68results about How to "Improve separation and purification effect" patented technology

A device for preparing high-purity organic substance by fusion crystallizing method is a tower structure which is divided into upper cooling-crystallizing segment, middle separating-purifying segment and lower crystal fusing segment. Its tower body is inclined and is composed of casing consisting of intersected two cylinders, heater and parallel engaged two spiral stirrers.

The invention discloses a method for breaking a barrel to make barreled solidified waste oil go out. A barrel cover is completely broken open through a barrel breaking machine along the edge of the barrel cover, the oil barrel is conveyed to a barrel outlet machine after the barrel cover is moved away, most of the solidified waste oil is discharged out through a spiral auger with a scraper, then, the oil barrel is conveyed to a turnover machine and turned over to a vibrating machine, the oil barrel topples over after being vibrated, next, the oil barrel with the oil completely poured out is conveyed to a drying room and indirectly heated through steam so that a small amount of waste oil adhering to the wall of the barrel can fuse and be recycled, and finally, the empty barrel is conveyed to a storage yard. The method for breaking the barrel to make the barreled solidified waste oil go out has the advantages of being efficient in production, low in energy consumption, free of pollution and safe in operation, and subsequent working procedures are not influenced.

The invention relates to a super-porous polysaccharide microsphere product and a preparation method thereof. The mean grain size of the microsphere is 1-500 microns and the mean bore diameter of the microsphere is controllable within a range of 90-800 nm. The preparation method of the super-porous polysaccharide microsphere comprises the following steps of: adding a high-content water-soluble surfactant to a water phase; dispersing the water-phase containing the surfactant to an oil phase to obtain large ports through oil-absorption swelling action of a micelle formed by the surfactant; and preparing the super-porous microsphere through crosslinking and curing of the larger pores. The product can be used as a separating and purifying medium, an immobilized enzyme carrier, a catalyst carrier or a high-efficiency adsorbent and is particularly suitable for being used as a separating medium for biological macromolecules.

The invention discloses an extraction process of ginseng saponin Rd. The extraction process comprises the following steps: S1, grinding ginseng saponin Rd-containing herbal materials into herbal powder, performing reflux extraction by using 70-95% ethanol, recycling the ethanol, and concentrating to obtain a total extract; S2, taking the total extract, enabling the total extract to pass through D101 macroporous adsorption resin, eluting by using 40-80% ethanol, recycling the ethanol, and performing deconperssion concentration to obtain total saponin; S3, taking the total saponin, enabling the total saponin to pass through a silica gel chromatography column, performing isocratic elution by using a mixture of n-butanol, ethyl acetate and water, performing thin layer chromatography, combining fractions to obtain crude ginseng saponin Rd; S4, taking the crude ginseng saponin Rd, enabling the crude ginseng saponin Rd to pass through an Rp-C18 silica gel column, performing isocratic elution by using a mixture of methanol and water, performing thin layer chromatography, combining required components, separating out precipitate to obtain the ginseng saponin Rd. By the extraction process, the ginseng saponin Rd separating and purifying effects can be improved, use of a toxic organic reagent is avoided, the operation is simple and convenient and a production process is easy to control; therefore, the extraction process is suitable for industrial production.

The invention relates to a preparation method of sodium Danshensu with high purity which has simple steps and good purifying effect and which is suitable for industrialized production. The technical steps comprise: (1) extraction: the medicinal materials of salvia is heated and refluxed by a 0.5 mol / L aqueous hydrochloric solution; (2) multi-stage counter-current extraction: medical solution is infiltrated into a multi-stage counter-current extractor, multi-stage extraction is carried out by a n-hexane ethyl acetate (1:1-5) mixed solution; (3) refined salifying: the lower phase solution is taken and is added into alkaline anion exchange resin column to absorb, and uses an alkali solution containing sodium ions to elute, eluent is collected, concentrated and freezed, then sodium Danshensu is obtained after the crystallization is precipitated and separated. The preparation method of Danshensu sodium with high purity has the advantages of simple technology, high yield efficiency and good purity of products.

