79results about How to "Short split time" patented technology

The invention discloses a method for non-saponification extraction and separation of light rare earth elements. After a compound extraction agent consisting of acid phosphorus type extraction agent, alkaline amine type extraction agent and solvent oil is mixed with phosphate solvent or organic alcohol solvent at 30-70 DEG C, chlorinated light rare earth liquid is extracted and separated; and the water washing and the hydrochloric acid reverse extraction are performed to finally realize the separation of La, Ce, Pr and Nd; and a mixed organic phase after the reverse extraction is returned to an extraction tank for recycling. The method pretreats the mixed organic phase consisting of the compound extraction agent and the solvent, so that such defects as high viscosity, weak mobility, easy emulsification and long phase splitting time are overcome; the method has no need to saponify the acid phosphorus type extraction agent, so that no alkali liquor consumption and no waste water emission in the extraction process are realized, but the separation capacity of a saponification extracting agent system is achieved, and the extraction grade is reduced compared with that needed by the saponification extracting agent system; and the method is a rare earth element separation process with economy and high efficiency.

This invention relates to a method for preparing Momordica grosvenori extracts at a low temperature, especially a method for preparing food raw material extract rich in vitamin C and sweetener extract rich in mogroside by combination of multi-stage fine filtration and polyol extraction at 40 deg.C or below. The method has such advantages as high resource utility, short production cycle, and retained Momordica grosvenori taste in the extracts.

The invention relates to a chlorophenol compound measuring method, specifically to a method for determining a trace chlorophenol endocrine disruptor in water. The method comprises the following steps of: adding NaH2PO4 phase separation salt, adding a Na2HPO4-H3PO4 buffer solution to adjust pH value of the solution, adding a [Bmim]BF4 hydrophilic ionic liquid for extraction separation, separating by a centrifuge, taking an ionic liquid phase, and finally determining the content of the chlorophenol endocrine disruptor through HPLC. According to the invention, the ionic liquid is used as an extractant, NaH2PO4 is used as the phase separation salt, and the trace chlorophenol endocrine disruptor in water is determined by the utilization of the ionic liquid aqueous biphasic extraction-high performance liquid chromatography (HPLC) method, which has advantages of short phase separation time, no easy emulsification during the extraction process, nontoxicity, no pollution and the like in comparison with polymer aqueous biphasic extraction. The method provided by the invention has high accuracy and good precision.

The invention discloses a method for extracting total flavonoids in grape seeds in a double-aqueous phase system, belonging to the field of separation and extraction methods of natural product active ingredients. The method comprises the following steps of: firstly preparing grape seed rough extract from grape seeds with ethanol; then adding absolute ethyl alcohol, ammonia sulfate, inorganic salt and water in the grape seed rough extract to form the double-aqueous phase system, mixing uniformly, standing for 5-30 minutes at room temperature for delamination to obtain an upper phase and a lower phase, concentrating the upper phase through pressure reduction and drying so as to obtain total flavonoids of grape seed. In the double-aqueous phase system, the mass percents of grape seed rough extract, absolute ethyl alcohol, ammonia sulfate and inorganic salt are respectively 5% to 30%, 10% to 30%, 16% to 30%, and 0 to 5%, the balance is supplemented to be 100% with water, and the pH of the double-aqueous phase system is 3.0 to 11.0. Flavonoids are extracted by utilizing double aqueous phases in the method; the method is simple, the operation is convenient, the production cost is low and the treating capacity is large, small test data can be directly amplified, and the yield of flavonoids in the grape seeds reaches up to 98.2%; and the method can be operated continuously, and is suitable for industrialized production of flavonoids in the grape seeds.

The invention discloses a making method of industry-grade phosphate based on wet process phosphoric acid as raw material, which comprises the following steps: desulfurizing; defluorinating; stripping arsenic; removing heavy metal; decoloring; extracting predisposed wet process phosphoric acid through compound organic solvent of ketone and phosphate ester; washing; reextracting; condensing; post-processing to obtain the product; adopting alkali solution of potassium carbonate, sodium carbonate or alkaline-earth metal as extractor.

