1610results about How to "Mild process conditions" patented technology

This invention relates to a process for removing polarizable impurities from hydrocarbons and mixtures of hydrocarbons using ionic liquids as an extraction medium. By way of extraction, the degree of contamination of the hydrocarbon or mixture of hydrocarbons is reduced to a low or very low level. The specific ionic liquids are compounds of the Formula 1, which are organic salts that are liquid or can be melted to form a liquid and that can form at least a biphasic mixture with a hydrocarbon. The process is suitable for purifying a wide range of hydrocarbons under a wide range of process conditions.

The invention discloses a polydopamine-based biofunction modification method. The method comprises the following steps of: soaking clean inorganic / metal materials in dopamine alkaline aqueous solution with a pH value of 7.2 to 10, introducing oxygen to fully oxidize the clean inorganic / metal materials to obtain a monolayer polydopamine modification layer, drying, placing the material in the air atmosphere at 50 to 200 DEG C, performing thermal oxidation to obtain a multi-layer firmly-combined high-reactivity polydopamine layer, and soaking the treated material into the amino-containing and sulfydryl-containing biofunctional molecular solution to obtain a firmly combined biofunction simulate modification layer on the surface of the materials. The polydopamine modification layer obtained bythe method has excellent anti-deformation performance, stability and reactivity, can directly react with amino or the sulfydryl in the biomolecule to immobilize the bioactive molecule on the surface by covalent bonds; moreover, the process is simple, the condition is mild, and the method is easy to implement.

The invention discloses a nanostructured quasi-solid electrolyte applied to lithium ion batteries or lithium sulfur batteries and a preparation method and application thereof. The nanostructured quasi-solid electrolyte is a macro solid-state electrolyte material which is formed by an inorganic-organic hybrid framework material adsorbing ion conductive agent. The preparation method of the nanostructured quasi-solid electrolyte is as follows: in protective atmosphere, the inorganic-organic hybrid framework material is soaked in the ion conductive agent and sufficiently mixed, and redundant solvent is then volatilized. The prepared nanostructured quasi-solid electrolyte with high lithium ion conductivity can be substituted for both organic electrolyte and diaphragms in conventional lithium ion batteries, and thereby safety problems caused by the leakage of the organic electrolyte can be effectively prevented; a lithium battery assembled from the electrolyte can use a metal lithium plate as a cathode.

The invention relates to a synthesis method of drilling fluid filtrate reducer. The method comprises: a, nonionic compound emulsifying agent is dissolved in oil and oil phase is made up; a first monomer chosen from fumaric acid, maleic acid, itaconic acid or crylic acid, a second monomer chosen from N, N- dimethylacrylamide, N, N-diethylacrylamide or acrylamide and a third monomer chosen from 4-vinylbenzenesulfonic acid sodium salt, sodium allylsulfonate, 3-allyloxy-2-dydroxy-1-sodium allylsulfonate, 2- methacryloxypropyl-2-methyl propanesulfonic acid, 2-acrylamido-2-methyl propanesulfonic acid or SMAS are dissolved in water with the molar ratio of 1:1 to 5:1 to 5, the pH value of the solution is adjusted to be between 8 and 11, evocating agent is added and water phase solution is made up; and b, the water solution is added to the oil phase solution and the temperature rises to 40 to 70 DEG C for polymerization. The method of the invention has the advantages of fast polymerization speed, high outcome molecular weight and high outcome stability, good filtrate reducing performance, high temperature resistance and high salt resistant performance.

The invention discloses a preparation method of 1,3-dioleoyl-2-palmitoyl triglyceride, which comprises the following steps: carrying out esterification reaction on glycerol and palmitinic acid under the action of a catalyst to obtain tripalmitin; carrying out ester exchange reaction on the tripalmitin and oleic acid or oleate under the action of 1,3-specific lipase until the ester exchange rate reaches 30-60%, and removing free fatty acids or fatty acid esters in the reaction system; and adding oleic acid or oleate into the reaction system, continuing the reaction until the ester exchange rate reaches 60-90%, and separating and purifying the 1,3-dioleoyl-2-palmitoyl triglyceride from the reaction products. The method disclosed by the invention has the advantages of wide raw material sources, high economy, high safety, mild technological conditions, short reaction time, low energy consumption and low enzyme consumption; and the method can be used for preparing high-yield high-purity 1,3-dioleoyl-2-palmitoyl triglyceride, and can be used as a food nutrient reinforcer for blending infant formula milk powder.

