33results about How to "No extraction" patented technology

The invention relates to a poly(vinylidene fluoride-hexafluoropropylene)-based lithium-ion battery diaphragm and a preparation method thereof. The diaphragm is prepared by a phase inversion method comprising the following steps of dissolving poly(vinylidene fluoride-hexafluoropropylene), a modified polymer and nanometer filler under the certain ratio in an organic solvent, adding a nonsolvent after stirring and mixing uniformly at the certain temperature, continuously stirring till the nonsolvent is dispersed uniformly, de-foaming, coating, drying and the like to obtain the poly(vinylidene fluoride-hexafluoropropylene)-based lithium-ion battery diaphragm. The poly(vinylidene fluoride-hexafluoropropylene)-based lithium-ion battery diaphragm disclosed by the invention has the advantages that the thickness is uniform and is easy to control, the cellular structure is uniform, the mechanical strength is high, and the industrialization is easy to be realized.

The invention relates to a method for extracting vanadium from vanadium titano-magnetite. The method comprises the following steps: carrying out crushing, ore grinding and dry weak magnetic separation pretreatment on crude vanadium titano-magnetite to obtain vanadium-iron concentrate and mine tailings; mixing the vanadium-iron concentrate with calcium fluoride and a sulfuric acid solution, carrying out stirring leaching to obtain acid leaching slag and an acid leaching solution, mixing the acid leaching solution with sodium chlorate and a sodium hydroxide solution, stirring to obtain vanadium-rich slag and an acidic waste solution, and returning the acidic waste solution to the acid leaching step of the vanadium-iron concentrate; mixing the vanadium-rich slag with sodium carbonate, carrying out high temperature oxidization roasting to obtain a roasted sample, carrying out circulating water leaching on the roasted sample to obtain water leaching slag and a vanadium-rich solution, washing the water leaching slag by using water to obtain iron concentrate and a water washing solution, and returning the water washing solution to the circulating water leaching of the roasted sample of the vanadium-rich slag; and carrying out vanadium precipitation calcining on the vanadium-rich solution to obtain a product vanadic anhydride. The method has the characteristics of simple process, no pollution, high vanadium recovery rate, low content of impurities in the leaching solution, high purity of the product, and wastewater recycling.

The invention relates to a combined technological method for maximum production of light aromatic hydrocarbon from hydrogenated diesel oil. The method includes: firstly letting hydrogenated diesel oil enter an I section adsorption separation device to obtain an I section alkane component rich in cycloalkane and alkane and an I section heavy aromatic hydrocarbon component rich in aromatic hydrocarbon; sending the I section alkane component into a cycloalkane dehydrogenation reactor to obtain a cycloalkane dehydrogenation product rich in aromatic hydrocarbon, conducting gas-liquid separation, and letting the liquid phase enter an II section adsorption separation device so as to obtain an alkane component rich in alkane and an II section heavy aromatic hydrocarbon component rich in aromatic hydrocarbon; letting the I section heavy aromatic hydrocarbon component, the II section heavy aromatic hydrocarbon component and hydrogen enter a heavy aromatic hydrocarbon conversion reactor to obtain a light aromatic hydrocarbon product rich in BTX, and performing separation to obtain hydrogen, returning the hydrogen and part of C9<+> heavy aromatic hydrocarbon together to the heavy aromatic hydrocarbon conversion reactor for further reaction, and taking the rest C9<+> heavy aromatic hydrocarbon, dry gas, liquefied gas, C5-C6 non-aromatics and BTX product as the products. The method realizes maximum production of light aromatic hydrocarbon, and has the advantages of strong raw material adaptability, high yield of light aromatic hydrocarbon, low hydrogen consumption and no need for aromatic hydrocarbon extraction.

The invention relates to a preparation method of a chamomile chewable tablet, which is characterized in that the preparation method comprises the following steps of (1) soaking, drying chamomile, removing a sweet and bitter taste of the chamomile, (2) respectively crushing and sieving dextrin, microcrystalline cellulose, dry starch, a filling agent and cane sugar, and then mixing uniformly, (3) adding water according to a proportion of 1g water to 7-8g auxiliary material mixture, preparing a soft material, (4) allowing the prepared soft material to pass through a 40-mesh sieve, drying till the moisture content is 2-5%, allowing obtained dry particles to pass through the 40-mesh sieve again, and (5) uniformly mixing a vitamin C, chamomile petals treated in Step (1) and the dry particles obtained from Step (4), spraying magnesium stearate on a mold, tableting at 240-340N, and conducting vacuum packaging. The chamomile chewable tablet is simple in technology, convenient to eat, sweet and sour in taste, complete in appearance, bright and clean in surface, moderate in hardness, easy to preserve and chewy, preserves nutritional ingredients of the chamomile and has a milk flavor and no rough sense when people have a taste; and the surface of the chamomile chewable tablet has natural flower patterns formed after the chamomile petals are squeezed.

