Assitants for catalyzing cyacking of reducing gasoline sulphur content, preparation process and application thereof

Abstract

A catalytic cracking assistant for decreasing the sulfur content in the gasoline and its preparation method are disclosed. It doesn't contain the component of zeolite, and it makes from the kaolin which is pulped by addition of water, then the pulp is spray to the micro balloons which are calcined to balloons, extracted by the acid or alkali and through ion-exchange to decrease the sodium content. The characteristic of it is that the sodium oxide content is lower than 0.75%, at the same time it contains one or many element modifier of Cu, Zn, Fe, Ni, Ca, Ti and V the content of which is 0.1-6%. This assistant can be blended with the original FCC catalyst in the catalytic cracking reaction, and this can decrease the sulfur content in gasoline, the catalytic cracking choose ability is good, the preparation cost is low.

Description

technical field

[0001] The present invention relates to a catalytic cracking additive for reducing the sulfur content of gasoline, a preparation method and application thereof, more specifically, a catalytic cracking additive which does not contain zeolite and is prepared with kaolin as a raw material and has the ability to reduce the sulfur content of gasoline and its In the preparation method, the catalytic promoter can be mixed with common FCC catalysts and used in the catalytic cracking process. Background technique

[0002] With the increasingly stringent environmental protection regulations, countries have successively formulated new standards for gasoline, especially limiting the content of sulfur and olefins. Catalytic cracking is one of the main means of petroleum processing, and FCC gasoline accounts for more than 80% of the total finished gasoline. Therefore, reducing the sulfur content of catalytic cracking gasoline is the key to reducing the sulfur content of ga...