The invention relates to a method for preparing graphene, characterized by carrying out explosion treatment for one or more times on carbonaceous materials by using fluids under supercritical state. By using the fluids under supercritical state to penetrate and dissolve the carbonaceous materials and having the aid of sudden release of high pressure hot steam, the shearing and peeling between layers of the carbonaceous materials are promoted to realize the preparation of graphene. Compared with using ball milling, mechanical peeling, high temperature and high pressure to prepare graphene in the prior art, the invention has the advantages of mild process conditions (low pressure), short process time, large area of prepared graphene, and complete preserved crystal structure. According to the invention, the content of graphene which comprises less than 5 layers is higher than 90 %, and the batch production of graphene powder products can be really realized.

The invention discloses a flexible slow-release micro-needle patch and a preparation method thereof. The micro needle patch comprises a micro-needle, a substrate and a back lining, wherein the micro-needle and the substrate form a micro-needle array; a base material of the micro-needle or a base material of the micro-needle array contains a drug in a crystal form; the solubility of the drug in the crystal form in water is less than 100 microgram / ml. The micro-needle patch has the characteristics of simple process, high preparation safety, low process cost and high drug loading capacity.

The invention discloses an adsorbent for removing heavy metal from water and a preparation method of the adsorbent, and belongs to the fields of water treatment technologies and application. The adsorbent for removing the heavy metal from the water comprises the following raw materials of a high polymer material, a metal oxide and a pore-forming agent. The prepared adsorbent has high heavy metal adsorption capacity and high adsorption speed and thoroughly removes the heavy metal from the water at high removal efficiency of over 95 percent.

The invention provides an integral recycling method of a lithium iron phosphate positive electrode material. The integral recycling method comprises the steps of (1) preparing paste from the lithium iron phosphate positive electrode material, mixing the paste and an acid for leaching reaction, and performing liquid-solid separation to obtain a leaching liquid and residue; (2) adjusting a pH valueof the leaching liquid to 1.5-3, and performing solid-liquid separation to obtain iron phosphate and a deironing acid liquid; (3) adjusting a pH value of the deironing acid liquid to 5-8, and performing solid-liquid separation to obtain a precipitant of aluminum and iron and a lithium-containing purification liquid; and (4) and performing post-treatment on the purification liquid to obtain a lithium product and a precipitation mother liquid. By the method, the recycling rates of lithium, iron and phosphate all are larger than 95wt%, the purity of the obtained lithium carbonate product is larger than 98.5wt%, the impurity content conforms to the requirement of GB / T11075-2013, the iron phosphate product conforms to the quality requirement (HG / T 4701-2014) of battery-level iron phosphate, theresidue discharging quantity is reduced by 85wt%, the flow is simple, and the process is clean.

The invention discloses a preparation method for a chlorella anti-oxidative peptide. The preparation method is as follows: by taking chlorella as material, carrying out wall-breaking treatment on the chlorella to obtain soluble protein by utilizing a dilute alkali swelling-combined ultrasonic-wave process; and hydrolyzing the chlorella protein by a biological enzyme method to obtain the chlorella anti-oxidative peptide with remarkable anti-oxidative effect. The invention further discloses a treatment process combining ultralow temperature treatment, high pressure treatment with dilute alkali swelling and ultrasonic waves, which can improve yield of the water-soluble protein and can further improve anti-oxidative ability of hydrolysate. A product obtained by virtue of the preparation method disclosed by the invention is high in purity and strong in anti-oxidative activity.

