33results about How to "No extraction" patented technology

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 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 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.

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 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.