Processes for producing propylene from paraffins

US9051230B2 · kind B2 · utility

Assignee

• UOP LLC · US

Inventors

• Paul A. Sechrist · Des Plaines, US
• Gregory R. Werba · Arlington Heights, US
• Mohamed S. M. Shakur · Hoffman Estates, US
• Steven P. Lankton · Wheeling, US
• Steven C. Kozup · Chicago, US
• Bing Sun · Guojiafang, CN

Key dates

• Filing date: Apr 20, 2011
• Grant date: Jun 9, 2015
• Expiry date: Jul 12, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2523/42
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Embodiments of processes for producing propylene from paraffins are provided. The process comprises the steps of combining an effluent that comprises propylene and propane from a paraffin dehydrogenation reactor with an offgas stream that comprises propane to form a combined effluent stream. The combined effluent stream is separated into a propylene product stream and a propane-rich recycle stream. The propane-rich recycle stream is introduced to the paraffin dehydrogenation reactor operating at dehydrogenation conditions to convert propane in the propane-rich recycle stream to propylene.