The invention belongs to the field of vegetable oil processing, and particularly relates to a process for preparing cold-pressed camellia oleosa seed oil by virtue of vacuum microwave enzyme method pretreatment. The process comprises the following procedures: (1) picking fruits; (2) removing husks; (3) crushing; (4) adding enzymes; (5) carrying out staged vacuum microwave treatment; (6) carrying out physical cold pressing; (7) drying; (8) filtering. The process disclosed by the invention can be used for pretreating the camellia oleosa seeds by adopting a staged vacuum microwave enzyme method, is moderate in process condition and can be used for greatly enhancing the oil yield of subsequent cold pressing; the prepared camellia oleosa seed oil has good quality and can be used for better preserving the original nutrition and flavor of the camellia oleosa seed oil.

The invention discloses a synthesis process of chiral pyrrolidine and intermediates. The synthesis process adopts 2, 5-difluorohalobenze or 5-fluoro-3 halogenated pyridine as the raw material substrate, and employs a chiral catalyst to induce chiral reaction so as to reduce a ketone compound into a corresponding chiral alcohol compound, and then carries out substitution reaction to introduce an easily leavable group to an alcoholic hydroxyl group so as to facilitate ring formation reaction (or carry out ring formation reaction directly). The process provided by the invention has the advantagesof significant increase of product yield and reduction of cost, also the reaction temperature is mild, and the process is easy to control and industrialize.

The invention relates to a preparation method for a phenyl vinyl MQ silicone resin. The phenyl vinyl MQ silicone resin is prepared by the steps of co-hydrolysizing a mixture of silicate ester, phenyl alkoxy silane, vinyl alkoxy silane and methyl alkoxy silane with hydrochloric acid, extracting, drying an organic layer in a neutral condition and removing low-boiling-point substances. The method is mild in reaction condition, cheap and easily available in raw materials and simple in process. The phenyl vinyl silicone resin can be used as an LED packaging material, and also can be used as other reinforcing fillers, additives of personal care products, defoaming agents, brightening agents, other auxiliaries, etc.

According to the invention, a first defining layer of a pixel defining layer comprises dam bodies locally covering a substrate; second defining layers are arranged at the tops of the dam bodies; and the second defining layers are made of a lyophobic material. A manufacturing method of the pixel defining layer disclosed by the invention comprises the steps of: preparing the first defining layer on the substrate; preparing one layer of lyophobic material on the substrate and the first defining layer; and by the etching process, removing the lyophobic material between the dam bodies to obtain the second defining layers covering the dam bodies of the first defining layer. According to the pixel defining layer disclosed by the invention, hydrophobic layers are arranged at the tops of the dam bodies, and a material of the substrate has the lyophilic property, so that the requirements for top lyophobicity and bottom lyophilic property of the pixel defining layer are met; and the manufacturing method of the pixel defining layer disclosed by the invention is simple, low in manufacturing cost and very simple and convenient in process flow.

The invention discloses a method for extracting succinic acid from a broth. The method comprises the following steps: a sodium succinate broth generated from microbial fermentation goes through a microfiltration membrane to conduct cross-flow filtration so as to remove thallus and other relatively large impurity particles; cross-flow filtration is carried out through a nanofiltration membrane to remove residual protein and pigment in the broth so as to get a clean filtrate; after the electrolysis, electrodialysis and electrolysis of the clean filtrate through a bipolar membrane, a succinic acid solution and a sodium hydroxide solution are obtained respectively; and the succinic acid solution is decompress-vaporized, cooled and crystallized, and therefore white succinic acid crystals are obtained. All working procedures in the method are closely connected, feed liquid always recycles under sealed condition, conditions through the whole technique process are mild, no organic solvent and any other organic compounds are added, the technique flow is short, steps are simple, the requirements on equipment are not high, the final product has high purity and the content of succinic acid is more than 99.0 percent through test.

