Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1988-06-10
1990-07-03
McFarlane, Anthony
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208 52CT, 208121, 208149, 208251R, C10G 1105
Patent
active
049388630
ABSTRACT:
A catalytic cracking catalyst and process which tolerates high levels of vanadium and coke precursors in the feed is disclosed. A zeolite in an alumina free binder or coating, preferably silica, is used as the cracking catalyst. RE-USY in silica is especially preferred as it has a low affinity for vanadium, low coking characteristics and high stability. Preferably a vanadium getter additive is present as separate particles to act as a vanadium sink. The catalyst and process may be used in fluidized bed catalytic cracking (FCC) or in moving bed catalytic cracking units. A method of making a coated catalyst, by adding a layer of an alumina free material to a core of alumina containing cracking catalyst is also disclosed.
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Degnan Thomas F.
Huh Billy K.
McFarlane Anthony
McKillop A. J.
Mobil Oil Corporation
Speciale C. J.
Stone R. D.
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