Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Patent
1974-11-25
1976-11-23
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
208 80, 208120, 208155, 208164, B01J 824, C10G 1104
Patent
active
039935566
ABSTRACT:
In a fluid catalytic cracking unit utilizing a zeolite cracking catalyst and employing a multiplicity of elongated reaction zones or risers, significant improvements are obtained by introducing a light gas oil to at least one elongated reaction zone and a heavier gas oil to at least one other elongated reaction zone. Optionally, the vaporous effluent from either or both elongated reaction zones may be subjected to further cracking in the dense phase of catalyst in the reactor vessel. Operating conditions within the elongated reaction zones are established to permit the conversion of the heavier gas oil to be 0-30 volume percent lower than the light gas oil. Higher yields of higher octane gasoline are obtained where the unit is operated in the disclosed manner.
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Reynolds David L.
Youngblood Douglas J.
Gantz Delbert E.
McNulty William E.
Ries C. G.
Schmitkons G. E.
Texaco Inc.
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