The invention provides a composite membrane. A porous carrier is adopted as a support body, an organic-inorganic porous material is adopted as a transition layer on the surface of the support body, and a polymer membrane is arranged on the surface of the transition layer. When the composite membrane is applied to gas separation, purification, and the like, a gas penetrates through the polymer membrane and is subjected to secondary separation in the organic-inorganic porous transition layer, compared with the polymer membrane, the composite membrane is excellent in permeability and relatively good gas selectivity, compared with a conventional inorganic porous membrane, the composite membrane is capable of improving gas separation and purification performance. Therefore, the composite membrane has relatively good application prospects in industrial fields such as gas separation, purification, and the like.

The invention discloses an aluminum-titanium-boron alloy produced by virtue of a multi-frequency induction furnace and a production process of the alloy. The aluminum-titanium-boron alloy produced by virtue of the multi-frequency induction furnace consists of the following raw materials: an aluminum ingot, potassium fluotitanate, potassium fluoborate, a diluting buffer, a refining agent and a slag absorbing agent, wherein the slag absorbing agent includes raw materials of sodium chloride, potassium chloride, sodium fluorosilicate and calcium fluoride. The invention provides an important method for producing a high-quality aluminum-titanium-boron series intermediate alloy, and the aluminum-titanium-boron alloy is produced by virtue of the multi-frequency induction furnace; before charging, molten aluminum is refined and is added with a fluoride salt mixture which serves as a heterogeneous nucleation agent in late-phase reaction, so that titanium and boron particle compound generated from the late-phase reaction is more uniform in distribution; by adding the diluting buffer to the fluoride salt mixture, reaction speed is effectively controlled and a separation and purification effect on fluoride salt slag and alloy is enhanced; and upon inspection and analysis, in the product produced by the invention, the titanium and boron particle compound is small, uniform in distribution and low in slag content.

The invention discloses a method for breaking a barrel to pour out barreled liquid and half-solidified waste oil. Firstly, a barrel cover is completely broken open through a barrel breaking machine along the edge of the barrel cover, then, the barrel is turned over to a vibrating machine and topples over after being vibrated, next, the oil barrel with the oil completely poured out is conveyed to a drying room and indirectly heated through steam so that a small amount of waste oil adhering to the wall of the barrel can fuse and be recycled, and finally, the empty barrel is conveyed to a storage yard, and the operation for breaking the barrel to pour out the barreled liquid and half-solidified waste oil is completed. The method for breaking the barrel to pour out the barreled liquid and half-solidified waste oil has the advantages of being efficient in production, low in energy consumption, free of pollution and safe in operation, and subsequent working procedures are not influenced.

The invention belongs to the technical field of radiochemistry, and discloses a plutonium content analysis method. According to the method, plutonium in a sample solution is extracted by utilizing a TTA-xylene solution firstly, then fission elements are further separated by utilizing anionic solid phase extraction pieces and plutonium is purified and condensed, and the purification and separation effect of plutonium is enhanced so that the plutonium content analysis method has advantages of being easy to operate and accurate in plutonium content analysis result.

The invention relates to a crystallization tower for purifying phosphoric acid. The crystallization tower comprises a tower body, one stirrer, a heater and a driving mechanism, wherein the tower body is divided into a cooling crystallization section, a separating purification section and a crystal melting section; the cooling crystallization section is arranged at the upper part of the tower body; the crystal melting section is arranged at the lower part of the tower body; the separating purification section is arranged between the cooling crystallization section and the crystal melting section; a feeding hole and a coolant inlet are arranged at the lower part of the cooling crystallization section of the tower body; the coolant inlet is arranged above the feeding hole; the upper part of the cooling crystallization section of the tower body is provided with a raffinate and coolant discharge hole; the bottom of the crystal melting section of the tower body is provided with a purified phosphoric acid outlet; the main body part of the stirrer is arranged in the tower body; one end of the stirrer extends out of the tower body and is connected with a speed reducer of the driving mechanism; and the heater is arranged on the tower body and is positioned on the crystal melting section of the tower body.

