34results about How to "Meet raw material demand" patented technology

The invention relates to a method for synthesizing low acid-value fatty acid methyl ester by esterification reaction and aims at providing the method with the characteristics that a process is simple; a catalyst and a product are easy to separate and can be recycled; the reaction conversion rate is high; and the obtained fatty acid methyl ester has low acid value. The method for preparing the lowacid-value fatty acid methyl ester sequentially comprises the following steps of: 1, feeding fatty acid and a resin catalyst together or feeding the fatty acid and a solid acid catalyst together, andthen heating the mixture with stirring; 2, after a temperature of a reaction system is raised to 50 to 80 DEG C, dropwise adding methanol into the reaction system, distilling the methanol and water generated in the reaction process, sampling and monitoring the reaction conversion rate in the reaction process and finishing the reaction until the acid value reaches below 0.5mgKOH/g, wherein the pressure of the reaction system is in the range of 10 to 101Kpa and the reaction time is in the range of 4 to 6 hours; and 3, after finishing the reaction, filtering out the catalyst, carrying out reduced pressure distillation on filtrate to separate out excessive methanol and water to obtain a finished product and directly recycling the resin catalyst or the solid acid catalyst.

The invention discloses a method for preparing a calcium silicate board from low-grade limestone. The method comprises steps as follows: 1) crushing and homogenization of low-grade limestone; 2) calcination; 3) digestion: the calcined low-grade limestone in Step 2) is digested and transferred into a storage tank; 4) preparation of mixed slurry: a siliceous material, paper fibers and alkali-resistant short glass fibers are added to slurry in the storage tank in Step 3), and mixed slurry is prepared; 5) blank formation: a blank is prepared from the mixed slurry obtained in Step 4) and trimmed; 6) autoclaved curing: the trimmed blank in Step 5) is transferred into an autoclave for autoclaved curing, pressure relief, cooling, drying, edging and sanding are performed, and the calcium silicate board is prepared. The low-grade limestone can be matched and utilized again, the requirement for raw materials in production of the calcium silicate board is met, the production cost is reduced, the green industry is formed, and energy is saved.

A continuous production method for highly isotactic poly(1-butene) is provided in embodiments of the invention and belongs to the field of polymers. Continuous stable production of the highly isotactic poly(1-butene) is achieved, continuous stability of product quality can be ensured and the molecular weight distribution of products is controlled. The method includes S1) adding a 1-butene monomer, a catalyst, a cocatalyst and an external electron donor into a polymerization reactor in order, and performing polymerization at 10-85 DEG C under 0.2-2.6 MPa with hydrogen being adopted as a molecular weight adjusting agent, reaction residence time being 1-4 h and the content of the hydrogen in a gaseous material being 1-1000 ppm; and S2) charging according to a ratio same as the ratio in the steps S1), controlling the content of the hydrogen in the gaseous material to be 1-1000 ppm, continuing polymerization, discharging the reaction material from the polymerization reactor at the same time, and removing the unreacted 1-butene monomer from the discharged reaction material through flash evaporation to obtain the highly isotactic poly(1-butene). The method can be used for industrial production of the highly isotactic poly(1-butene).

The invention relates to the technical field of fine chemical engineering, in particular to an improved refining process of 1, 4-dihydroxy anthraquinone. The process comprises the following steps: adding xylene into a reaction container to dissolve a 1, 4-dihydroxy anthraquinone crude product until solids are not reduced any more to obtain a 1, 4-dihydroxy anthraquinone crude product solution; adding an aqueous alkali solution into the 1, 4-dihydroxy anthraquinone crude product solution to extract phthalic acid and p-chlorophenolsulfonic acid, and carrying out settling separation to obtain an aqueous alkali layer and an insoluble substance layer so as to obtain a xylene layer; carrying out water vapor distillation on the xylene layer, recycling the obtained xylene solvent, and filtering and washing the remaining aqueous solution to obtain a refined product of 1, 4-dihydroxy anthraquinone. The product treated by the process disclosed by the invention can effectively meet the raw material requirement of solvent dye, basically has no waste, and the yield can reach 95-97%, and even 98-99% according to the internal standard.

The invention relates to a fertilizer, which comprises the following components (weight percentage): 53-65% of rape straw, 17-25% of urea, 4-8% of diammonium phosphate, 6-12% of water, 3-8% of magnesium sulfate, 2-3% of phosphorus pentoxide, 2-6% of potassium sulfate, 6-8% of potassium chloride and 3-6% of zinc sulfate. With the technical means, the fertilizer provided by the invention has the characteristics of simple making and convenient processing, and can meet the demand of crops for raw materials according to common planting methods. By using the rape straw as the main raw material, the resource is rationally utilized, and other common raw materials are also added to effectively meet the demand of the fertilizer for necessary elements. The fertilizer can adapt to raw materials needed by planting of different plants, and increases the plant yield.

