58results about How to "Eliminate the extraction process" patented technology

The invention discloses a river and lake bottom sludge pollutant flux test method and a river and a device based on a diffusion theory. The method comprises the following steps of: A, acquiring a bottom sludge sample; B, putting the bottom sludge into a base of an experimental device, and enabling the sludge surface to be horizontal; C, slowly injecting water to a column port along a column wall; D, injecting running water into the experimental device without the bottom sludge; E, standing for a certain time; F, measuring the pollutant concentration of the taken water sample; G, calculating a degrading coefficient of the pollutant in the water; H, calculating an initial concentration value of the bottom sludge water; and I, calculating a pollutant exchange flux of a water-sludge interface. A base plate is fixed at the bottom of a constant-temperature water tank; a base wall is arranged on the base plate; a lower flange disk is arranged on the upper part of the base wall; an upper flange disk is arranged at one end of a column body; and an upper flange disk fixing bolt flange hole is formed in the upper flange disk. The method is feasible, and is convenient to operate; the experimental device has a rational and simple structure; operations of accommodating deposits, sampling water samples and the like are extremely convenient; and outstanding economic benefit is achieved.

The invention discloses a polymer lithium ion battery and a preparation method of a diaphragm of the polymer lithium ion battery. The preparation method comprises the following steps: dissolving P(VDF-HFP) into an organic solvent, and adding inorganic ultra-fine powder into the mixture by adopting an in-situ hydrolysis method so as to prepare a mixed solution of P(VDF-HFP)-TiO2; coating the mixed solution on a polyolefin diaphragm so that the solvent is volatilized and a composite porous membrane is formed on the diaphragm; then assembling positive and negative pole pieces with the diaphragm; injecting liquid electrolyte into an electric core after assembling; and heating and baking the electric core so that the composite porous membrane and the electrolyte form a gel so as to prepare a gel polymer battery. The method has a simple technological process for preparing the polymer battery, low cost and wide application range of a production process; and the manufactured composite porous membrane has the advantages of high liquid absorption rate, high porosity and stable structure, and the battery has good cycling performance and electric conductivity.

This invention discloses a method for removing sulfur-containing compounds from fuel oil by phase-transfer catalytic oxidation. The method comprises: preparing six types of heteropolyacid quaternary ammonium salts as the phase-transfer catalysts from quaternary ammonium salts and phosphomolybdic acid/tungstophosphoric acid, mixing the phase-transfer catalysts, fuel oil, and peroxyformic acid oxidant (prepared from H2O2 and formic acid at a weight ratio of 3.5:(1-1.5)), reacting at 25-55 deg.C under ultrasonication for 1-2 h, and separating fuel oil and peroxyformic acid to obtain desulfurized fuel oil. The method avoids adsorption and extraction procedures due to the heteropolyacid quaternary ammonium salts phase-transfer catalysts, and has such advantages as simple process, and high reaction rate. The catalyst has such advantages as no toxicity and no pollution, and is recyclable and environmentally friendly.

The invention discloses a method for preparing a gel polymer lithium ion battery, which comprises the following steps: dissolving P(VDF-HFP) into an organic solvent, and adding inorganic ultra-fine powder into the mixture by adopting an in-situ hydrolysis method so as to prepare a mixed solution of P(VDF-HFP)-TiO2; coating the mixed solution on positive and negative pole pieces of the battery so that the solvent is volatilized, and composite porous membranes are formed on the positive and negative pole pieces; assembling the pole pieces containing the composite porous membranes with a diaphragm; injecting liquid electrolyte into an electric core after assembling; and heating and baking the electric core so that the composite porous membranes and the electrolyte form a gel so as to preparea gel polymer battery. The method has a simple technological process for preparing the polymer battery, low cost and wide application range of a production process; and the manufactured composite porous membranes have the advantages of high liquid absorption rate, high porosity and stable structure, and the battery has good cycling performance and electric conductivity.

The invention discloses a method for preparing xylo-oligosaccharide and fermentable sugars through lignocelluloses-type biomass. Firstly, oxidation pretreatment is conducted under the alkaline condition to selectively remove lignin in the lignocelluloses-type biomass; then endo-xylanase which does not have cellulase activity is adopted to conduct hydrolysis pretreatment on a substrate to obtain the xylo-oligosaccharide; and finally, cellulase is adopted to hydrolyze solid residues after the endo-xylanase is hydrolyzed to obtain the fermentable sugars. According to the method, the xylan separation and extraction processes where energy consumption is high, consequently the cost is high, the dosage of chemical reagents is large, and consequently, pollution is serious are omitted, the purity of the xylo-oligosaccharide is further improved, and the yield of the fermentable sugars is increased.

