41results about How to "High volume concentration" patented technology

The invention discloses a hexafluoroethane purification method which comprises the following steps: rectifying a hexafluoroethane raw material under the conditions of (-70)-(-35) DEG C and 0.1-1 MPa; performing low-temperature adsorption on the rectified hexafluoroethane raw material under the temperature conditions of (-100)-(-70) DEG C; and performing pressurized adsorption on the hexafluoroethane raw material after low-temperature adsorption under the pressure conditions of 0.5-1.5 MPa, thus obtaining the hexafluoroethane product, wherein the CO2 volume concentration of the hexafluoroethane product is no more than 0.5 ppm, and the H2O volume concentration is no more than 1 ppm. According to the invention, the problem that potential safety hazard is caused due to insufficient CO2 and H2O removal depth and introduction of anhydrous HCl in hexafluoroethane is solved, the energy consumption is reduced, and the adsorption effect of adsorbent is enhanced; and the purity of the hexafluoroethane product is up to 99.9995% or above, thus meeting the requirements for electronic specific gas in the semiconductor and micro-electronics industry.

The invention discloses an octafluoropropane purifying method. The octafluoropropane purifying method comprises the following steps: carrying out normal-temperature adsorption on an octafluoropropane material under a normal-temperature condition; carrying out distillation on the octafluoropropane material adsorbed at the normal temperature under conditions with the temperature of -37 DEG C-10 DEG C and pressure of 0.1 MPa-0.6 MPa; carrying out low-temperature adsorption on the distilled octafluoropropane material at the temperature ranging from-100 DEG C to -30 DEG C; carrying out pressurized adsorption on the low-temperature adsorbed octafluoropropane material under the pressure condition of 0.5 MPa-1.5 MPa to obtain an octafluoropropane product. The octafluoropropane purifying method disclosed by the invention is adopted, so that not only most of fluorine-chlorine-carbon compound-containing impurities are removed, but also a problem that removing depth for carbon dioxide and carbon in the prior art is not enough is solved, thus energy consumption is lowered, adsorption effect of an adsorbent is strengthened and the purity of the octafluoropropane product is over 99.999%.

The invention discloses one-component salt fog resistant water paint and a preparation method thereof. The water paint includes the following raw materials in parts by weight: 20-46 parts of EPMC, 5-18 parts of special EPMC, 20-40 parts of anti-rust pigment, 13-30 parts of deionized water, 2-10 parts of an environment-friendly additive. The product is excellent in performance: the hardness is greater than or equal to H, the adhesive force is of 0-1 level, and the salt fog resistant duration is longer than 800 hours; the paint is environment-friendly and wide in application range.

The invention provides a chromium/diamond composite clad layer, the preparation method comprising the steps of: depositing a layer of chromium on surface of a work-piece by electroplating, and then depositing a layer of chromium/diamond composite clad layer, finally depositing a chromium back-up coat. The chromium/diamond composite clad layer produced by the method has 1 to 1.5um of chrome plating thickness of the under-plate; the total chrome plating thickness of the sad-feeding plate and the back-up plate is 80% to 90% of the diamond grains; the chromium/diamond composite clad layer has high volume concentration, which is dispersed evenly without crack on the surface, so as to prevent graphite catalytic element in the work-piece, such as Fe, Ni, Co, etc spreading to diamond interface; the chromium/diamond composite clad layer can be adopted as clad layer of CVD diamond; the deposited CVD diamond film is provided with mosaic structured interface, so as to greatly improve CVD diamond film/foundation interface bonding force.

A sacrificial anticorrosion water epoxy paint composition contains water-dispersive basic epoxy resin, multi-metal alloy powder, water-soluble solidifying agent prepared from polyamine and polyol, and rheologic nano assistant. Its advantages are high stability, excellent anticorrosion and mechanical performance of its film, and no release of harmful gas.

Processing specimens in an automated histological staining system comprising robotically moving a slide carrier into a stainer of the system, the slide carrier carrying slides which respectively carry the specimens, and the specimens being at least partially embedded in paraffin. Liquids are automatically dispensed onto the slides according to a predetermined recipe for at least deparaffinizing, staining, and counterstaining the specimens. The slide carrier can be robotically moved out of the stainer after automatically dispensing the liquids. In some embodiments, a total of all liquid dispensed onto the slides after moving the slide carrier into the stainer and before moving the slide carrier out of the stainer has a greater volumetric concentration of polyol than of monohydric alcohol.

Methods and system capable of processing specimens carried by slides within an automated histological staining system. A slide carrier is moved toward and into a temperature-controlled internal environment of a stainer within the system. The slide carrier carries a first slide and a second slide, and the first and second slides can carry a first specimen and a second specimen, respectively. The first and second specimens are stained with at least one of a staining reagent and a counterstaining reagent while the first and second slides are within the internal environment and while an average temperature of the internal environment is greater than ambient temperature. The slide carrier can be moved out of the internal environment after staining one or both specimens.