The invention relates to a CO2 enriched type two-phase absorbent with rapid and spontaneous layering. The CO2 enriched type two-phase absorbent comprises the following components in percentage by mass: 30-60% of a phase splitting agent, 15-35% of an enriching agent, 0-25% of an accelerant and the balance of water, wherein the enriching agent is selected from one or more of cholamine, hydroxyethylethylenediamine, 3-amino-1-propanol, N-methyl-2-hydroxy ethylamine, ethyl oxyethylamine and isopropanolamine. By adopting the two-phase absorbent, the spontaneous phase splitting time of the two-phaseabsorbent is effectively shortened, and the phase splitting load range that the two-phase absorbent spontaneously forms liquid-liquid phases is increased.

The invention provides a method for separating and purifying functional protein in plasma, which comprises the following steps of: adding soluble inorganic salt and a hydrophilic organic solvent into a plasma solution to form a two-aqueous phase extraction system, and obtaining the upper-phase extraction liquid rich in plasma functional protein; and performing further separation and purification of the extraction liquid through hydrophobic chromatography and ion exchange chromatography to obtain the plasma functional protein of which the electrophoresis purity is higher than 95%. The method provided by the invention simplifies the purifying steps of the plasma functional protein; the organic solvent / salt two-aqueous phase extraction has the advantages of convenience in solvent recovery, low cost and short phase separating time, does not need back-extraction operation and can selectively remove glucose and partial protein in the plasma; and the extraction liquid is directly separated and purified by hydrophobic chromatography and ion exchange chromatography, the complicated steps of desalination are avoided, and the separation and purification effects of the plasma functional protein are remarkably improved. The method provided by the invention solves the problems of complicated separation steps, high cost, low purity and the like in the separation and purification of functional protein in the plasma protein.

The invention relates to extracting agent for recycling acetic acid from diluted acetic acid, and solves the problem that the extracting efficiency of the prior art is low. The invention has the technical proposal that the extracting agent includes the components by weight percentage: at least one kind of tertiary amine of 5 to 70 percent with 6 to 20 carbon atoms, alphanol of 10 to 80 percent and kerosene of 5 to 60 percent. Besides, the extracting agent is applicable for the industrial production including recycling of acetic acid from wasted aldehyde water and extracting and refining acetic acid in the methyl acetate hydrolysis technique.

The invention belongs to the technical field of extraction and separation of flavone and polysaccharide active ingredients in plants, and particularly relates to an extraction liquid for synchronously extracting flavone and polysaccharide of taxus chinensis and a method thereof. The method comprises the following steps of using crushed branches and leaves of taxus chinensis as raw material; under the synergetic action of ultrasonic wave and microwave, extracting and separating flavone and polysaccharide by a novel double-water phase system which is built by ionic liquid, inorganic salt and water; extracting and separating a flavone compound from an upper ionic liquid phase by an organic solvent, and recycling the ionic liquid and the organic solvent; obtaining a polysaccharide compound from a lower inorganic salt water phase by dialysis, and alcohol precipitation. The method has the advantages that the extraction efficiency is high, the separation condition is moderate, the green and environment-friendly effects of extracting solvent are realized, the recycling degree is high, and the like; the method is suitable for industrialized synchronous separation of flavone and polysaccharide compounds.

The invention discloses an analysis method for simultaneous determination of 6 kinds of trace phenol environmental endocrine disrupting chemicals (EDCs) in a solid environmental sample. The method comprises the steps: carrying out microwave-assisted extraction and gel permeation chromatography purification and the like, after solid-phase extraction, concentrating with a rotary evaporimeter, then blowing to dry with moderate nitrogen, adding BSTFA and pyridine, carrying out trimethyl silylation treatment on hydroxyls of the phenol EDCs, and finally analyzing by using GC-MS. Through sample concentration, purification, derivatization and other processes, a chromatographic peak pattern is improved, the detection limit and the impurity interference are reduced, the purification effect is improved, and the instrument analysis accuracy and sensitivity are increased. The method simplifies the operations, has the advantages of high efficiency, energy saving, short phase separation time, not easy emulsification in the extraction process, no pollution, simple operations and the like, and can well suitable for analysis determination of 6 kinds of typical trace phenol EDCs in the solid environmental sample.