The invention discloses a self enzymolysis approach method of baicalein and wogonin in scutellaria baicalensis. The measurement method disclosed by the invention comprises the following steps of: carrying out enzymolysis on saponin compounds, such as baicalin, wogonoside, and the like in an aqueous solution by utilizing enzyme contained in scutellaria baicalensis at a proper temperature; after finishing enzymolysis, adding acid methanol; maintaining the stability of the baicalein when killing scutellaria baicalensis enzyme; fully dissolving emzymatically-decomposed baicalein; and filtering and adding filtered liquid as a sample solution. The baicalein and wogonin in the scutellaria baicalensis are simultaneously measured by an HPLC (High Performance Liquid Chromatography) by using a methanol-0.1 percent phosphoric acid solution with the volume ratio of (51-54):(49-46) as a mobile phase and 275nm as a detecting wavelength. The method has the advantages of simplicity, convenience, high speed, complete enzymolysis of components to be detected, and favorable wave crest separation. The self enzymolysis approach method of baicalein and wogonin in scutellaria baicalensis is reported for the first time and provides real basic content data for the full extraction and separation of the components. A content practical measured value of the baicalein is larger than a theoretical value calculated by molecular weights of baicalin and baicalein.

The invention relates to the technical field of environment detection, in particular to a detection method of organic acids in an environment. The detection method comprises the following steps: acquiring an environmental sample; per-treating the sample: removing particulate matters and heavy metals; detecting a sample by using an ion chromatography; the elution procedure is shown as follows: 0.0-17.0 min in case of KOH concentration being 1.0 mM, 17.0-25.0 min in case of KOH concentration being 30.0 mM and 25.0-30.0 min in case of KOH concentration being 1.0 mM. The detection method has the benefits that the detection limit of the organic acids is low, detection requirements for the sample with lower content of the organic acids can be met, and a quick and effective method can be provided for simultaneous detection of formic acids, acetic acids, propionic acids, butyric acids and other small-molecular weight organic acids in surface water, underground water, waste water, ambient air, waste gas and other environmental samples.

The invention relates to the field of wire end insulation treatment process and discloses a lithium battery wire exposed wire end insulation production process. The production process comprises stepsof heating and melting a low-viscosity hot melt adhesive to obtain low-viscosity hot melt adhesive solution; immersing an exposed wire end of a wire into the low-viscosity hot melt adhesive solution,and carrying out adhesive coating operation; pulling out the exposed wire end from the low-viscosity hot melt adhesive liquid, suspending the exposed wire end above a liquid level of the low-viscosityhot melt adhesive liquid, and carrying out wire breaking and adhesive sealing operation so as to form an adhesive sealing sleeve on the exposed wire end. The production process is advantaged in thatthe low-viscosity hot melt adhesive is used for forming the adhesive sealing sleeve on the exposed wire end, insulation operation is simple and convenient, residual adhesive is not easy to generate, sealing coating property of the exposed wire end is better, a problem of short circuit of the exposed wire end of the wire is solved, a problem of damp oxidation of the exposed wire end is solved, thetin-absorbing effect of the exposed wire end is good, cost of the low-viscosity hot melt adhesive is far lower than that of insulating tape and a sleeve, and the production benefit can be increased bymore than 300%.

