June 1999

Columns

HP Insight: How much sulfur is 'too much' for clean fuels?

In the first half of '99, U.S. refiners have been hit with some tough blows. Last month, troubles began brewing when California requested to be excused from using MTBE in the RFG program and proposed ..

Romanow, Stephany, Hydrocarbon Processing Staff

In the first half of '99, U.S. refiners have been hit with some tough blows. Last month, troubles began brewing when California requested to be excused from using MTBE in the RFG program and proposed a ban on this oxygenate. Now, another national major challenge is center stage – the Tier 2 sulfur rule. Officially, the Tier 2 fuel rule is out for comment. (Deadline for comments to EPA on this rule is Aug. 2, 1999.) Tier 2 is focused on reducing emissions from cars and light trucks, including the very popular sport utility vehicles (SUVs), minivans and pickup trucks. Under this rule, EPA will treat vehicles and fuels as a system. Two-sided effect. Tier 2 sets performanc

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