Abstract: A residual oil feedstock comprises carbon residue measured according to ASTM D-4530. The feedstock is admixed with water/steam in an amount of 10 wt % to 30 wt % and optionally a hydrogen donor, such as methane and/or gas oil derived from recycle. The resulting admixture is subjected to delayed coking reaction conditions. The process yields hydrocarbon liquids in an increased amount. Coke make and gas make are thereby reduced.
Type:
Grant
Filed:
May 28, 1996
Date of Patent:
January 27, 1998
Assignee:
Texaco Inc.
Inventors:
David Anthony Storm, Peter Charles Ricci