52 results about "Gas phase" patented technology

An intraluminal device is provided with a porous structure. The porous structure may be loaded with a bioactive substance to treat surrounding tissues after the intraluminal device has been implanted. The porous structure may be made by depositing a metal film on a foam structure using chemical vapor deposition. Porous structures may also be made by sintering or applying a ceramic layer to the intraluminal device. An intraluminal device is also provided with a ceramic material applied to generally straight portions of the device structure but not to portions adapted to bend. One advantage is that the ceramic material is less likely to fracture since it is applied to regions that experience less strain.

A method for growing a crystal of an Al-containing III-V group compound semiconductor by the conventional HVPE method, characterized in that it comprises a step of reacting Al with hydrogen halide at a temperature of 700° C. or lower to form a halide of Al. The method has allowed the suppression of the formation of aluminum chloride (AlCl) or aluminum bromide (AlBr) reacting violently with quartz, which is the material of a reaction vessel for the growth, resulting in the achievement of the vapor phase growth of an Al-containing III-V group compound semiconductor at a rate of 100 microns/hr or more, which has lead to the mass-production of a substrate and a semiconductor element having satisfactory resistance to adverse environment.

The invention discloses a serum specificity metabolite spectrum for a patient with a lung cancer and a building method thereof, and particularly discloses a method for carrying out liquid-phase/gas-phase chromatography mass spectrometry metabonomics analysis based on the patient suffering from the lung cancer. The method comprises the following steps: collecting fasting blood samples of a healthy and normal detected person and the patient suffering from the lung cancer 7 days before and after an operation, separating by a chromatogram column after processing; extracting and aligning original data of an instrument after adopting mass spectrometry analysis; building a mathematical model to analyze the metabolites spectrum by adopting multivariable data statistical software; comparing with the difference between an average person with the metabolites spectrum of the patient with the lung cancer, so as to determine the specificity metabolite spectrum. By adopting the method disclosed by the invention, the mutation status of the metabolite of the patient with the lung cancer can be generally and comprehensively reflected, and the serum specificity metabolite spectrum can be applied to early diagnosis of the lung cancer or a beneficial technical support is supplied for prognosis.

The invention discloses a method for separating low-carbon olefin gas. The method is used for overcoming the disadvantages in existing low-carbon olefin separation methods that cryogenic separation is complicated in process flow, large in investment and the like. The method comprises the following steps: the low-carbon olefin gas enters a deethanization tower after the low-carbon olefin gas is compressed and dried, a tower bottom material flow of the deethanization tower is conveyed to a depropanization and propylene distillation system so as to separate polymer-grade propylene products, and a tower top material flow of the deethanization tower enters a demethanization tower; and a tower bottom material flow of the demethanization tower is conveyed to an acetylene converter and an ethylene distillation tower, a tower top material flow of the demethanization tower is conveyed to an absorption tower and is in contact with an absorbent, a tower top gaseous-phase material flow of the absorption tower is output or enters a fuel gas system, and a tower bottom material flow of the absorption tower is conveyed to the deethanization tower. The method disclosed by the invention has the advantage that the cryogenic separation is simple in process flow and small in investment and can be used for producing target products, such as polymer-grade ethylene, polymer-grade propylene and the like.

The invention provides a method for preparing vegetation form porous concrete, adopting the 'pre-coating' technology, a slurry body with specific compositions coats coarse aggregates to form a sphere with a relatively uniform particle diameter, based on the physical coacervation of the sphere and the agglutination of the surface slurry body of the sphere; and the porous and macroporous structure, the cementation between solid phases of which is good and gas phases of which are communicated, is formed. The method comprises the concrete preparation steps that: (1) the fluidity and the viscosity range of the slurry body used to coat the aggregates are determined, and the mixing ratio is worked out by an absolute volume method; (2) the four-step stirring working procedure and the shaping model of the combination of the vibration and the pressuring are adopted; and (3) hole spaces are subjected to alkali-sealing treatment. The invention solves the difficult problems existing in the prior method that because of the downflow of the slurry body, the distribution of the pore spaces is not uniform and the discontinuous pore spaces increase, and the alkalinity in concrete pore spaces is relatively high, which are adverse to the growth of plants. When the vegetation form porous concrete prepared by the method of the invention is applied to road shoulder separator inserts, construction roofs, protection banks and protection slopes and parking lots of a highway, and good landscape effects and ecological environmental protection significance are achieved.

