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195results about How to "The process is simple and mature" patented technology

Method for extracting heavy liquefaction oil and intermediate-phase bitumen matter from coal liquefaction residuals and application thereof

The invention provides a method for extracting heavy liquefaction oil and an intermediate-phase bitumen matter from coal liquefaction residuals and application thereof. The method comprises the following steps of: adding coal liquefaction residual powder and an extraction solvent to a stirring kettle together for extraction to obtain extraction liquid and extraction residues; carrying out solid-liquid separation on the obtained extraction liquid and extraction residues; carrying out steam stripping on the obtained extraction residues, and recovering an organic phase after oil-water separation; mixing the extraction liquid with the organic phase, and then delivering into a solvent recovery unit; recovering the extraction solvent for recycling use or being returned to a liquefaction productprocessing unit by using a distillation method and/or an evaporation method, wherein residuals obtained after the extraction solvent is recovered are liquefaction residual extractives; delivering theobtained liquefaction residual extractives into a heat treatment unit, and separating the heavy liquefaction oil from the intermediate-phase bitumen matter by using a heating dry distillation method;and adding the obtained heavy liquefaction oil and other recycling solvents in a direct liquefaction process to a coal liquefaction solvent hydrogenation unit together.
Owner:CHNA ENERGY INVESTMENT CORP LTD +2

High-damping and high-strength Mg-Cu-Mn-Zn-Y alloy and manufacturing method thereof

The invention relates to high-damping and high-strength Mg-Cu-Mn-Zn-Y alloy and a manufacturing method thereof. The high-damping and high-strength Mg-Cu-Mn-Zn-Y alloy is characterized by comprising the following alloying element components distributed in the alloy and the content value thereof in percent by weight: 1.0%-4.0% of Cu, 0.3%-1.5% of Mn, 0.3%-4.0% of Y, 1.0%-5.5% of Zn and the balance of magnesium. In order to solve the conflict of the damping property and the mechanical property of the magnesium alloy, the invention puts forward the fact that a Zn element and a Y element are added in the high-damping Mg-Cu-Mn alloy so that the Mg, the Zn and the Y form quasicrystals and / or long-prepared phases in the alloy, the quasicrystals or the long-prepared phases can introduce a great amount of new movable dislocations in a magnesium matrix, the damping property of the magnesium alloy is improved through movable dislocations newly increased in the magnesium matrix, and then the conventional heat extrusion is carried out on the alloy so that the mechanical property of the alloy is improved. The invention has the advantages of simple process, strong transportability, easy operation and lower cost and solves the problem that the Mg alloy has limited application due to high damping property and low mechanical property, and the used equipment is conventional and general equipment.
Owner:CHONGQING UNIV

Ultrahigh-glowing filament temperature and flame-retardant reinforced PBT (polybutylece terephthalate) composite material and preparation method thereof

The invention relates to a macromolecular material and a preparation method thereof, in particular to a PBT (polybutylece terephthalate) composite material and a preparation method thereof. The PBT composite material comprises the following components in percentage by weight: 20-25 percent of polybutylene terephthalate, 6-20 percent of bromine containing flame retardant, 5-15 percent of phosphorus and nitrogen containing flame retardant, 5-15 percent of inorganic flame retardant, 20-40 percent of glass fiber, 2-8 percent of toughening agent, 0.2-0.4 percent of antioxidant and 0.3-2 percent of lubricating dispersant. The preparation method comprises the following steps of weighing the components in the percentage by weight; putting plastic and adjuvant into a high-speed mixing machine, mixing the plastic and the adjuvant for 2-5 minutes and discharging a mixture; controlling a double-screw extruder to extrude and granulate the mixture; and adding glass fiber in the extruding process to obtain the PBT composite material. The flame-retardant property and the strength of the PBT composite material are obviously improved; using requirements of more occasions can be met; the PBT composite material has high application value and good market prospect; and the used raw materials are the conventional products in the field of engineering plastics and are low in cost.
Owner:中山市纳普工程塑料有限公司

