58results about How to "Efficient separation and extraction" patented technology

The invention relates to a technology for purifying scandium, titanium and vanadium from an acid solution step by step. According to the technology, the acid solution obtained by leaching red mud through sulfuric acid is subjected to three-time extraction work, and an extraction organic phase is composed of a P507 extraction agent, a TBP synergist and sulfonated kerosene; in the first-time extraction process, the acid solution is directly subjected to scandium extraction and enrichment without pH value adjustment, after two-phase separation, a scandium-enriched organic phase and a titanium and vanadium containing solution are obtained, the scandium-enriched organic phase is subjected to sulfuric acid scrubbing and reverse extraction of sodium hydroxide, and scandium-enriched liquid is obtained; after the titanium and vanadium containing solution is subjected to pH value adjustment, the second-time extraction work is conducted for enrichment and separation of titanium, after two-phase separation, a titanium-enriched organic phase and a vanadium-containing solution are obtained, and after the titanium-enriched organic phase is subjected to sulfuric acid scrubbing and reverse extraction of hydrofluoric acid, titanium-enriched liquid and the vanadium-containing solution are obtained; and after the vanadium-containing solution is subjected to pH value adjustment and reducing treatment, the third-time extraction is conducted, and after two-phase separation, a vanadium-enriched organic phase and raffinate are obtained. The technology has the beneficial effects that the separation efficiency is high, the enrichment multiple is large, the technology is simple, and the number of the kinds of extraction agents is small.

The invention provides an extraction separation method of synthetic acid dyes illegally added into traditional Chinese medicinal materials. An extraction separation device comprises an extractor upper cover (1), an extractor lower cover (2), a WAX solid-phase extraction column (3), a solid-phase extraction tank (4), a SPE (solid phase extraction) adapter (5), a double-male Luer connecter (6), a Ruhr corker valve (7), an extraction hose (8), a stainless steel mesh (12) and a stainless steel filter disc (13). The extraction separation method can efficiently extract and separate the synthesis acid dyes in shorter consuming time. The invention further provides a rapid detection method of synthesis acid dyes illegally added into traditional Chinese medicinal materials. By the aid of the extraction separation method, synthesis acid dyes are detected by an HPLC (high-performance liquid chromatography) or an HPLC-MS (high-performance liquid chromatography-mass spectrum) system, so that the recovery rate of various synthesis acid dyes is remarkably increased, extraction efficiency is greatly improved, and the detection capability of the rapid detection method is improved, so that the rapid detection method has wide application prospects and good market potential.

The invention discloses a preparation method of high-purity citrus aurantium flower essential oil and flavor addition essence used for cigarettes and blended with the high-purity citrus aurantium flower essential oil. The preparation method of the high-purity citrus aurantium flower essential oil takes fresh citrus aurantium flowers as raw material and comprises the following steps: carrying out atomizing, pre-freezing, vacuum sublimation and drying and crushing treatment on the raw materials in sequence, and filling the crushed citrus aurantium flower raw material and fluid at a supercritical state into an extraction kettle; extracting to obtain crude oil extracted from the citrus aurantium flower supercritical fluid; and carrying out secondary molecular distillation on the citrus aurantium flower crude oil and purifying and separating to obtain the high-purity citrus aurantium flower essential oil. Then the high-purity citrus aurantium flower essential oil is blended with California lemon oil, Brazilian sweet orange oil, caraway oil and alcohol to prepare the flavor addition essence used for the cigarettes. According to the preparation method disclosed by the invention, the citrus aurantium flower oil can be rapidly, efficiently and sufficiently extracted and separated; the operation is simple and convenient, the separation speed is rapid and the production efficiency is greatly improved; and the prepared flavor addition essence used for the cigarettes and blended with the citrus aurantium flower essential oil has soft, fine and smooth smoke and the effect of increasing the sweet taste of the smoke is enhanced.

