CATALYTIC CRACKING CATALYST REGENERATION METHOD AND SYSTEM USING BIO-BASED LIQUID-PHASE FUEL

Abstract

Disclosed is a catalyst regeneration method suitable for a fluid catalytic cracking device. The fluid catalytic cracking device comprises a catalytic cracking reactor and a catalyst regenerator. The regeneration method comprises the following steps: 1) providing a bio-based liquid-phase fuel; 2) introducing the bio-based liquid-phase fuel into a steam stripping section of the catalytic cracking reactor or into the catalyst regenerator; 3) introducing an oxygen-containing gas into the catalyst regenerator, wherein the oxygen content of the oxygen-containing gas is 14-28% by volume; and 4) feeding a spent catalyst from the catalytic cracking reactor into the catalyst regenerator, and bringing same into contact with the bio-based liquid-phase fuel or the residue thereof and the oxygen-containing gas therein to perform coke-burning regeneration. The method can greatly reduce the carbon emissions of a catalytic cracking unit and can also provide energy for other process units; in addition, some of the bio-based liquid-phase fuel can also be converted into chemicals, such that the green low-carbon development of a catalytic cracking process is realized.

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