The invention provides a column chromatography device with a warning function. The device solves the problem that the existing chromatography device cannot alarm when the liquid is too much or too little. The device comprises a column body, an upper end socket, a lower end socket and a liquid level alarm, wherein a filler is filled in the column body, the column body is provided with a filler inlet and a filler outlet, the upper end socket is arranged on the upper end of the column body and provided with a liquid inlet, an exhaust port and a back-flushing liquid outlet, the lower end socket is arranged at the lower end of the column body and provided with the liquid outlet, the liquid level alarm is arranged on the upper end socket, and the column body is fixedly connected with the upper end socket and the lower end socket. By arranging the liquid level alarm, the column chromatography device with the warning function provided by the invention is capable of providing the warning function when the liquid is too much or too little under the unwatched state, and the device is reasonable in structure, convenient to operate, low in equipment cost, and suitable for commercial popularization and application.

The invention provides a preparation method of high-quality aluminum-titanium-boron alloy rods and belongs to preparation of refiners. The method is characterized by producing aluminum-titanium-boronalloys through cooperation of a frequency-variable induction electric furnace and a medium-frequency induction electric furnace, refining aluminum liquid before charging, adding a mixture of villiaumite and a diffusion agent, taking the mixture as a nucleating agent of TiAl3 and TiB2 mass points in the alloying process, wherein the TiAl3 and TiB2 mass points formed after completing alloying are fine and are more uniformly distributed; the formation of rod shape of the TiAl3 mass points and the aggregation of the TiB2 mass points are eliminated; the diffusion agent is added into the villiaumitemixture, so that the aggregation of the TiAl3 and TiB2 mass points is effectively controlled; the alloying process is equipped with mechanical stirring, so that the enlargement of the TiAl3 and TiB2mass points is effectively prevented; the separation and purification effect of villiaumite slag and alloys can be improved; through check analysis, the TiAl3 and TiB2 mass points in the produced products are fine, are uniform and dispersive in distribution and are extremely low in slag content; the problems that the TiAl3 mass points in the continuously cast and rolled aluminum-titanium-boron alloy rods in the current market are thick and big, the TiB2 mass points are aggregated, the content of the slag in the alloys is high, and the aluminum-titanium-boron alloy rods are poor in refining capacity in the aluminum alloys are effectively solved.

The invention discloses a method for purifying ligneous alpha-linolenic acid for medicine and application of such method. The method includes the steps of preparing a 0.2-5 mol / L sodium hydroxide-ethanol solution, adding the solution into edible peony seed oil, stirring and saponifying at 30-90 DEG C to obtain saponified liquid, and regulating the pH value to 2-3 by acid liquor; extracting the saponified liquid after acidolysis for multiple times by petroleum ether, mixing the extracting solution, regulating the pH value to be neutral and taking a petroleum ether phase so as to obtain mixed fatty acid; evenly mixing the mixed fatty acid, urea and ethanol according to the weight ratio of 1: 3: 8, freezing at 60 DEG C for 10-50 hours, filtering, recovering the ethanol from the filtrate, regulating the pH value to 2-3, extracting with the petroleum ether, and recovering the petroleum ether in the extract so as to obtain the purified alpha-linolenic acid. The method for purifying the ligneous alpha-linolenic acid for the medicine can be used for preparing the about 90% by mass alpha-linolenic acid as a medical raw material, thereby being high in application value.

The invention provides a detection method of cyantraniliprole and metabolite J9Z38 in fish. The method includes: extraction, purification, determination, fortified recovery test to obtain the fortified recovery of cyantraniliprole and J9Z38 and relative standard deviation (RSDs); detection of the minimum detectable amounts of cyantraniliprole and J9Z38; and acquisition of the minimal detectable concentration of cyantraniliprole and J9Z38 in fish. The present invention establishes an analysis detection method of cyantraniliprole and its metabolite J9Z38 in fish. Acetonitrile is employed for extraction, n-hexane is used for removing fat, protein and other impurities in fish, and the purification separation effect is good. The method has the advantages of relatively simple pretreatment process, high recovery rate, good repeatability, good purification separation effect, and low minimal detectable concentration, and is suitable for analysis and detection of cyantraniliprole and metaboliteJ9Z38 in fish.