The invention relates to a method for preparing vanadium pentoxide from high-chrome vanadium slag. The method comprises the following steps: mixing the high-chrome vanadium slag with calcium salt to obtain a mixed material, roasting the mixed material at high temperature to obtain a roasted clinker; leaching the roasted clinker under a leaching medium, namely a (NH4)2SO4-H2SO4 collaborative system, filtering and separating a solid from liquid, and obtaining vanadium-containing leachate and chrome-containing leachate; adjusting the pH value and temperature of the vanadium-containing leachate toprecipitate vanadium, and filtering and separating a solid from liquid, and obtaining ammonium vanadate precipitates and vanadium precipitated supernate; roasting the ammonium vanadate precipitates to obtain ammonium vanadate precipitates, thus preparing a vanadium pentoxide product; and circulating the vanadium precipitated supernate back into a leaching system as a leaching medium. The method disclosed by the invention realizes efficient separation of chrome vanadium in the high-chrome vanadium slag; the purity of the prepared vanadium pentoxide is relatively high, and the obtained vanadiumprecipitated supernate can be circulated back into the leaching process for utilization; cyclic utilization of vanadium precipitated ammonia-nitrogen wastewater is realized; water pollution is avoided; and the production cost is effectively reduced.

The invention discloses a preparation method of heterogeneous cyclohexanone oxime. The method includes the following steps that ammonia and hydrogen peroxide react to generate hydroxylamine under theeffect of a catalyst, then the hydroxylamine reacts with cyclohexanone to generate cyclohexanone oxime, cyclohexanone oxime is extracted in an extraction phase to complete the separation of an organicphase and an inorganic phase, the extraction phase enters subsequent processes after filtering, and after being subjected to membrane separation, and extraction-phase catalyst slurry is returned to an ammoximation reaction kettle to participate in a catalytic reaction again. The ammoximation reaction is performed in a solvent-free state, the use of organic solvents is avoided, the energy consumption is low, there are fewer side reactions and fewer by products, and the subsequent refining process has small pressure. As there is no solvent, the reaction space is saved, and compared with the solvent-containing ammoximation reaction using the same device for production, the yield is improved. A hydroxylamine mechanism serves as a reaction mechanism, the conversion frequency of the hydroxylamine mechanism is about 2.5 times of that of an imine mechanism at 80 DEG C, and the conversion rate of cyclohexanone is high.

The invention discloses a preparation method and application of fermentation products of an edible and medical fungus. On the basis of the characteristics of anabolism route of fermentation products (kaempferol and sinapic acid) of a medical fungus (pycnoporus cinnabarius), seeds of staphylea bumalda are added in the solid fermentation phase, annexin is added in a special fermentation phase, the content of kaempferol and sinapic acid in the liquid fermentation product of pycnoporus cinnabarius is effectively increased; and a novel method is provided for obtaining a product rich in kaempferol and sinapic acid. The edible and medical fungus fermentation product is rich in kaempferol and sinapic acid, can be used to produce health care products and animal feeds, and can also be applied to health care products and animal feeds.

The invention relates to a method for comprehensive recovery treatment of zinc-containing metallurgical dust and sludge and belongs to the technical field of solid waste treatment crossing metallurgical engineering and environmental engineering. Separation of iron and zinc is achieved by selective reduction and magnetic separation of the zinc-containing metallurgical dust and sludge. Zinc coordination dissolution is achieved through zinc-rich powder leaching with a low eutectic solvent. High-purity zinc extraction is then achieved through electrochemical extraction of the leachate. The methodhas advantages of a simple process, mild conditions, environmental friendliness, a low cost and the like, can comprehensively recover iron and zinc metal elements in the zinc-containing metallurgicaldust and sludge, and achieves efficient separation and extraction of zinc.

