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 relates to a detector-grade high-purity germanium polycrystal preparation process and special equipment thereof. The process comprises two parts of cleanness of a raw material germanium ingot and zone-melting equipment and zone-melting purification. The special equipment comprises a base, a trolley track, a trolley, a quartz pipe and a quartz pipe bracket, wherein the raw material germanium ingot is arranged in the quartz pipe; a high-frequency heating coil is fixed to the trolley; and the high-frequency heating coil is a double-layer coil with the width of 1-3cm and surrounds outside the quartz pipe. The reactant and the zone-melting 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; a narrow melting zone structure is adopted in the zone-melting process and moves to heat for zone-melting so that the heat quantity is concentrated, the dephlegmation effect of impurities in the zone-melting process is greatly improved, and the purifying efficiency is improved; and the product purity is further improved through repeated zone melting.

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 discloses an electron beam additive manufacturing method for a nickel base alloy structural component. The method comprises the steps that under the condition of a vacuum chamber, a nickel base alloy base body is placed in a working table in advance, and the pressure intensity inside the chamber is made to reach 4.8*10<2> Pa; a specially-made powder delivering device is utilized to spray Ni powder, Nb powder, Mo powder, Cr powder and rear earth CeO2 superfine metal powder which are uniformly mixed according to a certain mass compounding ratio into a molten pool through which electron beams are generated, so that an electron beam cladding layer metallurgically bonded with the base body; and then, layer-by-layer electron beam cladding is achieved through a numerical control processing procedure adopted for each layer, so that the three-dimensional metal component is obtained finally. By means of the electron beam additive manufacturing method, the nickel base alloy structural component which has the structural characteristic, namely rapid solidification and is high in performance, fully compact and complex in shape is manufactured. The manufacturing method is low in manufacturing cost, short in manufacturing cycle, high in material utilization rate and stable in performance, the complex component can be manufactured rapidly, and structural strength of the nickel base alloy structural component can be remarkably improved; and structural defects such as pores, cracks and residual stress inside an alloy are reduced.

The invention relates to a technology for preparing high-cleanliness and high-octane gasoline from methanol through a one-step catalysis method. The process of preparing gasoline from methanol is a strong heat release process, and existing technologies for preparing gasoline from methanol at home and abroad all adopt recycle gas (which mainly contains mixed methane, ethane, hydrogen, propane, butane, pentane, carbon monoxide, carbon dioxide and the like) as a heat taking medium to take away heat generated in a reactor, so as to control the outlet temperature of the reactor; liquefied gas (mainly containing propane and butane) produced by a device per se is adopted in the technology to substitute the recycle gas and enters the reactor to serve as a heat removal medium, and the liquefied gas rarely participates in reaction under the same reaction condition, the reaction product is basically unchanged. The technology has the advantages that a recycle gas compressor is not needed, the equipment investment is greatly reduced, the running power consumption of the device is reduced, the heat exchange flow of the device is optimized, the device is simple, stable and reliable in operation, and meanwhile, the public engineering grade is also reduced, so that the technology has significant practicability, huge economic benefits and wide application prospect.

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.

An optimized apparatus for preparing purified water by reverse osmosis and chemical desalting has a strong alkaline anionic exchanger unit and a cation and anion mixed exchanger unit. Its preparing process is also disclosed.

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 discloses a non-self-consumption electric arc smelting preparing method of a tungsten alloy. The method comprises the steps of tungsten powder preliminary purifying, cold pressing molding, prefabricated block preparing, vacuum pumping, argon leading and electric arc smelting. Compared with the prior art, the method is simple in process, high in efficiency and low in cost, the purification effect is achieved, the tungsten alloy (the tungsten proportion content can reach 99.7% to 99.9%, and the proportion can reach up to 19.11) which is high in purity, free of obvious air holes, high in compactness (98.1% to 99.2%) and ultrahigh in proportion can be prepared, and the method can be applied to the fields of the electronic industry, the nuclear industry, aerospace and dynamic high-pressure physics and the like.

