Method and apparatus for controlling introduction of...

Details Method and apparatus for controlling introduction of... Method and apparatus for controlling introduction of...

C - Chemistry, Metallurgy

10

G

C10G 11/18 (2006.01)

Patent

CA 2160986

The disclosed method and apparatus provide for the addition of micro-spheroidal ("MS") Fluid Catalytic Cracking ("PCC") catalyst additives and/or bulk catalyst to an in situ circulating, active catalyst inventory (14) of a fluid catalytic cracking unit at times and rates precisely controlled to sustain an effective additive concentration. In a preferred version of the invention, each of a series of such apparatus (10) (comprising one such device (10) for each catalyst additive) is operated on a basic cycle time length during a portion of which the unit is engaged in active addition while in the retainer of the time, it is passive.

L'invention se rapporte à un appareil et un procédé permettant d'introduire des additifs microsphéroïdes de catalyseurs de craquage catalytique fluide et/ou de catalyseurs en vrac dans une quantité inventoriée (14) de catalyseurs actifs, circulant in situ d'une unité de craquage catalytique fluide, à des cadences déterminées avec précision afin d'entretenir une concentration d'additifs effective. Dans une variante préférée de l'invention, chaque série d'appareils (10) (comprenant ce type de dispositif (10) pour chaque additif de catalyseur) est mise en oeuvre sur une durée d'un cycle de base pendant laquelle l'unité est active, à savoir lorsqu'elle reçoit des ajouts alors que le reste du temps elle est passive.

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