45results about How to "High purity requirements" patented technology

The invention relates to a production method for producing semi-reinforcing carbon black, methanol and liquid ammonia with coke oven gas, which comprises the followings steps: the desulfurization of coke oven gas, demethanization realized through pressure swing absorption, the synthesis and rectification of methanol, CO conversion of carbon black exhaust gas and exhaust gas from methanol plant, the synthesis of decarburization and liquid ammonia; the method is characterized in that the coke oven gas is demethanized through pressure swing absorption; methane gas enters into a carbon black reaction furnace; air or oxygen is fed in as oxidizer; carbon block is generated in the reaction furnace; the semi-reinforcing carbon black product is obtained after the carbon block is granulated by a bag filter; the carbon black exhaust gas can enter into a methanol synthesis system or a liquid ammonia production system. The demethanized gas receives methanol synthesis treatment; H2 of the exhaust gas from methanol plant after methanol synthesis is extracted by a pressure swing absorber, and the residual gas after hydrogen extraction enters into a synthetic ammonia system to prepare liquid ammonia. The production method is characterized by short process route, low investment, small pollution, quick effect and the like, and can reasonably utilize the resources.

The invention relates to a detector-grade ultrahigh-purity germanium single crystal preparation process and special equipment thereof. The process comprises two parts of the cleanness of a polycrystal ingot and crystal pulling equipment and crystal pulling by a single crystal furnace. The special equipment, namely the single crystal furnace, in the process comprises a fixed device, a heating device, a cooling device, a ventilating device and a crystal pulling device. The reactant and the reaction equipment in the invention are both subjected to strict physical and chemical cleaning, the purity of cleaning liquid is high, the reaction process is always carried out in an ultraclean working platform, and the purity requirement on the reactant and the reaction environment is high, so that a precondition is provided for manufacturing high-purity products; the reaction equipment has higher cleanness, and a furnace body, a crucible and internal parts are all made of high-purity quartz piecesinstead of the traditional graphite materials; a high-frequency induction heating way is adopted for preventing impurity contamination generated during direct heating by resistance graphite; and the probability of mixing impurities in the product pulling process is reduced, and the purity of products is guaranteed.

The invention discloses a high-conductivity (63 percent IACS) hard aluminum wire and a preparing technology thereof. The preparing technology of the high-conductivity hard aluminum wire comprises the following steps that firstly, a high-conductivity aluminum rod is prepared in a continuous casting and rolling mode; secondly, the high-conductivity aluminum rod is drawn into high-conductivity aluminum wires which are drawn through various dies, wherein the coefficient of elongation of the last die is controlled within 1.35-1.50, and the coefficients of elongation of the other dies are controlled within 1.30-1.40; thirdly, a plurality of high-conductivity aluminum wires are twisted, the pay-off tension is controlled in the twisting process, the control air pressure is smaller than or equal to 3 kilograms, the tensile strength of the manufactured single hard aluminum wire is larger than or equal to 160 MPa, and the conductor resistance is smaller than or equal to 0.027366 Omega*mm<2> / m when the temperature is 20 DEG C. The tensile strength of the manufactured single hard aluminum wire in an overhead conductor is larger than or equal to 160 MPa, the conductor resistance is smaller than or equal to 0.027366 Omega*mm<2> / m when the temperature is 20 DEG C, the tensile strength of the hard aluminum wire is kept, the conductivity of the hard aluminum wire is increased to 63 percent IACS, and the conductivity is increased by 3.28 percent compared with the stipulated conductivity of a hard aluminum wire in common GB / T17937-2009. The high-conductivity hard aluminum wire is used in the overhead conductor, the loss of the circuit electric energy can be greatly reduced, the circuit operation cost is reduced, and the carrying capacity of the wire can be obviously improved.

A kind of ethylene tetramerization method of the present invention, comprises carrying out ethylene tetramerization reaction under the presence of main catalyst shown in formula (I), co-catalyst, organic solvent and water; Wherein R1 and R2 are each independently selected from alkyl, cycloalkyl Or monocyclic and polycyclic aryl groups; R3, R4, R5 and R6 are each independently selected from monocyclic or polycyclic aryl or cycloalkyl groups, M is a transition metal, X is selected from halogen, and n is 1 to 3 an integer of .

The invention relates to the technical field of chemical separation and purification, especially to a preparation method for high-purity submicron lithium carbonate. The preparation method comprises the following steps: dissolving a crude lithium carbonate product in high-purity water to prepare lithium carbonate slurry; allowing the lithium carbonate slurry to enter a rotary packed bed and introducing CO2 gas into the rotary packed bed so as to prepare lithium bicarbonate liquid; allowing the lithium carbonate liquid to successively pass through a pretreated calcium-magnesium ion exchange resin apparatus and boron ion exchange resin apparatus so as to allow a second solution to be formed after removal of impurities containing calcium, magnesium and boron in the lithium bicarbonate liquid; uniformly mixing the second solution with a dispersant so as to form a third solution and adding the third solution into the rotary packed bed for a reaction so as to produce lithium carbonate precipitate; and drying the lithium carbonate precipitate so as to obtain a high-purity submicron lithium carbonate product. The preparation method employs crude lithium carbonate of the lithium salt industry as a raw material for preparation of the high-purity submicron lithium carbonate; and the raw material is more widely and easily available and cost for the raw material is greatly reduced.

