FCC catalysts for feeds containing nickel and vanadium

US6716338B2 · kind B2 · utility

Assignee

• Engelhard Corporation · US

Inventors

• Rostam Jal Madon · Flemington, US
• David H. Harris · Mountainside, US
• Mingting Xu · Edison, US
• David Stockwell · Middlesex, US
• Bruce A. Lerner · Princeton Junction, US
• Glenn W. Dodwell · Bartlesville, US

Key dates

• Filing date: Jul 8, 2002
• Grant date: Apr 6, 2004
• Expiry date: Jul 8, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2300/107
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

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 calcined 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.