Environment & Safety Gas Processing/LNG Maintenance & Reliability Petrochemicals Process Control Process Optimization Project Management Refining

Choi, A.

ExxonMobil Chemical Co., The Hague, Netherlands

Arnold Choi is the Technology Leader for the Rotterdam Chemical Plant in the Netherlands. He joined ExxonMobil in 2003 as a process engineer and has since worked in various positions in multiple international locations within manufacturing and technology. Mr. Choi has held several leadership roles in turnarounds, project development, execution and startups, and has held global leadership roles in multiple aromatics technology areas. He now leads improvement initiatives in Rotterdam and supports major global ventures. Mr. Choi holds a BS degree in chemical engineering and applied chemistry from the University of Toronto.

A new liquid-phase isomerization process for xylene loop debottleneck and energy savings

Reliance Industries Ltd.: Mhatre, S.  |  Warke, V.
ExxonMobil Chemical Co.: Choi, A.  |  Molinier, M.  |  Saple, A.

In a typical xylene loop, C<sub>8</sub> aromatics are fractionated out of a heavy reformate C<sub>8</sub>+ aromatics stream and collected in the xylene column overhead. Then, paraxylene (PX) from the C<sub>8</sub> aromatics stream is recovered as product—usually by an adsorption or crystallization process—in the PX recovery section.

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