38results about How to "High hydrocracking activity" patented technology

The invention relates to a hydrocracking catalyst with high activity and high-medium oil selectivity. According to the hydrocracking catalyst, amorphous silicon aluminum is used as a carrier, and a specially-modified Y-type molecular sieve is used as acid component, the molecular sieve has high degree of crystallization and low cell parameters, rich secondary holes, large surface area, less uniformly-distributed acid sites, no strong acid center, and most of medium-strength acid centers, and also has strong nitrogen-resisting performance and better damage capacity; and the hydrocracking catalyst using the molecular sieve has high hydrocracking activity and high middle oil selectivity, and stronger nitrogen resisting capacity. The catalyst provided by the invention is used in the process of producing an intermediate distillate product by adopting a heavy hydrocarbon single-section or one-section hydrocracking process, and has better activity and middle oil selectivity.

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 discloses a preparation method of a hydrocracking catalyst. According to the method, a nickel and aluminum precipitate is prepared with a straight addition method; a tungsten, silicon and aluminum precipitate is prepared with a parallel flow precipitation method; the two precipitates are mixed, and a suspension liquid of Y type molecular sieve is added, such that the catalyst is prepared. With the method, the distributions of different hydrogenation active metals can be controlled; high-activity phase can be formed among active metals tungsten and nickel; and the interaction between active metals and the carrier can be improved. Therefore, the hydrogenation activity and the cracking activity of the obtained hydrocracking catalyst can cooperate well, and the application performance of the hydrocracking catalyst can be improved.

The present invention relates to a hydrocracking catalyst for hydrocarbon oil comprising a support containing a framework-substituted zeolite-1 in which zirconium atoms and/or hafnium atoms form a part of a framework of an ultrastable y-type zeolite and a hydrogenative metal component carried thereon and a method for producing the same. The hydrocracking catalyst of the present invention makes it easy to diffuse heavy hydrocarbon oils such as VGO, DAO and the like into mesopores, is improved in a cracking activity and makes it possible to obtain a middle distillate at a high yield as compared with catalysts prepared by using zeolite comprising titanium and/or zirconium carried thereon.

A hydrocracking catalyst containing Si-Al oxides contains two molecular sieves, one's metal components selected from Fe, Co or Ni of VIII family, at least one of them, and another's selected from Mo or W of VIB family, at least one of them. Its K value is 0.4 - 15A.(cm2.g)-1. One molecular sieve with octahedral zeolite structure with the content of Si-Al oxides of 10 - 90wt% of the catalyst, and another's limiting exponential is 0.5 C10G 47/20 1 15 3 2003/5/30 1552818 2004/12/8 1261542 2006/6/28 2006/6/28 2006/6/28 SINOPEC Beijing 100029 Shi Jianwen Nie Hnog Mao Yichao xu shu pang lizhi 72001 The Company Ltd. of the Chinese Patent Agency (Hong Kong) Zi Building 22, Yingjun Centre, No.23, Gangwan Road, Hong Kong Wanzi

A hydrocracking catalyst for heavy fractional oil, contains a Si oxide-Al oxides composition and Mo and/or W and Ni and/or Co loaded on it. Its K value is 0.4 - 15A(cm2 g)-1. The catalyst comprises the Si-Al oxides 50 - 90wt%, with oxide as account, the content of Mo and/or W is 5 - 40wt%, the content of Ni and/or Co is 1 - 10wt%; K=B/MSiO2 is proton acidity of the Si-Al oxides, MSiO2 is the molar fraction in the oxides. The catalyst achieves better activity in heavy fraction oil hydrocracking process.

