Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Reexamination Certificate
2005-05-12
2010-02-09
Bullock, In Suk (Department: 1797)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
C208S013000, C208S050000, C208S132000, C201S021000, C201S028000
Reexamination Certificate
active
07658838
ABSTRACT:
A delayed coking process for making substantially free-flowing coke, preferably shot coke. A coker feedstock, such as a vacuum residuum, is heated in a heating zone to coking temperatures then conducted to a coking zone wherein volatiles are collected overhead and coke is formed. At least one polymeric additive is added to the feedstock prior to it being heated in the heating zone, prior to its being conducted to the coking zone, or both.
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Brown Leo D.
Siskin Michael
Varadaraj Ramesh
Bullock In Suk
Clark W. Robinson H.
ExxonMobil Research and Engineering Company
Hughes Gerard J.
Singh Prem C.
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