The invention provides a femoral head CT image segmentation method, and relates to the technical field of medical image processing. The method comprises: performing pre-segmentation by using a three-dimensional maximum between-cluster variance method; then, based on the combination of image segmentation and shape constraint, performing automatic femoral head accurate segmentation; after graph construction, optimizing a segmentation result on the basis of a Graph cuts model; detecting a circular area in the image based on layered Hough transform; and carrying out re-prediction and classification on a Graph cuts segmentation result by using an SVM, extracting neighborhood gradient features, separating the femoral head from the acetabulum, and generating the femoral head by using a regional growth algorithm by taking the detected circle center as a seed node to obtain a final femoral head segmentation image. According to the invention, image noise can be effectively eliminated, hard constraint conditions are provided for the Graph cuts model, robustness is good, full-automatic segmentation of the femoral head CT image is achieved, the convergence time of the Graph cuts model can be greatly shortened, the edges of the segmented femoral head are complete, details are clear, and the segmentation accuracy reaches 92%.

The invention discloses a branched-chain long-chain fatty acid base imidazoline extraction agent and a preparing method and application thereof. The imidazoline extraction agent comprises multiple N atoms and long-branch-chain alkyl groups. The preparing method of the imidazoline extraction agent comprises the steps that in the normal pressure, carboxylic acid and polyethylene polyamine are subjected to the reaction under the action of a solid catalyst, after the reaction is finished, the solid catalyst is recycled through solid-liquid separation, the liquid mixture is distilled, the raw material incompletely reacted is recycled, and then the branched-chain long-chain fatty acid base imidazoline extraction agent is obtained. The preparing method has the beneficial effects that reaction conditions are moderate, the catalyst can be repeatedly used, and equipment investment and operation cost are low; the imidazoline extraction agent is used for extraction negative ions including tungsten, molybdenum and vanadium, the beneficial effects that the extraction volume is high, the phase splitting time is short, and the extraction and reverse extraction performance is excellent; and good industrial application prospects are achieved.

The invention discloses an extraction and purification method of pumpkin polysaccharide. The method includes the steps of conducting cleaning, peeling and pulp discarding on pumpkin, smashing the pumpkin through a smashing machine, conducting even stirring and low-temperature freezing, then extracting pumpkin polysaccharide with the aid of ultrasonic waves to obtain a pumpkin polysaccharide extraction solution, adding polyethylene glycol and ammonium sulfate to the pumpkin polysaccharide extraction solution for extraction, conducting sufficient and even stirring, standing till phase separation is completed, conducting centrifugal separation to form two phases of the solution, adding absolute ethyl alcohol to the upper phase, and conducting sedimentation to obtain pumpkin polysaccharide. The method has the advantages of saving time, being efficient, saving energy and the like when ultrasonic waves are used for extracting pumpkin polysaccharide. The inactivation or degeneration of bioactive substances can not be caused when extraction is conducted in a water solution. The yield of pumpkin polysaccharide in the method can reach 60.58-62.82%. The phase separation time is short, and the natural phase separation time is usually 5-15 min. No organic matter residual problem exists, and engineering amplification and continuous operation are easy.

The invention discloses a method for extracting papain by using a double aqueous phase system, belongs to the technical field of bioseparation, and particularly relates to an ionic liquid assisted polyethylene glycol / sodium dihydrogen phosphate system. The method comprises the following specific steps: taking imidazolium ionic liquid as an auxiliary material, and adding the imidazolium ionic liquid into a polyethylene glycol 400 / sodium dihydrogen phosphate double aqueous phase system prepared according to a certain mass fraction; then adding a papain solution with a certain concentration; after preparation is finished, putting the prepared solution on a vortex oscillator, oscillating for 5 minutes and uniformly mixing; subsequently, putting the mixed solution into a thermostat water bath with the temperature of 25 DEG C and allowing standing still for 24 hours; after the phase splitting operation is finished, respectively taking an upper phase and a lower phase, diluting the solution to a certain concentration with distilled water, and measuring the concentration of the papain in each phase. The method disclosed by the invention has the characteristics that the extraction rate of the papain by a polymer / salt double aqueous phase system can be remarkably improved; besides, the viscosity of the double aqueous phase system can be reduced; the method is low in energy consumption, simple in operation and the like.