The invention relates to a method for detecting fenhexamid in fruits, vegetables or soil. The method comprises the following steps: 1) weighing 5 g of a sample, adding the sample into a 50 mL centrifuging tube, adding 5 mL of acetonitrile, carrying out vortex treatment for 1 min, centrifuging the obtained solution at 4000 r / min for 5 min, collecting the obtained supernatant, carrying out extraction one time by using 5 mL of acetonitrile, collecting and mixing obtained extracts, carrying out rotary evaporation to remove the acetonitrile, and adding distilled water to a constant volume of 10 mLin order to form a solution to be purified; and 2) purifying: providing an MAX small column of 3 cc / 60 mg, respectively sequentially adding 3 mL of methanol and 3 mL of water to activate the MAX smallcolumn, completely introducing 10 mL of the above obtained sample, respectively sequentially leaching the sample with 1 mL of 2% ammonia water and 2 mL of methanol, blow-drying a liquid in the MAX small column by a rubber pipette bulb, eluting the MAX small column with 2 mL of a 1% formic acid methanol solution, concentrating the obtained eluate at 40 DEG C until the eluate is dry, adding methanol to a constant volume of 2.0 mL, allowing the obtained solution to go through a 0.22 [mu]m filter membrane, and detecting the filtered solution. The method improves the lowest detection threshold andimproves the detection sensitivity.

The invention provides an oil smoke separation device of an integrated stove. The separation effect of oil and smoke in oil smoke is improved. According to the oil smoke separation device of the integrated stove, the integrated stove comprises a cabinet body and a side air suction shell and is characterized in that a smoke gathering groove is formed in the side, facing cooking ranges, of the side air suction shell and internally provided with an air suction port; an oil smoke purification plate is arranged in the smoke gathering groove and provided with a cooling cavity; the cooling cavity is filled with cooling liquid; the oil smoke purification plate is connected with a cooling circulation device capable of circularly replacing the cooling liquid in the cooling cavity of the oil smoke purification plate; an air suction machine is further connected with a first exhaust pipe; and the first exhaust pipe is further connected with the input end of an oil smoke purification device. The oil smoke separation device has the advantages of good oil and smoke separation effect and the like.

The invention relates to a method for preparing tea spices, tea spices prepared by the method, and application of the tea spices in preparation of cigarettes. The method for preparing the tea spices sequentially comprises the following steps: performing microfiltration on a tea extracting solution; performing ultrafiltration on the tea extracting solution subjected to microfiltration; performing reverse osmosis treatment on the tea extracting solution subjected to ultrafiltration. According to the tea spice preparation method disclosed by the invention, the effects of separating and purifying the tea extracting solution can be improved, so that the aroma characteristics and stability of the tea spices are improved. Because physical, chemical and biological impurities generating negative effects to cigarette smoking are removed, the tea spices prepared by the preparation method are applied to the cigarettes, tea aroma of the cigarettes is outstanding, and the smoke is obvious in fresh and sweet feeling. Meanwhile, the smoke can be soft and smooth, irritation is reduced, and residues are hidden, so that the cigarette smoking quality and sensory comfort are integrally improved.