The invention relates to a preparation method for a super-hydrophobic/super-oleophylic loofah sponge fiber and an application thereof. The method comprises the following steps: pretreating loofah sponge fiber with sodium hydroxide and hydrogen peroxide and standing by; taking a certain amount of polyurethane adhesive and gas-phase nano-silica and adding into an acetone solvent; ultrasonically dispersing for 2-4 hours, thereby acquiring an acetone dispersion liquid; adding the pretreated loofah sponge fiber into the acetone dispersion liquid and ultrasonically dispersing for 2-10 hours; and drying in an oven, thereby acquiring the super-hydrophobic/super-oleophylic loofah sponge fiber used for effectively separating oil or organic solvent from water mixture. The preparation method provided by the invention is simple and quick; the used raw materials are economical, easily acquired and easy to degrade; the virulent fluorine-containing surfactant is not required; the prepared super-hydrophobic/super-oleophylic loofah sponge fiber has higher stability, excellent super-hydrophobic property and efficient oil water separation capacity; and besides, the prepared super-hydrophobic/super-oleophylic loofah sponge fiber has excellent strong acid resistance, strong base resistance, high salinity resistance, high temperature resistance and extensive social benefit and economic benefit.

A liquid feed material such as a heavy hydrocarbon feed in liquid form is contacted with a fluidized bed of heated solid particles which have a bulk horizontal velocity which is generally perpendicular to the flow of a fluidizing medium. The liquid feed material reacts on the solid particles to produce a vapor phase product, which vapor phase product is collected in a vapor collection apparatus.

The invention relates to a method for preparing methyl formate and coproducing dimethyl ether. The method comprises the steps: enabling raw materials, which contain formaldehyde and methanol, to enter a first reaction zone and be in contact with a catalyst A, carrying out separating so as to obtain a component I, enabling the component I to enter a second reaction zone and be in contact with a catalyst B, and then, carrying out separating so as to obtain methyl formate which serves as a product, dimethyl ether and a component II; taking at least 1% of the dimethyl ether as a product, and returning the rest dimethyl ether to the first reaction zone as circulating dimethyl ether; and returning the component II to the second reaction zone. In the raw materials, the ratio of the formaldehyde to the methanol (by mole numbers of carbon atoms contained by each ingredient) is 1: (0.05 to 4); the WHSV of the formaldehyde in the raw materials is 0.01/h to 15.0/h; the interior temperature of the first reaction zone is 50 DEG C to 100 DEG C; the interior temperature of the second reaction zone is 50 DEG C to 200 DEG C; the pressure is 0.1 to 10Mpa; and each ingredient is of a gas phase and/or a liquid phase independently. According to the method, the life of a catalyst is long, the reaction conditions are mild, the utilization ratio of the raw materials is high, and continuous production can be achieved, so that the method has large-scale industrialized application potential.

The invention relates to a new method for preparing hexafluorobutadiene. The new method is characterized by comprising the following steps that 1, HFC-134a and Br2 are subjected to a continuous gas phase catalysis reaction under the effect of a catalyst with metal chloride or bromide as an active component to prepare CF3CFBr2; 2, CF3CFBr2 is dripped into a reactor for aprotic polar solvent in which zinc powder is dissolved to prepare trifluoro vinyl zinc bromide; 3, with ferric salt and copper salt serving as catalysts, in the aprotic polar solvent, trifluoro vinyl zinc bromide is subjected to a telomerization reaction to generate a target product hexafluorobutadiene. The refrigerant HFC-134 a and Br2 which are used on a large scale at present and gradually obsoleted are used as starting raw materials, the materials are easy to obtain and low in price, the reaction is carried out under the gas phase condition, the reaction condition is easy to control, and the method is a C4F6 preparing method having a great market application prospect.

The invention discloses a device and a method for storing strong fragrant vegetable oil. The device and the method have the advantages that a nitrogen closed circulating storing device is provided, and a gas phase closed circulation manner is adopted to conduct nitrogen-filled storage on the strong fragrant vegetable oil, so that flavor components in the strong fragrant vegetable oil can achieve a balance between an oil phase and a gas phase to form a reversible state, the phenomenon that the flavor components in the strong fragrant vegetable oil are discharged from a breather valve, which is caused by gas replacement or gas emptying, is effectively avoided, the problem that the strong fragrant vegetable oil volatilizes and attenuates easily during the storing process is solved really, and the quality of the vegetable oil is improved.

