Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1980-07-30
1982-04-20
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
C10G 1105
Patent
active
043258131
ABSTRACT:
This invention provides an improvement in the operation of an FCCU such as to maintain the octane rating of the gasoline fraction from the cracker at a high level over repeated cycles of cracking charge and regeneration by using fresh zeolitic catalyst particles having an alkali metal oxide less than about 1.5% (based on the zeolite content) and controlling the amount of alkali metal oxide that comes into contact with catalyst inventory throughout cracking, stripping and regeneration so as to maintain alkali metal oxide content of equilibrium catalyst below 2.0%, based on the weight of zeolite in the fresh zeolitic catalyst.
REFERENCES:
patent: 3669903 (1972-06-01), Bourguet et al.
patent: 3779898 (1973-12-01), Youngblood
patent: 3926780 (1975-12-01), Ward
patent: 4036739 (1977-07-01), Ward
patent: 4137152 (1979-01-01), Chester et al.
patent: 4259212 (1981-03-01), Gladrow et al.
Brown Stanley M.
Reagan William J.
Woltermann Gerald M.
Chaudhuri Olik
Engelhard Minerals & Chemicals Corporation
Gantz Delbert E.
Moselle Inez L.
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