Fluid catalytic cracking catalyst manufacturing process

US6696378B2 · kind B2 · utility

Assignee

• Engelhard Corporation · US

Inventors

• Clark W. Gibson · Bainbridge, US
• Mitchell J. Willis · Macon, US
• George E. Gantt · Milledgeville, US
• Robert E. Barnes · Stratford, US
• David Stockwell · Middlesex, US

Key dates

• Filing date: Aug 31, 2001
• Grant date: Feb 24, 2004
• Expiry date: Nov 13, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J21/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An in situ process for making improved zeolitic fluid cracking catalysts by spray drying a mixture of (i) hydrous kaolin and/or metakaolin, and (ii) calcined aluminum source, said calcined aluminum source being derived from a pulverized, ultrafine kaolin, calcining the resulting microspheres to convert hydrous kaolin to metakaolin, and reacting microspheres composed of a mixture of metakaolin and calcined aluminum source with an alkaline sodium silicate solution. The weight percent of metakaolin in the calcined microspheres is greater than the calcined aluminum source content.