Patent ID: 6046124
Filing Date: 2000-04-04
Classification: B01J

Abstract:
A process for regenerating solid treating particles utilizing swing bed regeneration, said swing bed regeneration having at all times at least one vessel on-line and at least one vessel off-line, comprising:a) conducting at least a portion of liquid hydrocarbon effluent from said on-line vessel(s) to a displacement surge drum;b) discharging a liquid hydrocarbon effluent from said displacement surge drum to at least one downstream unit;c) regenerating the solid treating particles in said off-line vessel(s) using an aqueous liquid regeneration fluid immiscible with the effluent from said displacement surge drum;d) displacing the aqueous liquid regeneration fluid from said off-line vessel(s) using a portion of the liquid hydrocarbon effluent from said displacement surge drum;e) increasing the discharge of liquid hydrocarbon effluent from said displacement surge drum during the displacement of aqueous liquid regeneration fluid by an amount equal to that portion of liquid hydrocarbon effluent used for said displacement;f) decreasing the discharge of liquid hydrocarbon effluent from said displacement surge drum upon completion of the displacement of aqueous liquid regeneration fluid by an amount equal to that portion of liquid hydrocarbon effluent used for said displacement; andg) said process characterized by having said displacement surge drum at all times at least partially filled with the liquid hydrocarbon effluent from said on-line vessel(s) and by having a substantially constant flowrate of liquid hydrocarbon effluent from said process to said at least one downstream unit.