Process for obtaining olefins from residual feedstocks

US6179993A · kind A · utility

Assignee

• Exxon Chemical Patents, Inc. · US

Inventors

• Noel M. Seimandi · Brussels, BE
• Tony T. Cheng · Seabrook, US
• Willibald Serrand · Buxheim, DE
• Mitchell Jacobson · West Orange, US
• Paul K. Ladwig · Dover, US
• John F. Pagel · Cedar Knolls, US
• Michael R. Parrish · Morristown, US
• Hans A. Weisenberger · Tervuren, BE

Key dates

• Filing date: Feb 21, 1997
• Grant date: Jan 30, 2001
• Expiry date: Feb 21, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/20
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for obtaining a substantial amount of olefinic products from a residual feedstock by use of a vapor short contact time conversion process unit comprised of a bed of fluidized heat transfer solids. The vapor short contact time process unit is operated at conditions which includes steam dilution to reduce partial pressure of hydrocarbon vapors and a vapor residence time less than about 0.5 seconds.