The invention discloses a method and a system for denitrifying low-carbon high-nitrogen sewage by utilizing a plant carbon source-enhanced artificial wetland. The method comprises the following steps: hydrolyzing by taking waste crops or wetland plant straws as carbon sources, and charging hydrolysate into an artificial wetland so as to improve the denitrification efficiency of the low-carbon high-nitrogen sewage. The invention simultaneously provides a treatment system, which is simple in structure, and scientific and reasonable in carbon source charging mode, and the denitrification effect of the low-carbon high-nitrogen sewage can be well realized by enhancing the artificial wetland through utilizing the plant carbon source. According to the method, the adopted plant carbon sources are cheap and easily available, the carbon release capability is strong, the bio-denitrification effect is good, and the hydrolysate is simple and practical to prepare, the carbon source charging mode is strong in continuous running capability, and the method is simple to maintain, less in secondary pollution, low in production cost, and capable of solving the technical difficulty of treating tail water in a sewage treatment plant with low carbon nitrogen ratio through artificial wetland by utilizing a simple method.

The invention relates to a method for removing sulfur in petroleum coke and a desulfurizer thereof. The method adopts two types of mixed acid with a fixed ratio controlled as the desulfurizer, and comprises the following steps: placing fine petroleum coke with a high S content (the S content being 3-7 percent) in the mixed acid under the atmospheric pressure and the temperature of 0-60 DEG C, soaking the petroleum coke for reaction for a certain time, separating the petroleum coke and the soaking solution, washing and drying. The desulfurization percent of the obtained petroleum coke is 45-60 percent, the microstructure of the petroleum coke is not changed obviously, and the separated soaking solution of mixed acid can be repeatedly used when being mixed with the newly prepared liquid. The method has the advantages of low desulfurization cost, simple operation and significant desulfurization effect.

The invention discloses a carbon dot / carbon nitride / titanium dioxide composite material which is formed by compounding of three-phase carbon dots, graphene-like carbon nitride and titanium dioxide, wherein carbon nitride has a large surface area so as to just provide a depositing space for titanium dioxide nanosheets, so that titanium dioxide cannot cluster; and meanwhile, carbon nitride has relatively narrow energy gap and can increase the light response range. Furthermore, compounding of photo-induced electrons can be further inhibited by utilizing the unique electron transfer capacity of carbon dots, so as to increase the photocatalytic capacity. Moreover, the preparation method is mild in process conditions and low in cost, and the composite material is suitable for large-scale production, and has wide application prospect.

The invention discloses an enzymatic extraction method for auricularia auricula polysaccharides, which comprises the following steps of: mechanically and coarsely grinding dried auricularia auricula, sieving, mixing according to a material-to-water ratio of 1:(50-200), and extracting at the temperature of between 35 and 50 DEG C and the pH of between 5.0 and 9.0 under the action of chitinase for 60 to 180 minutes, wherein the addition amount of the chitinase is 100 to 600U / g; raising the extraction temperature to be between 80 and 95 DEG C, extracting for 60 to 180 minutes to obtain extract, and centrifuging to obtain supernatant and precipitates; and adding ethanol into the supernatant to precipitate polysaccharides, performing centrifugal separation to obtain precipitates, dissolving the precipitates in water, concentrating to remove residual ethanol, adding a mixture of diatomite and activated carbon into concentrated solution, mixing, fully stirring, filtering, performing membrane filtration on filtrate by using a polysulfone membrane of 30 to 100kD, collecting macromolecular concentrated solution which does not filter through the membrane, and drying the macromolecular concentrated solution to obtain the auricularia auricula polysaccharides. The prepared products have high purity and bioactivity; and the polysaccharide content is over 40 percent.

The invention relates to a comprehensive treatment method for mother liquid synthesized by oxidizing glyphosate by N-(Phosphonomethyl) iminodiacetic acid with an IDA (Iminodiacetic Acid) method. The mother liquid is treated by a condensed system to obtain condensed liquid and thin liquid, wherein the condensed liquid subjected to formaldehyde removal is used for preparing a gyphosate solution with high content or carrying out oxidation treatment, the treated thin liquid can be used for gyphosate production or biochemical treatment. The comprehensive treatment method not only recovers gyphosate, but also reduces the pollution to the environment.

