145results about How to "Good industrial value" patented technology

The invention provides a static multistage melting crystallization method for preparing electronic grade phosphoric acid. The method comprises the following steps of: adding phosphoric acid liquid serving as a raw material into a crystallization tower at one time, and introducing a cooling/heating medium to a crystallization tower jacket to control the temperature of the phosphoric acid liquid; adding crystal seeds into the crystallization tower at constant temperature when the phosphoric acid liquid is cooled to the temperature of between 15 and 28 DEG C; and performing static melting crystallization operations of two to four stages by the following steps of: cooling and crystallizing the materials, discharging partial mother solution at constant temperature, heating and melting to the constant temperature, continuously performing the operation of next stage at the temperature, and gradually discharging the mother solution for N times in equal mass to gradually improve the purity of the phosphoric acid crystal. Finally, the left crystal in the tower is the product, and the crystal is melted by heating and collected. The method is simple in operation, low in energy consumption and mild in operating conditions; the product has high purity; an 88 to 90 percent electronic grade phosphoric acid liquid product is directly obtained; and the product purity index accords with multiple standards of domestic and foreign users.

The invention discloses a method for purifying flue gas through activating persulfate by ozone, and an apparatus thereof. Ozone in the flue gas contacts with persulfate in a solution in a bubbling-spray two stage reactor to generate sulfate radicals and hydroxy groups having strong oxidizability in order to oxidize and remove SO2, NOx, mercury, H2S and VOCs in the flue gas; and a reaction product solution enters a mercury separation tower to remove mercury, a mercury removed sulfuric acid and nitric acid solution enters an ammonia feeding tower, an ammonium sulfate and ammonium nitrate solution generated through the above reaction enters a product crystallization tower, and a flue gas waste heat utilizing device is used to evaporate and crystal recyclable agricultural fertilizers ammonium sulfate and ammonium nitrate. In the invention, ozone is adopted to induce persulfate to generate the sulfate radicals and hydroxy groups having extremely strong oxidizability, and the oxidbillities of the sulfate radicals and the hydroxy groups are second to that of fluorine, and are far higher than that of single ozone or persulfate, so the five pollutants can be efficiently simultaneously removed.

An optical filter of the present invention contains at least one tetra-acenaphthoporphyrin compound. The tetra-acenaphthoporphyrin compound has preferably its absorption maximum in a wavelength range of from 530 to 570 nm and a ratio of an absorption coefficient at 550 nm to an absorption coefficient at 525 nm of not less than 1.2. Also, a percentage of light transmittance at 550 nm to light transmittance at 525 nm is preferably not more than 85%. According to the present invention, it is possible to provide the optical filter which can eliminate an unnecessary light mainly existing in a wavelength of from 520 to 700 nm and is excellent in durability. A display unit using the optical filter of the present invention can improve contrast in a bright place, and improve color purity of luminescent color.

Provided is a positive-electrode material for nonaqueous-electrolyte secondary batteries, the positive-electrode material being capable of achieving both high capacity and high output when used for a positive electrode for nonaqueous-electrolyte secondary batteries. Also, provided is a method for manufacturing the positive-electrode material for nonaqueous-electrolyte secondary batteries, wherein a lithium metal composite oxide powder is mixed with lithium tungstate, the lithium metal composite oxide powder being represented by a general formula Li_zNi_1-x-yCo_xM_yO₂ (wherein 0.10≦x≦0.35, 0≦y≦0.35, 0.97≦z≦1.20, and M is an addition element and at least one element selected from Mn, V, Mg, Mo, Nb, Ti, and Al) and comprising primary particles and secondary particles composed of aggregation of the primary particles.

Provided is a method for manufacturing the positive electrode active material for nonaqueous electrolyte secondary batteries, the method comprising: a first step, wherein an alkaline solution with a tungsten compound dissolved therein is added to and mixed with a lithium metal composite oxide powder represented by a general formula LizNi1—x—yCoxMyO2 (wherein, 0.10≦x≦0.35, 0≦y≦0.35, 0.97≦Z≦1.20, and M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti, and Al), including primary particles and secondary particles composed of aggregation of the primary particles, and thereby W is dispersed on a surface of the primary particles; and a second step, wherein, by heat treating the mixture of the alkaline solution with the tungsten compound dissolved therein and the lithium metal composite oxide powder, fine particles containing W and Li are formed on a surface of the primary particles.

