81results about How to "Rapid phase separation" patented technology

Laboratory Automated System and method for specimen processing, comprising several Clinical and Biological Analytical Modules is provided. The Module consists of coupling centrifuge, analyzers and robot. System produces rapid phase separation, cap removing and testing in one sequential, unbroken process. Several multi-item carriers for tubes and microplates loading provided.

The invention relates to an aqueous two-phase separation method for total flavonoids, saponins and polysaccharides in astragalus. The method comprises the following steps of smashing an astragalus medicinal material; adding a solvent and performing solid-liquid extraction; filtering and removing impurities to obtain crude extract of the total flavonoids and the saponins of the astragalus; taking and concentrating the crude extract of the astragalus; adding an aqueous two-phase system formed by absolute ethyl alcohol/dipotassium hydrogen phosphate, adding water to make the total amount of the system be a constant value; mixing uniformly and standing, wherein the aqueous two-phase system is divided into an upper phase and a lower phase; taking an ethanol phase which contains a large amount of total flavonoids and saponins of the astragalus out; and concentrating the ethanol phase under a reduced pressure to obtain the extract of the total flavonoids of the astragalus. The method has the beneficial effects that the extraction rate of the total flavonoids and the total saponins of the astragalus; simultaneously the total flavonoids and the total saponins can be separated from the polysaccharides of the astragalus in the crude extract; the used solvent is low in toxicity, favorable to environment friendliness and low in cost; the inactivation or the denaturation of the flavonoids and the saponins of the astragalus cannot be caused; the phase separation time is short; the interfacial tension is low; and residual organic solvent does not exist.

The invention discloses a process of directly reducing liquid high lead slag in reducing furnace, secondary lead-containing materials such as the liquid high lead slag, lead concentrate, scrap leads, waste accumulators and the like generated from the oxygen bottom blowing smelting furnace or zinc leaching residues are used as raw materials and are added from the top end of the reducing furnace; coal powder and natural gas used as fuel and oxygen-enriched air used as combustion improver are continuously led in from the top of the reducing furnace to carry out combustion reaction; the temperature in the reducing furnace is kept at 1000-1500 DEG C; the coal powder and natural gas can be simultaneously used as reducing agents and fall into the reaction tank at the bottom of the reducing furnace after being fully mixed with the raw materials; the lead oxides in the raw materials are reduced to crude lead and the addition of the reducing agents is subject to full reduction of the lead oxides in the raw materials. The process of the invention directly reduces the liquid high lead slag, fully utilizes the thermal energy of the high lead slag and further reduces the coke consumption and flue gas volume, thereby dramatically reducing the smoke dust rate and the smelting cost.

The invention relates to a solid-liquid enrichment separation method for tobacco sheet wastewater in a paper-making method. Nicotine and other components in the wastewater are enriched to a solid phase for separation, wherein the COD removal rate in single-stage separation can reach 70-80 percent; and then a biomedical forced aerobic method or anaerobic/aerobic method are adopted to treat, reuse or discharge the treated water, and the sludge solid can be reused. The solid-liquid enrichment separation method comprises the following steps: blocking slag by grilling; performing coagulation and enrichment reaction; settling; performing subsequent treatment clear water on an upper layer; concentrating sludge solid, and other steps. The solid-liquid enrichment separation method has the advantages that: the prepared calcium-magnesium compound coagulants are easily prepared and can be prepared into quality-grading formulations aiming at fluctuation of the wastewater; the obtained sludge solidobtained by separation is rich in nicotine and other components which can be subsequently extracted as active ingredients of biogenic pesticides; the extracted dry soil powder can be totally used as loading agents of powder pesticides; and special treatment facilities and equipment are unnecessarily used, and the investment and operating cost of biochemical facilities can be reduced simultaneously.

The invention provides an aqueous two-phase extraction system formed by anion/cation mixed surfactant which is induced by fluoroalcohol, a preparation method and an application thereof. The aqueous two-phase extraction system comprises anion surfactant sodium dodecyl sulfate, cation surfactant hexadecyl trimethyl ammonium bromide, hexafluoroisopropanol and water. The extraction system has short phase forming time, wide phase forming range, gentle and simple phase forming condition, low consumption and high efficiency, so the extraction system is a novel extraction system. The invention can extract and separate different types of compounds through the phase forming conditions of the system, so the application prospect is good.

