Cracking catalyst

Abstract

The invention discloses a cracking catalyst. The character is in that the catalyst has one kind of mesoporous material which is the (0-0.3)Na2O .(40-85)Al2O3 .(10-55)SiO2 .(1-20)MxOy, the metal M is one element in IB, IIB,IVB,VB,VIB,VIIB,VIIIB or lanthanide series rare earth; The x is the highest valence of O, y is the highest valence of M. The structure of the mesoporous material is same as the thin diaspore structure and the specific area is 200-400 square m / g, the hole volume is 0.5-2.0ml / g and the average size is 8-20nm, the most probable size is 5-15nm. The catalyst can be used in the catalytic cracking reaction directly, so it can improve the raw oil and the heavy oil percent conversion but decrease the sulfur content of FCC gasoline.

Description

a cracking catalyst technical field The present invention relates to a cracking catalyst, in particular to a fluidized catalytic cracking catalyst containing mesoporous material as a desulfurization active component. Background technique Fluid Catalytic Cracking (FCC) is a petroleum refining process, which is the main process of converting heavy fractions such as vacuum distillate oil or residues of heavier components into fractions with smaller molecules. It has been used on a large scale in petroleum refining commercial applications. About 70-80% of gasoline comes from gasoline obtained from fluid catalytic cracking (FCC), and about 90% of the sulfur comes from FCC gasoline. Due to the increasing emphasis on environmental protection and the emission of Euro II and Euro III With the promulgation of standards, the restrictions on sulfur content, olefins and aromatics in gasoline have become more stringent. Therefore, the removal of sulfur compounds in the catalytic cracki...

AI Technical Summary

Problems solved by technology

However, the synthesis of mesoporous materials often uses expensive templates and organic silicon sources, and most of them have to undergo high-temperature hydrothermal post-treatment processes.