Lummus Technology Inc.

David C Grauer

Joel M Cizeron

Fabio R Zurcher

Jarod McCormick

Guido Radaelli

Daniel Rosenberg

Satish Lakhapatri

David Sheridan

Franciscus J A Martens

Gregory J Turk

Rong Fan

The present disclosure provides systems and methods for producing olefins via an oxidative coupling of methane (OCM) process. The systems and methods may comprise the use of a staged process comprising at least one non-adiabatic section that is in thermal communication with a heat transfer medium and at least one substantially adiabatic section. The systems and methods may also comprise the use of a diluent stream which may improve methane conversion in an OCM reactor and an ethylene/ethane ratio in a post-bed cracking unit. The methods and systems may further comprise injecting oxygen (O) and a paraffin into a gas stream containing a radical transfer agent to provide a reaction mixture. The reaction mixture may be held in a vessel for a time period greater than an auto-ignition delay time (AIDT), such that the reaction mixture may ignite to liberate heat and convert to a product mixture comprising olefins.

Systems and methods for the oxidative coupling of methane

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San Francisco, CA, United States of America

David C Grauer