2539results about "Solid solvent extraction" patented technology

The invention provides a method and equipment for producing Li2CO3 based on coordinated roasting of lepidolite and spodumene. The method for producing Li2CO3 based on coordinated roasting of lepidolite and spodumene comprises the steps that S1, ore pretreatment is conducted, specifically, lepidolite and spodumene with the particle size smaller than 5 mm are evenly mixed according to the mass ratio of 1: (1-3), and the mixed ore is finely ground till the particle size is smaller than 75 microns; s2, additive mixing, wherein a composite additive is added into the mixed ore obtained after fine grinding and evenly mixed with the ore, and the composite additive is composed of fluoride, sulfate and a fluxing agent; and S3, coordinated roasting, wherein the mixed materials are fed into a rotary kiln to be roasted. According to the method for producing Li2CO3 based on coordinated roasting of the lepidolite and the spodumene, the lepidolite and the spodumene are roasted in a coordinated mode, the structural and chemical property differences of the lepidolite and the spodumene are utilized, advantage complementation is achieved, the overall extraction rate of lithium is increased, compared with a single lithium extraction technology, the lithium recovery rate can be increased by 10%-20%, and the waste residue generation amount is reduced.

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.

The invention provides a method for efficiently extracting tea polyphenol and tea polysaccharide and application, and belongs to the technical field of plant extraction.The extraction method comprises the following steps that tea leaves are pre-cooled and rolled and cut to obtain pretreated tea leaves, then the pretreated tea leaves are added into water to be mixed, biological enzyme is added for ultrasonic enzymolysis, filtering is conducted, and filtrate and tea residues are obtained; adding tea residues into water, mixing, adding an auxiliary agent, and carrying out low-temperature plasma treatment and filtration to obtain a filtrate; combining the filtrates, concentrating, precipitating, centrifuging, and collecting precipitate and supernate; washing and drying the precipitate to obtain a tea polysaccharide extract; and concentrating, extracting, adsorbing, eluting, re-concentrating and drying the supernate to obtain the tea polyphenol extract. The extraction method disclosed by the invention can be used for efficiently extracting the tea polyphenol and the tea polysaccharide in the tea leaves, the product yield and purity are high, and the tea polyphenol and the tea polysaccharide can be used for preparing health-care products for relieving diabetes and polyuria.

The invention discloses a plant extraction method and system based on image processing, and relates to the technical field of image processing. The method comprises the following steps: acquiring and standardizing a plant raw material image; extracting feature vectors of the images by using a neural network convolutional layer algorithm, comparing the feature vectors with a plant raw material standard feature database, and screening out qualified images of the plant raw materials; qualified images are processed through multispectral image analysis and an image segmentation algorithm, and an effective component spatial distribution diagram is obtained; constructing a partial least squares regression linear model, extracting spectral feature vectors of the effective components, inputting the spectral feature vectors into the model to obtain concentration values, and calculating quantitative data of the effective components; establishing an extraction process rule base, selecting a process parameter combination according to a spatial distribution diagram and quantitative data, and extracting to obtain a primary extracting solution and plant residues; and calculating an effective component residual error rate by matching and mapping to a qualified image coordinate, and if the effective component residual error rate is greater than a preset threshold, performing secondary extraction to obtain a secondary extracting solution. And quantitative basis is provided for extracting process parameters through the spatial distribution diagram of the effective components.

The invention provides a method for preparing high-purity hafnium tetrachloride by wet extraction and separation, which comprises the following steps: stirring and leaching hafnium alloy waste serving as a raw material by using HNO3 and HF mixed acid, then adding thioacetamide, adjusting the pH value to 4-5, stirring and filtering; compounding tributyl phosphate, trioctylphosphine oxide and sulfonated kerosene to obtain a composite extracting agent, and stirring and mixing to form a homogeneous organic phase; in a hydrochloric acid medium, controlling the volume ratio of an organic phase to a water phase to be (2.5-3.5): 1, carrying out three-stage counter-current extraction, and standing for phase splitting; the extracted organic phase passes through an adsorption column filled with iminodiacetic acid modified silica gel; and carrying out reverse extraction by using a hydrochloric acid solution, and then carrying out reduced pressure evaporation concentration, cooling crystallization and dehydration to obtain hafnium tetrachloride. According to the method, the zirconium and hafnium separation efficiency in the hafnium tetrachloride preparation process is improved, and the problem that the content of zirconium and hafnium impurities in the product is too high is solved.