The invention relates to a method for producing light steam cracking raw materials by catalytic cracking, and aims at mainly solving the technical problems that the catalyst cracking activity is low and the yields of ethylene and propylene are low when an existing method is used for hydrocracking petroleum hydrocarbon to prepare the light cracking raw materials. The problems are solved very well by adopting the technical scheme, hydrocarbon raw materials are in contact with a catalyst bed layer under the conditions that the reaction temperature is 250-500 DEG C, the reaction pressure is 0.1-8MPa and the raw material weight air speed is 0.1-8 per hour, so that effluents containing ethylene and propylene are obtained, wherein the catalyst is prepared from the following components in percentage by mass: (a) 0.1%-2.0% of at least one of Pd and Pt; and (b) 98%-99.9% of at least one of a ZSM-5 molecular sieve carrier and a ZSM-11 molecular sieve carrier which is prepared by a non-adhesive method. The method can be used for industrial production of hydrocracking to prepare the light cracking raw materials.

The invention is a kind of hydrocracking catalysts, which contains nonox-alumine, Y type of crystalline silica, iron or cobalt or niccolum from VIII lombardic and molybdenum or tung component from VIB lombardic. The K value of nonox-alumine is0.4,consulting catalyser's pivot, by weight, the content of nonox-alumine is 10%-90% and Y type is 1%-70%. Consulting oxid, by weight, the content of metal component from VIII lombardic is 1%-10% and metal component from VIB is 5%-40%. The catalyser has higher ac of hydrocrack and better selectivity to center cut oil.

A catalyst for hydrocracking hydrocarbon contains a high-Si zeolite with RE pentacycle structure, an acidic catalyzing component chosen from mordenite, Y zeolite, amorphous silicon oxide-alumina, aluminium chloride oxide, ZSM-4 and ZSM-20, at least one of Fe, Co and Ni, and at least one of Mo and W. Its advantage is high hydrocracking activity.

The invention provides a hierarchically porous hydrocracking catalyst and an application thereof. The catalyst comprises a carrier and metal components with hydrogenation activity which are loaded on the carrier. The carrier comprises a Y type molecular sieve and aluminum oxide, and metal components with hydrogenation activity are selected from molybdenum and/or tungsten in VIB group as well as nickel and/or cobalt in VIII group. The catalyst is characterized in that pore distribution of the catalyst satisfies the following conditions: the volume of pores whose diameters are less than 2nm accounts for 1.5-75% of total volume of pores of the catalyst, the volume of pores whose diameters are 2-100 nm accounts for 20-85% of total volume of pores of the catalyst, and the volume of pores whose diameters are more than 100 nm accounts for 2.5-65% of total volume of pores of the catalyst. Compared with the catalyst in the prior art, the catalyst has higher hydrocracking activity.

The invention discloses a preparation method for a hydrocracking catalyst containing heteropoly acid. The method comprises the following steps: preparing a nickel-aluminum precipitate with larger grain by using a regular addition method; preparing a tungsten-silicon-aluminum precipitate with smaller grain by using a parallel flow method; mixing the two precipitates and carrying out hydrothermal treatment; then carrying out impregnation with a heteropoly acid solution; and carrying out molding and calcination so as to prepare the hydrocracking catalyst. The method enables the catalyst to have high using performance by adjusting distribution of a hydrogenation active metal, heteropoly acid, alumina and amorphous silicon aluminum and promoting coordination and cooperation among the above-mentioned substances.

A silicon oxide - aluminum oxide contained hydrocracking catalyst contains a silicon oxide - aluminum oxide, a beta zeolite, metallic component containing at least a ferrum, cobalt or nickel from the VIII group and containing at least a molybdenum or wolfram from the VIB group, and the K value of said silicon oxide - aluminum oxide being from 0.4 to 15 A.(cm2.g)-1, catalyst as the datum, the weigh ratio of silicon oxide - aluminum oxide being from 10 to 99 percent, beta zeolite being from 1 to 50 percent, counted as oxidate, the weigh content ratio of metallic ingredient of the VIII group being from 1 to 10 percent, and the weigh content ratio of metallic ingredient of the VIB group being from 5 to 40 percent. The catalyst has a high hydrocracking activity, and a good selectivity to intermediate fraction oil.