Refinery Catalytic Cracker Regenerator SOx Control Process Survey.

摘要

The report gives results of a survey of conceptual techniques applicable to fluid catalytic cracker (FCC) regenerator off-gas sulfur oxide emission reduction,with respect to their application both to the FCC system itself and to the regenerator off-gas. These two control techniques have also been compared with FCC feedstock desulfurization. The economics for all systems evaluated are compared. A comprehensive analysis of FCC operations has produced evidence that sulfur emission control can most effectively be achieved through steam contacting of the spent cracking catalyst. This concept is therefore proposed as the primary subject for further investigation.