38results about How to "Suitable for lysis" patented technology

The invention discloses a hydroupgrading catalyst carrier and a preparation method thereof. The carrier contains a beta molecular sieve and aluminum oxide, wherein the natures of the beta molecular sieve are as follows: the molar ratio of SiO2 / Al2O3 is 30-150, non-framework aluminum accounts for below 2% of total aluminum, and silicon atoms coordinated by a Si(OAl) structure account for above 95% of the silicon atoms in a framework structure. The preparation method comprises the following steps: mixing the beta molecular sieve and aluminum oxide and forming for preparation. The carrier disclosed by the invention takes the beta molecular sieve with a uniform framework silica-alumina structure as a cracking component, and a catalyst prepared by using the carrier disclosed by the invention has the characteristics of high yield of a diesel product, good product quality and the like.

The invention discloses a Naβ molecular sieve and a preparation method thereof. The properties of the Naβ-type molecular sieve are as follows: the SiO2 / Al2O3 molar ratio is 40-100, the specific surface area is 500-800m2 / g, the pore volume is 0.35-0.60mL / g, and the relative crystallinity is 101%-150%. The relative crystallinity of the molecular sieve after air roasting is above 100%; the relative crystallinity of the Naβ molecular sieve after steam hydrothermal treatment is above 95%. The preparation method of the invention can not only reduce the usage amount of the organic template, but also can synthesize the Naβ molecular sieve with high crystallinity and high silicon-aluminum ratio, and has better thermal stability and hydrothermal stability.

The invention discloses an inferior-diesel hydro-upgrading catalyst carrier and a preparation method thereof. The catalyst carrier comprises a modified beta molecular sieve, amorphous silica-alumina, macroporous alumina and SB powder. When the catalyst carrier is used for preparing a catalyst, metals for hydrogenation comprise non-noble metals of group VIB and group VIII. The modified beta molecular sieve and the amorphous silica-alumina are taken as cracking components, so that nitrogen resistance of the catalyst is improved, and long-period operation of the catalyst is ensured when high-nitrogen materials are being processed. The modified beta molecular sieve has good cycloalkane ring opening selectivity and a good alkane isomerism performance, and exhibits the advantages of high diesel productivity, large reduction amplitude of diesel solidifying point and obvious improvement of cetane number while the carrier is used for catalytically processing inferior diesel.

The invention discloses a method for producing API III from Fischer-Tropsch synthetic oil + Hydrogenation process of lube base oil. Using Fischer-Tropsch synthetic oil as raw material, adopt the two-stage hydrogenation process of hydrofining-hydro-upgrading-isomerization dewaxing to produce API III + Lubricant base oil. Hydrofining - The resulting oil obtained from the separation of the hydrogenation upgrading reaction effluent enters the isomerization dewaxing reaction zone, and the isomerization dewaxing reaction effluent is separated and fractionated to obtain different types of API III + The lubricating oil base oil product, the incompletely converted wax component obtained by cooling the fractionated reduced bottom oil is returned to the hydrogenation reforming reactor to continue the reforming reaction. The invention has simple technological process and wide adaptability of raw materials, and can be applied to the process of producing special oil products with good stability through hydrogenation of Fischer-Tropsch synthetic oil distillate.

The invention discloses a hydrogenation cracking catalyst and a preparation method of same. The hydrogenation cracking catalyst comprises a carrier and a hydrogenation active metal component, wherein the carrier includes [beta] molecular sieve, amorphous silica-alumina, and an adhesive. On the basis of the weight of the carrier, the carrier includes, by weight, 2-15% of the [beta] molecular sieve, 45-85% of the amorphous silica-alumina, and 13-40% of the adhesive. In the carrier, the [beta] molecular sieve, which is high in crystallization degree, high in Si / Al ratio and good in stability, is used as an acidic component and is matched with the amorphous silica-alumina, so that the hydrogenation cracking catalyst prepared with the carrier is especially suitable for a single-stage hydrogenation cracking process with high activity, good medium oil selectivity and high product properties.

The invention discloses a preparation method for a hydrocracking catalyst and a preparation method thereof. The catalyst comprises a carrier and a hydrogenation active metal component. The carrier comprises a beta molecular sieve, amorphous silicon aluminum and an adhesive. The beta molecular sieve has the properties that a mol ratio of SiO2 to Al2O3 is 60 to 100; a specific surface area is 505 to 850 m<2> / g; a pore volume is 0.35 to 0.60 mL / g; and relative crystallinity is 100 to 148%. After hydro-thermal treatment by water vapor, the relative crystallinity of the beta molecular sieve is 95% or above. According to the invention, the beta molecular sieve with high crystallinity, a high silica-alumina ratio and good stability is used as an acidic component of the carrier and matched with amorphous silicon aluminum; and the hydrocracking catalyst prepared from the carrier is especially applicable to one-stage tandem hydrocracking process and has the characteristics of high activity, good medium oil selectivity and good product properties.

The invention discloses a directly-prepared ultrahigh-purity carbon nanotube and a preparation method thereof, belonging to the technical field of carbon nanotubes. Under the condition that purification is not required, the purity of the carbon nanotube is greater than 99.7 weight percent, the tube diameter is between 0.8 nanometer and 30 nanometers, the specific surface area is between 200 m<2> / g and 500 m<2> / g, the agglomeration density is between 30 kg / m<3> and 150 kg / m<3> and the agglomeration particle size is between 20 microns and 150 microns. A method for directly preparing the ultrahigh-purity carbon nanotube by adopting a chemical vapor deposition method comprises the following steps of: dispersing catalyst crystal grains generated with a liquid phase method onto the surface of an inert carrier, drying and baking; cracking hydrocarbon with 1-6 carbon atoms in a fluidized bed reactor to generate a carbon nanotube; and separating the inert carrier from the generated carbon nanotube at a higher air speed. The carbon nanotube obtained with the method has the purity between 99.7 percent and 99.9 percent, and has the advantages of high carbon nanotube quality, no need of removing impurities by acid treatment, low cost and easiness for amplification and preparation.