The invention discloses a high-density polyethene micro porous membrane and a preparation method therefor, and belongs to the field of a film material. The method comprises the steps of: mixing raw materials, melting the mixed raw materials to form thick sheets, and then stretching the thick sheets twice: (1) stretching the thick sheets for the first time: preheating the thick sheets at the temperature of 40-130 DEG C, performing longitudinal stretching under the effect of thermal wind at 90-130 DEG C, wherein the stretching multiple rate is 1-10, and then performing heat shaping so as to obtain the films; (2) performing stretching for the second time: performing lateral uniaxial stretching or vertical and lateral bisynchronous stretching on the films prepared in the step (1) under the effect of thermal wind at 70-110 DEG C, maintaining stretching state for 2-4 minutes, wherein the multiple rate of lateral uniaxial stretching is 1-10, and the total multiple rate of vertical and lateral bisynchronous stretching is 4-16; and then, performing heat shaping so as to obtain finished products. According to the preparation method, in the stretching process, under the effect of thermal wind, a hole forming agent is rapidly volatilized from the films so as to form a micropore structure in mutual penetration, so that an extraction technology is omitted, the consumption of an extracting solvent is further reduced, the cost is reduced and the technological process is simplified.

The invention discloses a synthetic method of an osteoporosis treatment drug 1 alpha-hydroxyitamin D3, which comprises the following steps: 1) esterfying; 2) cyclizing; 3) oxidizing; 4) opening ring; and 5) performing photochemical isomerization: dissolving a mixture of 5,6-cis 1 alpha-hydroxyitamin D3 and 5,6-trans 1 alpha-hydroxyitamin D3 in methanol with 20-200 parts by weight, adding a photosensitizer, reacting for 0.5-10 hours under irradiation of ultraviolet light to obtain 5,6-cis 1 alpha-hydroxyitamin D3 which is 1 alpha-hydroxyitamin D3; and performing recrystallization to obtain the 1 alpha-hydroxyitamin D3 acicular crystal. According to the invention, a fat-soluble solvent substitutes pyridine, an organic alkalescence catalyst is used, under the analogous yield condition, the reaction temperature changes to normal temperature from low temperature, the reaction time is short, the energy consumption is low, toxic substance pyridine with mass usage can be avoided, the steps for extracting and cleaning pyridine can be omitted, and the technology economy is enhanced.

The invention discloses a method for preparing refined nickel sulfate from copper-removed solution of copper electrolyte. The method comprises the following steps that the copper-removed solution of the copper electrolyte is subjected to acid-salt separation for separating sulfuric acid and nickel sulfate, primary vulcanization, neutralization impurity removal, calcium and magnesium removal by fluoride, secondary vulcanization, nickel adsorption by an adsorbing material and concentration crystallization to obtain a refined nickel sulfate product. According to the method, the copper-removed solution of the copper electrolyte is directly purified, so that the primary concentration crystallization cost is saved; and the nickel yield is high, the purification process is simple, and a traditional extraction process is omitted, so that the investment cost and the operation cost are greatly reduced.

The invention belongs to the preparation field of copper-based composite materials for welding electrode, and discloses a preparation method of ultra-fine zirconium carbide particle dispersed and strengthened copper-based composite materials for spot-welding electrode. The preparation method comprises the following steps that cold press molding of uniformly mixed Cu-Zr-C powder is carried out, then powder compact is put into a self-propagating high temperature synthesis device to ignite to obtain ultra-fine ZrC powder body containing Cu, and a mixture of oxygen-free copper and the ultra-fine ZrC powder body containing Cu are smelted in a vacuum melting furnace and magnetic stirring is carried out, so that ultra-fine ZrC particle dispersed and strengthened copper-based composite materials are prepared. The preparation method has the characteristics of being low in cost, simple in techniques, high in production efficiency, tiny in ZrC size, uniform in distribution and the like.

The invention provides an SNP (single nucleotide polymorphism) typing detecting method for utilizing a locking-type probe for rolling ring amplification. At first, the locking-type probe and an amplification primer are designed, then the designed locking-type probe is phosphorylated, then a locking-type probe cyclization reaction is carried out, an enzyme digestion reaction is adopted for digesting an uncyclized locking-type probe and genomic DNA to obtain a cyclized locking-type probe, the cyclized locking-type probe is subjected to a rolling ring amplification reaction, a reactant obtained through the rolling ring amplification reaction is taken and subjected to 1% agarose gel electrophoresis detection, and the gene type of SNP can be judged through an electrophoresis detecting result. According to the method, SNP typing detection can be directly carried out on biological samples like peripheral blood, the genomic extraction process is omitted, the operation steps are greatly reduced, detecting time is greatly shortened, cost is saved, the risk of cross infection of operators is reduced, the detecting method has great popularization prospects, and the detecting result is accurate and sensitive.

