30results about How to "High oil selectivity" patented technology

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 preparation method of a hydrocracking catalyst composition. The method comprises the steps of preparing an acidic mixed solution A containing hydrogenation reactive metals and silicon, preparing a sodium metaaluminate alkaline solution B, adding clear water to a reaction tank, and then filling CO2 into the clear water; and then adding the acidic mixed solution A and the alkaline solution B to the reaction tank in parallel to prepare gel, then adding turbid liquid of a Y type molecular sieve, mixing the substances uniformly, filtering the obtained mixture, drying the obtained filter cake, and then forming, washing, drying and roasting the filter cake, thus preparing the hydrocracking catalyst composition. The hydrocracking catalyst composition prepared by the method has the advantages of big specific surface area, big pore volume, high strength and high effective utilization rate of reactive metal components, and is especially suitable for a hydrocracking process for producing more middle distillates.

The invention discloses a preparation method of a hydrocracking catalyst. The method comprises the steps of preparing an acidic mixed solution A containing hydrogenation reactive metals and silicon, preparing a sodium metaaluminate alkaline solution B, and then adding the acidic mixed solution A, the alkaline solution B and CO2 to a reaction tank filled with clear water in parallel to prepare gel; and then adding turbid liquid of a Y type molecular sieve, mixing the substances uniformly, filtering, drying and forming the mixture, and then washing, drying and roasting the product, thus preparing the hydrocracking catalyst. The method has the beneficial effects that a clean preparation method is adopted, so not only can the catalyst be easily formed and the strength of the catalyst be improved, but also the pore volume and specific surface area of the catalyst can be increased and the dispersity of metals in the catalyst can be improved, thus the catalyst has higher hydrocracking activity, middle oil selectivity and stability; and the catalyst prepared by the method can be used for a single-section hydrocracking process of a non-refining section or a one-section serial hydrocracking process of a refining section.

The invention provides a method for preparing a nano-molecular sieve / silicon-aluminum oxide composite catalytic material, which is characterized in that the method comprises: firstly using a guiding agent method to synthesize a nano-molecular sieve, and the precipitation step in the synthesis is treated by microwave and / or ultrasonic waves , then add the aqueous solution of the mixture of water glass and aluminum source to the slurry containing nano-molecular sieve, add acid to adjust the pH to 7-9.5 to form a gel; then dry and roast the gel to obtain the composite catalytic material, wherein the aluminum source Selected from sodium metaaluminate or aluminum sulfate, this method keeps the particle size of the product molecular sieve below 100nm and the nano molecular sieve in it is not easy to aggregate, without going through the acidic sol process to avoid the molecular sieve being damaged by acid. The composite material is suitable for the catalysis of heavy oil macromolecules Cracking and hydrocracking reactions.

The invention discloses a preparation method for a hydrocracking catalyst. The method comprises the following steps: preparing a nickel-aluminum precipitate by using a regular addition method; preparing a tungsten-silicon-aluminum precipitate by using a parallel flow method; mixing the two precipitates, adding a Y type molecular sieve suspension and carrying out ageing; then adding an organic compound and carrying out pulping and mixing; and carrying out molding and the like so as to prepare the hydrocracking catalyst. The method enables the catalyst to have high using performance by improving the distribution of a hydrogenation active metal and coordination and cooperation between the hydrogenation active metal and a carrier and further enhancing the utilization rate of the hydrogenation active metal. The catalyst is particularly applicable as a high-and-medium oil type hydrocracking catalyst.

The invention discloses a preparation method of a hydrocracking catalyst. The catalyst adopts amorphous silicon alumina as a carrier, adopts a Y-shaped molecular sieve as an acidic component, adopts VIB group metal and VIII group metal as hydrogenation active metal components, adopts IVB group metal as an additive, and is prepared by combining an acidic mixed solution A with the hydrogenation active metal, silicon, aluminium and the additive and a sodium meta-aluminate alkaline solution B, performing gel formation, and adding a suspension of the Y-shaped molecular sieve. The method of the invention can increase the pore volume and the specific surface area of the catalyst, improve the metal dispersiveness in the catalyst, and provide the catalyst with high hydrocracking activity, middle oil selectivity and stability.