Separation of Sulfur Compounds from Mineral Oil Fractions

Abstract

Prolonged calcining at 600°to 700°C. may improve the ability of an alumina to remove sulfur compounds from aromafic fractions of mineral oil. Nickelnickel oxide supported on silicaalumina is excellent for removing sulfur compounds from hydrocarbons.

Interrelated Effects of Oil Components on Oxidation Stability

“…Three oil stocks were used: a naphthenic and a paraffinic oil of low sulfur content, and a paraffinic heavy gas oil of high sulfur content [Table I, and Table I of (7)]. The low-sulfur stocks were separated into saturates and mono-, di-, and trinuclear aromatics (7).…”

“…Three oil stocks were used: a naphthenic and a paraffinic oil of low sulfur content, and a paraffinic heavy gas oil of high sulfur content [Table I, and Table I of (7)]. The low-sulfur stocks were separated into saturates and mono-, di-, and trinuclear aromatics (7). No attempt was made to isolate the more highly condensed aromatics because of their relatively low concentration, and the difficulty of obtaining them in high purity.…”

“…'X'he presence and nature of "natural inhibitors'' in mineral oils have interested investigators for years. These inhibitors have been thought to be polynuclear aromatics (2,8,9), sulfur compounds (3-3), or both; some synthetic compounds of these classes show this property (7,3,8). However, because it has not been possible to separate the aromatics of mineral oils from the attendant sulfur compounds by physical means, the inhibition effect has not been clearly defined.…”