Underperformance of ULSD units may create supply problems in US

S.J. McGovern C.K. Lee PetroTech Consultants Mantua, NJ J.A. Zagorski Middough Consulting Inc. Philadelphia Although distillate desulfurization chemistry is fairly well understood, there are still inconsistencies in the operation of small-scale catalyst testing units and in the scale-up and design of large, high-conversion trickle bed reactors that produce ultralow-sulfur diesel (USLD). As a result, some units will perform better than expected, while others will not meet their design requirements, causing a potential shortfall in the production of ULSD.This article discusses the reasons for unit underperformance and outlines possible solutions.To meet new sulfur regulati...

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