Hydrocracking catalyst carrier, hydrocracking catalyst and preparation method and application thereof

Abstract

The invention discloses a hydrocracking catalyst carrier, a hydrocracking catalyst and a preparation method and application thereof. The carrier comprises an Al-SBA-15 mesoporous molecular sieve, a beta molecular sieve, aluminum oxide and nano silicon dioxide, and the pore distribution of the Al-SBA-15 mesoporous molecular sieve comprises: the pore diameter lt; the pore volume of 4 nm pores accounts for 20% or less of the total pore volume, preferably 15% or less; in the Al-SBA-15 mesoporous molecular sieve, the ratio of acid B to acid L is 1 or below. The hydrocracking catalyst prepared by adopting the hydrocracking catalyst carrier has excellent comprehensive performance, is especially used in the hydrocracking reaction process of shale oil with a complex raw material structure, and has excellent product quality.

Description

technical field [0001] The invention relates to a hydrocracking catalyst carrier, a hydrocracking catalyst and a preparation method and application thereof. The catalyst is particularly suitable for the hydrocracking process of shale oil distillate oil. Background technique [0002] Among natural resources, oil shale, like petroleum, is mainly produced by algae and other lower plankton through decay and coalification. The shale oil "squeezed" from oil shale through low carbonization and other methods is called "artificial petroleum". After further processing and refining, liquid fuels such as gasoline, kerosene, and diesel can be produced. In the initial stage of oil shale mining, the development of this industry was restricted due to the unqualified technology and the pollution of the environment during the production process. In recent years, with the advancement of technology, this problem has been well solved. It is foreseeable that under the current situation of short...

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Problems solved by technology

[0005] CN105582992A discloses a hydroisomerization catalyst, its preparation method and application, and a method for hydroisomerization of hydrocracking tail oil. This technology can use wax oil as raw material oil and prepare it by using isomer-containing molecular sieves The hydrocracking catalyst produced high-quality products. The tail oil has high isomer content, low freezing point and high viscosity index. It is the raw material of high-quality lubricating oil base oil. However, the catalyst uses a precious metal catalyst, which limits the application in industry.

This kind of technology can produce various high-quality hydrocracking products by using wax oil as raw material oil, and using the hydrocracking method containing Y-type molecular sieve catalyst and isomeric type molecular sieve hydrocracking catalyst at the same time, but the product yield is not ideal

[0007] CN101450320B discloses a hydrocracking catalyst containing Y molecular sieve and its preparation method. In this invention, the Y molecular sieve is first prepared into a mixed solution with aluminum salt and acid, and then the Y molecular sieve is treated with the above mixed solution after hydrothermal treatment. , the catalyst is finally prepared, although the catalyst has high activity, but its nitrogen tolerance is poor, and its industrial use is limited

The nitrogen resistance of the catalyst prepared by using the carrier is improved, but the activity of the catalyst is poor and cannot meet the industrial requirements

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