive substance extraction. The method for extracting astaxanthin by the low-frequency microwave-assisted eutectic solvent method comprises the following steps: performing low-frequency microwave pretreatment on a eutectic solvent to obtain a high-temperature pretreated eutectic solvent; cooling the pretreated eutectic solvent, then mixing the pretreated eutectic solvent with crustacean byproducts, performing eutectic solvent extraction treatment, performing ultrasonic-assisted extraction in the process, and then performing solid-liquid separation to obtain filtrate; mixing the filtrate with an extraction solvent, and extracting to obtain an extraction solvent phase containing astaxanthin and a eutectic solvent phase; and removing the extraction solvent in the extraction solvent phase containing the astaxanthin to obtain an astaxanthin product.
Owner:ZHONGKAI UNIV OF AGRI & ENG +1

System and method for triglyceride manufacture

A method can include receiving an oxygenate sample, fractioning the oxygenate sample into one or more fractions, and separating the fractions (e.g. using FAME fractionation, FAEE fractionation, crystallization, solvent extraction, or other similar methods). The fractions can optionally be separated independently. The method can optionally include esterifying carboxylic acids separated from the fractions with glycerol and deodorizing the glycerides.
Owner:SAVOR FOODS LTD

Method for recovering Mo and Fe from direct coal liquefaction oil residue

PendingCN120591557AIron compounds preparationIron oxides/hydroxidesPhysical chemistryHydrometallurgy
The invention discloses a method for recovering Mo and Fe from direct coal liquefaction oil residues, and belongs to the technical field of hydrometallurgy. The method comprises the steps of solvent extraction, roasting enrichment, wet leaching, extracting agent extraction, ammonia water reverse extraction and evaporative crystallization, and ammonium molybdate and Fe (OH) 3 are obtained. Wherein in the wet leaching process, a leaching aid and sulfuric acid are jointly used for leaching, so that Ca and Si in the oil residues are left in leaching residues, and Mo, Fe, Al and the like enter a solution. The method comprises the following steps: simultaneously extracting Mo and Fe from a solution by using an extracting agent, precipitating Fe in a Fe (OH) 3 state by using an ammonia water reverse extraction method, leaving Mo in a reverse extraction solution in the form of ammonium molybdate, and further evaporating and crystallizing the reverse extraction solution to obtain the ammonium molybdate. According to the method, two valuable metals Mo and Fe in the direct coal liquefaction oil residue can be effectively recovered, and resource recycling is facilitated.
Owner:YULIN ZHONGKE CLEAN ENERGY INNOVATION RES INST +2

Extraction method for strengthening low-concentration rare earth elements and equipment for implementing extraction method

The invention relates to an extraction method for strengthening low-concentration rare earth elements and equipment for implementing the extraction method. The extraction method is a continuous extraction process based on the combination of a microfluid technology and a solvent extraction technology, and efficient enrichment and recovery of low-concentration rare earth elements are realized through combined use of a gas-liquid-liquid three-phase system and an extraction agent. The extraction method provided by the invention has the advantages of high mass transfer efficiency, simple operation, recyclable extraction agent, high extraction efficiency, good stability and the like, and is suitable for enrichment and recovery of low-concentration rare earth elements on an industrial scale under the condition of a large phase ratio (greater than 50).
Owner:TSINGHUA UNIVERSITY

Imidazole derivative-organic phosphoric acid combined extractant and application method thereof

