Modified microsphere fcc catalysts

Details Modified microsphere fcc catalysts Modified microsphere fcc catalysts

B - Operations, Transporting

01

J

B01J 29/08 (2006.01) B01J 37/30 (2006.01) C10G 11/05 (2006.01)

Patent

CA 2170374

An in situ process making improved zeolitic fluid cracking catalyst by spray drying a mixture of hydrous kaolin and spinel, essentially free from metakaolin, calcining the resulting microspheres to convert the hydrous kaolin to metakaolin, and reacting microspheres composed of a mixture of spinel and metakaolin forms of calcined clay with a seeded alkaline sodium silicate solution. The weight percent of hydrous kaolin in the starting (uncalcined) microspheres is greater than the spinel content.

L'invention concerne un procédé de fabrication in situ d'un catalyseur de craquage catalytique fluide zéolitique qui consiste à pulvériser à sec un mélange de spinelle et de kaolin hydraté essentiellement exempt de métakaolin, à calciner les microbilles résultantes de manière à transformer le kaolin hydraté en métakaolin, à faire réagir les microbilles constituées d'un mélange de formes à spinelle et métakaolin d'argile calcinée avec une solution de silicate de sodium alcalin amorcée. Le pourcentage en poids de kaolin hydraté dans les microbilles de départ (non calcinées) est supérieur à la teneur en spinelle.

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