April 2020

Special Focus: Clean Fuels

Octane enhancement avoiding both high reformer severity and alkylation

An innovative refinery process arrangementa converts butane-rich, light paraffinic streams—preferably containing a high proportion of isobutane—into butylene by dehydrogenation.

Kauders, P., CDE Projects Ltd.

An innovative refinery process arrangementa converts butane-rich, light paraffinic streams—preferably containing a high proportion of isobutane—into butylene by dehydrogenation. This butylene-rich stream is then fed to olefin condensation (oligomerization) to produce a high-octane gasoline blendstock of high value, with low aromatics content and low vapor pressure. This patented arrangement opens the possibility of producing high-octane gasoline with low incremental investment, while eliminating the need for an alkylation unit. Byproduct hydrogen is available for refinery hydrotreating or other chemical needs. The process arrangement also enables the production of propylene, via co-dehydro

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