Patent ID: 6830677
Filing Date: 2004-12-14
Classification: C10G,Y10S

Abstract:
A method for reducing foulant agglomeration from a coker gas oil containing molecular oxygen, peroxides, or both, which method comprises:a) conducting an effluent stream from a coking process to a first separation region; b) separating at least a light fraction in the first separation region; c) conducting steam and the light fraction to a second separation region and separating a vapor fraction and a liquid hydrocarbon fraction having a peroxide concentration; d) combining the liquid hydrocarbon fraction with an oxygen scavenger to reduce the oxygen concentration, the peroxide concentration, or both in the liquid hydrocarbon fraction; e) conducting the liquid hydrocarbon fraction having a reduced peroxide concentration back to the first separation region; and f) separating in the first separation region coker gas oil having a boiling point higher than the light fraction.