High-activity hydro-cracking preprocessing catalyst and preparing method and application thereof

Abstract

The invention provides a high-activity hydro-cracking preprocessing catalyst and a preparing method and application thereof. The catalyst is composed of active components, carriers and aids, has the specific surface area of 160-300 m<2>/g and the pore volume of 0.38-0.60 cm<3>/g; the active components are one or more of Ni, Mo and W, the carriers are one or more of large-pore aluminum oxide, modified aluminum oxide and modified molecular sieves, and the aids are one or more of B, F and P; the hydro-cracking preprocessing catalyst is prepared through a vacuum organic complexing and dipping-microwave low-temperature activating method by placing the carriers in a dipping double cone for vacuumizing processing, loading active metal through an incipient-wetness impregnation method and finally conducting microwave heating and rapid low-temperature activating. The high-activity hydro-cracking preprocessing catalyst has the advantages of being high in activity and low in production cost.

Description

technical field [0001] The invention relates to the technical field of hydrogenation catalysts, and relates to a preparation method of a high-activity hydrocracking pretreatment catalyst. Background technique [0002] As the world's petroleum resources become increasingly heavy and inferior, and petroleum fuel products become increasingly high-quality and clean, the development of high-efficiency conversion of heavy crude oil and clean oil production technology has become the top priority of today's petroleum processing industry. Hydrocracking technology is a comprehensive processing technology that integrates the lightening of heavy oil and the production of clean oil products. It has become the core technology of future oil processing and the main trend of vigorous development of refining and chemical enterprises. The core of the hydrocracking technology lies in the hydrocracking catalyst, and the catalyst contains molecular sieves, which are easy to adsorb nitrogen compou...

AI Technical Summary

Problems solved by technology

The traditional wet method loads the active components. When the amount of metal impregnation is large, the impregnation will easily cause uneven distribution of the metal inside and outside the pores of the porous material; the catalyst is activated by traditional drying in an electric oven or a rotary kiln. The heating method is heat conduction, which is low in heating efficiency and time-consuming. Long, difficult temperature control, this way of heating and drying the activated catalyst will easily cause the aggregation of active metal components and reduce the reactivity of the catalyst

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