The invention relates to a combined technological method for maximum production of light aromatic hydrocarbon from hydrogenated diesel oil. The method includes: firstly letting hydrogenated diesel oil enter an I section adsorption separation device to obtain an I section alkane component rich in cycloalkane and alkane and an I section heavy aromatic hydrocarbon component rich in aromatic hydrocarbon; sending the I section alkane component into a cycloalkane dehydrogenation reactor to obtain a cycloalkane dehydrogenation product rich in aromatic hydrocarbon, conducting gas-liquid separation, and letting the liquid phase enter an II section adsorption separation device so as to obtain an alkane component rich in alkane and an II section heavy aromatic hydrocarbon component rich in aromatic hydrocarbon; letting the I section heavy aromatic hydrocarbon component, the II section heavy aromatic hydrocarbon component and hydrogen enter a heavy aromatic hydrocarbon conversion reactor to obtain a light aromatic hydrocarbon product rich in BTX, and performing separation to obtain hydrogen, returning the hydrogen and part of C9<+> heavy aromatic hydrocarbon together to the heavy aromatic hydrocarbon conversion reactor for further reaction, and taking the rest C9<+> heavy aromatic hydrocarbon, dry gas, liquefied gas, C5-C6 non-aromatics and BTX product as the products. The method realizes maximum production of light aromatic hydrocarbon, and has the advantages of strong raw material adaptability, high yield of light aromatic hydrocarbon, low hydrogen consumption and no need for aromatic hydrocarbon extraction.

The present invention discloses a voriconazole bulk drug synthesis process, which comprises: preparing halogenated ethyl fluoropyrimidine, and carrying out a Grignard reaction; oxidizing 2-(2, 4-difluorophenyl)-3-(1, 2, 4-triazole-1-yl)-1, 2-propylene glycol to obtain an epoxypropane compound; and mixing the Grignard reagent with an epoxypropane compound, and reacting to obtain voriconazole. According to the synthesis process provided by the invention, the reaction steps can be simplified, palladium carbon is not needed for dechlorination hydrogenolysis, the reaction period is shortened, in addition, the energy consumption is reduced, the cost is reduced, and the voriconazole and the racemate thereof are obtained at a relatively high yield.

The invention discloses a medical low-temperature steam formaldehyde sterilization cabinet and a sterilization method thereof. The medical low-temperature steam formaldehyde sterilization cabinet comprises a cabinet body, a sterilization cavity, a formaldehyde water solution medicine feeding device, a steam generator, an electric control device, an evacuating device and a clean air supplying system, wherein the sterilization cavity comprises a sterilization chamber, a heating jacket and a sterilization chamber door; the steam generator comprises a heat supply medium box; a formaldehyde vaporization pipeline, a heating device, a heat supply medium pipeline port, a low-temperature steam outlet and a waste liquid outlet are formed in the heat supply medium box; a medicine outlet pipeline of the formaldehyde water solution medicine feeding device is connected to the inlet of the formaldehyde vaporization pipeline; the outlet of the formaldehyde vaporization pipeline is connected to the sterilization chamber; the low-temperature steam outlet is connected to the sterilization chamber and the heating jacket through pipelines; the evacuating port of the evacuating device is connected to the sterilization chamber; the air supply end of the clean air supplying system is connected to the sterilization chamber. By mixing the low-temperature steam and the formaldehyde gas for sterilization at the vacuum state, the sterilization effect is complete without dead angle, and the residual formaldehyde gas can be eliminated completely after sterilizing.

The invention relates to a method for extracting vanadium from vanadium titano-magnetite. The method comprises the following steps: carrying out crushing, ore grinding and dry weak magnetic separation pretreatment on crude vanadium titano-magnetite to obtain vanadium-iron concentrate and mine tailings; mixing the vanadium-iron concentrate with calcium fluoride and a sulfuric acid solution, carrying out stirring leaching to obtain acid leaching slag and an acid leaching solution, mixing the acid leaching solution with sodium chlorate and a sodium hydroxide solution, stirring to obtain vanadium-rich slag and an acidic waste solution, and returning the acidic waste solution to the acid leaching step of the vanadium-iron concentrate; mixing the vanadium-rich slag with sodium carbonate, carrying out high temperature oxidization roasting to obtain a roasted sample, carrying out circulating water leaching on the roasted sample to obtain water leaching slag and a vanadium-rich solution, washing the water leaching slag by using water to obtain iron concentrate and a water washing solution, and returning the water washing solution to the circulating water leaching of the roasted sample of the vanadium-rich slag; and carrying out vanadium precipitation calcining on the vanadium-rich solution to obtain a product vanadic anhydride. The method has the characteristics of simple process, no pollution, high vanadium recovery rate, low content of impurities in the leaching solution, high purity of the product, and wastewater recycling.