The invention relates to the technical field of coal production, and provides a heavy medium cyclone separation ash reduction and leaching chlorine reduction joint production device and a production process, the heavy medium cyclone separation ash reduction and leaching chlorine reduction joint production device comprises a rack, and a heavy medium cyclone and a leaching chlorine reduction device which are sequentially arranged on the rack, the dense medium cyclone is used for separating coal, the leaching chlorine reduction equipment is used for receiving the coal, a liquid leaching agent is contained in the leaching pool, the conveying part is arranged in the leaching pool in a circulating conveying mode, the stirring parts are rotationally arranged relative to the conveying part and move along with the conveying part, and the multiple stirring parts are distributed in the circumferential direction of the conveying part. The stirring part is used for stirring the coal on the conveying part when moving to the position above the conveying part along with the conveying part, and is used for disturbing the liquid flow of the leaching agent when moving to the position below the conveying part. By means of the technical scheme, the problems that in the prior art, coal moves in a stacking state during coal leaching and dechlorination, the coal makes insufficient contact with a leaching agent, and the leaching efficiency is low are solved.

The invention provides a percolation device and a preparation method of a phyllanthus emblica extract. The percolation device comprises a percolation tank, a pressing device and a plurality of separation structures, the preparation method of the emblic leafflower fruit extract comprises the following steps: firstly, coarsely crushing and soaking an emblic leafflower fruit medicinal material, then percolating the emblic leafflower fruit medicinal material in a percolating device, and collecting percolate; the preparation method comprises the following steps: extracting a percolate, adsorbing the percolate through macroporous resin, eluting with water and ethanol in sequence, combining an obtained lower column liquid and a water washing liquid, separating through a ceramic membrane and an ultrafiltration membrane in sequence to obtain a micromolecular functional sugar part, decolorizing with activated carbon, eluting with an ethanol solution, concentrating and drying to obtain a polyphenol part, and proportioning to obtain a target product. According to the technical scheme provided by the invention, active micromolecular functional sugar and polyphenol components in the phyllanthus emblica can be extracted and enriched at one time. The extract is light in color and good in solubility, so that the problems of single extracted component and inconvenience in application due to poor color and solubility in the traditional process are effectively solved.

The invention relates to the technical field of hydrometallurgy production systems, in particular to a solvent regeneration control system for separating zirconium and hafnium through MIBK method centrifugal extraction, which comprises a control module used on a solvent regeneration neutralization reactor, and the control module comprises a heat exchange module; the heat exchange module comprises a heat exchange unit; the heat exchange unit comprises a cooling liquid flow adjusting unit, a cooling liquid temperature detecting unit and a cooling liquid pressure detecting unit. And the heat exchange module is used for controlling the flow of the cooling liquid, the pressure of the cooling liquid and the temperature of the cooling liquid of the heat exchange unit so as to adjust the temperature of the mixed phase in the neutralization reactor. The control system can monitor the flow, temperature and pressure of cooling liquid in real time, accurately control opening, closing and temperature adjustment of the heat exchange unit, quickly respond to temperature change of a mixed phase in the neutralization reactor, remove reaction heat in time, effectively avoid the problem of extraction system emulsification caused by high-temperature decomposition and polymerization of thiocyanic acid in the solvent regeneration process, and improve the extraction efficiency. The solvent regeneration efficiency and quality are ensured.