The invention discloses a gas purification and separation method based on underground coal gasification. According to the technical scheme, the method includes the steps that raw gas from an underground coal gasification device firstly enters the initial purification process, specifically, the raw gas is subjected to heat exchange through a boiler to generate byproducts including low-pressure steam or hot water, tar and dust are removed through a scrubber tower and an electric precipitator, wet desulphurization and dry desulfurization are used for removing hydrogen sulfide and recycling sulphur, and debenzolization and naphthalene removal are conducted through temperature swing adsorption; then, the gas is compressed and enters the low-temperature separation process and the physical absorption separation process, and carbon dioxide is separated out; afterwards, the gas enters the cryogenic separation process, and methane is separated out; and finally, the remaining gas is carbon monoxide and hydrogen. According to the method, the gas separation procedure is short, the equipment investment cost is low, operation is easy, the separated-out carbon dioxide meets the requirement of serving as an oil-displacing agent for an oil field, the methane meets the requirement of natural gas at the national standard calorific value, meanwhile, the byproducts are the coal tar and the sulphur, and the carbon monoxide and the hydrogen can be used for combined heat and power generation.

The invention belongs to the technical field of radiation environment monitoring, and relates to a method for analyzing uranium isotope content under a reduction system. The analysis method comprises the following steps: (1) preparing a sample solution; (2) carrying out resin separation; (3) drying by distillation; and (4) measuring. By means of the analysis method for the uranium isotope content under the reduction system, an analysis program recommended by ASTM C1000-11 can be optimized, the analysis method is better suitable for analysis of samples with the high content of iron, plutonium and the like, and it is ensured that the analysis result is accurate and reliable.

The invention discloses a method for breaking a barrel to pour out barreled liquid and half-solidified waste oil. Firstly, a barrel cover is completely broken open through a barrel breaking machine along the edge of the barrel cover, then, the barrel is turned over to a vibrating machine and topples over after being vibrated, next, the oil barrel with the oil completely poured out is conveyed to a drying room and indirectly heated through steam so that a small amount of waste oil adhering to the wall of the barrel can fuse and be recycled, and finally, the empty barrel is conveyed to a storage yard, and the operation for breaking the barrel to pour out the barreled liquid and half-solidified waste oil is completed. The method for breaking the barrel to pour out the barreled liquid and half-solidified waste oil has the advantages of being efficient in production, low in energy consumption, free of pollution and safe in operation, and subsequent working procedures are not influenced.

The invention provides a production method of trehalose. The production method comprises the steps of starch gelatinization, liquefaction, saccharification, enzyme deactivation, protein removal, decoloration, primary membrane separation, chromatographic separation, hydrogenation reaction, secondary membrane separation, concentration and crystallization, recrystallization, drying, crushing, screening, packaging and warehousing. According to the production method of trehalose disclosed by the invention, various enzymes are matched, part of maltose generated after enzymolysis of glucoamylase is converted into trehalose, and glucose, oligosaccharide and trehalose in sugar liquid are separated step by step; and by carrying out hydrogenation reaction on the separated oligosaccharide liquid containing a large amount of oligosaccharide and a small amount of trehalose, and trehalose sugar liquid containing a large amount of trehalose and a small amount of oligosaccharide respectively, the oligosaccharide liquid and oligosaccharide in the trehalose liquid are subjected to hydrogenation reaction to generate sugar alcohol; and the sugar alcohol and the trehalose are separated respectively, then the sugar alcohol and the trehalose are concentrated and crystallized, and finally recrystallization and purification are performed respectively, so that the content loss of the trehalose is reduced, the yield is increased, and the separation and purification effects are improved.

The invention discloses a barrel contained solidified waste grease discharging device which comprises a hydraulic oil cylinder, a concave groove guide rail, a lower fixing beam, a motor, a spiral auger, a scraper, guide wheels, an upper fixing beam and a connecting piece. The two ends of the upper fixing beam are fixed to the concave groove guide rail, the hydraulic oil cylinder is mounted on the upper fixing beam, and the hydraulic rod is connected with the lower fixing beam through the connecting piece. The motor is fixed to the lower fixing beam, the shaft of the motor is connected with the spiral auger, and one scraper which is inclined downwards and forms an angle between 25 degrees to 50 degrees with the horizontal level is mounted on the bottom of the spiral auger. The guide wheels are mounted at the two ends of the lower fixing beam, the hydraulic rod pushes the connecting piece to drive the lower fixing beam, the motor, and the spiral auger and the scraper to move up and down along the concave groove guide rail through the guide wheels. The barrel contained solidified waste grease discharging device is efficient in production, low in energy consumption, free of pollution, safe to operate, high in rate of equipment in good conditions and small in maintenance working load, and subsequent work procedures are not influenced.