The invention relates to the technical field of touch screens, and especially relates to anti-wear fingerprint-proofing film-coated glass used for a touch screen and a preparation method thereof. The film-coated glass includes a thin glass sheet and a protective film tightly attached thereto. The protective film includes a composite thin film, which is directly attached to the thin glass sheet, and a SiO2 film, which is formed on the composite thin film. The composite thin film contains silver-carrying nano TiO2; the surface of the SiO2 film has an uneven micro-structure; the protective film is formed by uniformly spray-coating the surface of the thin glass sheet with a composite coating liquid to form the composite thin film after solidification and then spray-coating the composite thin film with a SiO2 coating liquid to form the SiO2 film after solidification. The composite coating liquid is prepared with ethanol as a main solvent, wherein the silver-carrying nano TiO2 particles and SiO2 gel are dispersed in the composite coating liquid according to the mass ratio of 1:2. The method is easy and controllable. The film-coated glass is wear-resistant and is durable, has self-cleaning effect, has fingerprint-proofing and anti-reflection effects and is suitable for the technical field of touch screens.

The invention provides a method and device for producing black copper by sludge containing copper. The method comprises the following steps that S1, the sludge containing copper is dewatered to the water content of 10-40wt% to form dewatered sludge; S2, the dewatered sludge is mixed with a fusing agent to be subjected to bottom blowing oxidation smelting in a full-slag smelting pool to form oxidizing smelting slag; S3, the oxidizing smelting slag is subjected to side blowing reduction smelting in a reduction smelting pool to obtain a reduced smelting product; and S4, the reduced smelting product is subjected to sedimentation treatment to obtain the black copper and furnace slag. According to the method and device for producing the black copper by the sludge containing copper, the sludge containing copper is treated by using the technology, the problems of long process, high tailing copper content, high sulfur content and the like when the copper is recycled from the sludge containing copper in the prior art are effectively solved, and the recovery rate of valuable metal is improved.

The invention relates to the technical field of display glass, especially to antifouling anti-dazzle display glass and a preparation method thereof. The display glass contains a transparent glass substrate and an antifouling anti-dazzle film which is formed after an antifouling AG solution is sprayed onto the surface of the transparent glass substrate and solidified. The surface of the antifoulinganti-dazzle film has an uneven microstructure. The antifouling AG solution contains 3-8% of nano-TiO2/SiO2, 80-86% of ethanol and 6-12% of petroleum ether. The nano-TiO2/SiO2 is a core-shell hollow structured spherical nanoparticle with TiO2 as the core and porous SiO2 as the shell, and there is a 2nm-3nm nano-space layer between the core and the shell. The preparation method comprises steps as follows: preparation of nano-TiO2/SiO2, preparation of the antifouling AG solution, and spraying and solidification for film formation. According to the preparation method, the antifouling AG solutionis sprayed onto the transparent glass substrate and solidified to form the antifouling anti-dazzle film which is not easy to fall off, and then the antifouling anti-dazzle display glass which is durable in use and has excellent wear resistance is prepared.

The invention discloses a production method of nano calcium carbonate, and belongs to the technical field of calcium carbonate manufacturing. The production method comprises the steps of calcination, digestion, size mixing, carbonization, coating, filtration and drying. In the calcination process, CO2 in kiln gas is separated and is liquefied and canned to obtain a CO2 output tank; the carbonization process comprises first carbonization, screening and second carbonization; the first carbonization is conducted in a first carbonization tank, CO2 is input through the CO2 output tank, compared with traditional kiln gas input, the concentration of CO2 in the first carbonization tank is increased, and the reaction cycle is shortened; through the arrangement of a first circulation pipeline in the first carbonization tank, a fine slurry in a first inner cavity is in sufficient contact with CO2, and the reaction cycle is further shortened; the second carbonization is conducted in a second carbonization tank, and the structure of the second carbonization tank is the same as that of the first carbonization tank. The production method of nano calcium carbonate solves the problem that the product is wide in particle size distribution and long in production cycle in a traditional nano calcium carbonate manufacturing technology.

The embodiment of the invention provides a magnetic suspension volume concentration detection method and detection system and a magnetic powder flaw detection system. According to the specific implementation scheme, the detection system comprises a magnetic suspension loading container, a magnetic device, a control device and a detection device; the control device is detachably connected with the magnetic suspension loading container; the magnetic device is positioned below the bottom of the magnetic suspension loading container; the control device is used for controlling the magnetic suspension loading container to obtain a to-be-detected magnetic suspension with a preset volume from the magnetic particle flaw detector; the magnetic suspension loading container is used for loading the to-be-detected magnetic suspension; the magnetic device is used for adsorbing magnetic powder in the to-be-detected magnetic suspension to the bottom of the magnetic suspension loading container within preset time; and the detection device is used for acquiring volume data of the magnetic powder in the magnetic suspension loading container and volume data of the to-be-detected magnetic suspension, and calculating the volume concentration of the magnetic suspension. The detection system provided by the embodiment of the invention improves the efficiency of detecting the volume concentration of the magnetic suspension.