The invention discloses a three-dimensional point cloud semantic segmentation method based on a segmentation network and an adversarial network. The method comprises the following steps: (1) constructing the segmentation network; (2) constructing a gradient estimation module; (3) constructing an adversarial network; (4) constructing a three-dimensional point cloud semantic segmentation network based on a segmentation network and an adversarial network; (5) initializing a segmentation network and an adversarial network; (6) generating a training data set and a training label set; (7) training asegmentation network and an adversarial network; and (8) segmenting the three-dimensional point cloud data. High-dimensional features are extracted through the adversarial network, point cloud segmentation is conducted through the segmentation network, and the method has the advantages of being short in point cloud segmentation time in the test stage and high in segmentation result precision.

The invention discloses a protein separation and purification device. A feed pot is communicated with an aqueous two-phase system through a first drainage pipe; a distillation device is communicated with an anion exchange resin device through a second drainage pipe. Compared with the traditional technology, the protein separation and purification device provided by the invention is provided with the feed pot, the aqueous two-phase system comprising polymer / salt, and the anion exchange resin device so as to separately perform the protein separation and purification steps, realizes pollution-free step-by-step and segmented treatment from primary separation and purification of the aqueous two-phase system comprising polymer / salt to secondary separation and purification of the anion exchange resin device through feeding of the feed pot, achieves ideal effect, realizes the separation of the protein through adjusting temperature, pH and the like at an early stage, realizes the continuous and automated production of protein separation and purification, and has high separation and purification efficiency.

The invention discloses a process for the extraction separation of bamboo leaf flavonoids by two aqueous phases. For overcoming the drawbacks of complex operation, time consumption, low extraction rate and low quality of extracted bamboo leaf flavonoids and the like of the conventional method for extracting bamboo leaf flavonoids from bamboo leaves, the processes comprises: adding ethanol into bamboo leaf powder, filtering, concentrating filtrate, recovering ethanol, and obtaining concentrated solution; centrifuging the concentrated solution and collecting supernate; adding polyethylene glycol and glucan into the supernate, uniformly mixing, centrifuging and collecting a glucan phase; and separating glucan by a conventional method and obtaining bamboo leaf flavonoids. The method is used for extracting bamboo leaf flavonoids from the bamboo leaves can amplify a project and realize continuous operation and is simple, high in extraction rate, large in handling capacity, low in energy consumption and production cost, free from arousing inactivation or denaturation of bamboo leaf flavonoids, short in phase separation time, small in interface tension and free from organic solvent residue.

The invention relates to a method for preparing saponifier by directly recycling saponification wastewater produced by the extraction and separation of rare earth, which belongs to the field of rare earth hydrometallurgy. In the invention, the saponification wastewater produced by the extraction and separation of the rare earth is directly recycled to prepare the saponifier; the saponification wastewater is recycled according to different ammonium chloride or sodium chloride contents of the wastewater and the characteristics of contained trace rare earth elements as well as the requirements for extraction and separation purity of the rare earth; the saponification wastewater is recycled, which reduces the discharge of wastewater, reduces the using amount of pure water, improves the ammonium chloride or sodium chloride contents of the wastewater, reduces the energy consumption on concentrating, crystallizing and recycling ammonium chloride or sodium chloride, improves the rare earth yield, and lowers the organic consumption.