The invention relates to a molecule detection method for cowpea severe mosaic virus, which belongs to the technical field of biology. The method comprises the following steps of: obtaining coarse virus extract; preparing an immune capturing PCR tube; releasing cowpea severe mosaic virus RNA in the immune capturing PCR tube and taking the cowpea severe mosaic virus RNA as a template, and performing reverse transcription reaction by using CPSMVR of a sequence 5'-GGCTTCTGCAGGTGTTCCAA-3' as a primer to obtain a reverse transcription product; and performing real-time fluorescent PCR reaction by using the reverse transcription product as a template and using a forward primer 5'-GGTCAATCCCGGCATTATTG-3', a reverse primer CPSMVR and a Taq Man probe CPSMVPro 5'FAM-TGTAGCACAATCAGGGCAAACACAGCA-TAMRA 3', wherein when the initial cycle number is less than or equal to 35, a sample is infected with the cowpea severe mosaic virus.

The invention relates to a method for controlling surface micro cracks of pitch-based spherical activated carbon. The method comprises the following steps: carrying out modification with high softening point coal tar pitch, improving pelletizing conditions of naphthalene-containing pitch granules, and changing a removal method for naphthalene in the naphthalene-containing pitch granules, thereby obtaining the pitch-based spherical activated carbon which is smooth in surface, free of surface micro crack and high in sphericity degree, wherein the pitch-based spherical activated carbon has a density of 0.5-0.85g/cm<3>, a specific surface area of 800-1300m<2>/g, vibration strength greater than 95% and a micro pore content greater than 83%. By adopting the method, while the pitch-based spherical activated carbon is prepared, the problem of micro cracks on the surface of the pitch-based spherical activated carbon can be effectively solved, the mechanical properties of the material are improved, and the method has great significances for promoting engineering progress of the material and widening the application range of the material.

The invention discloses an artificial grass yarn wrapping machine. The wrapping machine comprises a rack, a dividing hook, a lower yarn guide wheel, a spindle with a center hole, a threading mechanismand an upper yarn guide wheel, and the dividing hook, the lower yarn guide wheel, the spindle with the center hole, the threading mechanism and the upper yarn guide wheel are installed on the rack; the dividing hook is used for dividing fiber spun by a spinning machine into multiple center yarns; the spindle is rotatably installed on the rack, and a coated yarn winding drum is arranged on the spindle; the threading mechanism is provided with a threading hole; each bunch of the center yarn passes through the lower yarn guide wheel, the center hole of the spindle and the threading hole of the threading mechanism in sequence, coated yarn penetrates through the threading hole, the center yarn is wrapped at the threading hole, and artificial grass yarn formed after wrapping passes through theyarn guide wheel and then is output. By means of the artificial grass yarn wrapping machine, the fiber spun by the spinning machine can be directly used as the center yarn for wrapping, the fiber coiling and extraction processes are omitted, the occupied space is effectively reduced, and the production efficiency is improved.

The invention relates to a preparation method of methimazole. The method specifically comprises the following step: enabling reaction of N-methylimidazole, N-butyllithium and powdered sulfur in an organic solvent to obtain methimazole. The preparation method disclosed by the invention is simple in process, mild in condition, simple to operate, easy for post treatment, applicable for industrialized production, and capable of greatly improving the reaction yield of methimazole.

The invention provides a preparation method of a blonanserin intermediate. The preparation method comprises the following steps: reacting 4-(4-fluorophenyl)-3-5,6,7,8,9,10-hexahydro cyclooctane pyridine-2(1H)-ketone with a chloro agent under a certain condition, pouring a reactant after the reaction into ice water, adjusting the pH value by using ammonia water, and performing stirring, filtration or centrifugation to obtain a crude product of 2-chloro-4-(4-fluorophenyl)-5,6,7,8,9,10-hexahydro cyclooctane [b] pyridine (compound I); and dissolving, decoloring and recrystallizing the compound I by using hot ethanol to obtain a refined product of the compound I. Compared with the prior art, the method avoids multiple times of extraction during refining, reduces solvent loss in a middle process, is simple and easy to operate, improves the purity and yield of the product, and is suitable for process scaling and industrial production.

