Integration of Refining Units with the FCC: Sour water stripping units, sulphur recovery unit and utilities

Within a refining scheme, each unit has its role, has been studied and planned to fulfill an objective within the refinery, thus contributing its share to the quality of the final products or to meet legal requirements. Between loads, products and effluents, several streams are sent from one unit to another until they leave the refinery in their final form. Each unit influences the others in different ways, and understanding what an adjustment or disturbance in one unit causes in the others is part of the essential knowledge of the process engineer working in refining, since the purpose is not just to optimize each unit, but the refinery as a whole.

In this article, we will briefly discuss some of the main influences that the FCC suffers from the other refining units and what influences it exerts on them, considering some of the units present in the most common refining schemes.

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