The invention discloses a method for purifying and separating bacterial cellulose. The method comprises the following steps: placing a bacterial cellulose wet film into distilled water, heating to boiling for 4-16min, then taking out the bacterial cellulose wet film, putting the bacterial cellulose wet film into an alkali solution with a pH value of 9-12, soaking for 3-9min and then taking out, putting the bacterial cellulose wet film into an acid solution with a pH value of 3-6, and soaking for 4-8min; then, centrifuging the bacterial cellulose wet film to obtain bacterial cellulose supernatant; adding mixed liquid of n-butanol and chloroform into the supernatant according to a ratio of 1 to (0.2-1), and extracting for 3-6 times in water bath at the constant temperature of 20-60 DEG C toobtain a protein removal solution; adding an organic solvent as an extractant into the protein removal solution according to a ratio of 1 to (0.22-1) for extracting organic small molecules so as to obtain organic removal liquid; enabling the organic removal liquid to pass through a silica gel chromatographic column and be subjected to column chromatography so as to obtain a bacterial cellulose solution; washing for 2-3 times and then storing in a refrigerator at 8-15 DEG C. The method is high in purification and separation degree, short in period and high in efficiency.

The invention provides a livestock and poultry wastewater treatment device capable of rapidly removing ammonia nitrogen, the livestock and poultry wastewater treatment device comprises a base, the left side of the top of the base is fixedly provided with an inlet, a first water pump and oppositely arranged first support legs, and the tops of the first support legs are fixedly provided with a filter vat; a waste water chamber, a first waste residue chamber and a second waste residue chamber are formed in the filter barrel, the first waste residue chamber and the second waste residue chamber areoppositely arranged, a first water inlet pipe is fixedly installed at the top of the first water pump, and a first waste residue chamber, a second waste residue chamber and a waste water chamber areformed in the filter barrel; the dredger is fixedly mounted at the top of the wastewater chamber, and the contact pins in the dredger are opposite to the filter holes in the filter plate, so the contact pins on the insertion plate can be driven to be inserted into the filter holes in the filter plate for dredging through extension of the electric telescopic rod, the filter holes are prevented frombeing blocked, and the water passing and slag remaining efficiency is improved.

The invention discloses novel and efficient dust collecting equipment for glass grinding. The novel and efficient dust collecting equipment for glass grinding comprises a control panel, a temperature sensor, a dust collection box, a dust discharging box, supporting discs and a micro-perforated sound absorbing plate; the top of a dust collector body is provided with an air inlet, sliding wheels are installed at the bottom of the dust collector body, a towing rod is installed at one side of the dust collector body, the micro-perforated sound absorbing plate is installed on the inner wall of the dust collector body, and a fan box is installed under the air inlet. The novel and efficient dust collecting equipment for glass grinding is scientific and reasonable in structure and convenient to operate; through the temperature sensor, the temperature change in the fan box can be monitored in real time, the phenomenon that the machine breaks down due to the excessively-high temperature after working for a long time is prevented, when the temperature is excessively high, the equipment is automatically powered off to be protected, the loss rate of the equipment is reduced, and the service life of the equipment is prolonged; through the micro-perforated sound absorbing plate, certain sound absorption and noise reduction effects can be achieved, the noise pollution in the working process of the equipment is reduced, and the environment is protected.

