Exxonmobil Chemical Patents Inc.

Andrew M Argo

James Richardson Lattner

Teng Xu

Christopher Lynn Becker

Cor F Van Egmond

Marcel Johannes Janssen

Jaimes Sher

Cornelis F Van Egmond

This invention is directed to methods for forming an olefin stream from a methanol stream. A lower grade methanol, such as chemical grade or crude methanol, can be used as feed to form the olefin stream. The process uses a relatively simple distillation type step to vaporize a portion of the methanol feed stream and send the resulting vapor stream to a reaction unit to form the olefin stream. In addition, the invention provides the ability to operate the downstream recovery units with reduced fouling or plugging due to the presence of fine solids components.

Oxygenate to olefin manufacture and recovery process

The present invention provides various processes for producing light olefins from methanol and ethanol, optionally in a mixed alcohol stream. In one embodiment, the invention includes directing a first syngas stream to a methanol synthesis zone to form methanol and directing a second syngas stream and methanol to a homologation zone to form ethanol. The methanol and ethanol are directed to an oxygenate to olefin reaction system for conversion thereof to ethylene and propylene.

Methanol and ethanol production for an oxygenate to olefin reaction system

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Albuquerque, NM, United States of America

Andrew M Argo