公开(公告)号：US3704224A

公开(公告)日：1972-11-28

申请号：US3704224D

申请日：1970-10-02

Applicant: STANDARD OIL CO

Inventor： SCOVILL WARNER E ,  DAY DONALD R

IPC: C10B55/00 ,  C25C7/02 ,  C10G9/14

CPC classification number: C10B55/00 ,  C25C7/025

Abstract: AN IMPROVED COKE FOR THE PRODUCTION OF GRAPHITE ELECTRODES IS PRODUCED FROM A PETROLEUM COKING FEEDSTOCK CONTAINING 0.01% BY WEIGHT OR MORE OF SPENT CRACKING CATALYST BY REDUCING THE SPENT CRACKING CATALYST CONTENT OF THE PETROLEUM COKING FEEDSTOCK TO LESS THAN 0.005% BY WEIGHT PRIOR TO THE COKING OF SAID FEEDSTOCK. WHEN A SMALL AMOUNT OF COLLOIDAL GRAPHITE IS ADDED TO THE PETROLEUM COKING STOCK HAVING LESS THAN 0.005% BY WEIGHT OF SPENT CRACKING CATALYST JUST BEFORE IT IS COKED, AN ADDITIONAL IMPROVEMENT IN THE COKE IS OBTAINED.

公开(公告)号：US2605640A

公开(公告)日：1952-08-05

申请号：US12029649

申请日：1949-10-08

Applicant: STANDARD OIL CO

Inventor： PARTCH JOHN G ,  DAY DONALD R ,  SCOVILL WARNER E

IPC: G01F23/02

CPC classification number: G01F23/02