A kind of chemical type hydrocracking catalyst and its preparation method

A hydrocracking and catalyst technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of large crystallinity damage, low pore volume of modified Y molecular sieve, and affecting performance, etc. Achieve the effects of reducing the degree of skeleton damage, high selectivity of heavy naphtha, and good quality of tail oil products
CN106669780BActive Publication Date: 2018-12-21CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2018-12-21

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Abstract

The invention discloses a chemical type hydrocracking catalyst and a preparation method thereof. The chemical type hydrocracking catalyst comprises the following components calculated on the basis of the total weight of the catalyst: 55-85% of a carrier containing a modified Y-molecule sieve and 15-45% of a VIII-group and / or VIB-group metal on the basis of an oxide, wherein the carrier comprises 30-70% by mass of the modified Y-molecule sieve and the balance of amorphous silica-alumina and / or alumina; the specific surface area of the modified Y-molecule sieve is 500-800m<2> / g; the pore volume of the modified Y-molecule sieve is 0.3-0.8ml / g; the secondary pore volume of 2-7nm is greater than 40%, and is generally 50-60%; the infrared acid amount of the modified Y-molecule sieve is 0.5-1.2mmol / g; the content of Na2O is smaller than 0.15% by mass; the mole rataio of SiO2 / Al2O3 is 8-40; the lattice constant is 2.430-2.445; the relative crystallinity is greater than 80%. By adopting the chemical type hydrocracking catalyst, the quality of tail oil and the selectivity of heavy naphtha can be remarkably improved, and the stability of the catalyst can be remarkably improved.
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Description

technical field

[0001] The invention relates to a chemical type hydrocracking catalyst and a preparation method thereof, in particular to a hydrocracking catalyst rich in mesoporous structure, high silicon and high crystallinity modified Y molecular sieve and a preparation method thereof. Background technique

[0002] Hydrocracking technology has the characteristics of strong adaptability to raw materials, great flexibility in production operations and product plans, and good product quality. It can directly convert various heavy and low-quality feedstocks into high-quality jet fuel, diesel, and lubricating oil base materials that are urgently needed by the market. As well as chemical naphtha and tail oil steam cracking raw materials for ethylene production, it has become one of the most important heavy oil deep processing processes in modern oil refining and petrochemical industries, and has been increasingly widely used at home and abroad. Due to the shortage of domestic c...

Claims

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