The invention discloses a method for extracting ginsenoside based on a supercritical extraction method, and relates to the technical field of traditional Chinese medicine extraction. The ginsenoside is extracted through a supercritical extraction method, the extraction process is convenient and efficient, the purity of the ginsenoside is high, organic solvent residues are avoided, the method is green and environmentally friendly, carbon dioxide can be recycled, and the operation cost is low; through degreasing pretreatment, fat-soluble components in ginseng powder are removed, the extraction purity of saponin is increased, the solid loading capacity of supercritical extraction is reduced, the mass transfer resistance is reduced, and the extraction efficiency is improved; the ginsenoside is purified in a post-treatment mode of resin adsorption and elution, polar impurities can be further removed, glutamine is adopted for surface functionalization of the resin, acylamino and carboxyl are introduced to the surface of the resin and can form hydrogen bonds with phenolic hydroxyl groups in the ginsenoside, functional adsorption is achieved, meanwhile, impurities are removed, and the content of the ginsenoside is increased. Reaction conditions are simple and mild, and adsorption efficiency is high.

The utility model relates to the technical field of pharmaceutical engineering, and discloses a crushing and extracting mechanism for separating traditional Chinese medicine components, which comprises a base, an immersion barrel and a crushing box are assembled at the top of the base, a discharge port is assembled between the immersion barrel and the crushing box, a feed port is arranged at the top of the crushing box, and a discharge port is arranged at the bottom of the crushing box. A screening assembly and a grinding assembly are arranged in the smashing box, a temperature control assembly is arranged on the outer side of the immersion barrel, a liquid inlet pipe is assembled on the top of the immersion barrel, a liquid outlet pipe is assembled at the bottom of the immersion barrel, the screening assembly comprises a first motor, and the first motor is assembled in the middle of the smashing box. According to the utility model, under the cooperation of the motor I, the eccentric block, the screen, the spring rod and other structures, impurities are effectively prevented from being mixed into the leaching liquor, the subsequent purification process is smoothly and efficiently carried out, the purity of the leaching liquor is powerfully guaranteed, and a foundation is built for the output of high-quality traditional Chinese medicine components.

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.

The invention discloses traditional Chinese medicinal material extraction equipment which comprises a heating tank, an evaporation tank and a purification tank, the evaporation tank and the purification tank are in a negative pressure state, the evaporation tank is arranged in the heating tank, the purification tank and the evaporation tank are fixed through a connecting seat, the evaporation tank and the purification tank are connected through a siphon, a steam conveying pipe is arranged on the evaporation tank, and the purification tank is connected with the evaporation tank through a siphon. A condensing pipe is arranged at the top of the purification tank, the bottom end of the condensing pipe extends into the purification tank, the end part of the steam conveying pipe is communicated with the condensing pipe, a plurality of ultrasonic generators are arranged on the inner wall of the purification tank, a filter cartridge for storing traditional Chinese medicinal materials is arranged in the purification tank, and a discharging pipe is arranged at the bottom of the heating tank; the traditional Chinese medicinal material extraction equipment can circularly extract traditional Chinese medicinal materials, so that the extract is concentrated, the extraction process is isolated from the outside, the pollution of the external environment to the extract is avoided, the overall structure is safe and efficient, and the equipment is suitable for popularization and use.

The utility model discloses a lucid ganoderma extract preparation device, which comprises a crushing device, a second crushing device and a third crushing device, the crushing device comprises a first crushing tank, a first driving motor is arranged at the upper end of the first crushing tank, a first rotating shaft is arranged at the lower end of the first driving motor, and a first crushing blade is arranged at the lower end of the first rotating shaft; the dissolving device comprises a first dissolving tank, a second driving motor is arranged at the upper end of the first dissolving tank, a second rotating shaft is arranged at the lower end of the second driving motor, and a first stirring paddle is arranged at the lower end of the second rotating shaft; the evaporation device comprises a first evaporation tank, and a heating evaporation mechanism is arranged in the first evaporation tank. The lucid ganoderma extract preparation device provided by the utility model is simple in structure and high in temperature, lucid ganoderma is firstly crushed, then dissolved and finally evaporated and extracted through treatment of the crushing device, the dissolving device and the evaporating device in sequence, the lucid ganoderma extract is prepared, the production speed is higher, and the preparation efficiency is better.

