Process for improving the color and oxidation stability of hydro

Mineral oils: processes and products – Chemical conversion of hydrocarbons – With preliminary treatment of feed

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208 49, 208 57, 208 58, 208 97, 208210, 208211, 208212, 208213, C10G 6512, C10G 4500

Patent

active

047552808

ABSTRACT:
A process for improving the color and oxidation stability of feed characterized as an admixture of liquid hydrocarbon compounds, inclusive of fused multi-ring aromatic and hydroaromatic hydrocarbons. This feed, which boils within a range of from about 224.degree. C. to about 538.degree. C. and contains moderate to high concentrations of organic sulfur and organic nitrogen compounds, is (1) hydrotreated over a hydrotreating catalyst at hydrotreating conditions, or (2) hydrotreated over a hydrotreating catalyst at hydrotreating conditions and the high boiling product therefrom hydrocracked over a hydrocracking catalyst at hydrocracking conditions, to obtain a low sulfur, low nitrogen product which is contacted as a feed in the presence of hydrogen, over a catalyst comprised of elemental iron and one or more alkali or alkaline-earth metals components at hydrogen partial pressure and temperature sufficient to improve product color, or stablize the product against light and oxygen degradation, or both.

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patent: 4451354 (1984-05-01), Stuntz

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