The invention relates to a MoS2/Ni3S2 electrode material as well as a preparation method and application thereof, which belongs to the technical field of environmental protection and energy of hydrogen production by virtue of electric decomposition of water. The application of different sulfur sources is verified to have great influence for the morphology and performance of a catalyst; and by virtue of comparison, the MoS2/Ni3S2 electrode synthesized by using thioacetamide as a sulfur source has optimum morphology, performance and reaction active site, the over-potential for the reaction can be greatly reduced, and the energy loss in the electrochemical hydrogen production process can be reduced. Meanwhile, the synthetic method is simple, and the foam nickel self-supported MoS2/Ni3S2 electrode can be synthesized by adopting a one-step hydrothermal method, so that the industrialized production and actual application value is high.

The invention relates to a method for preparing hydrogenated C9 petroleum resin by directional hydrogenation. The method comprises the following steps: (1) uniformly mixing C9 petroleum resin with a mixing solvent and then removing impurities through a Al2O3 packed bed; (2) conveying a pretreated liquid resin into a one-stage hydrogenation reactor loaded with Ni/Mo/W-Al2O3 catalyst and performing hydrogenation reaction, thereby acquiring a one-stage hydrogenated liquid resin; (3) conveying the one-stage hydrogenated liquid resin into a pressure-stabilizing flash column, thereby acquiring desulfurized liquid resin at the column bottom; (4) uniformly mixing the desulfurized liquid resin with hydrocracking aviation fuel and then feeding into a two-stage hydrogenation reactor, and performing hydrogenation reaction, thereby acquiring two-stage hydrogenated liquid resin; and (5) conveying the two-stage hydrogenated liquid resin into a decompression rectifying column, thereby acquiring the hydrogenated C9 petroleum resin at the column bottom. According to the method provided by the invention, the process is simple and convenient; the hydrogenation cost is low; the middle solvent is basically recycled; the prepared hydrogenated C9 petroleum resin has an excellent performance and a higher industrial value.

The invention discloses a method for producing high-purity 1-aminoanthraquinone through catalytic hydrogenation. The method has the advantages of simple equipment, safe operation, low production cost and no pollution. The method comprises the following steps of: preforming hydrogenation on 1-nitroanthraquinone and a solvent in the presence of a catalyst in a reactor, filtering off the catalyst, stirring or standing a reducing solution in an oxidant, and obtaining 1-aminoanthraquinone through oxidation of a small amount of perhydrogenation product in the reducing solution to promote solution oversaturation to realize homogeneous crystallization, so that the high-purity 1-aminoanthraquinone is obtained; and continuously applying a motor solution of which crystals are filtered off, and the catalyst mechanically, and after multiple mechanical application, adding a diluent into the reducing solution to obtain 1-aminoanthraquinone crystals, wherein in the catalytic hydrogenation reaction, a weight ratio of the solvent to the 1-nitroanthraquinone is (1.0-10.0):1, and the reaction temperature ranges from normal temperature to 120DEG C. The purity of the obtained 1-aminoanthraquinone is over 99 percent, the total yield in the process is over 98 percent, and in the production process, the consumption of the solvent is low, three-waste emission is avoided, and the production process is clean.

The invention discloses a method for preparing nano porous silicon by utilizing doped silicon particles. The method comprises the following steps: selecting silicon particles with a certain doping concentration, washing with hydrofluoric acid, then enabling the silicon particles to react in a solution which is prepared by selecting nitrate, hydrofluoric acid and oxidant with assistance of ultrasonic process centrifugally washing the silicon particles, and finally washing the silicon particles by using dilute nitric acid to obtain the three-dimensional nano porous silicon. The optimal process parameters such as best constitution of chemical etching corrosive agent, volume ratio and specific concentration of a reaction reagent, reaction time, reaction temperature, ultrasonic frequency, processing time and the like are screened out through a great number of experiments, and the prepared high-purity three-dimensional doped porous silicon is regular in pore shape, uniform in distribution and applicable to the fields such as lithium batteries, solar batteries, semiconductors and sensors. The method is strong in process maneuverability, low in cost, high in yield and applicable to industrialized mass production.

The invention discloses an efficient iron series catalyst for catalyzing isoprene polymerization as well as a preparation method and application thereof, and relates to the technical field of conjugated diene catalytic synthesis. The catalyst is prepared from iron pyridine compounds and methylaluminoxane. The preparation raw materials of the catalyst are simple and can be easily obtained; the costis low. When the catalyst is used for catalyzing isoprene polymerization, the ultrahigh activity is shown; the obtained polymers have high molecular weight; the molecular weight distribution is narrow; meanwhile, the structure of a main catalyst can be regulated and controlled by regulating ligands; the polymer structure can be further regulated in controllable way; in the same reaction, the influence of cocatalysts, the temperature and the main catalyst quantity on the reaction selectivity is not great.