The invention relates to a kit and a detection method for accurately determining concentrations of vitamin A and vitamin E in human serum. The kit comprises a calibration material mother liquor, an internal standard, quality control materials, a diluent, an extraction liquid, a reconstitution fluid, and mobile phases. The calibration material mother liquor contains 2, 6-di-tert-butyl-4-methylphenol absolute ethyl alcohol as a diluent, the concentration of 2, 6-di-tert-butyl-4-methylphenol is 0.1-1.0 mg / mL, and the calibration material mother liquor has six concentration points; an internal standard solution is a mixed solution of retinol acetate and vitamin E acetate; the quality control materials comprise a quality control material 1 and a quality control material 2; the diluent is a blank matrix solution of bovine protein serum, and the mass percentage content of the bovine protein serum is 1-10%; the extraction liquid is an n-hexane solution containing 2, 6-di-tert-butyl-4-methylphenol; the reconstitution fluid is a methanol aqueous solution with the volume percent of 93%-100%; and a mobile phase A is an aqueous solution, a mobile phase B is a methanol solution, and the mobile phase A and the mobile phase B contain formic acid with the volume percentage concentration of 0-0.2%. The kit has the advantages of high accuracy, short detection time, low reagent consumption, convenient operation and low cost.

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 provides a system for separating an ammonia and carbon dioxide mixed gas, comprises the following steps of: firstly, compressing the ammonia and carbon dioxide mixed gas, transmitting into a carbon dioxide separation tower after the pressure is increased to 15-25bar, and sequentially entering into a water separation tower and an ammonia separation tower. The system has the advantages that the electric energy consumed by compressing the tail gas is converted into the enthalpy of the tail gas, a great quantity of the released heat energy can be effectively used when the ammonia in the tail gas is absorbed by a carbon separation tower; and the system can isolate the dilute ammonia carbon water solution from the side line of the water separation tower, so that the load of the water separation tower can be greatly reduced, and the energy consumption can be reduced. Furthermore, the mixed gas is further compressed into a plurality of segments, and the intersegment cooling adopts a direct spray liquid cooling method, rather than an unconventional indirect water cooling method, so that the system has the advantages that the sensible heat is converted into the latent heat, however, the total enthalpy value of the logistics can be invariably kept. The fourth advantage of the system is to replace a cooler taking circulating cooling water as a cooling medium with an air cooler, so that the energy consumption can be reduced.

The invention relates to a composition taking high-purity ginkgolide B as an active ingredient. The composition is a ginkgolide B injection. The ginkgolide B injection comprises the following pharmaceutical active ingredients in parts by weight: 20 parts of ginkgolide B extract, 580-630 parts of polyethylene glycol-400, 770-830 parts of glycerol and 640-700 parts of ethanol, wherein the ginkgolide B extract is extracted from ginkgo leaves, and comprises ginkgolide B and ginkgolide K, the content of the ginkgolide B is more than 99%, and the content of the ginkgolide K is less than 0.6%. In a ginkgolide B composition provided by the invention, the ginkgolide B in the ginkgolide B extract as a raw medicine has a high purity, and the content of the ginkgolide K is extremely low, so that requirement of the injection on the raw medicine is met and the bioavailability of the raw medicine and the medication safety of patients are improved.

The invention provides an ethylene tetramerization method. The method comprises a step of carrying out an ethylene tetramerization reaction in the presence of a main catalyst as shown in a formula (I) which is described in the specification, a cocatalyst, an organic solvent and water. In the formula (I), R1, R2, R3, R4 and R5 are identical or different and are independently selected from a group consisting of an alkyl group, a cycloalkyl group and monocyclic and polycyclic aryl groups; M is a transition metal; X is halogen; and n is an integer in a range of 1 to 3.

