METHOD FOR HEATING THE DISTILLATION COLUMN OF THE C3 CUT FROM AN FCC UNIT USING A WATER CIRCUIT HEATED BY FLOWS BELONGING TO UNITS PLACED UPSTREAM AND / OR DOWNSTREAM OF THE FCC UNIT

摘要

The present invention describes a method of heating the reboiler of the propane / propylene separation column located downstream of an FCC unit and fed by the C3 cut of said FCC unit, a method of heating the water of a fuel circuit. hot water by means of one or more process fluids from units placed upstream and / or downstream of the FCC unit and called hot fluids, one of these fluids consisting of the overhead vapors of the fractionation column bonded to the mild hydrocracking unit.