Compatibility additive for fuel oil blends

C - Chemistry – Metallurgy – 10 – L

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C10L 1/14 (2006.01) C10L 1/24 (2006.01)

Patent

CA 1090129

ABSTRACT OF THE DISCLOSURE Petroleum fuel compositions having a kinematic viscosity ranging from about 40 Saybolt Seconds Universal at 38°C. to about 300 Saybolt Seconds Furol at 50°C., e.g. residual fuel oils of grade numbers 4, 5 and 6, which contain dispersed sedimentary asphaltic constituents are stabilized against sedimentation of said constituents by the addition of a minor but sediment-stabilizing proportion of an alkylaryl sulfonic acid having from about 10 to 70 carbons for example, C28-C32 monoalkyl benzene sulfonic acid. The sediment-stabilizing property of the alkylaryl sulfonic acid is particularly useful for blends of distillate petroleum fractions and residua (including reduced crude) wherein said blend contains from about 5 to about 15 weight percent of residua, based on the total weight of said blend.

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