Various aspects of this disclosure relate to methods to lower the activation energy of the cannabinoid decarboxylation reaction by performing the decarboxylation reaction in the gas phase. In some specific embodiments, the method relates to the decarboxylation of a cannabinoid performed in a short-path distillation apparatus or a thin-film distillation apparatus.

The utility model discloses an integrated device for preparing flocculant powder from fly ash, which comprises an extraction chamber, an aging reaction chamber, a rotary spray drying chamber and a product collecting chamber, a discharge port at the bottom of the extraction chamber is connected with the aging reaction chamber through a pipeline, the bottom of the aging reaction chamber is connected with a spray gun through a pipeline, the spray gun extends into the rotary spray drying chamber, and the rotary spray drying chamber is connected with the product collecting chamber through a pipeline. The product collecting chamber is located under a discharging port of the rotary spray drying chamber. An electric heating layer is arranged at the bottom of the extraction chamber; a filter is arranged at a discharge hole in the bottom of the extraction chamber. The device is an integrated continuous production device, has experiment and detection functions, is simple to operate and is suitable for industrial production.

The invention relates to a method for extracting and separating polyether polyol in waste salt slag by a water-based method, and belongs to the technical field of separation and purification. The method comprises the following steps: (1) slurrying extraction: mixing polyether polyol salt slag with water according to a certain mass ratio, and carrying out slurrying extraction under a stirring condition to obtain oil-water-salt mixed slurry; (2) performing centrifugal separation to obtain an oil-water mixture rich in polyether polyol; (3) demulsifying and layering to obtain a polyether polyol phase; and (4) refining and purifying: dehydrating the polyether polyol phase to obtain a recycled polyether polyol product. According to the method, water is used as an extraction solvent, so that the use of toxic and flammable organic solvents is completely avoided, the safety and health hidden dangers are fundamentally eliminated, and secondary organic pollution is avoided. By optimizing parameters such as the temperature and the liquid-solid ratio of extraction water and combining centrifugal separation, the polyether polyol can be efficiently extracted and separated from the thick salt slag, and the recovery rate can reach 95% or above.

This invention belongs to the field of natural product extraction technology, specifically relating to a method for extracting total polyphenolic active substances from Gastrodia elata in food and cosmetics. The method uses a eutectic solvent as the extraction solvent, combined with ultrasonic extraction. The hydrogen bond acceptors of the eutectic solvent include polyethylene glycol-200, polyethylene glycol-400, and Tween 80, while the hydrogen bond donors include ethylene glycol, 1,2-propanediol, glucose, glycerol, and xylitol. This invention, using a eutectic solvent combined with ultrasonic extraction, achieves high extraction efficiency of total polyphenolic substances from Gastrodia elata, reaching a maximum of 33.2 mg / g. The extraction method of this invention is simple, has a short extraction time, and is practical, showing great development potential in the fields of medicine, food, and cosmetics.

The application discloses an extraction device and a ganoderma spore oil extraction process, and relates to the field of extraction equipment. In the application, the pressure cavity and the gas distribution port are arranged on the stirring blade, so that the supercritical carbon dioxide fluid in the gas conveying flow channel can be sprayed from one side of the stirring blade into the extraction kettle through the pressure cavity and the gas distribution port, and the stirring blade rotates and stirs in the extraction kettle, so that the supercritical carbon dioxide fluid is more uniformly distributed into the extraction kettle through the cooperation of the rotating stirring blade and the gas distribution port, the mixing effect of the supercritical carbon dioxide fluid and the raw materials in the extraction kettle is improved, and the extraction effect is improved. Moreover, the gas distribution ports on the two stirring blades which are symmetrically distributed in the same group are reversely arranged, so that the two corresponding stirring blades can receive the thrusts in opposite directions when the supercritical carbon dioxide fluid is sprayed through the gas distribution ports, and the thrusts can assist the rotation and stirring of the stirring blades, so that the working energy consumption of the driving assembly is reduced.