The invention discloses a melt spinning preparation method of a high molecular weight polyethylene fiber. The preparation method comprises the following steps: purifying and modifying kaoline, grinding the purified and modified kaoline to 200 meshes, performing ion exchange on the micron-sized kaoline through a cationic monomer, namely methacryloyloxyethyl trimethyl ammonium chloride to form organic kaoline, blending with initiators, namely dibenzoyl peroxide and high molecular weight polyethylene, performing granulation in an auxiliary granulation machinery to form a modified high molecular weight polyethylene grain, performing melt extrusion on the modified high molecular weight polyethylene grain in a screw extruder to form a nascent fiber, performing hot stretching on the nascent fiberafter cooling and drying, and performing thermoforming, curling and false twisting after the stretching to form the high molecular weight polyethylene fiber. The method has the technical advantages that a melt flowing property is significantly improved, a production rate is significantly increased, and the recovery cost is lowered.

The invention discloses an extraction process of purple sweet potato pigment. The extraction process is characterized by comprising the following steps: (1) preparing purple sweet potato pulp; (2) carrying out enzymolysis; (3) carrying out hydrolysis; (4) carrying out filtration treatment; and (5) carrying out ammonification. According to the extraction process, the purple sweet potato is used as a raw material, so that the extraction process of starch is saved and the technological process is simplified; and moreover, the purple sweet potato contains natural pigment and is acid-resistant, salt-tolerant and good in stability. By using the technologies such as enzymolysis and ultrafiltration, the produced pigment is high in color index and good in stability. And the extraction process has the effects of shortening the production period and saving the cost, and belongs to green chemical processes and technologies.

The invention discloses a method of preparing a gel polymer lithium ion battery, comprising the following steps: solving P(VDF-HFP) in organic solvent, and then adding P(VDF-HFP) nonsolvent to obtain mixed P(VDF-HFP) solution; spreading the mixed P(VDF-HFP) solution on the diaphragm or the positive electrode plate and the negative electrode plate of the lithium ion battery to volatilize the solvent of the mixed P(VDF-HFP) solution and form a composite porous film on the diaphragm or the positive electrode plate and the negative electrode plate of the lithium ion battery; assembling the positive electrode plate and the negative electrode plate with the diaphragm of the lithium ion battery, and injecting liquid electrolyte in to as assembled electrical core; and heating and baking the electrical core to make the composite porous film and the liquid electrolyte form gel to obtain the gel polymer lithium ion battery. The method of preparing the gel polymer lithium ion battery has simple process, low cost and wide application range and ensures that the produced composite porous film has high liquid absorption rate and stable structure and the gel polymer lithium ion battery has good cycling performance and conducting performance.

The invention relates to a process for extracting erythricine from a gentianaceae plant acting as a gentian source, which comprises the following steps: making rhizome powder of raw gentian medicinal materials into coarse powder, carrying out reflux extraction in the environment of alkaline water bath of 60-100 DEG C for 2-4 hours with a hydrophilic organic solvent of which the amount is 2-20 times more than that of the coarse powder, carrying out vacuum filtration while hot, recovering the filtrate while depressurizing, processing the obtained solvent and reusing the processed solvent, and drying the extract while depressurizing to obtain a crude erythricine product 3; dissolving the crude erythricine product in a hydrophilic solvent, extracting with a lipophilic organic solvent according to a ratio of 2-4:1, recovering the hydrophilic organic solvent layer while depressurizing, and drying to obtain a crude erythricine product 2; and dissolving the crude erythricine product 2 in an acidic water solution, filtering to obtain a solution, enriching the solution with a resin column, and carrying out chromatography with a chromatographic column to obtain a refined erythricine product. The invention has the characteristics of simple process, low cost, low pollution, high product yield and purity and the like.

The invention provides a sampler for brominated flame retardants in indoor air and a sampling and measuring method thereof, and relates to the technical field of analysis and detection. The sampler provided by the invention comprises a plurality of small solid-phase extraction columns connected in parallel, a flow meter connected with the outlets of the small solid-phase extraction columns, and adiaphragm vacuum pump connected with the outlet of the flow meter. The small solid-phase extraction columns are filled with filler, the filler comprises upper-layer CNWBOND HC-C18 filler and lower-layer CNWBOND NH2 filler, and the filler is separated by glass fiber sieve plates. According to the sampler disclosed by the invention, traditional and novel brominated flame retardants in air are directly enriched by the solid-phase extraction columns, the eluent can be directly subjected to nitrogen blowing concentration and then subjected to sample injection detection, the steps of solvent extraction and purification in a traditional sampling mode are omitted while the sampling requirements of different types of indoor environments are met, solvent consumption is remarkably reduced, the sampling process is simplified, and interference of uncertain factors on sampling measurement results is reduced.