The invention discloses a monitoring simulator for transponding satellite signals. The monitoring simulator comprises a receiving antenna unit, a receiving channel unit, a transmitting channel unit, a transmitting antenna unit, a power source, an industrial personal computer and a digital signal processing unit. The receiving antenna unit is connected with the receiving channel unit. The receiving channel unit is connected with the digital signal processing unit. The digital signal processing unit is connected with the transmitting channel unit. The transmitting channel unit is connected with the transmitting antenna unit. The transmitting channel unit, the digital signal processing unit and the receiving channel unit are connected with the power source respectively. The digital signal processing unit is connected with the industrial personal computer. By the monitoring simulator, the problem of noise interference of the transponding satellite signals is effectively solved, and trackability of the transponding satellite signals is guaranteed.

The invention relates to a process for preparing 3,3',5,5'-tetramethyl-4,4'-biphenyl didycidyl ether, wherein the 3,3',5,5'-tetramethyl-4,4'-biphenol is reacted with excess epichlorohydrin under the action of phase transition catalyst. The prepared has low epoxy equivalent weight, high yield, and simple reaction steps.

The invention discloses a method for preparing D-cystine and L-tryptophane by using DL-cysteine split by a microbial enzyme method. The method comprises the following steps of: splitting the DL-cysteine to produce D-cysteine and L-tryptophane through an enzymatic reaction by using fermentation liquor of recombined Bacillus subtillis which efficiently express tryptophanase as an enzyme source and using the DL-cysteine and indole as a substrate; and oxidizing the enzymatic reaction liquor to ensure that the D-cysteine is oxidized into D-cystine, then regulating pH to be 5 and performing isoelectric point crystallization to separate the D-cystine out, and collecting the precipitation to obtain the D-cystine. A method for purifying the L-tryptophane comprises the following steps of: removing the residual indole from the supernatant which is subjected to the isoelectric point crystallization by adopting an S-8 type macroporous resin, then absorbing the L-tryptophane in the supernatant by adopting an NKA-II type macroporous resin, eluting by using 50 percent ethanol, reducing pressure, concentrating and drying to obtain the L-tryptophane. The invention provides a novel process route of green production of the D-cystine and the L-tryptophane.

The invention discloses low-melting-point metal powder as well as a preparation method and application thereof. The preparation method comprises the following steps that after low-melting-point metaland a dispersing agent are heated and melted under an oxygen-free condition, ultrasonic oscillation is conducted to obtain a mixed solution, ultrasonic atomization treatment is conducted on the mixedsolution, and quenching is conducted and then the low-melting-point metal powder is obtained; the prepared low-melting-point metal powder can be applied to silk-screen printing, 3D printing and low-melting-point metal electronic pulped raw materials. The metal powder prepared by the preparation method is fine in particle size, good in sphericity, low in cost and prone to popularize the industrialproduction; the metal powder prepared by the preparation method is suitable for traditional printing methods such as the silk-screen printing, can be widely applied to the fields of novel printing ofthe 3D printing, can be widely applied to the fields of preparation of various low-melting-point metal electronic pulped raw materials, the field of phase change materials and even the field of biological medical treatment, so that the application range of the low-melting-point metal is greatly expanded, and the industrial value of the metal powder and the application is remarkable.

PROBLEM TO BE SOLVED: To provide a glass composition which is used for forming a dielectric body or a partition wall of a plasma display panel, a fluorescent indicator tube or a field emission display, does not contain harmful matters and causes little environmental load, and to provide a glass paste composition which can greatly reduce the warping of the substrate by using this glass composition. ŽSOLUTION: The glass composition is one that does not substantially contain Pb and Bi and has a glass transition point of 430°C-540°C, and it is characterized by containing 1-15 mol% of SiO<SB>2</SB>, 10-50 mol% of B<SB>2</SB>O<SB>3</SB>, 30-50 mol% of ZnO, 0-12 mol% of an oxide of an alkali metal:R<SB>2</SB>O (in the formula, R exhibits at least one alkali metal selected from among K, Na and Li), and 3-20 mol% of BaO in terms of oxides. Ž

The invention discloses a method for producing molten salt-grade sodium nitrate, wherein the method comprises the following steps: step S1, a neutralization process: neutralizing a sodium carbonate solution and a nitric acid solution to form a first sodium nitrate raw material solution with the pH value of 3.5-4.5 and the mass percentage concentration of 23-28%; step S2, a carbon dioxide removal process: removing carbon dioxide in the first sodium nitrate raw material solution to form a second sodium nitrate raw material solution; step S3, an evaporation process: carrying out evaporation concentration on the second sodium nitrate raw material solution to obtain a third sodium nitrate raw material solution with the mass percentage concentration of 63-67%; step S4, a crystallization dehydration process: crystallizing and dehydrating the third sodium nitrate raw material solution to prepare a solid sodium nitrate raw material; and step S5, a drying process: drying the solid sodium nitrate raw material, to prepare the final product molten salt-grade sodium nitrate. The method can directly produce the high-purity molten salt-grade sodium nitrate, is simple and easy to control, can realize automatic production, and is suitable for safe, continuous, stable and rapid production of the high-purity sodium nitrate.

