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 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 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 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 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 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 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.