Mineral oils: processes and products – Chemical conversion of hydrocarbons – Solids contacting and mixing
Patent
1988-06-28
1990-05-22
McFarlane, Anthony
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Solids contacting and mixing
208120, C10G 1118
Patent
active
049275267
ABSTRACT:
Modified ZSM-5 type zeolite catalyst is prepared by controlled aging in a moving bed catalytic cracking unit. The modified catalyst exhibits significant olefin isomerization activity and reduced paraffin cracking activity. Hydrocarbons are cracked to products boiling in the motor fuel range, e.g., gasoline, by using the modified catalyst mixture comprising a ZSM-5 type zeolite and a conventional cracking catalyst. The ZSM-5 type zeolite is treated with partial pressure steam under conditions which increase the gasoline octane number of the product fuel without decreasing gasoline plus distillate yield. A process for changing a catalytic cracking unit's inventory from a conventional catalyst to a modified ZSM-5 type containing catalyst is also disclosed.
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Anderson Conroy D.
Chou Tai-Sheng
Cormier, Jr. William E.
Dwyer Francis G.
Krambeck Frederick J.
McFarlane Anthony
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
Stone Richard D.
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