Refiners have many options to convert high-aromatic streams into ULSD

C.K. Lee, Steve J. McGovern - PetroTech Consultants, Mantua, NJJohn A. Zagorski - Middough Consulting Inc.,PhiladelphiaUS refiners face both a challenge and an opportunity in converting high-aromatic streams, such as FCC light cycle oil or coker light gas oil , into low-sulfur products for use in the ultralow-sulfur diesel (ULSD) pool or other distillate products.Current and future aromatic or cetane specifications can limit the amount of these streams that can be blended into ULSD.Refiners can use different processing options to convert these low-quality streams successfully into salable products:Low-pressure hydrotreating (<500 psi hydrogen partial pressure). Coprocessing limited amo...

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