Hydrocracking catalyst and preparation method thereof, and method for hydrocracking of heavy feedstock
A hydrocracking and catalyst technology, which is applied in the field of hydrocracking, can solve the problems of high catalyst conversion cost and unsolved carbon deposition problems, and achieve the effects of low coke yield, high product conversion rate and good product selectivity
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[0033] The second aspect of the present invention provides a method for preparing the above-mentioned hydrocracking catalyst, wherein the method comprises:
[0034] (1) In the presence of an acid, a binder precursor slurry is prepared from an alumina source and a silicon oxide source;
[0035] (2) providing a carrier slurry containing a binder precursor slurry, a silica-alumina molecular sieve and an alkaline metal oxide, and spraying, drying and roasting the carrier slurry to obtain a carrier;
[0036] (3) The carrier is loaded with an active metal compound, then dried and roasted to obtain a catalyst precursor; the active metal compound is a compound containing a metal promoter;
[0037] (4) Reducing the catalyst precursor.
[0038] According to the present invention, in step (1), the alumina source can be the alumina source conventionally used in the art to prepare binders, such as hydrated alumina, alumina sol, boehmite, pseudoboehmite One or more of bauxite, alumina tri...
Embodiment 1
[0077] This example is used to illustrate the hydrocracking catalyst and its preparation method of the present invention.
[0078] (1) USY molecular sieve (purchased from Sinopec Catalyst Qilu Branch Company, dry basis content is 3.8kg), zinc oxide powder (purchased from Headhorse company, purity 99.7%, 0.66kg) and 6.57kg deionized water are mixed, After stirring for 30 minutes, a mixed slurry containing USY molecular sieve and zinc oxide was obtained;
[0079] (2) kaolin (purchased from Suzhou Kaolin Factory S1 series, with a dry basis content of 1.5kg) and pseudoboehmite (purchased from Aluminum Corporation of China Shandong Branch, with a dry basis content of 1.35kg) were stirred and mixed, and then added 5.5kg of deionized water was mixed evenly, and then 500mL of hydrochloric acid (concentration of 30% by weight, purchased from Beijing Chemical Plant) was added to make the pH value of the slurry 3.0, stirred and acidified for 1h, and then heated to 80°C for aging for 2h t...
Embodiment 2
[0084] This example is used to illustrate the hydrocracking catalyst and its preparation method of the present invention.
[0085] (1) PREHY molecular sieve (purchased from Sinopec Catalyst Qilu Branch, the dry basis content is 5.8kg), magnesium oxide powder (purchased from Weifang Lihe Powder Technology Co., Ltd., with a purity of more than 95%, 1.26kg) and 8.6kg deionized water was mixed, and after stirring for 30 minutes, a mixed slurry containing PREHY molecular sieve and magnesium oxide was obtained;
[0086] (2) Expanded perlite (purchased from Mantanghong Abrasives Factory in Gongyi City, with a dry basis content of 2.06kg, 30-60 mesh) and pseudo-boehmite (purchased from China Aluminum Shandong Branch, with a dry basis content of 1.48kg) was stirring and mixing, then added 5.6kg of deionized water and mixed evenly, then added 500mL of hydrochloric acid (concentration of 30% by weight, purchased from Beijing Chemical Plant) to make the pH value of the slurry 3.0, and sti...
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