Bong Suk Chang

US Patent:

45307555, Jul 23, 1985

Filed:

Oct 31, 1983

Appl. No.:

6/547086

Inventors:

Joseph M. Ritchie - Morristown NJ
Bong H. Chang - Summit NJ
John Sosnowski - Westfield NJ

Assignee:

Exxon Research and Engineering Co. - Florham Park NJ

International Classification:

C10G 2106
C10G 5504

US Classification:

208 96

Abstract:

A coking process is provided in which a stream of heavy oil product, which typically is recycled to the coking zone, is first subjected to solvent separation using coker naphtha as solvent to separate the heavy oil into a high Conradson carbon content product comprising a minor portion of the coker naphtha and a lower Conradson carbon content product comprising a major portion of the coker naphtha and, thereafter, recovering the lower Conradson carbon content product and recycling the high Conradson content product, including the minor portion of coker naphtha, to the coking zone.

US Patent:

45280886, Jul 9, 1985

Filed:

Nov 30, 1983

Appl. No.:

6/556285

Inventors:

Bong H. Chang - Summit NJ
Joseph M. Ritchie - Morristown NJ

Assignee:

Exxon Research and Engineering Co. - Florham Park NJ

International Classification:

C10G 2106
C10G 5504

US Classification:

208 96

Abstract:

A coking process is provided in which a stream of heavy oil product, which typically is recycled to the coking zone, is first subjected to solvent separation using coker naphtha as solvent to separate the heavy oil into a high Conradson carbon content product comprising a minor portion of the coker naphtha and a lower Conradson carbon content product comprising a major portion of the coker naphtha and, thereafter, recycling the high Conradson content product, including the minor portion of coker naphtha, to the coking zone, and separating the lower Conradson carbon content product in the coker product fractionator.