The invention discloses an efficient anaerobic reaction tank for large-scale raising of livestock. A central pipeline is arranged at the center of a tank body of the anaerobic reaction tank; a water distribution pipeline is fixedly arranged at the bottom of the central pipeline through a fixed support and is composed of six branch water distribution pipelines; a reflecting cone is arranged below the end part of each branch water distribution pipeline; a reducing pipe is arranged on a position where the central pipeline is in contact with the top of the anaerobic reaction tank; a water inlet pipeline is arranged at the side of the upper end of the central pipeline and is communicated with the six branch water distribution pipelines through the central pipeline; the tank body of the anaerobic reaction tank is provided with an exhaust pipeline at the top end and a drainage pipeline at the side; the top end of the exhaust pipeline is lower than the water inlet pipeline; and the top end of the drainage pipeline is lower than the top end of the exhaust pipeline. According to the efficient anaerobic reaction tank, waste sewage can be sufficiently subjected to anaerobic fermentation reaction by virtue of the water pressure obtained after the reducing pipe is reduced, the self gravity of the waste sewage and the height difference of the central pipeline, so that gas and sewage are effectively separated, and the yield of biogas is increased.

The invention provides an exosome purification integrated method which comprises the following steps: S1, secondary two-stage tangential ultrafiltration, S2, pretreatment of a to-be-extracted solution, S3, particle size and concentration detection of exosomes and S4, freeze-drying, and the invention further provides an exosome purification integrated device. The exosome can be well purified through the method, the method has high practical value, and the problems that a conventional exosome purification method in the market at present is tedious in purification process, long in time and high in cost are solved.

The invention discloses a preparation method of a stevioside selective adsorption material, and relates to the technical field of stevioside purification. The preparation method comprises the following steps: preparing acrylate macroporous resin through a suspension polymerization method; introducing an initiator BIBB to form brominated active sites on the surface of the acrylate macroporous resin to obtain initiator functional resin; and adding the initiator functionalized resin into a polymerization solution in which a boric acid functionalized monomer is dissolved, and grafting the brominated active sites on the surface of the acrylate macroporous resin to obtain the stevioside selective adsorption material. According to the method, through Van der Waals' force and hydrogen bond acting force, the resin with good affinity and high adsorption capacity to stevioside is formed, and boric acid site grafting is performed on the surface of the resin by utilizing the characteristic of specific adsorption capacity of boric acid to cis-diol, so that the enrichment, recovery and separation capacity of the resin to stevioside is effectively improved.

The invention discloses a barrel contained solidified waste grease discharging device which comprises a hydraulic oil cylinder, a concave groove guide rail, a lower fixing beam, a motor, a spiral auger, a scraper, guide wheels, an upper fixing beam and a connecting piece. The two ends of the upper fixing beam are fixed to the concave groove guide rail, the hydraulic oil cylinder is mounted on the upper fixing beam, and the hydraulic rod is connected with the lower fixing beam through the connecting piece. The motor is fixed to the lower fixing beam, the shaft of the motor is connected with the spiral auger, and one scraper which is inclined downwards and forms an angle between 25 degrees to 50 degrees with the horizontal level is mounted on the bottom of the spiral auger. The guide wheels are mounted at the two ends of the lower fixing beam, the hydraulic rod pushes the connecting piece to drive the lower fixing beam, the motor, and the spiral auger and the scraper to move up and down along the concave groove guide rail through the guide wheels. The barrel contained solidified waste grease discharging device is efficient in production, low in energy consumption, free of pollution, safe to operate, high in rate of equipment in good conditions and small in maintenance working load, and subsequent work procedures are not influenced.

The invention relates to a method for separating and purifying total flavonoids from jumi. The special macroporous absorption resin for separating and purifying total flavonoids is adopted to dynamically absorb the total flavonoids in the jumi, after the absorption is saturated, dynamic desorption and distillation are adopted to separate and purify the total flavonoids; after the first-time purification, the sample solution is purified for the second time in the same way; the height to the diameter of a resin bed in an absorption column ranges from 5 to 13, the pH of extract is adjusted to be 5.0-6.0, the room temperature is controlled to be less than or equal to 35 DEG C, the flow rate of the extract is controlled to be 1-2BV per hour, 70% ethanol is adopted to conduct desorption, the desorption solution is distilled, and the total flavonoids is obtained after the ethanol is removed. Due to the special macroporous absorption resin absorbs total flavonoids in jumi with high efficiency, the content of total flavonoids in the product exceeds 85%.