The invention provides a device and method for collecting nitrogen gas from cyclohexane oxidized tail gas. The device comprises a variable temperature adsorption device, a middle mixer, a heating device, a catalytic oxidation device and a variable pressure adsorption device which are connected in series sequentially through pipelines, wherein the variable temperature adsorption device is provided with a variable temperature adsorption agent layer; the middle mixer is provided with an air inlet connected with a compressed air source; the variable pressure adsorption device is provided with a variable pressure adsorption agent layer; the variable temperature adsorption device comprises a variable temperature adsorber which is provided with a variable temperature adsorption gas outlet and an oxidized tail gas inlet communicating with an inner cavity; the catalytic oxidation device comprises a catalytic oxygenizer provided with a catalyst bed layer; the catalytic oxygenizer is provided with a catalytic oxidation gas outlet and a variable temperature adsorption gas inlet communicating with the inner cavity of the catalytic oxygenizer; the variable temperature adsorption device comprises a variable temperature adsorber which is provided with a purified gas outlet and a catalytic oxidation gas inlet communicating with the inner cavity. The device and the method have the advantages that the nitrogen gas with the volume concentration being 99.9 percent or higher can be obtained; materials can be recovered; the consumption of public works is also reduced; meanwhile, the flare gas emission quantity is reduced.

The invention belongs to the technical field of metallurgy and particularly relates to a smelting method for decreasing the blockage probability of a high-aluminum molten steel gap. The smelting method comprises the steps that scrap molten iron and steel is loaded into a converter; a converter blowing process is conducted, specifically, in the converter blowing process, the carbon content at the end point of the converter is controlled to be 0.01%-0.07%, and the oxygen activity at the end point of the converter is controlled to be 400-1000 ppm; RH deep decarbonization treatment is conducted, specifically, in an RH deep decarbonization treatment process, the oxygen activity before deoxidation is reserved to be 300-1000 ppm; a continuous casting process is conducted; and tapping and slag pouring are conducted. According to the smelting method, the phenomenon of blockage of the high-aluminum molten steel gap is avoided by controlling the oxygen activity of the converter blowing process, ladle slag does not need to be modified, the cost is saved, inclusion modifiers such as calcium modifiers or rare earth modifiers do not need to be added into the molten steel, thus on the one hand, the cost is saved, on the other hand, the situation that molten steel gap nodulation is aggravated due to mismatching of the dosage of the inclusion modifiers and molten steel compositions is avoided, and the process effect is more stable.

The invention provides a heat-insulation cooling type water-based mixed paint and a preparation method thereof. The heat-insulation cooling type water-based mixed paint is prepared from the followingraw materials in parts by weight: 50-60 parts of heat-insulating acrylic emulsion, 3-8 parts of polyvinyl acetate emulsion, 15-20 parts of micron-sized titanium dioxide, 3-5 parts of superfine bariumsulfate, 1-3 parts of wet sericite powder, 2-3 parts of a dispersing agent, 0.2-0.6 part of a defoaming agent, 1-1.5 parts of a flash-rust inhibitor, 0.1-0.2 part of a pH regulator, 0.2-0.5 part of abase material wetting agent, 1.5-3 parts of dipropylene glycol butyl ether, 1.5-3 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 1-2 parts of propylene glycol, 0.5-0.9 part of a shaking auxiliary agent and 2-5 parts of water; wherein the particle size of the micron-sized titanium dioxide is 1.58 [mu]m. The heat-insulation cooling type water-based mixed paint has the advantages of good heat-insulating and cooling effects, low VOC, environmental friendliness and the like, is suitable for the surface of an outdoor metal material, and plays a role in protection and cooling.

The invention relates to a low-nitrogen combustion process of a circulating fluidized combustion boiler. Coal water slurry is fed into a boiler furnace of the circulating fluidized combustion boiler to be used as fuel, staged combustion of the fuel is conducted, primary air is fed from the bottom of the boiler furnace, secondary air is fed from the side wall of the boiler furnace, high-temperatureflue gas in the furnace is subjected to solid-gas separation before entering a flue, and solid particles obtained through separation are returned into the boiler furnace for circulation combustion. The modes of coal water slurry combustion, staged combustion and solid particle circulation combustion are comprehensively adopted, the combustion efficiency of the boiler can be improved, and nitrogenoxides generated by the combustion process can be reduced.