Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Reexamination Certificate
2005-03-15
2005-03-15
Griffin, Walter D. (Department: 1764)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
C208S067000, C208S070000, C208S076000, C208S077000, C208S075000, C208S072000, C208S078000, C208S113000
Reexamination Certificate
active
06866771
ABSTRACT:
A process and apparatus is disclosed for contacting feed with mixed catalyst in a secondary reactor that is incorporated into an FCC reactor. The mixed catalyst used in the secondary reactor is regenerated catalyst from a regenerator that regenerates spent catalyst from an FCC reactor that is mixed with spent catalyst from either the FCC reactor or the secondary reactor. The mixing of spent and regenerated catalyst reduces the catalyst temperature and tempers catalyst activity to inhibit both thermal and catalytic cracking reactions.
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Article “A Modified FCC Process MIP for Maximizing Iso-Paraffins in Cracked Naphtha” by Xu Youhao et al.,Petroleum Processing and Petrochemicals.
Lomas David A.
Pittman Rusty M.
Griffin Walter D.
Paschall James C.
Tolomei John G.
UOP LLC
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