With the U.S. refining industry entering the reformulated gasoline era, a significant shift in the disposition of refinery light olefins (C3-C5) Must take place. 1 2 In this effort, there will be a substantial realignment of the alkylation unit's olefin feedstock, according to Stratco Inc. of Leawood, Kan. Isobutene will be upgraded to methyl tertiary butyl ether (MTBE) to help provide the oxygen required for reformulated gasoline. Some of the propene that has historically been polymerized into gasoline will be directed to alkylation. Stratco sees the major change in light olefins processing as the upgrading of pent...

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