The invention relates to a rapid synthesis method of AgGaGenSe2(n+1) series compounds and aims at solving the problems that an existing conventional AgGaGenSe2(n+1) (n=2,3,4,5) series compound element high temperature synthesis method is low in synthesis speed and the proportion of ingredients is difficult to control. The synthesis method comprises the following steps: taking high-purity Ag2Se, Ga2Se3 or AgGaSe2 and GeSe2 as initial raw materials, adjusting the molar ratio of GeSe2, and rapidly synthesizing the AgGaGenSe2(n+1) series compounds, namely AgGaGe2Se6, AgGaGe3Se8, AgGaGe4Se10 and AgGaGe5Se12. Specific operation steps are as follows: (1) pretreatment on a synthesis crucible; (2) determination of a raw material ratio; (3) heating oscillation; and (4) cooling. The characteristics of convenient operation, high synthesis speed and easy-to-control components are realized by adopting the method provided by the invention for synthesizing the AgGaGenSe2(n+1) series compounds.

The invention relates to caprylic/capric acid-lauric acid medium-carbon chain oil and a preparation method and application thereof. Camphor tree seed kernel oil and caprylic acid are subjected to binary ester exchange, and fatty acid on glycerol skeleton molecules of the camphor tree seed kernel oil is recombined,the fatty acid incaprylic/capric acid-lauric acid medium-carbon chain oil is calculated by mass and the mass ratio of caprylic acid to the camphor tree seed kernel oil in the caprylic/capric acid-lauric acid medium-carbon chain oil is 0.3-0.6. Camphor tree seed kernel oil is utilized to construct the caprylic/capric lauric acid medium-carbon chain oil product capable of rapidly supplementing energy in a body and remarkably improving glucose and lipid metabolism disorder in the body, high-value utilization of camphor tree seed resources can be promoted, the situation that medium-carbon chain oil products in China mainly depend on import is ended, and the diet and nutritional requirements of consumers, especially patients with metabolic syndrome, athletes, patients with long-carbon-chain fatty acid transport, metabolism and absorption disorders and critical patients are met.

The invention discloses an economic and environmental-friendly planting method of morinda officinalis. The planting method comprises the steps of digging planting grooves in the ground of a morinda officinalis planting region, sleeving a permeable cloth bag in each planting groove, stuffing each cloth bag with soil, then growing morinda officinalis seedlings in the soil in the cloth bags, performing water and fertilizer management and disease and insect pest management, enabling the morinda officinalis to grow, when the morinda officinalis is gathered, digging out the soil around the cloth bags, and taking out the cloth bags so as to harvest the morinda officinalis. The planting method disclosed by the invention is environmentally-friendly, water and soil erosion cannot be caused during gathering, the problems of planting waterlogging and the like are solved, the economic returns of planting households are increased, raw material requirements for pharmaceutical industry are met, marketrequirements are further met, the planting method is simple and easy to operate, economic and environmental-friendly, and the planting method is worth large-area promotion for planting.

The invention relates to a method for catalyzing and synthesizing 10-deacetylbaccatin (DAB) III by utilizing biocatalysts. The method comprises the following step of: adding fusarium mairei and xylosidase as biocatalysts to a substrate to carry out a catalytic reaction to generate the 10-DAB, wherein the substrate is waste residues from taxol extraction. In the method, the waste residues which are obtained from the taxol extraction and contain a large quantity of taxane compounds are subjected to secondary catalysis and conversion so that the taxane compounds are converted into the 10-DAB III used as a chemical intermediate for synthesizing the taxol, thereby the requirement on raw materials of semi-synthesizing the taxol or docetaxel is greatly met and the purposes of comprehensively utilizing the waste residues from extraction, reducing the production cost and improving the economic benefits of enterprises are achieved.

The invention relates to a process for preparing lithium fluoride from lepidolite. The process comprises the following steps: 1, acidifying lepidolite; 2, soaking clinker in water; 3, aluminum deposition; 4, purifying; and 5, concentrating and precipitating lithium. The process has the advantages that 1, lithium and fluorine in the low-grade lepidolite are comprehensively utilized to generate the lithium fluoride, a fluorine-containing raw material does not need to be introduced additionally, and compared with a process for producing the lithium fluoride from hydrofluoric acid and lithium carbonate, the cost is low, the flow is short, and the operation is simple; 2, lithium fluoride mother liquor generated by the process is returned to an aluminum precipitation section and can form double salt with aluminum sulfate to effectively remove impurity salts, so that alkaline substances used in an impurity removal section can be effectively saved; and 3, the reserves of the lepidolite in China are very rich, how to comprehensively utilize various elements in the lepidolite to turn waste into wealth is the primary responsibility of each scientific worker, and the lithium fluoride prepared by the process meets the ever-increasing raw material demand of lithium battery electrolyte lithium hexafluorophosphate, and is of great significance to development of lithium battery new energy in China.