The invention relates to the field of chemical industry, and discloses a method for preparing a polymer oil absorption material. The method comprises the following steps of: heating to melt raw materials so as to obtain a melt by a horizontal disc rotary centrifugal spinning method, and slowly putting the melt into the center of a turntable of a horizontal disc rotary centrifuge, which rotates at high speed, to generate silk, namely the polymer oil absorption material. By the method, low-cost raw materials are adopted, the preparation process is simple, and the prepared oil absorption material has high selectivity and oil absorption efficiency and a wide industrial application prospect.

The invention relates to a polysaccharide protein conjugate and an identification method thereof, in particular to a polysaccharide protein conjugate vaccine made from the polysaccharide protein conjugate, and an identification method thereof. A rate scattering turbidimetry is a technical means established based on an immunochemical method, and can measure scattered-light intensity changes causedby antigen-antibody complex aggregate particles suspended in a small cup, and a reaction rate value is acquired within tens seconds; complex aggregate particles are formed through the antigen-antibodyreaction, and have different rates according to different concentrations of antigens and / or antibodies. The identification method has strong specificity and sensitivity, and the detection time is shortened; the antigens directly contact with the antibodies, and accordingly, low-concentration sample detection is benefited; the identification method can be applied to identification of stock solutions and / or semi-finished products and / or finished products in the process of vaccine production.

The invention relates to a composition of a urea reducing agent capable of improving atomization effect, which is composed of a component A, a component B, a component C, a component D and a component E; and is characterized in that the component A is urea which accounts for 25 parts-30 parts of a mixture, the component B is low molecular alcohols which account for 15 parts-35 parts of the mixture, the component C is an industrial kathan anticorrosion bactericide which accounts for 0.002 parts-0.005 parts of the mixture, the component D is industrial fluorescent dye which accounts for 0.001 parts-0.003 parts of the mixture, and the component E is water which accounts for 34.997 parts-59.992 parts of the mixture. The composition is taken as a vehicle reducing agent which meets the 4 level and more emission standard of the state. Compared with the traditional urea reducing agent, the surface tension of the composition of urea reducing agent is reduced by more than 50%, the spray atomization performance of vehicles can be improved, NOX removal reaction efficiency can be improved, the escape amount of NH3 can be minimized, the process for removing PM can be benefited, the cost is low and the no pollution is generated.

The invention discloses a high-conductivity (63 percent IACS) hard aluminum wire and a preparing technology thereof. The preparing technology of the high-conductivity hard aluminum wire comprises the following steps that firstly, a high-conductivity aluminum rod is prepared in a continuous casting and rolling mode; secondly, the high-conductivity aluminum rod is drawn into high-conductivity aluminum wires which are drawn through various dies, wherein the coefficient of elongation of the last die is controlled within 1.35-1.50, and the coefficients of elongation of the other dies are controlled within 1.30-1.40; thirdly, a plurality of high-conductivity aluminum wires are twisted, the pay-off tension is controlled in the twisting process, the control air pressure is smaller than or equal to 3 kilograms, the tensile strength of the manufactured single hard aluminum wire is larger than or equal to 160 MPa, and the conductor resistance is smaller than or equal to 0.027366 Omega*mm<2> / m when the temperature is 20 DEG C. The tensile strength of the manufactured single hard aluminum wire in an overhead conductor is larger than or equal to 160 MPa, the conductor resistance is smaller than or equal to 0.027366 Omega*mm<2> / m when the temperature is 20 DEG C, the tensile strength of the hard aluminum wire is kept, the conductivity of the hard aluminum wire is increased to 63 percent IACS, and the conductivity is increased by 3.28 percent compared with the stipulated conductivity of a hard aluminum wire in common GB / T17937-2009. The high-conductivity hard aluminum wire is used in the overhead conductor, the loss of the circuit electric energy can be greatly reduced, the circuit operation cost is reduced, and the carrying capacity of the wire can be obviously improved.

The invention spray drying system, which comprises a charging pump, a spray drying tower, a pulse bag-type dust collector, a plate-type heat exchanger and an air heater, wherein the bottom of the spray drying tower is connected with a tower bottom opening pipe; a discharge hole of the spray drying tower is formed on the lateral surface of the tower bottom opening pipe; a fluid director is arranged in the tower bottom opening pipe; and a column body matched with the inner diameter of the tower bottom opening pipe is positioned at the bottom of the fluid director, and a smooth curved surface ispositioned on the upper part of the fluid director. In the spray drying system, the fluid director is arranged in the tower bottom opening pipe, so wind speed in the tower bottom opening pipe can be improved, and products are prevented from depositing at the bottom of the tower and the tower bottom opening pipe; and a stirring cleaning device is arranged at the corner of a pipeline, so the spray drying system can convey materials smoothly, and is favorable for improving production efficiency and ensuring the quality of the products.