The invention provides a preparation method of a graphene aerogel. The preparation method comprises the following steps that S1, graphene and amido polymers are added into solvents and dispersed, so that graphene dispersion liquid is obtained; and S2, the graphene dispersion liquid is frozen and dried, so that the graphene aerogel is obtained. According to the preparation method of the graphene aerogel, the polymers containing amido serve as graphene dispersing agents and structural cross-linking agents, firstly strong interaction between the amido in the polymers and the graphene is utilized for dispersing graphene sheet layers in the solvents, and then the graphene dispersion liquid is directly frozen and dried, wherein the amido in the polymers is dried and cross-linked with the graphene sheet layers to form a structural framework, and accordingly the elastic graphene aerogel of a porous structure is prepared. According to the preparation method of the graphene aerogel, the graphene aerogel is directly prepared from graphene powder, process conditions are mild, the steps are simple, large-size graphene aerogel blocks can be produced in a large scale, and the obtained aerogel is good in adsorption characteristic and pressure resistance.

The invention provides an instant okra snack food which is prepared from okra bud as a main raw material together with corn starch, egg white, an antioxidant, salt, citric acid and wheat bran, and the preparation method comprises the following steps: collecting the bud, deactivating, soaking in vacuum, drying in vacuum, mixing size, hanging the size, wrapping powder, quickly freezing, frying in oil in vacuum, removing the oil and packaging. The product is gentle in machining process, the original appearance, nutrition and favor of okra are maintained, the prepared product is rich in nutrient elements such as dietary fiber, multivitamins and mineral substances, and active substances such as polysaccharide and flavone, and the snake food is nutrient, health care and convenient to eat.

The invention relates to a method for synthesizing biodiesel based on multi-sulfoacid functional ion liquid. The method is characterized by synthesizing the biodiesel through esterification reaction by using fatty acid and alcohol as standard reactants and selecting the multi-sulfoacid functional ion liquid as a catalyst. The method has the advantages of low corrosivity, high catalyst activity, clean reaction process and simple and convenient post-treatment; and the catalyst has the characteristics of high-density reactive site of liquid acid, non-volatility of solid acid and easy separation property and reusability, and waste oils contain a large amount of fatty acid, so the method of the invention can be taken as an important method for industrial use of the waste oils.

The invention provides graphene, graphene hydrosol, and graphene powder obtained by drying the graphene hydrosol, wherein the edge of the graphene comprises active groups, and the active groups comprise amino groups. The preparation method of the graphene hydrosol comprises the following steps: (1), performing electrochemical intercalation and exfoliation on graphene to obtain graphene dispersed in electrolyte; the electrolyte after electrochemical intercalation and exfoliation contains both inorganic salt and amino acid; after intercalation, removing free inorganic salt and amino acid compounds from the solution to obtain the graphene hydrosol. According to the graphene, graphene colloidal sol, graphene powder and the preparation method and the preparation device, provided by the invention, the graphene hydrosol is provided, the use of a great deal of an organic solvent in the graphene hydrosol based on the organic solvent is reduced, the stability is good, the preparation method is simple, the operation is easy, the equipment and material requirements are low, the environmental friendliness is achieved, and the industrialization is facilitated.

The invention provides a biochemical joint preparation method and application of absolute rose oil. The preparation method comprises the steps that coarse rose powder is prefermented by beta-glucosidase, amylase and cellulase to generate aroma, reflux extraction is conducted for 3-5 h with an aqueous solution the pH value is regulated to be 9-14, a Maillard reaction is conducted for 3-5 h, suction filtration is conducted, filtrate is retained, an ethanol solution is added into filter residues for secondary reflux extraction, suction filtration is conducted, filtrate is retained, the filtrates obtained in two times of suction filtration are mixed, concentration and alcohol precipitation are sequentially conducted, and a rose extract is obtained; the rose extract is purified through molecular distillation, light components are retained, heavy components are purified through molecular distillation again, the light components are mixed, and the purified absolute rose oil is obtained. The absolute rose oil has purer and richer aroma and fewer impurities, and the irritation is reduced. When the absolute rose oil is applied to reconstituted tobaccos, the color and luster of the reconstituted tobaccos is more natural and uniform, the aroma can be enriched, irritation and offensive odor can be reduced, and the sensory quality can be improved; when the absolute rose oil is applied to a novel tobacco product atomizing agent, the aroma is enriched, the noble rose note is improved, and the tobacco aroma is increased.