The invention relates to a HPLC (High Performance Liquid Chromatography) quantitative method for cephaeline hydrochloride and ipecine hydrochloride in an ipecacuanha medicinal material and a preparation of ipecacuanha medicinal material. The method is characterized by comprising the following steps: firstly, performing common isocratic elution according to PHLC method, and taking acetonitrile-carbinol-0.1% of phosphoric acid at a volume ratio of (8-9.5):(3-5):(86-88) as a flowing phase, wherein a detecting wavelength is 205nm; and simultaneously measuring the contents of the cephaeline hydrochloride and ipecine hydrochloride in the ipecacuanha medicinal material and a fluid extract, extract and tincture thereof so as to end the history of the measurement of total alkaloids of the ipecacuanha alkaloids in an acid base titration form according to the standard in multiple countries: after performing column chromatography separation for 4 times, respectively measuring the cephaeline hydrochloride and ipecine hydrochloride through delta A at 283nm and 350nm by adopting differential spectrophotometry. According to the method, only acidic aqueous carbinol or aqueous carbinol is used; after fine powder of the medicinal material is ultrasonically extracted or each preparation is diluted, a certain amount of subsequent filtrate is absorbed; and an alumina column is used for removing impurities so as to measure. The method is quick, convenient, accurate and capable of reappearing.

A process for synthesizing 3,5-disubstituent-1-adamantanol includes reaction between 1,3-disubstituent adamantane and bromine to obtain bromo compound, adding sodium oxalate and water, reaction, filtering and washing.

The present invention relates to a melting preparation method of high-strength and high-modulus polyvinyl alcohol fibers. The method is as follows: 0-40 parts of carbohydrates, 0-20 parts of polyol ester and 30-60 parts of water are mixed to prepare a composite plasticizer, and the The compound plasticizer is added into 100 parts of polyvinyl alcohol to mix and swell in the way of spraying in the shape of a shape, and then melted and extruded by a single-screw extruder to obtain primary fibers. The primary fibers are dried, multi-stage stretched, and heat-set. High-strength and high-modulus polyvinyl alcohol fibers can be obtained. The advantages of the present invention are as follows: 1) The tensile strength of the prepared fiber is ≥1570MPa, the elastic modulus is ≥35.4GPa, and the elongation at break is ≤6.0%; 2) The composite plasticizer strengthens the interaction between water and macromolecules, Improve the spinning stability; 3) The plasticizer is not easy to migrate and precipitate, so that the mechanical properties of the fiber are stabilized; 4) The plasticizer is added to the polyvinyl alcohol in the form of mist spray to make the two evenly contact and ensure swelling The degree of uniformity ensures the uniformity of the finished fiber.

The invention discloses a self enzymolysis approach method of baicalein and wogonin in scutellaria baicalensis. The measurement method disclosed by the invention comprises the following steps of: carrying out enzymolysis on saponin compounds, such as baicalin, wogonoside, and the like in an aqueous solution by utilizing enzyme contained in scutellaria baicalensis at a proper temperature; after finishing enzymolysis, adding acid methanol; maintaining the stability of the baicalein when killing scutellaria baicalensis enzyme; fully dissolving emzymatically-decomposed baicalein; and filtering and adding filtered liquid as a sample solution. The baicalein and wogonin in the scutellaria baicalensis are simultaneously measured by an HPLC (High Performance Liquid Chromatography) by using a methanol-0.1 percent phosphoric acid solution with the volume ratio of (51-54):(49-46) as a mobile phase and 275nm as a detecting wavelength. The method has the advantages of simplicity, convenience, high speed, complete enzymolysis of components to be detected, and favorable wave crest separation. The self enzymolysis approach method of baicalein and wogonin in scutellaria baicalensis is reported for the first time and provides real basic content data for the full extraction and separation of the components. A content practical measured value of the baicalein is larger than a theoretical value calculated by molecular weights of baicalin and baicalein.

The invention relates to a preparation method of mercaptoacetic acid-2-ethylhexyl ester in molten salt hydrate, and belongs to the technical field of organic synthesis. Including the distillation and concentration step of thioglycolic acid acidified solution; adding CaCl 2 The steps of obtaining a distillation concentrate containing molten salt hydrate; the esterification reaction step of using the molten salt hydrate as the reaction medium; the steps of sedimentation and layering to obtain thioglycolic acid-2-ethylhexyl ester. The invention integrates the separation of thioglycolic acid, the treatment of tail-extraction wastewater, and the esterification reaction, greatly simplifies the production process, can effectively separate water and solid salt, and the content of organic matter in water and solid salt is low, and the separated water It can be reused, and the solid salt can also be used as a by-product. The invention greatly reduces the side reaction in the production process of thioglycolic acid-2-ethylhexyl, improves the yield and reduces the production cost.