Dielectric nano-brick array structure and application thereof as high-reflection film and high-permeability film

InactiveCN107664780AImprove work efficiencyGood angular bandwidthOptical elementsDielectricBrick
The invention discloses a dielectric nano-brick array structure and the application thereof as a high-reflection film and a high-permeability film. The dielectric nano-brick array structure comprisesa substrate and a dielectric nano-brick array on the substrate. The dielectric nano-brick array is formed by periodically arranging dielectric nano-bricks and the dielectric nano-bricks are in a regular quadrangular prism shape. The bottom surfaces of the dielectric nano-bricks are square, wherein the length, the width and the height of the dielectric nano-bricks are sized in sub-wavelength scale.When the dielectric nano-brick array structure is used as a high-reflectivity film, the structural parameters of the dielectric nano-brick array structure are optimized. In this way, the Mie resonance can be generated when the s-wave and the p-wave are incident at a working wavelength. When the dielectric nano-brick array structure is used as a high-permeability film, the structural parameters ofthe dielectric nanometer brick array structure are optimized. In this way, the equivalent refractive index of a mixed layer is between the refractive index of a medium around the mixed layer and therefractive index of the substrate. According to the technical scheme of the invention, the high-reflection film and the high-permeability film, based on the dielectric nano-brick array structure, arehigh in working efficiency in the whole communication wave band.
Owner:WUHAN UNIV

Nanometer silicon dioxide modified sulphonate oil-displacing agent and preparation method thereof

The invention provides a nanometer silicon dioxide modified sulfonate oil-displacing agent and a preparation method thereof, which belong to synthesis of a chemical oil-displacing agent in tertiary recovery by a simple and convenient and easily industrialized method. The method comprises the following steps that: firstly, naphthene base crude oil is sulfonated and neutralized at a temperature of between 10 and 80 DEG C to obtain sulfonate; secondly, the sulfonate is subjected to graft modification by nano-grade silicon dioxide; and finally, the nanometer modified sulfonate oil-displacing agent is obtained. The nanometer silicon dioxide modified sulfonate oil-displacing agent comprises 60 to 90 portions of naphthene base sulfonate and 10 to 40 portions of nanometer silicon dioxide by mass portion. The oil-displacing agent can be used for an oil-displacing experiment; when mass fraction of dosage of the oil-displacing agent is 0.3, the oil-displacing agent can reduce the tensile force of oil-water boundary to 5*10mN.m to effectively reduce adhesive force of residual oil, so that the residual oil is easy to deform and separate; meanwhile, the capillary resistance is reduced, so that the residual oil drop is easy to aggregate to form an oil wall and the oil recovery efficiency is improved. The oil-displacing agent has low price, simple synthesis process and convenient popularization and application.
Owner:SINOPEC PETROLEUM ENG DESIGN

Plastic working technique for increasing damping performance of high-strength wrought magnesium alloys

The invention provides a plastic working process for improving the damping property of a high-strength wrought magnesium alloy. The plastic working process includes the following steps: plastic deformation by extrusion: a magnesium alloy ingot is extruded on an extruder, the technical parameters are that the extrusion temperature is 350-400 DEG C, the extrusion ratio is 9-15, the extrusion speed is 2-8m/min and the speed is constant; upsetting type forging treatment: the wrought magnesium alloy treated by extrusion and plastic deformation is upset after keeping the temperature of 380-400 DEG C for 1-2 hours, the temperature of the magnesium alloy ingot at upsetting is 315-375 DEG C, the upset rate is 30%-40%, and the strain rate of upsetting is 0.001-0.01/s. The plastic working process of the invention can greatly improve the damping property of the high strength wrought magnesium alloy and guarantee good mechanical property simultaneously, and successfully solves the contradiction between the strength and the damping property of the magnesium alloy. The wrought magnesium alloy treated by the plastic working process has wide application fields, and can satisfy the actual requirement for high-strength, high-damping and light-weight materials in the fields of high speed train, automobile, aeronautics and astronautics, national defense, military industry, etc. In addition, the process equipment used in the plastic working process is the conventional universal equipment which is low in cost.
Owner:CHONGQING UNIV

