公开(公告)号：US3617480A

公开(公告)日：1971-11-02

申请号：US3617480D

申请日：1969-05-29

Applicant: GREAT LAKES CARBON CORP

Inventor： KEEL HARVEY E

IPC: C01B31/00 ,  C10B55/00 ,  C10B57/04 ,  C10G37/00

CPC classification number: C10B55/00 ,  C10B57/045

Abstract: The coking process disclosed herein provides a method for producing high quality petroleum coke which is particularly suitable for use in manufacturing electrothermic graphite electrodes. A high-boiling gas oil fraction is obtained from the overhead products produced during the coking of a petroleum oil residuum. This high-boiling gas oil fraction is segregated during the manufacture of regular or average quality petroleum coke and is subsequently coked in a separate coking operation under delayed coking conditions of time, temperature and pressure to produce a superior quality petroleum coke.