A dithioamino acid triazine derivative as the additive of antioxidizing extreme-pressure lubricating oil is prepared by the reaction of dialkyl bithioaminoformate and tripolychlorocyanogen. Its advnatages include gentle reaction condition and high antioxidizing performance.

The invention discloses a method for preparing arsenic by direct reduction and roasting of an arsenic-containing material. The method comprises the following steps: taking arsenate as a raw material, uniformly mixing the arsenate material with a carbonaceous reducing agent to obtain a mixture, putting the mixture into an inert or reducing atmosphere, carrying out reduction and roasting under a negative pressure condition, and collecting roasting flue gas to obtain an arsenic product. According to the method, the arsenic-containing material which is commonly used in a metallurgical process and takes the arsenate as a main component is reduced into chemically stable elementary arsenic; the elementary arsenic is nontoxic, can be used as a raw material in the semiconductor and alloy industries, and has a certain market value; weight reduction, harmlessness and recycling of the toxic arsenic-containing material are realized in the reduction process and are the most reasonable development direction of arsenic; and therefore, the method has a large popularization value.

The invention discloses a preparation method of 2-chloro-5-tirfluoromethylpyridine. The invention provides a preparation method of 2-chloro-5-tirfluoromethylpyridine, and the preparation method comprises the following steps of: reacting 2-chloro-5-trichloromethylpyridine with hydrogen fluoride in a closed system in the presence of a catalyst to obtain the 2-chloro-5-tirfluoromethylpyridine, wherein the catalyst is antimony trioxide and / or antimony pentoxide. The invention further provides a preparation method of a compound 2, and the preparation method comprises the following steps of: reacting a compound 3 with ammonia in the presence of alkali to obtain the compound 2. The preparation method provided by the invention is cheap and liable to obtain raw materials, low in cost, few in reaction by-products, simple in post treatment, safe to operate, environment-friendly and suitable for large-scale industrial production.

The invention belongs to the technical field of material, and specially relates to a functionalized DOPO flame retardant polylactic acid and a method for preparing the same. The preparation method comprises a step of preparing the functionalized DOPO, a step of mixing the functionalized DOPO, the polylactic acid, a anti-oxidant and a anti-dripping agent, and a step of extruding the mixture and a natural fiber with blending in a twin-screw extruder to get the biodegradable natural fiber reinforced polylactic acid composite material having the functionalized DOPO flame retardant. The composite material has relatively good flame retardation performance, and can maintain or improve mechanical properties of materials with respect to pure polylactic acid. The preparation method is simple and effective, mild in technology condition and suitable for mass production.

The invention discloses a preparation method and application of a non-molybdenum sulfide mineral flotation and separation inhibitor. The preparation method for the flotation and separation inhibitor comprises the step of enabling phosphorus pentasulfide and alkaline compounds to react with water-soluble macromolecules, and thus the flotation and separation inhibitor can be obtained. According to the preparation method for the non-molybdenum sulfide mineral flotation and separation inhibitor, operation is easy, the process conditions are mild, the raw material cost is low, and the industrial production requirements are met; and moreover, the prepared product directly serves as the non-molybdenum sulfide mineral inhibitor applied to flotation and separation of molybdenum sulfide minerals and non-molybdenum sulfide minerals, the molybdenum sulfide minerals and the non-molybdenum sulfide minerals can be effectively separated, the grade of molybdenum concentrates is improved, and the flotation and separation inhibitor is particularly suitable for flotation and separation of molybdenite, copper sulfide ore, galena, pyrite, jamesonite, arsenopyrite, bismuth sulfide ore and the like.