In the existing method, acetic anhydride is used for reaction when synthesizing formula III from formula IV, the reaction temperature is high, the time is long, and a large number of isomer by-products are produced in the reaction process, resulting in low product purity. When synthesizing the compound of formula I from the free base of the compound of formula II, the halogenated alkane is used as a solvent, and thionyl chloride is used as a chlorinated reagent to carry out the reaction, and the post-treatment needs to be quenched with a base, washed with water, extracted, concentrated, and then formed into a salt. The operation is complicated. Long production cycle. The invention discloses adding p-toluenesulfonic acid for catalysis when preparing the compound of formula III, so that the reaction can be carried out at a lower temperature, the side reaction is greatly reduced, and the purity of the product is improved. When preparing the compound of formula I, ethyl acetate is used as a solvent. As the reaction proceeds, the product will gradually separate out. After the reaction is complete, the product can be obtained by direct filtration. The post-processing is simple and the product purity is high, which is suitable for industrial production.

The invention relates to the field of wire head insulation treatment technology, and discloses a lithium battery lead wire exposed wire end insulation production process, comprising the following steps: performing a heating and melting operation on a low-viscosity hot-melt adhesive to obtain a low-viscosity hot-melt adhesive liquid; Dip into the low-viscosity hot-melt adhesive liquid, and carry out encapsulation operation; pull out the exposed wire end from the low-viscosity hot-melt adhesive liquid, and make the exposed thread end hang on the low-viscosity hot-melt adhesive Above the liquid level of the glue, seal the broken wire to form a seal sleeve on the exposed thread end. The invention uses low-viscosity hot-melt adhesive to form a sealing rubber sleeve on the exposed wire end, the insulation operation is simple and convenient, it is not easy to produce residual glue, and the exposed wire end has good sealing and covering performance, which solves the short circuit problem of the exposed wire end of the wire and solves the problem of the exposed wire end Oxidation due to moisture, so that the tin-eating effect of exposed wire ends is good. The cost of low-viscosity hot melt adhesive is far lower than the cost of insulating tape and sleeve, which can increase the production efficiency by more than 300%.

The invention relates to a poly(vinylidene fluoride-hexafluoropropylene)-based lithium ion battery diaphragm and a preparation method thereof. The diaphragm adopts the phase inversion method, dissolving a certain proportion of poly(vinylidene fluoride-hexafluoropropylene), modified polymers and nano fillers in an organic solvent, stirring and mixing at a certain temperature, adding a non-solvent, and continuing Stir until uniform dispersion, and then undergo steps such as defoaming, coating, and drying to obtain the poly(vinylidene fluoride-hexafluoropropylene)-based lithium battery separator of the present invention. The poly(vinylidene fluoride-hexafluoropropylene)-based lithium-ion battery diaphragm of the invention has uniform and easy-to-control thickness, uniform micropore structure, high mechanical strength, and is easy to realize industrialization.

The invention relates to a preparation method of a chamomile chewable tablet, which is characterized in that the preparation method comprises the following steps of (1) soaking, drying chamomile, removing a sweet and bitter taste of the chamomile, (2) respectively crushing and sieving dextrin, microcrystalline cellulose, dry starch, a filling agent and cane sugar, and then mixing uniformly, (3) adding water according to a proportion of 1g water to 7-8g auxiliary material mixture, preparing a soft material, (4) allowing the prepared soft material to pass through a 40-mesh sieve, drying till the moisture content is 2-5%, allowing obtained dry particles to pass through the 40-mesh sieve again, and (5) uniformly mixing a vitamin C, chamomile petals treated in Step (1) and the dry particles obtained from Step (4), spraying magnesium stearate on a mold, tableting at 240-340N, and conducting vacuum packaging. The chamomile chewable tablet is simple in technology, convenient to eat, sweet and sour in taste, complete in appearance, bright and clean in surface, moderate in hardness, easy to preserve and chewy, preserves nutritional ingredients of the chamomile and has a milk flavor and no rough sense when people have a taste; and the surface of the chamomile chewable tablet has natural flower patterns formed after the chamomile petals are squeezed.