دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a process of petroleum refining in which straight-run, cracked, or mixed naphthas are passed over a solid catalyst at elevated temperatures and moderate pressures in the presence of added hydrogen or hydrogen-containing gases. The main chemical reactions are dehydrogenation and aromatization of the nonaromatic constituents of the naphtha to form either high-octane motor fuel or highgrade aviation gasoline high in aromatic hydrocarbons such as toluene and xylenes. Ninety percent of die sulphur contained in the naphtha is removed.