The invention discloses a preparation method of a hydrocracking catalyst. The preparation method comprises the following steps: (1) roasting a hydrocracking catalyst inactivated in a catalytic diesel oil hydrogenation conversion process in an oxygen-containing atmosphere till the decarburization rate is 40-80 percent to obtain a decarbonization catalyst; (2) grinding the decarbonization catalyst obtained in the step (1) and sieving for later use; (3) mixing sieved power obtained in the step (2) as a raw material with a hydrocracking catalyst carrier material and a hydrogenated active metal precursor in proportion, adding a peptizing agent and an auxiliary extrusion agent, rolling, extruding and performing high-temperature and high-pressure treatment in an H2S atmosphere to obtain the hydrocracking catalyst. A hydrocracking catalyst regeneration agent is mixed in the preparation process of a fresh catalyst, and in the preparation process, and the vulcanization is completed at the same time. The catalyst has the characteristic of being more reasonable in acid strength distribution, is good in active metal dispersibility and is applied to the catalytic diesel oil hydrogenation conversion process; the initial settling time and the start-up time of the device catalyst are shortened, so that the inactivation rate of the catalyst is reduced, and the catalyst operating cycle is prolonged.

Preparation method of hydrocracking catalyst

The invention discloses a hydrogenation catalyst, which takes gamma-Al2O3 or siliceous gamma-Al2O3 as a carrier and Ni, Co, W and/or Mo as active components and also contains B auxiliaries The invention also relates to a preparation method of the hydrogenation catalyst, comprising the following steps: (1) uniformly mixing pseudo-boehmite powder with a certain proportion of sesbania powder, then adding a peptizator and deionized water for kneading, and then carrying out extruding, drying and calcinating to obtain the gamma-Al2O3 or siliceous gamma-Al2O3 carrier; (2) loading the gamma-Al2O3 or siliceous gamma-Al2O3 carrier with impregnation liquid prepared from an Ni containing compound, a B containing compound and other auxiliaries by an impregnation method, and then carrying out drying and calcinating to obtain the semi-finished product of the catalyst; and (3) loading the semi-finished product of the catalyst with impregnation liquid prepared from a Co containing compound, a W and/or Mo containing compound and other auxiliaries by the impregnation method, and then carrying out drying and calcinating to obtain the finished product of the catalyst

Hydrogenation catalyst and preparation method thereof

The invention discloses a hydrocracking catalyst carrier and a preparation method thereof The hydrocracking catalyst carrier comprises: a modified beta molecular sieve, a modified Y type molecular sieve and alumina Specifically, the modified beta molecular sieve is prepared by: subjecting a crystallized beta molecular sieve slurry directly to ammonium exchange and a template agent removal treatment, then first conducting a hydrothermal treatment, and performing an aluminum salt solution treatment, under the condition of maintaining a high beta molecular sieve crystallinity, removing part of non-framework aluminum uniformly, thus obtaining the beta molecular sieve with the characteristics of high Si/Al ratio, large specific surface area, appropriate acidity and acid distribution, and reasonable pore structure, etc The modified beta molecular sieve especially has a suitable cracking effect and a very good isomerization effect on long-chain alkane and the long side chain alkyl of aromatic hydrocarbon and cyclane, and has a synergistic effect with the Y type molecular sieve, so that the prepared hydrocracking catalyst can have very high catalytic activity and middle distillate selectivity And the condensation point of diesel fraction is substantially reduced, and the product properties of middle distillate are improved

Hydrocracking catalyst carrier and preparation method thereof

The invention provides an efficient composite oxide desulfurizing agent preparation method which includes the steps: selecting Fe2+ as an iron source of main active components; adding soluble salt of metals such as Zn, Mn, Cu and Co in a certain proportion to serve as promoters; taking alcohol amine as a precipitant; acquiring composite hydroxide precipitation by the aid of a co-precipitation method; depositing Al3+ by the aid of alcohol amine solution under a certain reaction condition to obtain alumina sol; mixing the alumina sol and a composite hydroxide system obtained by the co-precipitation method according to a certain proportion; washing, drying, oxidizing and grinding mixture into powder, adding a certain quantity of binders, and kneading the mixture to obtain a composite oxide desulfurizing agent. The method creatively takes alcohol amine organic alkali as a precipitating agent for preparing composite hydroxide, and the obtained desulfurizing agent has high breakthrough sulfur capacity in oxygen-free atmosphere. Besides, the invention provides a method taking the alumina sol prepared by alcohol amine as a hole channel carrier of the composite oxide desulfurizing agent, and the hole structure of the composite oxide desulfurizing agent is improved.