Bonded wafer with thermal stress relief structure and laser scribing process

The invention discloses a bonded wafer with a thermal stress release structure. The bonded wafer comprises a glass wafer and a silicon wafer which are jointed with each other; a thermal stress release structure for laser scribing is arranged at the position close to a bonding contact surface of the bonded wafer; the thermal stress release structure is correspondingly arranged along a drafted laser scribing track; the stress release structure of the bonded wafer provided by the invention can prevent an original bonding region close to the scribing track from cracking, improve the laser scribing yield of the bonded wafer and reduce the scribing cost. The invention further discloses a laser scribing process; the laser scribing process comprises a thermal stress release structure process step, bonding wafer and laser scribing processing steps and the like; the laser scribing process can effectively release the thermal stress in the process of laser scribing so as to inhibit a thermal crack on a bonding contact surface, the mechanical property of the bonding contact surface is greatly improved, which is beneficial to the improvement of the MEMS (micro-electromechanical system) chip property; meanwhile, the process is simple and mature and can guarantee lower cost and higher yield.
Owner:NAT UNIV OF DEFENSE TECH

Semiconductor device and manufacturing method thereof, and electronic apparatus

The invention provides a semiconductor device and a manufacturing method thereof, and an electronic apparatus. The manufacturing method comprises the following steps of providing a device wafer and forming a first bonding interface layer on a right side of the device wafer; providing a support wafer and forming a second bonding interface layer on a surface of the support wafer, wherein the support wafer executes hydrogen ion implantation; forming a hydrogen ion implantation layer in an area, wherein a predetermined depth is arranged between the area and the second bonding interface layer; carrying out a bonding technology and making the first bonding interface layer of the device wafer be connected to the second bonding interface layer of the support wafer; carrying out thinning on a back side of the device wafer; executing annealing processing and realizing hydrogen embrittlement fragmentation de-bonding so as to peel most of the support wafer; and removing the residual support wafer. According to the manufacturing method in the invention, other bonding mediums are not needed; cost is low and efficiency is high; the process is mature and simple; by using a de-bonding method, uniformity is good; other tools are not needed; the process is simple and the operability is high.
Owner:SEMICON MFG INT (SHANGHAI) CORP

High-damping and high-strength Mg-Cu-Mn-Zn-Y alloy and manufacturing method thereof

The invention relates to high-damping and high-strength Mg-Cu-Mn-Zn-Y alloy and a manufacturing method thereof. The high-damping and high-strength Mg-Cu-Mn-Zn-Y alloy is characterized by comprising the following alloying element components distributed in the alloy and the content value thereof in percent by weight: 1.0%-4.0% of Cu, 0.3%-1.5% of Mn, 0.3%-4.0% of Y, 1.0%-5.5% of Zn and the balance of magnesium. In order to solve the conflict of the damping property and the mechanical property of the magnesium alloy, the invention puts forward the fact that a Zn element and a Y element are addedin the high-damping Mg-Cu-Mn alloy so that the Mg, the Zn and the Y form quasicrystals and / or long-prepared phases in the alloy, the quasicrystals or the long-prepared phases can introduce a great amount of new movable dislocations in a magnesium matrix, the damping property of the magnesium alloy is improved through movable dislocations newly increased in the magnesium matrix, and then the conventional heat extrusion is carried out on the alloy so that the mechanical property of the alloy is improved. The invention has the advantages of simple process, strong transportability, easy operationand lower cost and solves the problem that the Mg alloy has limited application due to high damping property and low mechanical property, and the used equipment is conventional and general equipment.
Owner:CHONGQING UNIV

Method for extracting tungsten, titanium and vanadium from waste SCR (selective catalytic reduction) catalyst

