Alkylate is an important and valuable part of the U.S. gasoline pool, prized for its high octane, low volatility and low sulfur content. There are two primary catalysts that refiners can opt to use in the production of alkylate: hydrofluoric acid, or HF, and sulfuric acid, or H2SO4. Each is quite popular, with HF and sulfuric acid technologies each representing about half of domestic alkylation capacity — and with those shares varying significantly on a regional basis. While refiners have been safely operating both types of “alky” units for many decades, HF alkylation for some time has been in the crosshairs of the Environmental Protection Agency, which recently proposed that refiners be required to undertake extensive evaluations of potentially safer alternative technologies. It’s hard to know for sure, but if EPA’s proposed rule is made final it could ultimately force many refineries to make very costly changes — into the hundreds of million dollars per unit — or maybe even shut down entirely. In today’s RBN blog, we look at alkylate, how it’s made, and the potentially profound effects of the impending regulation.
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