A method for extracting vanadium from high-acid leachate of vanadium slag is performed according to the following steps that firstly, an oxidizing agent is added into the vanadium-containing high-acidleachate to be stirred, and the electric potential of materials is 1000-1500 m; secondly, mixing with an extracting organic solution is performed, extraction from the first level to the fourth levelis performed, and a loaded organic phase and extraction raffinate are obtained; thirdly, the loaded organic phase is subjected to reverse extraction through a sodium carbonate solution; fourthly, after sulfuric acid is added in a reverse extraction solution, ammonium chloride is added in, and a precipitated solid phase is calcined so that vanadium pentoxide can be obtained; and fifthly, NaCl is added in the extraction raffinate, acid adjusting is performed, and iron extracting is performed with a TBP kerosene extraction agent. The method can solve the problem that during vanadium extraction ofa traditional acidic phosphorous type extraction agent, acid and alkali consumption is large, and the procedure is long; and the purpose of efficient synergistic extraction of vanadium in the high-acid leachate is also achieved, and in the direct vanadium precipitating and calcining process of subsequent alkaline reverse extraction, high-purity vanadium pentoxide is obtained.

The invention discloses a micro-extraction component which comprises a lipophilic upper disk and a lipophilic lower disk. A micro-fluid channel is arranged at the center of the upper disk, the bottom of the upper disk is a plane, a feeding groove is formed in the center of the lower disk, and micro-grooves are distributed from the feeding groove to the top edge of the lower disk. A super-gravity field micro-extraction device comprises the micro-extraction component, a feeding mixer, a connector, a receiving trough, a protective cover, a shaft sleeve, a speed reducer, a motor and a supporting system. The super-gravity field micro-extraction device is used for the following extraction operation: (1) starting the motor and driving the lower disk to rotate by power of the speed reducer; (2) feeding an organic phase and a water phase into the feeding mixer through two feeding ports of the feeding mixer, throwing the water phase and the organic phase after flowing mass transfer into the receiving trough under the action of centrifugal force, and discharging the water phase and the organic phase from a discharging port formed in the receiving trough; (3) collecting discharges at the discharging port of the receiving trough, and performing standing phase separation on the discharges.

The invention provides a low-delay video segmentation real-time preview method. The method comprises the following steps: processing a key frame of a video stream by adopting a network structure basedon deep learning to obtain a second image segmentation result; Processing the transition frame between the key frames of the video stream by adopting a gray scale projection algorithm to obtain a second image segmentation result of the transition frame; And displaying the first image segmentation result in real time by adopting a low-delay display strategy. According to the invention, the key frame of the video stream is processed by the deep learning network structure, and image segmentation can be accurately carried out; The gray scale projection algorithm is adopted to process the transition frame between the key frames of the video stream, and the similarity between the video frames can be utilized to rapidly propagate the segmentation result of the previous frame, so that the segmentation time of each frame is short, and the smoothness of the video is ensured; And a low delay strategy combining an accurate result obtained by processing the key frame through the deep learning network structure with the video sequence enables the video to be free of a stuck feeling and a lag feeling.

The invention provides a high-resolution remote sensing image-oriented segmentation method. The method comprises the following steps of: inputting an original high-resolution remote sensing image; extracting a plurality of features of the image and forming a comprehensive feature vector; processing the comprehensive feature vector by utilizing a support vector data description method; and forming an image segmentation result. The method provided by the invention is mainly used for solving the problems of long time and low precision caused by multiple features and high resolution in the existing remote sensing image segmentation technology.

The invention provides a method for extracting ursolic acid from Cynomorium songaricum by using a eutectic solvent / salt aqueous two-phase system. The method comprises the following steps: with the eutectic solvent / salt aqueous two-phase system as an extraction solvent, subjecting the powder of Cynomorium songaricum to ultrasonic extraction at first so as to obtain a eutectic solvent phase containing ursolic acid, then carrying out pre-extraction by using a reversed micelle solution, and carrying out standing for layering, wherein an upper phase is a reversed micelle phase containing ursolic acid; and adding absolute ethyl alcohol into the reversed micelle phase containing ursolic acid for extraction, then carrying out standing and layering, wherein a lower phase is an absolute ethyl alcohol phase containing ursolic acid, and subjecting the absolute ethyl alcohol phase containing ursolic acid to pressure-reduced concentration and vacuum drying so as to obtain ursolic acid powder. According to the invention, the eutectic solvent / salt aqueous two-phase system is employed for extraction of the powder of Cynomorium songaricum, and reversed micelle extraction is employed for separation of ursolic acid in the eutectic solvent, so the method has the characteristics of short phase-splitting time, low viscosity, small possibility of emulsification and the like; the eutectic solvent and the reversed micelle solvent can be cyclically utilized; and the method is low in extraction cost, high in the purity and yield of a ursolic acid product and is a green, highly-efficient and simple separation method.