The invention discloses an imidazole derivative-organic phosphoric acid combined extracting agent and an application method thereof, and belongs to the technical field of hydrometallurgy. The molar ratio of the imidazole derivative to the organic phosphoric acid is (10: 1)-(1: 10). The combined extraction agent can be used for extracting nickel, cobalt and manganese from a solution containing one or more nickel, cobalt and manganese. The selectivity of the solvent extraction system to nickel, cobalt and manganese is far higher than that of impurity metal ions such as calcium, magnesium, lithium, sodium and potassium, the extraction system is good in stability, free of emulsification phenomenon and third phase generation, easy to operate, low in cost and environmentally friendly. In lithium battery recovery and other systems containing coexistence of nickel, cobalt, manganese and calcium, magnesium and lithium, the solvent extraction system is particularly good in selectivity, and efficient co-extraction of nickel, cobalt and manganese can be achieved. When a mixed solution and a weak acid solution are treated, purification and concentration of target metal can be synchronously achieved, the recovery period is greatly shortened, the recovery rate is increased, and the method has great significance in efficient utilization of nickel-cobalt-manganese resources.
Owner:UNIV OF SCI & TECH BEIJING

Production method of high-structure carbon black based on petroleum-based composite raw oil

A production method of high-structure carbon black based on petroleum-based composite raw oil comprises the following steps: S1, performing fraction cutting on the petroleum-based composite raw oil to obtain crude carbon black raw oil; s2, carrying out solvent extraction on the crude carbon black raw oil to obtain aromatic-rich carbon black raw oil; and S3, vaporizing and cracking the aromatic-rich carbon black raw oil to generate the high-structure carbon black. The method for producing the high-structure carbon black based on the petroleum-based composite raw material oil is different from the domestic existing production process of coal tar and anthracene oil, and the structure degree of the carbon black product can be improved by pretreating the petroleum residual oil and the tail oil, so that the production of the high-structure carbon black product is realized, the domestic raw material source of the high-structure carbon black is broadened, and the production cost of the high-structure carbon black is reduced. And the competitiveness of the product is improved.
Owner:CHINA RUBBER GRP CARBON BLACK RES & DESIGN INST +1

Colloid, porous carbon and preparation method and application thereof

The invention discloses colloid, porous carbon and a preparation method and application thereof. The preparation method of the colloid comprises the following steps: S1, extracting aromatic hydrocarbon-rich oil by adopting a first solvent to obtain a soluble component which is a component A; wherein the first solvent is selected from one or more of o-dichlorobenzene, dipropyl ether and 3-pentanone; s2, the component A is adsorbed to an aluminum oxide chromatographic column, petroleum ether or n-heptane, methylbenzene and a second solvent are sequentially adopted to wash the chromatographic column, then desorbed matter is obtained, and the second solvent is a mixture of methylbenzene and ethyl alcohol. The colloidal pyrrole is high in nitrogen content, and the porous carbon prepared from the colloidal pyrrole is excellent in conductivity.
Owner:NINGBO SHANSHAN SILICON-BASED MATERIALS CO LTD

Lucid ganoderma liver-protecting pill and preparation method thereof

The invention discloses a ganoderma lucidum liver-protecting pill and a preparation method thereof, and the ganoderma lucidum liver-protecting pill comprises the following components: 8-20% of ganoderma lucidum polysaccharide extract, 5-15% of coptis chinensis extract, 4-10% of pulvis fellis saponin extract, 3-8% of oriental wormwood, 2-8% of taurine, 1-3% of vitamin E and 2-6% of scleroprotein (ganoderma lucidum sclerotium extract). The auxiliary materials comprise microcrystalline cellulose, corn starch, licorice extract, polyvinyl alcohol and the like, and the balance is 100%. Therefore, the problem of ingredient inactivation caused by traditional high-temperature / solvent extraction is solved through process innovation (such as supercritical CO2 pressure 300bar / enzymolysis pH 5.0 parameter optimization), the dissolution rate is increased to be more than or equal to 90% in 30 minutes (traditional pills need 45 minutes and only 75%), the limitation of single ingredient liver protection is broken through through the synergistic effect of the composite ingredients, and the liver protection effect is improved. Animal experiments prove that a liver injury marker ALT / AST can be reduced by more than 50%, the hepatic fibrosis area can be reduced by 40%, the degradation rate of the active ingredients within 6 months in a stability test is less than or equal to 5%, and the comprehensive bioavailability is improved by 30% compared with that of a traditional product.
Owner:李乃新