Efficient composite oxide desulfurizing agent preparation method

The invention belongs to the technical field of water treatment and relates to an ozone catalytic oxidation catalyst for wastewater treatment The ozone catalytic oxidation catalyst is characterized by being composed of an active ingredient, an auxiliary and a carrier, the active ingredient is a transition metal oxide, the auxiliary comprises an alkali metal oxide, an alkali metal oxide or a lanthanide series metal oxide, and the carrier is a modified carrier through acid treatment or alkali treatment The invention further provides a preparation method of the catalyst The preparation method includes: modifying the carrier through acid treatment or alkali treatment to obtain a modified carrier; adopting an impregnation method to load the active ingredient, the auxiliary and a dispersant on the modified carrier; obtaining the ozone catalytic oxidation catalyst through curing, drying and roasting The ozone catalytic oxidation catalyst is higher in COD removal rate, longer in service life, simple in preparation process, low in cost, free of secondary pollution and highly suitable for industrialized production

Ozone catalytic oxidation catalyst for treating reverse osmosis concentrated water and preparation method of catalyst

The invention discloses a method for preparing desulfurizer capable of absorbing catalytic cracking gasoline at high selection, wherein catalyst is formed by loading the active components, such as nickel, cobalt and copper, on alkaline-metal modified silicon-aluminum composite carrier. The method for preparing the catalyst comprises two processes: the first process is to prepare the soluble precursor of each component and complexing agent as colloidal sol, dry, roast, form and process through hot water to obtain the catalyst; and the second process is to adopt the sol-gel method to prepare analkaline composite oxide carrier, then adopt a soaking method to introduce the first active component Ni and one of the second active components Co, Cu and Sn, finally process through the hot water to obtain the catalyst. The method has simple process, the large specific surface area of the catalyst is large, and the activity is stable. The method has advantages of high desulfurizing depth, good selection and little loss of octane value, so the method can be suitably applied to the desulfurization process of the catalytic cracking gasoline.

Method for preparing desulfurizer capable of absorbing catalytic cracking gas at high selection

The invention relates to a method for performing hydrogenating pretreatment on carbon nine petroleum resin. The method is characterized by comprising the following steps of: 1, preparing a transition metal hydrogenating pretreatment agent, wherein a carrier comprises one or more of aluminum oxide, silicon oxide and/or amorphous silicon aluminum oxide; metal active ingredients comprise two or moreof transition metal cobalt, molybdenum, nickel, tungsten and zinc; and the hydrogenating pretreatment agent is prepared by an immersion method or an equal pH coprecipitation method; and 2, performinghydrogenating pretreatment, namely dissolving crude carbon nine resin by using a solvent, filtering and separating and hydrotreating on a fixed bed high-pressure hydrogenation device, wherein the resin concentration is 25 to 33 weight percent according to the weight ratio of the resin to the solvent; the solvent comprises chain-shaped or cyclic saturated hydrocarbon, aromatic hydrocarbon or mixedhydrocarbon; the temperature of the high-pressure hydrogenation reaction is between 250 and 350 DEG C; the pressure is 8.0 to 20.0 MPa; the liquid volume airspeed is 0.5 to 2 h ; the hydrogen oil volume ratio is (500-1,200):1; and the sulfur content and the nitrogen content of the product subjected to the hydrogenating pretreatment are less than 10mu g/g.

Method for performing hydrogenating pretreatment on carbon nine petroleum resin

The invention discloses a method for preparing a selective hydrogenation ring-opening catalyst for aromatic hydrocarbons with double rings or more. The method is characterized in that the selective hydrogenation ring-opening catalyst for aromatic hydrocarbons with double rings or more is prepared from a carrier, active ingredients and aids, wherein the carrier is prepared from alumina, amorphous silica-alumina, a modified small grain Beta-type molecular sieve and an SPAO-5/ZSM-5 composite molecular sieve; the active ingredients at least include an oxide of Mo or W and at least include an oxide of Co or Ni; and the aids refer to one or two out of F and P. The invention also relates to a preparation method of the catalyst and a method for synthesizing the SPAO-5/ZSM-5 composite molecular sieve. The catalyst is effectively matched with a hydrogenation active center, an isomerization active center and a cracking active center, so that the catalyst has excellent aromatic hydrocarbon hydrogenation ring-opening selectivity in the hydrogenation process of low-quality distillate oil enriched in aromatic hydrocarbons with double rings or more.

Method for preparing selective hydrogenation ring-opening catalyst for aromatic hydrocarbons with double rings or more

Method for producing clean diesel by full liquid phase hydrogenation

The invention belongs to the technical field of catalysis, and relates to a preparation method of a catalyst for hexone synthesis by acetone hydrogenation and an application; the catalyst is composed of active component nickel loaded on an alumina carrier modified by transition metal oxides The preparation method of the catalyst comprises two procedures: the first one is that transition metal oxides and alumina are mixed, molded, dried, roasted, and subject to hydro-thermal treatment, and the active component Ni is immersed to obtain the catalyst; the second one is that an alumina carrier is prepared firstly, then transition metal oxides and Ni are introduced by an immersion method, and finally hydro-thermal treatment is performed to obtain the catalyst The catalyst of the invention adopts non-noble metal as the main active component, is simple in preparation, low in cost, strong in raw material adaptability, long in service life, and high in activity and selectivity, and combines three catalytic functions of acetone condensation, dehydration, and hydrogenation as a whole, and the reaction process flow is simplified greatly

Zhang Yuting

Papers

Method for preparing desulfurizer capable of absorbing catalytic cracking gas at high selection

Method for performing hydrogenating pretreatment on carbon nine petroleum resin

Method for preparing selective hydrogenation ring-opening catalyst for aromatic hydrocarbons with double rings or more

Method for producing clean diesel by full liquid phase hydrogenation

Preparation method of catalyst for hexone synthesis by acetone hydrogenation and application