The invention relates to a 24-valence pneumococcus polysaccharide vaccine and an identification method, namely an immune rate scatter turbidimetry thereof. The immune rate scatter turbidimetry at least comprises the steps of enabling a polysaccharide antigen to be in contact with corresponding antibodies so as to form an antigen-antibody compound, and measuring the reaction rate value of the antigen-antibody compound by virtue of the immune rate scatter turbidimetry. The rate scatter turbidimetry is a technical measure established based on an immunochemical method, and the intensity change ofscattered light of antigen-antibody compound particles suspended in a small cup can be measured by virtue of the rate scatter turbidimetry, the reaction rate is measured and is in a linear relation with the concentration of an antigen and / or an antibody in a certain range, and the light intensity is changed once the reaction is started, so that a reaction result can be obtained within dozens of seconds. The method is strong in specificity and high in sensitivity, the detection time is saved, and the antigen is in direct contact with the antibody, so that the detection of low-concentration samples is promoted, and the method can be applied to the identification of a stock solution and / or a semi-finished product and / or a finished product in the production process of the vaccine.

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 provides an ethylene tetramerization method. The method comprises a step of carrying out an ethylene tetramerization reaction in the presence of a main catalyst as shown in a formula (I) which is described in the specification, a transition metal compound, an organic solvent and water. In the formula (I), R1 and R2 are independently selected from a group consisting of an alkyl group, a cycloalkyl group and monocyclic and polycyclic aryl groups; R3, R4, R5 and R6 are independently selected from a group consisting of monocyclic and polycyclic aryl groups and cycloalkyl groups; M is a transition metal; X is halogen; and n is an integer in a range of 1 to 3.

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 present invention relates to an ethylene tetramerization method including ethylene tetramerization in the presence of a main catalyst shown as a formula (I), a co-catalyst, an organic solvent and water, wherein R1 and R2 are each independently selected from alkyl, cycloalkyl and monocyclic or polycyclic aromatic groups; R3, R4, R5 and R6 are each independently selected from monocyclic or polycyclic aromatic or cycloalkyl groups, M is a transition metal, X is selected from halogens, and n is an integer of 1 to 3.

The invention discloses a method and application for screening drug targets through combination of the protein thermal stability testing and the bidirectional stable isotope labeling proteomics. According to the method, the forward-reverse isotope labeling quantitative method is combined with the protein thermal stability testing technology, and proteins in cells have thermodynamic change under coating of drugs can be observed, thereby assisting in overall identifying target proteins in interaction with the drugs. The method overcomes the defect of high false positive rate of the conventionalidentifying methods, has the advantages of high throughput, high depth, high precision, wide detection range and short time consuming, breaks the limit of the prior art in the terms of identifying ofthe drug targets, and provides powerful support to research on the drug targets.

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 discloses conductive paint for shielding signals and a use method of the conductive paint. The conductive paint comprises a prime coat, a floating coat and a top coat, and the prime coat is composed of a component A and a component B; the component A is prepared from the following raw materials in percentage by weight: 22 to 32 percent of semi-finished product resin, 35 to 45 percent of conductive copper paste, 15 to 25 percent of cyclohexanone, 5 to 15 percent of butyl ester, 0.5 to 1.5 percent of anti-settling agent, 0.1 to 1 percent of defoaming agent and 1 to 2 percent of silane coupling agent; the semi-finished resin is prepared from the following raw materials in percentage by weight: 5-15% of cyclohexanone, 10-20% of ethylene glycol monobutyl ether, 10-20% of PMA, 15-25% of butyl ester and 35-45% of hydroxy acrylic resin; the floating coat is prepared from the following raw materials in percentage by weight: 10-15% of thermoplastic acrylic resin, 5-15% of cyclohexanone, 5-15% of PMA, 1-5% of an anti-settling aid, 40-45% of conductive copper paste and 15-25% of conductive pure silver paste. Three layers of coatings are adopted to form the high-performance signal shielding layer, the resistance value of the floating coat in the conductive paint is below 0.2 ohm, signals can be absolutely shielded, the method is used for replacing an original signal shielding layer made of metal, cost can be effectively reduced, and efficiency can be effectively improved.

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 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.