B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 29/08 (2006.01) B01J 21/04 (2006.01) B01J 21/12 (2006.01) B01J 21/16 (2006.01) B01J 23/00 (2006.01) B01J 23/10 (2006.01) B01J 37/00 (2006.01) B01J 37/08 (2006.01) C10G 11/05 (2006.01)
Patent
CA 2463564
A fluid catalytic cracking catalyst made from microspheres that initially contain kaolin, a dispersible boehmite alumina and a sodium silicate or silica sol binder. The kaolin portion contains hydrous kaolin and optionally spinel, or mullite, or both spinel and mullite made via kaolin which has been clacined through its characteristic exotherm. Calcination of the hydrous clay to metakaolin and formation of in-situ zeolite by treatment with sodium silicate yields a catalyst containing Y-faujasite and transforms the dispersible boehmite into a transitional alumina. The catalyst can be used to crack resid or resid-containing feeds as the alumina phase formed from the dispersible boehmite passivates nickel and vanadium contaminants.
La présente invention concerne un catalyseur de craquage catalytique fluide constitué de microsphères qui contiennent initialement du kaolin, une alumine de boehmite dispersible et un silicate de sodium ou un liant sol silice. La partie kaolin contient du kaolin hydrique et éventuellement des spinelles ou une mullite ou ces deux composés fabriqués via le kaolin qui a été calciné par son dégagement de chaleur caractéristique. La calcination de l'argile hydrique en métakaloin et la formation sur site de zéolite par traitement au silicate de sodium produit un catalyseur contenant un faujasite Y et transforme la boehmite dispersible en une alumine de transition. On peut utiliser ce catalyseur pour le craquage des éléments résiduels ou des aliments contenant des éléments résiduels lorsque la phase d'alumine formée à partir de la boehmite dispersible passive des impuretés nickel et vanadium.
Dodwell Glenn W.
Harris David H.
Lerner Bruce
Madon Rostam J.
Stockwell David M.
Engelhard Corporation
Sim & Mcburney
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