The invention discloses an oolong place-of-origin traceability method, which comprises the following steps: S1, sample collection: collecting tea samples of southern Fujian and northern Fujian; S2, utilizing a headspace extraction-gas-phase ion transition technology to measure and analyze southern Fujian and northern Fujian oolong sample volatile matters to obtain a GC-IMS (Gas Chromatograph-Ion Mobility Spectrometer) result map; S3, carrying out multivariate statistical analysis on the compound measured by the GC-IMS and the relative concentration data of the compound; carrying out PCA (Principal Component Analysis) on the measured relative concentration of the compound. The oolong place-of-origin traceability method has the advantages that oolong places of origin can be accurately and efficiently distinguished to realize the classified identification and analysis of the oolong, the benefits of consumers and enterprises which produce geographical indication protection products can beprotected, and the Fujian oolong place-of-origin protection can be truly realized.

The invention discloses a device and method for measuring the contents of oxygen, nitrogen and part of organic gas in mixed gas. The method comprises the following steps: a mixed gas is introduced into a sample through a six-way valve; organic gas is detained through a Q column, residual oxygen and nitrogen are detected through a thermal conductivity cell (TCD) detector, a spectrogram is obtained,then the organic gas detained through the Q column is detected through a hydrogen flame (FID) detector, the spectrogram is obtained, and finally the peak areas of all components in the two spectrograms are measured through gas chromatography, so that the content of all the gases is obtained. The method disclosed by the invention is high in precision and accuracy, good in repeatability and simple,convenient and rapid to operate.

The invention relates to a solid transparent pen refill. The pen refill is prepared by reacting basic oil, aliphatic organic acid and sodium hydroxide solution for saponifying and generating sodium salt, adding a mixture of glycerin, ethanol, a dye and silicon dioxide, dissolving, mixing, cooling and moulding, and comprises the following components in part by weight: 15 to 25 parts of basic oil, 40 to 60 parts of aliphatic organic acid, 5 to 15 parts of sodium hydroxide solution, 3 to 10 parts of glycerin, 10 to 20 parts of ethanol, 0.1 to 1 part of dye and 1 to 10 parts of silicon dioxide, wherein the solubility of the sodium hydroxide solution is 30 to 50 percent, the concentration of the ethanol is over 90 percent, and the silicon dioxide is gas phase silicon dioxide or liquid phase silicon dioxide. The pen refill has the advantage of low cost and is convenient to process, and a water-soluble dye and a water-soluble fluorescent dye of the pen refill can be fully mixed with various components to make the color uniform; and the formed pen refill is smooth during writing, and has high pen feel and transparency, pigments cannot be diffused on a paper surface, and sediments cannot be adhered to the paper surface.

The invention relates to the technical field of white spirit commodity quality detection, in particular to a microwave digestion graphite furnace atomic absorption analysis method for measuring tracelead in white spirit. The method comprises the following steps that: S1: carrying out sampling and digestion; S2: preparing matrix modifier solution; S3: preparing sample solution; S4: preparing reference substance solution; S5: preparing a lead standard curve; and S6: measuring the content of sample lead. The method has the beneficial effects that the mixed solution of citric acid, polysorbate 80, ammonium dihydrogen phosphate and palladium nitrate is taken as the matrix modifier, a reduction atmosphere is formed in the graphite furnace, lead oxide reduction is enhanced, a situation that background adsorption interference is generated due to matrix evaporation during high-temperature atomization is avoided, analysis accuracy is improved, the polysorbate 80 serves as the solubilizer of thematrix modifier solution, condensed phase interference and gaseous phase interference are lowered, and in addition, the capability of the matrix modifier on inhibiting lead element volatilization canbe improved.