The invention discloses a jet fuel anti-freezing additive on-line detection system, and relates to the technical filed of jet fuel anti-freezing additive detection. The system comprises an explosion-proof shell, a power switch, a display screen, a keyboard, an oil-inlet conduit, a water-inlet conduit, an oil-outlet conduit, and a water-outlet conduit are arranged on the explosion-proof shell; a power supply, a control circuit, a micro-fluidic system, and a fiber optic spectrometer are arranged in the explosion-proof shell; the micro-fluidic system comprises a micro-fluidic chip for extraction and a plunger pump; the oil-inlet conduit and the water-inlet conduit are respectively communicated with the oil inlet and water inlet of the micro-fluidic chip through the plunger pump, an optical detection flow cell is integrated on the outlet of the micro-fluidic chip, the fiber optic spectrometer is arranged on the two sides of the optical detection flow cell, and the control circuit is connected to the fiber optic spectrometer, the plunger pump, the display screen, and the keyboard. The system can on-line detect the jet fuel anti-freezing additive content, and has the advantages of high sensitivity, rapid detection speed, and user-friendliness.

The invention, which belongs to the technical field of drug residue detection, particularly relates to a method for detecting ribavirin and metabolites thereof in livestock and poultry hairs. The method comprises the following steps: homogeneously extracting ribavirin and metabolites thereof remained in a sample by using a methanol solution of formic acid; dispersing and purifying an extracting solution by using an ethylenediamine-N-propylsilane (PSA) matrix and an octadecylsilane (C18) matrix; and then carrying out ultra-high performance liquid chromatography tandem mass spectrometry detection. Internal standard method quantification is carried out. The mobile phase A is a 0.1% (v/v) ammonium formate and ammonium acetateaqueous solution; the mobile phase B is methanol; the flow velocity is 0.4 mL/min; and the chromatographic column employs an SB-Aq polar column with dimensions of 1.8 micrometers and 3mm*100mm. According to the invention, defects that sampling is difficult, living bodyslaughtering is needed and the like are overcome. The method has high specificity, high sensitivity and short consumed time based on optimization of a sample treatment step; and the sample purification requirement is low. With the provided method, a reliable technical support is provided for supervision of livestock and poultry product quality safety.

The invention discloses a method for extracting and separating a blend of organic matters and water by using triethylamine, and relates to the technical field of green and efficient separation of organic matters and water. Triethylamine is mixed with the blend of organic matters and water; CO2 is introduced for reaction; after the reaction is finished, the upper layer is an organic phase containing the organic matters; then the lower layer is heated or reacts with N2; and water and triethylamine are obtained separately. After the reaction, the upper layer is an organic phase containing the organic matters, wherein the mass fraction of the organic matters can reach 75-95%; the lower layer is heated or further reacts with N2, and the triethylamine can be recycled, and can be utilized circularly. According to the invention, a volatile organic solvent and an inorganic salt used in the prior inorganic salt salting-out process can be replaced, and the method leads the direction of the development of green chemistry and chemical industry.

The invention belongs to the technical field of environmental catalysis, and especially relates to a method of selectively recovering yttrium from CRT fluorescent powder for doping preparation of ternary composite oxide catalyst, which includes the steps of: 1) performing initial treatment to the waste CRT fluorescent powder and performing high temperature alkali melting to prepare an alkali molten product; 2) leaching the alkali molten product with ammonia water and performing solid liquid separation to removal a major impurity, zinc; 3) performing extraction with diluted hydrochloric acid and enriching and recovering rare earths through a two-step precipitation method, and performing secondary extraction with diluted hydrochloric acid to obtain a rare earth extract liquid; 4) preparing yttrium oxalate by combining photochemical method and chemical precipitation method; 5) performing coprecipitation to obtain the ternary composite oxide catalyst. The method can high-effectively separate and extract and fully utilize the rare earths in the waste CRT fluorescent powder. By doping the yttrium, low temperature denitration performance of the catalyst is significantly improved. The method reduces production cost of the catalyst and actually achieves treating waste by waste.