The invention discloses an efficient extraction and compounding method of ergothioneine, and relates to the technical field of ergothioneine preparation, the efficient extraction and compounding method comprises the steps of raw material pretreatment, extraction, purification, compounding and embedding, raw material pretreatment adopts an enzymolysis and chelation synergistic technology, extraction adopts a pH response type aqueous two-phase system and is combined with ultrasonic microwave synergistic enhancement, and the compounding and embedding are carried out. A nanofiltration membrane separation and vacuum freeze drying combined process is adopted for purification, a targeted compounding system is adopted for compounding, and a composite wall material microcapsule embedding technology is adopted for embedding. According to the method, the cell wall structure of the raw material is destroyed and the oxidation of active ingredients is inhibited through an enzymolysis and chelation synergistic pretreatment technology, the ergothioneine distribution behavior is regulated and controlled and the mass transfer process is accelerated by matching with a pH response type aqueous two-phase system and ultrasonic microwave synergistic enhanced extraction, and then a nanofiltration membrane separation and vacuum freeze drying combined purification process is combined; impurities are effectively removed, the activity of components is reserved, and the problems of low extraction rate and insufficient purity of a traditional method are solved.

The invention relates to a method for producing solid lithium salt through extraction-liquid-liquid-solid three-phase reverse extraction from a lithium-containing solution, which comprises the following steps: (1) mixing the lithium-containing solution with a composite extraction agent, and carrying out extraction treatment to obtain a lithium-loaded first organic phase and a raffinate phase; (2) carrying out impurity removal treatment on the first organic phase to obtain a second organic phase; and (3) mixing the second organic phase with a stripping agent, carrying out stripping treatment to obtain an oil-water-solid three-phase mixed phase containing solid lithium salt, and carrying out phase separation on the mixed phase to obtain the solid lithium salt, wherein the stripping agent is an acid solution containing a lithium salt solid. According to the method, efficient separation of lithium and a large number of impurities is achieved through extraction and washing treatment, the solid lithium salt is directly obtained after reverse extraction treatment, the battery-grade solid lithium salt product can be obtained after impurity removal treatment, and the method has the advantages of being simple in preparation technology, short in process, high in product purity and low in production cost.

The invention discloses gynura formosana powder extraction equipment and an extraction process thereof, and relates to the technical field of extraction tanks, the gynura formosana powder extraction equipment comprises an extraction tank main body, an extracting solution circulating mechanism is arranged on the outer side of the extraction tank main body, a pressing mechanism is arranged in the extraction tank main body, a feeding port is formed in the top of the extraction tank main body, and a discharging port is formed in the bottom of the extraction tank main body; an access hole is formed in the side end surface of the extraction tank main body, a water bath jacket and a temperature sensor are arranged on the side wall of the extraction tank main body, the extracting solution circulating mechanism comprises an outer liquid inlet pipe, an inner liquid inlet pipe, a three-way valve, a circulating pump, a first feeding pipe, a second feeding pipe and a filter screen, and the material pressing mechanism comprises a motor, a driving shaft, a material pressing frame and a material pressing plate. The method has the advantages of efficiently promoting powder sinking, strengthening solvent permeation and improving extraction uniformity and yield, and solves the problems of floating agglomeration and non-uniform infiltration in the extraction process of gynura formosana powder.

The present invention relates to a dandelion active component extraction process optimization method based on an I-WO-SVR model. The method comprises: acquiring factors to be predicted, wherein said factors comprise the ethanol concentration, ultrasonic time, ultrasonic temperature and ultrasonic power; and inputting said factors into an I-WO-SVR model, so as to acquire the extraction rate of chlorogenic acid from dandelion flowers and stems, wherein the I-WO-SVR model is obtained by using a training set to train a support vector regression (SVR) prediction model and using an improved walrus optimizer (I-WO) to optimize a penalty parameter and a nuclear parameter of the SVR prediction model, and the training set comprises original factors and chlorogenic acid extraction rates corresponding to the original factors. The present invention combines modern artificial intelligence technology with the field of traditional Chinese medicine to design a Chinese medicinal material active component extraction optimization method, has broad application prospects, and can provide new ideas for Chinese medicine extraction and intelligent industrial production thereof.