The invention discloses a manganese-cobalt spinel catalyst and a preparation method thereof. The manganese-cobalt spinel catalyst adopts manganese-cobalt spinel as an active component and microporousceramic as a carrier. The manganese-cobalt spinel catalyst not only has excellent mechanical strength, high-temperature resistance, alkali corrosion resistance and good storage stability, but also hasgood catalytic activity in oxygen reduction catalysis.

The present invention provides a liquid crystalline polyester resin composition suitable for an optical pickup unit. The composition comprises a liquid crystalline polyester, a mica and a hollow filler. Using the liquid crystalline polyester resin composition, an optical pickup unit with a high soldering resistance and a high torsional elastic modulus can be produced while suppressing breakage of the hollow filler in the composition.

The invention discloses an aryl substituted pyridylamine iron-based catalyst and a preparation method and application thereof, and relates to the technical field of catalytic polymerization of conjugated diene. The iron-based catalyst comprises a main catalyst body and an auxiliary catalyst body, wherein the main catalyst body is an aryl substituted pyridylamine iron complex, the auxiliary catalyst body is methylaluminoxane or aluminum alkyl, and the molar ratio of the auxiliary catalyst body to the main catalyst body ranges from 100:1 to 2000:1. An iron-based catalyst system has high activityin isoprene polymerization, and an obtained polymer is high in molecular weight and narrow in molecular weight distribution. Meanwhile, the microstructure of the polymer can be controlled by adjusting the structure of the main catalyst body, and the reaction activity depends on main catalyst bodies with different substituent groups and different types of auxiliary catalyst bodies.

An aqueous surface treatment composition for coated steel sheet securing sufficient working adhesion while causing the formation of a surface treatment layer imparting excellent overhang corrosion resistance even without containing chrome, that is, a surface treatment composition containing a specific organic silicon compound, hexafluorometallic acid, a urethane resin having specific cationic groups, a vanadium compound, and an aqueous medium and sufficiently securing working adhesion while imparting excellent overhang corrosion resistance by the urethane resin having cationic groups and a total amine value of specific values is provided.

The invention discloses a tridentate pyridyl imide iron-based catalyst and a preparation method and application thereof, and relates to the technical field of conjugated diene catalytic polymerization. The iron-based catalyst consists of a main catalyst and a cocatalyst, the main catalyst is a tridentate pyridyl imide iron complex, and the cocatalyst is a methyl aluminoxane or alkyl aluminum. Theabove-mentioned iron catalytic system exhibits relatively high activity in isoprene polymerization, the obtained polymer has high molecular weight and relatively narrow molecular weight distribution,the micro-structure of the polymer can be controlled by adjusting the structure of the main catalyst, and the activity of the reaction depends on the main catalyst of different substituents and different kinds of the co-catalysts.

The invention provides a preparation method for a black abrasion-resistant micro-arc oxidization ceramic layer of a magnesium alloy. The magnesium alloy is dipped into electrolyte to be subjected to micro-arc oxidization so that the black abrasion-resistant micro-arc oxidization ceramic layer can be prepared; the electrolyte comprises 5-20 g/L of sodium silicate, 5-15 g/L of potassium fluoride, 1-60 g/L of potassium hydroxide, 5-25 g/L of triethanolamine, 2-6 g/L of ammonium meta-vanadate, 2-6 g/L of sodium orthovanadate, 2-10 g/L of nanometer SiC and 2-5 g/L of nanometer graphite. The black abrasion-resistant ceramic layer of the magnesium alloy can reach the level 9 according to 350 h of a neutral salt spray test, the Vickers hardness HV can reach 553-605, the friction coefficient is 0.08-0.14, the abrasion rate is 0.006-0.009 mg/min, the beneficial effects that stability is good, color is uniform and color fading is not prone to occurrence are all achieved, and the black abrasion-resistant micro-arc oxidization ceramic layer of the magnesium alloy is very suitable for preparing an optical collimator and other systems. The preparation method for the black abrasion-resistant micro-arc oxidization ceramic layer of the magnesium alloy is simple in technological process, convenient to operate, small in pollution and remarkable in industrial value.