The invention discloses an aqueous two-phase system and application of same to separation of vitamin B6 in sunflower seeds of same. The aqueous two-phase system is prepared from, by mass, 30-40% of N-ethyl pyridine nitrate ion liquid, 20-30% of ammonium citrate and the balance water, wherein the sum of the mass ratio of the N-ethyl pyridine nitrate ion liquid, the ammonium citrate and the water is 100%. The aqueous two-phase system has the advantages of being wide in linearity range, low in checkout limit, small in relative deviation and high in detection recovery rate of samples; the checkout requirement for residual vitamin B6 of the nation can be met, meanwhile, operation is simple, and the aqueous two-phase system is applicable to quantitative analysis of vitamin B6 in sunflower seeds.

The invention belongs to the technical field of biochemical separation, and more specifically relates to a method for extracting syringic acid and recovering ionic liquid by using an ionic liquid two-aqueous phase system. The method comprises the following step: a syringic acid solution is prepared, the ionic liquid, sodium carbonate, water, and the syringic acid solution are added to obtain a mixed solution, the mixed solution is shaken, and placed in a constant-temperature water bath for a standing reaction to complete the system phase separation, the ionic liquid-rich phase and the sodium carbonate-rich phase solution are respectively weighed and the syringic acid concentration is measured, the extraction rate is calculated, the ionic liquid-rich phase is directly taken out, and the ionic liquid is recovered by vacuum drying. The method has higher extraction efficiency, shorter phase-separation time, simple experimental condition, easy operation of a whole process, and easy enlargement, and is in favor of industrialization.

The invention provides a lengthened scraping film type rotary channel enhanced-extraction device and application thereof. The lengthened scraping film type rotary channel enhanced-extraction device comprises a supporting frame, an internal cylinder and an external cylinder sleeving the outside of the internal cylinder. The top of the supporting frame is provided with a rotary part, the bottom of the rotary part is connected with the external cylinder, the external cylinder and the internal cylinder can rotate in the range of 0-90 degrees along a vertical line under the effect of the rotary part. The gap between the external cylinder and the internal cylinder is 0.15-0.35 mm. the top of the internal cylinder is connected with a rotary shaft, the rotary shaft is arranged at the bottom of therotary part and is connected with a motor, and the rotary shaft, the internal cylinder and the external cylinder have the same central line. The outer wall of the internal cylinder is marked with a plurality of strips. The external cylinder is provided with an upper feeding port, a lower feeding port and a discharging port. The lengthened scraping film type rotary channel enhanced-extraction device is applied to a liquid-liquid extraction enhancing method, and the time for shortening extraction to achieve balance can be remarkably shortened.

The invention provides film scratching type rotary micro-channel enhanced extraction equipment and application thereof. The extraction equipment comprises an inner barrel and an outer barrel which sleeves the outer part of the inner barrel, wherein a gap between the inner barrel and the outer barrel is 0.15 to 0.35mm; a plurality of vertical strips are engraved on an inner wall of the inner barrel; the top of the inner barrel is connected with a rotary shaft; the rotary shaft is connected with a motor; and the outer barrel is provided with an upper feeding opening, a lower feeding opening anda discharging opening. The equipment is applied to an enhancement method of solvent extraction; the enhancement method comprises the following steps: conveying a solution to be extracted and an extracting agent into the gap between the inner barrel and the outer barrel through the upper feeding opening and the lower feeding opening respectively under the pushing of an injection pump at the same time; and after the gap between the inner barrel and the outer barrel is fully filled with liquid, a motor is started and the inner barrel is rotated, so that a two-phase flow is formed in the gap and the two-phase flow is discharged from the discharging opening through movement. By adopting the film scratching type rotary micro-channel enhanced extraction equipment, the time that extraction is balanced can be greatly shortened and the extraction energy consumption is reduced.