The invention discloses a technology for preparing low-carbon alcohol from syngas and coke oven gas. The technology comprises the following steps: mixing coke oven gas and syngas to form crude raw material gas for low-carbon alcohol synthesis; washing the crude raw material gas by low temperature methanol to remove the impurities such as hydrogen sulfide, carbon dioxide, and the like to produce purified gas for low-carbon alcohol synthesis, recycling the removed hydrogen sulfide after the sulfur is removed, discharging carbon dioxide into the sky; subjecting the purified gas to low-carbon alcohol synthesis, separating the synthesis products, which are in a gas phase and a liquid phase, to obtain a gas product, which is mainly composed of CO, H2 and CO2, and a liquid product, which is a mixture of alcohol and water, subjecting the gas product to the low temperature methanol washing and circulation, combusting the other part of gas product in a torch as exhausted gas or discharging the gas product; and separating the alcohol from the liquid product so as to obtain the low-carbon alcohol product. The technology can obtain a plurality of products, can reduce the excessive production capacity, promote the energy saving and discharge reducing, and adjust the energy structure.

The invention provides a liquid gas silicon dioxide amine electrolyte for a storage battery; the liquid gas silicon dioxide amine electrolyte comprises gas silicon dioxide, ionized water, sulfuric acid (analytically pure), polyacrylamide, phosphoric acid, industrial salt and potassium sulfate, wherein the liquid gas silicon dioxide amine electrolyte is obtained by adding the sulfuric acid to an ultrasonic oscillation ion high rotation speed machine, stirring the sulfuric acid, adding pure water to the sulfuric acid, adding the polyacrylamide, the phosphoric acid and the industrial salt to the ultrasonic oscillation ion high rotation speed machine according to a proportion, taking the gas silicon dioxide and adding the gas silicon dioxide to the ultrasonic oscillation ion high rotation speed machine. The prepared storage battery uses the gas silicon dioxide amine electrolyte; except for the change of the mixing ratio of the electrolyte, the gas silicon dioxide amine electrolyte is turned into a liquid electrolyte and obtains good fluidity as an ion oscillation high rotation speed machine process is particularly adopted; a problem of high viscosity of silicic acid electrolyte is overcome; and compared with the capacity of a common battery, the storage battery has the advantage that very high energy ratio is increased. The liquid gas silicon dioxide amine electrolyte for the storage battery, provided by the invention, obtains extreme cold weather resistance and high temperature resistance and can be normally used at a temperature of (-60)-(+60) DEG C; the discharging capacity is enhanced and is enhanced from the general 5-10 C to more than 40 C.

The invention relates to the field of petrochemical engineering, and discloses a silicon carbide micro-channel alkylation reactor and an application method thereof. A liquid acid circulating pipe (4),a raw material feed inlet (5), a gas phase extraction port (6) and a liquid phase extraction port (7) are respectively arranged on a reactor shell; a micro-channel reaction module and a defoaming separation component (3) are sequentially perpendicularly arranged in the shell from top to bottom; the raw material feed inlet (5) is formed in the top part of the shell; an upper end port of the liquidacid circulating pipe (4) is communicated with an inner cavity of the shell through a liquid acid feed inlet in the top part of the shell; the gas phase extraction port (6) is arranged on the lower part of the micro-channel reaction module. According to the silicon carbide micro-channel alkylation reactor and the application method thereof provided by the invention, iso-butane and olefin are adopted as raw materials, liquid acid is adopted as a catalyst, and a target product alkylate oil is obtained through alkylation reaction. The silicon carbide micro-channel alkylation reactor provided bythe invention effectively solves the problem that an alkylation reactor is nonuniform in temperature distribution, and has the characteristics of good raw material distribution, easiness in temperature control, high product quality and the like.

A process for producing liquid hydrocarbon products from a biomass feedstock is provided. The process comprises:

contacting the feedstock with one or more hydropyrolysis catalyst compositions and molecular hydrogen to produce a product stream comprising hydropyrolysis product that is at least partially deoxygenated;

hydroconverting said hydropyrolysis product in the presence of one or more hydroconversion catalyst compositions to produce a vapour phase product comprising substantially fully deoxygenated hydrocarbon product,

wherein one or both of the hydropyrolysis catalyst composition and the hydroconversion catalyst composition is produced in a process comprising incorporating one or more metals selected from those of groups 6, 9, and 10 of the periodic table, into a shaped support; and incorporating one or more coordinating organic compounds into said shaped support, thus forming a catalyst precursor; and then either (i) treating the catalyst precursor in the presence of hydrogen and sulfiding it or (ii) calcining the catalyst precursor.