The invention discloses a cosmetic facial cleanser, which is prepared by weight parts from the following raw materials: 1-2 parts of vitamin C, 12-13 parts of cherry juice, 10-12 parts of glycerin, and 2-4 parts of squalane , 3-7 parts of mugwort leaves, 4-8 parts of lavender, 25-40 parts of honey and 15-26 parts of milk. The beauty facial cleanser of the present invention has the functions of skin care, whitening and beauty, meets the raw material requirements of the facial cleanser, saves costs, enriches the effects, and improves economic benefits.

The invention provides waterproof asphalt which comprises the following components in parts by weight: 40-70 parts of No.70 asphalt; and 40 to 70 parts of base oil. The No.70 asphalt is residual oil obtained by distilling blended crude oil; the base oil comprises second line vacuum distillation wax oil; third line vacuum distillation wax oil; and coker gas oil. the second line vacuum distillation wax oil and the third line vacuum distillation wax oil are side fractions obtained by reduced pressure distillation of blended crude oil; and the blended crude oil comprises the crude oil and the coker gas oil. According to the waterproof asphalt provided by the invention, a crude oil blending method and a base oil compounding method are mutually coordinated and matched, so that the defects of waterproof asphalt raw materials and base oil in the traditional sense are overcome, and the technical difficulties that W200 # waterproof asphalt is unstable in performance index and high and low temperature performance conflicts are solved; and the technical problems of low-temperature performance, stripping performance, heat resistance and the like of the self-adhesive waterproof coiled material based on the W200 waterproof asphalt are effectively improved. The invention further provides a waterproof roll.

The invention discloses a whitening and rejuvenating facial cleanser, which is prepared by weight parts of the following raw materials: 1-2 parts of loofah extract, 12-13 parts of papaya extract, 10-12 parts of glycerin, squalane 2-4 parts, 3-7 parts of aloe extract, 4-8 parts of lavender, 25-40 parts of vitamin E and 15-26 parts of milk. The whitening and rejuvenating facial cleanser of the present invention has the functions of skin care, whitening and beauty, meets the raw material requirements of facial cleanser, saves cost, enriches effects, and improves economic benefits.

The invention discloses a putty powder stirring device for the building field, and relates to the technical field of building construction. The putty powder stirring device comprises a box body, a motor is arranged at the lower end of the exterior of the box body, the output end of the motor is connected with a stirring shaft, a plurality of stirring blades are evenly arranged at the end, penetrating through the box body, of the stirring shaft, the uppermost end of the stirring shaft is fixedly connected with a support, limiting blocks are symmetrically and fixedly connected to the two ends ofthe support, the limiting blocks are movably connected into a limiting groove formed in a stirring rod, a main shaft is in transmission connection with the stirring shaft close to the motor through abelt transmission set, a first sector gear is in key connection with the main shaft, and the first sector gear is in meshing transmission with a rack plate. Through linkage type transmission, combined rotation of the stirring rod is achieved, the stirring blades on the stirring shaft fully mix raw materials in the box body in an up-down all-around mode, and the uniform mixing and stirring qualityof putty powder is guaranteed. The device is compact in structure and convenient to move, the raw material requirement of a construction site is completely met, the construction progress is accelerated, and the working efficiency is improved.

The invention discloses a method for selectively recovering lithium from waste lithium batteries and preparing lithium carbonate. The method comprises the following steps: mixing waste battery positive electrode powder with a nitrating agent to obtain a mixture, performing a nitration reaction on the mixture to obtain a nitrate product, calcining the nitrate product is at 200-550 DEG C to obtain calcined sands, leaching the calcined sands, performing solid-liquid separation to obtain a lithium-rich filtrate, adjusting the pH value of the lithium-rich filtrate to be 10 or more, performing solid-liquid separation to obtain a purified liquid, adding the purified liquid to a soluble carbonate solution, carrying out a reaction, performing solid-liquid separation, and performing water washing and drying on the obtained filter residues to obtain the lithium carbonate. A principle that the decomposition temperature of lithium nitrate is obviously higher than that of corresponding nitrates of copper, cobalt, aluminum and manganese is ingenious utilized to realize selective separation and recovery of lithium, and the lithium recovery rate in the invention is 20% or above more than that of conventional wet technologies. The high-purity lithium carbonate can be obtained without a complicated purification process, and the method has the advantages of simple process, low cost, high recoveryefficiency of valuable metals, and convenience for industrial production and application.