The invention belongs to the technical field of medicines, and relates to a two-aqueous-phase method for extracting total saponin from bittersweet herb. The Two-aqueous-phase method for extracting total saponin from bittersweet herb is characterized by comprising the following steps of: pulverizing bittersweet herb, adding to a solvent, carrying out solid-liquid digestion and then filtering for impurity removal to obtain a coarse extract of the bittersweet herb; concentrating the coarse extract of the bittersweet herb to 1/5 of the original volume, adding to a two-aqueous-phase system formed from absolute ethyl alcohol/ammonium sulfate, adding water to ensure that the total amount of the system is a certain value, uniformly mixing and then standing to form an upper phase and a lower phase; and taking out the absolute ethyl alcohol phase containing a great amount of total saponin of the bittersweet herb, and then carrying out pressure-reduction concentration on the absolute ethyl alcohol phase obtain a total saponin extractive of the bittersweet herb. The two-aqueous phase method has the beneficial effects that the extraction rate of the total saponin of the bittersweet herb is improved; as the used solvent has low toxicity, the method is beneficial to environmental protection; and simultaneously the method has convenience and economy.

The invention provides a preparation method of a microcapsule for preparing a temperature-adjusting textile product. The preparation method comprises the following steps: mixing mixed liquid of sodium alginate and calcium carbonate, paraffin and a water-oil composite emulsifying agent, and performing emulsifying reaction to obtain oil-in-water emulsion; mixing the obtained oil-in-water emulsion, petroleum ether and an acidic solvent, and performing curing reaction to obtain a primary microcapsule; performing condensation reaction on the obtained primary microcapsule and a chitosan acidic solution to obtain the microcapsule for coating the surface of the textile product. Results of embodiments show that after the temperature-adjusting textile product, of which the surface is coated with the microcapsule prepared by the method, is washed with water for 1 to 5 times, the mass loss rate is lower than 5 percent, so that the firmness of a phase-change material and a base fabric is high.

The invention discloses a method for separating palladium and copper from a solution containing copper, cobalt and nickel. The method employs acylthiourea as an extractant and melted wax as a diluent, Pd and Cu in the copper cobalt nickel palladium system can be selectively separated with a high recovery rate (the recovery rate of Pd and Cu can reach 99.9%) by controlling an acidity of copper cobalt nickel palladium system. According to the invention, the method for extracting palladium has the advantages of short balance time, high enrichment degree and fast phase-splitting; palladium and copper can be continuously extracted and separated from an acidic aqueous solution containing palladium at a time. The extractant enables a recycling use, and has small harm on environment, which has significant meaning for improving the recovery rate of non-ferrous smelting of the precious metals.

The invention belongs to the technical field of glass fibers, and specifically relates to a low-bubble low-dielectric glass fiber composition and a production process thereof. The composition comprises the following components: 55.0-58.0% of SiO2, 19.0-21.0% of B2O3, 13.5-15.0% of Al2O3, 2.5-4.5% of MgO, 3.0-5.0% of CaO, 3.0-3.3% of ZrO2, less than or equal to 0.5% of K2O+Na2O and less than or equal to 0.5% of Fe2O3. The invention further provides the production process of the composition. The production process provided by the invention solves problems of poor melting property and poor homogenization and clarification effect of low-dielectric glass fibers by strictly regulating the grain size grade of each raw material and controlling the grain size dispersity of each raw material, and solves problems of high viscosity and easy phase separation of the low dielectric glass fibers by adjusting the proportion of each component through optimizing the formula.

The invention discloses a ceramic bonding agent, a preparation method thereof and an application in a CBN grinding wheel, wherein the ceramic bonding agent is prepared from the following components inparts by weight: 41.0 to 44.5 parts quartz, 4.0 to 5.5 parts of alumina, 19.0 to 21.0 parts of boric acid, 3.0 to 5.0 parts of zinc oxide, 6.0 to 8.0 parts of lithium carbonate, 2.5 to 3.5 parts of sodium carbonate, 15.0 to 17.5 parts of barium carbonate, 2.0 to 3.5 parts of strontium carbonate. The preparation method of the ceramic bonding agent comprises the following steps: material preparation step, mixing step, melting step, water quenching step, ball milling step, particle size detection step and drying step. The ceramic bonding agent wets and coats the CBN abrasive particles well, increases the holding force of the bonding agent to the abrasive particles, and improves the strength of the bonding agent.

