Catalyst inventory control in an ebullated bed process

Details Catalyst inventory control in an ebullated bed process Catalyst inventory control in an ebullated bed process

C - Chemistry, Metallurgy

10

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196/1, 196/129

C10G 47/26 (2006.01) B01J 8/24 (2006.01) C10G 45/00 (2006.01) C10G 49/12 (2006.01) C10G 49/26 (2006.01)

Patent

CA 1334014

An improved method of controlling catalyst inventory in the reactor of an ebullated bed process has been discovered. Pressure differentials are measured to calculate a catalyst inventory characterization factor. Aged catalyst is withdrawn and fresh catalyst added in an amount to reestablish the value of the factor. The catalyst to oil ratio is maintained despite changes in bed ebullation, gas and liquid holdups and oil residence time changes.

600033

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