The invention belongs to the technical field of active substance extraction, and discloses a method for extracting boxthorn leaf total flavonoids through an ultrasonic-assisted deep-eutectic solvent and application of the boxthorn leaf total flavonoids. Heating and mixing the hydrogen bond acceptor and the hydrogen bond donor, stirring to be transparent, and adding water to reduce viscosity to obtain the eutectic solvent; mixing the boxthorn leaf powder with a deep-eutectic solvent, performing ultrasonic extraction and centrifugation, and collecting supernate; adsorbing by using macroporous resin, washing and desorbing to obtain an eluent; and performing vacuum freeze drying to constant weight. According to the method disclosed by the invention, the eutectic solvent with low melting point and strong solubility is selected, the flavonoid compounds in the boxthorn leaves are green and efficiently extracted, and the total flavonoid content of the boxthorn leaves obtained by taking the eutectic solvent as an extraction solvent is 123.94 + / -1.04 mg / g and is far higher than the total flavonoid content of the boxthorn leaves obtained by traditional ethanol extraction by 64.60 + / -0.87 mg / g; the method is good in safety, short in time consumption and high in extraction rate.

The invention discloses a method and equipment for preparing antioxidant selenized carrageenan. The equipment comprises a fixed seat, a rack, a base and a kettle body mounted on the base, a heating layer is arranged in the kettle body, a main shaft is arranged at the bottom in the kettle body, and a motor in transmission connection with the kettle body is arranged at the bottom end of the kettle body; a stirring mechanism is arranged on the main shaft; the fixed seat is assembled on the rack and located above the kettle body, a first telescopic cylinder is arranged on the fixed seat, a piston rod of the first telescopic cylinder penetrates and extends to the position below the fixed seat, the tail end of the first telescopic cylinder is rotationally connected with a fixed frame, a movable plate is arranged at the bottom end of the fixed frame, and a plurality of material barrels are arranged on the movable plate in the circumferential direction of the movable plate and used for containing algae materials; a plurality of through holes are distributed in the surface of the material barrel; the problems that stirring of traditional equipment has dead angles, algal materials are not in uniform contact with hot water, carrageenan dissolution is not thorough, and additional filtration is needed for algal residue separation are solved, efficient carrageenan extraction is achieved, and the preparation quality and efficiency of selenized carrageenan are improved.

The invention relates to the technical field of coffee cold extraction and concentration equipment, in particular to continuous coffee cold extraction and concentration equipment based on intelligent monitoring. The system comprises an intelligent preprocessing unit, an intelligent cold extraction control unit, a quality monitoring and intercepting unit and a concentration presetting unit, the intelligent preprocessing unit collects coffee bean parameters and moisture content data through the radio frequency identification technology, and the intelligent cold extraction control unit accurately controls cavity switching through a servo motor; the optimal extraction environment is automatically matched for coffee powder with different characteristics, parameters such as temperature, pressure and concentration in the processing process are analyzed in real time based on a machine learning algorithm, and extraction process parameters are dynamically adjusted. And the quality monitoring and intercepting unit performs multi-dimensional quality evaluation on the extraction liquid to ensure the stable quality of the final product. According to the invention, a whole-process intelligent control system from raw material processing to finished product output is constructed, and the quality consistency and the production efficiency of the coffee cold extraction concentrated product are remarkably improved.

The invention discloses a preparation method of a tea leaf extract rich in tea aroma components, tea polyphenols and caffeine. The method comprises the following steps: firstly, extracting and separating aroma components in tea leaves by using a supercritical CO2 extraction technology, extracting residual residues by using ethanol, separating and enriching by using a normal-phase / reversed-phase column chromatography technology, simultaneously obtaining tea polyphenol and caffeine, and removing other ineffective components, thereby obtaining the tea leaf extract with relatively strong antioxidant, whitening and soothing effects; the color is appropriate, the fragrance is stronger, the stability is better, the activity is better, and the application range is wider; moreover, the whole extraction operation process is simple, and large-scale production is easy, so that the method can be widely applied to products such as cosmetics, shampoo, shower gel, facial cleanser, food and beverage, health care products and the like.