The invention discloses a method for extracting tungsten, titanium and vanadium from a waste SCR (selective catalytic reduction) catalyst, which comprises the following steps: crushing the waste SCR catalyst, adding a strongly alkaline solution, and reacting; filtering, separating, then adding strong acid into the sodium tungstate and sodium vanadate mixed solution, and reacting to obtain tungstic acid and a sodium salt and vanadic acid mixed solution; regulating the pH value of the sodium salt and vanadic acid mixed solution until precipitate is separated out, thus obtaining ammonium vanadate; then adding sulfuric acid into the tungsten-and-vanadium-removed SCR catalyst, and reacting to obtain a titanyl sulfate solution and solids such as aluminum slag and the like; then adding water into the titanyl sulfate solution, and hydrolyzing to obtain titanic acid and a waste acid solution; and finally, respectively calcining the obtained ammonium vanadate, tungstic acid and titanic acid to obtain vanadium pentoxide, tungsten trioxide and titanium dioxide. According to the invention, tungsten, titanium and vanadium can be extracted from the SCR catalyst through the reaction with strong alkali and strong acid at a low temperature, the equipment requirement is low, the energy consumption is low, some products having added values can be coproduced, and no secondary pollution is generated, thereby facilitating popularization and application.
Owner:成都新智金森环保科技有限公司

Water-based fireproof coating suitable for railway vehicle chassis and preparation method thereof

The invention relates to a water-based fireproof coating suitable for railway vehicle chassis and a preparation method thereof, and belongs to the field of water-based fireproof coating. The water-based fireproof coating disclosed by the invention is prepared from the following substances in parts by mass: 20-30 parts of a film-forming substance, 40-60 parts of an intumescent flame-retardant system, 5-8 parts of titanium dioxide, 2-4 parts of nano magnesium aluminum hydroxide, 1-2 parts of organic bentonite, 1-3 parts of expandable graphite, 9-17 parts of deionized water, 0.8-1.3 parts of a film-forming aid, 0.2-0.5 part of a dispersing agent and 0.2-0.5 part of a defoaming agent; the intumescent flame-retardant system is prepared from melamine phosphate, dipentaerythritol and melamine, and the mass part ratio of the melamine phosphate to the dipentaerythritol to the melamine is 1.8-2.3: 0.8-1.2: 0.8-1.2. The water-based fireproof coating can met structure fire-resistant requirement of the chassis of the railway vehicles; no volatilization of harmful substances such as organic solvents is caused in the construction and drying processes; the occupational health and safety of constructors are guaranteed; equipment can be flexibly selected for use according to different scenes; investment of special equipment is reduced; and production cost is reduced.
Owner:河北萨迪科轨道交通科技有限公司

Method for manufacturing three-dimensional package heat dissipation structure of rigid-flexible joint board

The invention discloses a method for manufacturing a three-dimensional package heat dissipation structure of a rigid-flexible joint board. The method comprises the steps that a flexible substrate is manufactured; a bottom substrate and two rigid substrates are pressed on the flexible substrate; cavities are formed in the two rigid substrates in a dug mode respectively; two copper substrates fixedly adhere to the back surfaces of the two rigid substrates respectively; a bottom chip is welded to the bottom substrate, two top chips are welded to or adhere to the two copper substrates which are exposed because the cavities are formed in the rigid substrates in the dug mode, and the two top chips are bonded to the rigid substrates; the flexible substrate is bent, the two rigid substrates on two sides of the flexible substrate are arranged above the bottom chip of the bottom substrate, and filling of plastic package material is conducted to achieve fixing and forming; solder paste is welded to a bonding pad on the back surface of the bottom substrate in a brushed mode, a BGA ball is implanted in a steel net, backflow is conducted, and a package body is formed; the back surface of the bottom substrate is fixed on a PCB, and radiators are arranged on the two copper substrates. By means of the method, the number of heat dissipation routes of the package body is increased, and heat can be dissipated more effectively.
Owner:NAT CENT FOR ADVANCED PACKAGING
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