The invention relates to the technical field of ternary material manufacturing, in particular to an integrated production process for a ternary material. The process comprises the following steps: fully stirring and mixing a ternary material raw material and pure water in stirring and mixing equipment to form a ternary material salt solution; feeding the ternary material salt solution into a washing kettle in virtue of the stirring and mixing equipment, adding dilute alkali liquor, a complexing agent, a coating agent and pure water at the same time, carrying out a complexing reaction and conducting ageing; after aging, feeding a product of the previous step into a stirring tank type filter, adding dry powder, and carrying out slurrying, washing and filtering by using pure water and dilutealkali liquor; and allowing a filtered and washed filter cake to enter a drying machine via a solid discharging pipe and carrying out drying. The process can adapt to the process requirements of largeproduction scale, high water content and washing effect requirements, high particle crystal form requirements, high purity requirements and high closed operation requirements of the ternary material;and the self productivity and the production efficiency of the process can be effectively ensured, and the green manufacturing characteristics of efficiency improvement, energy conservation, consumption reduction and emission reduction required by the current green manufacturing are synchronously achieved.

The invention provides a polyacrylic acid material with oxosilane and the synthesis technology. The material is the polymer of acrylic acid and vinylsiloxane or acrylic ester with oxosilane and acrylic ester. The synthesis technique comprises the following steps: adding acrylic acid and vinylsiloxane or acrylic ester with oxosilane and acrylic ester according to 0.5-99.5:0.1-99.5:0-99.5 in the autoclave; adding 0.01-5.0wt% initiating agent; controlling the pressure of carbon dioxide at 8-25MPa; heating to 40-100Deg. C; reacting for 2-8 hours; extracting the product to the constant weight with carbon dioxide in the original position. The invention solves the difficult problem that the organic oxosilane monomer can't be grafted to the backbone chain, which has the food quality product and no pollution, can be used for tertiary oil extraction, the conversion of solar energy, the water treatment, emulsion paint, soil improvement, food and medical purpose.

The invention discloses an identification method for illegally adding cyclohexyl nortadalafil to food, and belongs to the field of medicinal chemistry. Described identification method comprises the following steps: (1) prepares the need testing solution of UPLC-Q-Orbitrap HRMS ultra-high performance liquid chromatography-quadrupole / electrostatic orbitrap high-resolution mass spectrometer and HPLC high-performance liquid chromatography Need testing solution; (2) get need testing and carry out compound separation and purification, obtain purified matter; (3) get gained purified matter, prepare NMR nuclear magnetic resonance instrument need testing; (4) need testing is detected, including using LC‑20AR prepared liquid chromatography, PAD diode array detector, analyzed the obtained primary and secondary mass spectra and characteristic absorption spectra, and obtained the structural formula of cyclohexyl nortadalafil through nuclear magnetic resonance, Finally, the illegally added cyclohexyl nortadalafil was identified. Using the method of the invention, the illegally added cyclohexyl nortadalafil in food can be effectively identified.

The invention relates to an immunogenic polysaccharide, an identification method, a polysaccharide vaccine prepared by using the immunogenic polysaccharide, and an identification method of the vaccine. Every identification method at least comprises the following steps: a polysaccharide antigen is in contact with a corresponding antibody to form an antigen-antibody complex, and the reaction rate ofthe generation of the antigen-antibody complex is detected by the rate scattering immunoturbidimetric assay technology. The rate scattering immunoturbidimetric assay technology is a technical way established based on an immunochemical technology, can be used to measure the intensity change of scattered lights caused by particles suspended in a small cup, and allows the reaction rate value to beobtained in several tens of seconds. The reaction of the antigen and the antibody is carried out to form antigen-antibody complex aggregate particles, and the particle formation rate differs dependingon the concentration of the antigen or the antibody. The methods have the advantages of high specificity, high sensitivity, saving of the detection time, and facilitation of the detection of a low-concentration sample by direct contact of the antigen and the antibody, and can be used for identifying a stock solution and / or a semi-finished product and / or a finished product in the vaccine production process.

The invention discloses a method and application of protein thermal stability measurement combined with bidirectional stable isotope labeling proteomics screening drug targets. This method uses the quantitative method of forward-reverse isotope labeling combined with the measurement technology of protein thermal stability change, which can globally identify the target protein that interacts with the drug by observing which proteins in the cell undergo thermodynamic changes under the package of the drug . The method of the present invention overcomes the shortcomings of the high false positive rate of traditional identification methods, and has the characteristics of high throughput, high depth, high precision, wide detection range, and short time-consuming, breaking the limitations of the prior art in drug target identification It provides strong support for drug target research.

A kind of method of ethylene tetramerization of the present invention, comprises carrying out ethylene tetramerization reaction under the presence of main catalyst shown in formula (I), co-catalyst, organic solvent and water; Wherein R1 and R2 are each independently selected from alkyl, cycloalkyl Or monocyclic and polycyclic aryl groups; R3, R4, R5 and R6 are each independently selected from monocyclic or polycyclic aryl or cycloalkyl groups, M is a transition metal, X is selected from halogen, and n is 1 to 3 an integer of .