The invention relates to the technical field of polyphenol extraction, and provides a green pear polyphenol extraction method which comprises the following steps: performing steam explosion treatment on pear residue dry powder, and then infiltrating and activating by using an aqueous solution containing L-malic acid; adding betaine and D-gluconic acid into the first part of ultrapure water to prepare a deep eutectic solvent; mixing the eutectic solvent with a second part of ultrapure water to prepare a composite extracting agent; putting the infiltrated and activated raw materials and a composite extracting agent into an extraction device to obtain an extracting solution; carrying out solid-liquid separation on the extracting solution to obtain a clear solution; and adsorbing the clarified liquid through macroporous adsorption resin, then eluting with an ethanol water solution, collecting polyphenol-rich eluent, and carrying out spray drying to obtain the pear polyphenol extract. According to the technical scheme, the quality of an extracted product is improved, and polyphenol oxidation and thermal degradation are reduced; meanwhile, the product storage stability is improved, the phenomena of wall sticking and caking of powder are reduced, and the product yield and physical properties are guaranteed.

The invention relates to the technical field of deodorants, and discloses a preparation method and application of an onion extract high-efficiency low-temperature concentrated deodorant, and the preparation method comprises the following steps: S1, dicing onions, soaking in a color protection solution, and draining for later use; s2, putting the diced onions into a supercritical extraction kettle, and extracting by taking ethanol as an entrainer; s3, a mixed system in the extraction kettle is sequentially guided into a first-stage separation kettle and a second-stage separation kettle through a throttling valve; s4, filtering the onion extract crude product through a bifunctional biomimetic membrane, and performing nanofiltration through a nanofiltration system; s5, concentrating the nanofiltration membrane trapped fluid in vacuum low-temperature concentration equipment to obtain an onion extract concentrated solution; s6, preparing microcapsule powder from the onion extract concentrated solution, a solvent, an emulsifier, deionized water and modified beta-cyclodextrin; mixing the microcapsule powder with menthol to prepare a solid deodorant; or compounding with ethanol to prepare liquid spray.

The invention discloses an extracting agent for decolorizing a waste PET (Polyethylene Terephthalate) raw material and a decolorizing process, and belongs to the technical field of recycling of waste PET. The extraction agent comprises a main extraction agent and an auxiliary extraction agent, the main extraction agent is oleic acid, and the auxiliary extraction agent is determined according to the dye type in the waste PET raw material; the decolorizing process comprises the following steps: crushing a waste PET raw material into PET particles, mixing the PET particles with an extracting agent, carrying out preliminary decolorizing, and then filtering, washing and drying to obtain preliminarily decolorized PET particles; mixing the preliminarily decolored PET particles with water, adjusting the pH value to 4-5 by using dilute acid, then adding a hydrogen peroxide solution and a Fe-based composite catalyst, carrying out a stirring reaction at 50-80 DEG C for 0.5-2 h to carry out deep oxidation decoloring, and then carrying out filtering, washing and drying so as to obtain the deeply oxidized and decolored particles. According to the method, preliminary decoloration and oxidation decoloration are carried out before PET alcoholysis, so that dye, printing ink and the like in the PET raw material are removed as far as possible, and the BHET finished product obtained through alcoholysis can meet the requirements of high purity and high color value.

The invention relates to the technical field of oil-containing waste treatment and resource utilization, in particular to a water-based oil sludge stripping-split-phase recycling integrated treatment method. According to the method, polyepoxysuccinic acid grafted quaternary ammonium salt chitosan is adopted as a stripping agent, and oil stains are stripped from a solid phase through ultrasonic treatment to form emulsion; the core of the method is that a temperature-sensitive response type flocculating agent, namely polyisopropylacrylamide grafted chitosan, is added during gradient heating, and the auxiliary agent is converted from hydrophilic to hydrophobic after being heated, so that efficient demulsification is realized, and oil-water-solid three-phase separation is promoted. Through the synergistic effect of the two assistants, the technical problem that the emulsion is stable and difficult to separate after stripping is solved, closed cycle of the treated water phase is realized, and high efficiency, environmental protection and economic benefits are achieved.