Multi-stage oxidative dehydrogenation process with inter-stage cooling

US10035740B2 · kind B2 · utility

Assignee

• TPC Group, LLC · US

Inventors

• Clifford A. Maat · Pearland, US
• Joseph G. Duff · League City, US
• Liana Caciula · Houston, US
• Michael O. Nutt · Pearland, US
• Robert Confair · Friendswood, US
• Mark P. Kaminsky · Winfield, US
• Jillian M. Horn · Decatur, US
• Gus K. Georgeton · Friendswood, US

Key dates

• Filing date: Mar 7, 2014
• Grant date: Jul 31, 2018
• Expiry date: Oct 23, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method of oxidatively dehydrogenating a dehydrogenation reactant includes providing a first gaseous feed stream to a first adiabatic, catalytic reaction zone with less than a stoichiometric amount of oxygen and superheated steam, oxidatively dehydrogenating dehydrogenation reactant in said first adiabatic, catalytic reaction zone and subsequently cooling the effluent, adding additional oxygen and reacting the effluent stream in at least one subsequent adiabatic reaction zone. The dehydrogenation system enables higher conversion and yield per pass and in some cases greatly reduces steam usage and energy costs. In a preferred integrated process, ethylene is converted to n-butene which is then oxidatively dehydrogenated to butadiene.