The invention relates to a process for pharmacodynamically active ingredients efficiently from root of Brassica rapa.A pyrrolidine salt is used as an extracting agent, a nonionic surfactant (fatty alcohol-polyoxyethylene ether) is used as an extracting aid, an extracting separating mode combining microwave-assisted extraction and efficient counter-current chromatography, the unique functions of microwave such as plant tissue extracting, electromagnetic heating and microwave shaping and cleaning are given to full play, dissolution rate of a target is effectively increased, and the process has the advantages of high efficiency, high speed, no pollution to samples and the ability to mass separation, extracting yield is greatly increased, and the process has promising industrial application prospect and market prospect.

The present invention relates to the technical field of traditional Chinese medicines and particularly relates to a gynecological external use decontamination medicine and a preparation method thereof. The product is mainly prepared from the following raw materials: tender folium artemisiae argyi, green tea, dried gingers, roses, blumea balsamifera and dandelion. The tender folium artemisiae argyiand green tea are used as monarch drugs; the dried gingers and blumea balsamifera are used as ministerial drugs; and the roses and dandelion are used as adjuvant and conductant drugs. The gynecological external use decontamination medicine has effects of warming and promoting main and collateral channels, removing dampness and stopping itching, and preventing micro-organisms and stopping pains, and is suitable for postpartum and menopausal women skin safe cleaning, limb and joint pains, dry and itching skin, skin eczema, etc. Repeated high-pressure differential fluid wall breaking, continuousgradient molecular sieve filtration, low-temperature concentration and drying crystallization, near-infrared spectroscopy on-line analysis and other molecular directional extraction techniques are combined to maximally screen heavy metals, pesticide residues, chemical residues, impurities and other harmful and invalid ingredients and high-efficiently and completely separate and extract active ingredients.

The invention provides a flocculation extraction separation method of zinc and cobalt ions, and relates to the technical field of extraction separation. The flocculation extraction separation method of zinc and cobalt ions comprises the following steps: leaching zinc-cobalt-containing waste residue with nitric acid or sulfuric acid to obtain a leachate; adding zinc powder to the leachate, and removing impurity components to obtain a purified liquid; adjusting the pH of the purified liquid with an alkaline reagent to obtain a flocculent suspension, mixing the flocculent suspension with an extracted organic phase containing P204, obtaining a loaded organic phase and a raffinate through an extraction reaction, and using the raffinate to recover cobalt; reversely extracting the loaded organicphase to obtain a zinc ion solution, and then recovering zinc. The alkaline reagent is added to convert metal ions to a hydroxide flocculent precipitate; the hydroxide flocculent precipitate has a large specific surface area, high specific surface energy and chemical reactivity, and can rapidly undergo an extraction reaction with acidic P204, the single-stage reaction rate is high, the extractionreaction is thorough, the amount of P204 is small, the separation effect is good, and the application prospect is broad.

The invention provides a method for synchronously extracting and separating lycium barbarum protein and polysaccharide, and relates to the field of food deep processing. The method comprises the following steps: extracting a wolfberry raw material by using a deep-eutectic solvent to obtain a wolfberry extract, the deep-eutectic solvent being composed of a hydrogen bond donor and a hydrogen bond acceptor, the hydrogen bond donor being urea and water, and the hydrogen bond acceptor being sodium acetate; separating out lycium barbarum protein and polysaccharide in the lycium barbarum leach liquor by using ethanol to obtain a mixture of the lycium barbarum protein and the polysaccharide; separating the mixture of the lycium barbarum protein and the lycium barbarum polysaccharide to respectively obtain the lycium barbarum protein and the lycium According to the method, the protein and polysaccharide can be synchronously extracted and separated from the lycium barbarum, the extraction rate and purity of the obtained lycium barbarum protein and polysaccharide are obviously higher than those of a single extraction method, and the method has the advantages of high efficiency, low energy consumption, low cost, convenience in operation, novelty, greenness, no discharge of three wastes, recyclable solvent and the like.