Preparation method of FCC gasoline desulfurization agent composition

Abstract

The invention discloses a preparation method of an FCC gasoline desulfurization agent composition. The catalyst is prepared by the following steps of mixing and stirring water, a binding agent, an aluminum source, clay, a molecular sieve and zinc aluminate gahnite so as to form slurry, and then spraying drying so as to obtain the catalyst. The catalyst has an excellent function of reducing the sulfur content of gasoline, is relatively large in pore volume and smooth in duct, and is beneficial to the dispersion of a sulfide; as an active center, zinc aluminate gahnite can adsorb the sulfide of L alkali character, and is difficult to lose, and is better in stability when compared with zinc oxide. The catalyst can be doped with a conventional FCC catalyst, and also can be independently applied to the catalytic cracking technological process.

Description

technical field [0001] The invention relates to a preparation method of a catalyst composition, in particular to a preparation method of a catalytic cracking (FCC) gasoline desulfurization catalyst composition. Background technique [0002] In recent years, with the rapid development of the economy, the consumption of automobiles and petroleum has increased rapidly. People have paid more and more attention to the environmental pollution caused by automobile exhaust emissions. It is imperative to improve the quality of refined oil and reduce environmental pollution. At present, the major developed countries in the world strictly limit the sulfur content of motor gasoline. The world fuel specification class IV motor gasoline standard requires the sulfur content to be less than 10 μg / g; the Euro IV motor gasoline emission standard requires the gasoline sulfur content to be less than 50 μg / g. Since January 1, 2010, my country has implemented the No. III standard for motor gasoli...

AI Technical Summary

Problems solved by technology

[0019] The invention provides a preparation method of catalytic cracking gasoline desulfurization catalyst composition, which solves the problems of poor homogeneity of zinc-aluminum spinel product components and small specific surface area in the traditional synthesis method; and the method provided by the invention does not need to add surface The activator and precipitant do not need to be acidified by adding acid, which is relatively economical and environmentally friendly. After the spinel is made into a sulfur reduction catalyst, the pore volume of the catalyst is large, and the zinc-aluminum spinel has a strong sulfide selective adsorption center, making it Catalyst has a better sulfur reduction effect, and the active center is not easy to lose

Images