Mineral oils: processes and products – Refining – Gum or gum former removal
Patent
1981-09-08
1984-05-22
Gantz, Delbert E.
Mineral oils: processes and products
Refining
Gum or gum former removal
208293, 585811, 585856, C10G 2902, C07C 7177
Patent
active
044500696
ABSTRACT:
There is disclosed a method for upgrading of hydrocarbon mixtures, so as to reduce their content of gum precursors such as diolefins and pseudo-diolefins, and provide a resulting product mixture suitable for mild hydrogenation, for use as a motor fuel or as a feed stock to an extraction unit. The process comprises obtaining a hydrocarbon mixture containing about 60-90 wt. % of aromatic components, about 3-40 wt. % of dienes and pseudodienes, and monoolefins, and up to about 6 wt. % of relatively unreactive organic compounds, reacting this mixture with elemental sulfur in the approximate weight ratio of about 5-95 wt. % of the hydrocarbon mixture with about 95-5 wt. % of elemental sulfur, the reaction being carried out at a temperature in the range of 100.degree.-150.degree. C. for about 10 minutes to 24 hours with good mixing, removing the unreacted materials by distillation and separating a sulfur-hydrocarbon reaction product to provide the upgraded hydrocarbon mixture.
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Holcomb Dysart E.
Kidwell, Jr. Louis E.
Chaudhuri O.
Gantz Delbert E.
Pennzoil Company
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