The invention discloses a method for extracting procyanidine from grape seeds by utilizing an aqueous two-phase system. The method comprises the following steps: 1) pretreating a material, namely drying grape seeds in a drying oven at the temperature of 50-80 DEG C for 18-36 hours, and grinding into powder; and 2) performing aqueous two-phase extraction, namely adding an aqueous two-phase extraction solution composed of ethanol, ammonium sulfate, distilled water and sodium chloride into a centrifugal device, adding the grape seed powder, fully mixing, centrifuging at a rotating speed of 3000-6000 revolutions per minute for 10-15 minutes, and standing for extracting, thereby obtaining procyanidine, wherein the aqueous two-phase extraction solution is composed of 30 wt%-35wt% of ethanol, 20wt%-25wt% of ammonium sulfate, 1.8 wt%-2.2wt% of sodium chloride and the balance of distilled water; and a mass ratio of the grape seed powder to the aqueous two-phase extraction solution is 1:(16-30). The method is rapid in phase separation and low in time consumption, the moisture content of the extraction system is high, an extract can be effectively prevented from being inactivated or denatured, the separation process is complete and economic and is simple in operation, and enlarged production and continuous operations are facilitated.

The invention provides a method for separating and purifying phycocyanin by means of combination of two aqueous phase extraction and ultrasonic waves. The method comprises the particular operating steps that spirulina is subjected to wall breaking through a repeated freezing and thawing method, supernatant is collected, and a crude phycocyanin extracting solution is obtained; glucan and inorganic salt two aqueous phase extraction is adopted, the crude phycocyanin extracting solution is put in ultrasonic waves for ultrasonic treatment for 15 min to 30 min, standing is conducted for 10 min to 15 min, the upper phase is taken and subjected to dialysis in a dialysis membrane with the molecular mass cut-off of 5,000 for 12 h to 20 h, freeze drying is conducted, and phycocyanin powder is obtained. The method for purifying the phycocyanin by means of combination of two aqueous phase extraction and the ultrasonic waves has the advantages of being high in selectivity and high in system phase-separation speed, operation is easy and convenient, equipment is conventional, and the method is suitable for industrial production. The phycocyanin purity of the phycocyanin powder prepared through the method reaches up to (A620/A280) 3.78, and the total yield reaches up to 90.6%.

The invention discloses a double-water phase extracting system and a method of separating and purifying alpha-amylase inhibitor by it. And its phase forming reagents includes polyglycol and fructose-1, 6-diphosphoric metal salt that have stabilizing and protecting effect on the bioactivity of biochemical product. It applies the double-water phase system to the process of separate-extracting alpha-amylase inhibitor, uses the advantages of the double-water phase system: fast to separate phase, simple and convenient to operate and easy to amplify.

A photochemical vapour generator is disclosed having a reaction chamber with a liquid sample inlet, a carrier gas inlet and a carrier gas outlet. A liquid sample support surface for supporting a film of a liquid sample is in the reaction chamber. A source of ultraviolet radiation is positioned in radiative contact with the liquid sample support surface. Also described is a process for detecting and/or quantifying an analyte by providing a liquid film of a sample containing an organic acid or a salt thereof and a precursor compound of the analyte, exposing the liquid film to ultraviolet radiation to generate a volatile species of the analyte, separating the volatile species from the liquid film to form a vapour containing the volatile species, and directing the vapour to a detector to detect and/or quantify the analyte in the vapour. Amalgamation of photochemical reactions with thin film generation and gas-liquid phase separation achieves the benefits of all of these principles in a single unit, providing a simple and effective way of enhancing generation of an expanded suite of elements.

The invention relates to a method for extracting flavones in Sorbus alnifolia through coupled supersonic wave-aqueous two-phase system. The method is characterized by comprising the following concrete steps: step 1) carrying out extraction and separation of flavones in Sorbus alnifolia leaves, wherein a propanol- ammonium sulfate aqueous two-phase system is used and upper-phase liquid and lower-phase liquid are obtained; step 2) subjecting the lower-phase liquid obtained in the step 1) to cooling, crystallization, filtering and recovery of ammonium sulfate crystals; and step 3) subjecting the upper-phase liquid obtained in the step 1) to purification with absolute ethyl alcohol, concentration and drying so as to obtain a finished product. The method has the advantages that phase-splitting is rapid; extraction and separation processes are integrated; the concentration and purity of the flavones in an upper phase are increased; material consumption is reduced; toxicity is low; ethanol and ammonium sulfate are easy to recycle; the recovery rate of flavones in Sorbus alnifolia leaves is high; the method is simple, easy to control, free of influence by environment, low in cost and suitable for industrial production.

A syringe device for separating liquids of different densities is provided with a hollow syringe barrel, a perforated plunger seal with a seal hole, and a hollow plunging tube with a closed bottom with at least one tube hole. The perforated plunger seal has an outer perimeter that resides flush against an interior surface of the hollow syringe barrel. The tube hole is in operational relationship with the seal hole. Optionally, a relief hole is provided on a top portion of the hollow plunging tube to allow a user to create vacuum pressure as necessary.

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.