Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Reexamination Certificate
2008-05-20
2008-05-20
Caldarola, Glenn (Department: 1797)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
C208S014000, C208S021000, C208S028000, C208S040000
Reexamination Certificate
active
07374665
ABSTRACT:
A method of blending delayed coker feedstocks to produce a coke that is easier to remove from a coker drum. A first feedstock is selected having less than about 250 wppm dispersed metals content and greater than about 5.24 API gravity. A second delayed coker feedstock is blended with said first resid feedstock so that the total dispersed metals content of the blend will be greater than about 250 wppm and the API gravity will be less than about 5.24.
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Bernatz Fritz A.
Eppig Christopher P.
Mart Charles J.
Siskin Michael
Caldarola Glenn
Clark W. Robinson H.
Douglas John
ExxonMobil Research and Engineering Company
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