CPC C10G 31/08 (2013.01) [C08L 95/005 (2013.01); C10C 3/026 (2013.01); C10G 33/02 (2013.01); C10L 1/182 (2013.01); C10L 1/1814 (2013.01); C10L 1/328 (2013.01); C10G 2300/203 (2013.01); C10G 2300/205 (2013.01); C10L 2250/082 (2013.01)] | 21 Claims |
1. A treated hydrocarbon emulsion comprising:
crude oil;
water having a pH of 6 or below;
contaminants comprising metal naphthenates; and
a composition in an effective amount to transfer contaminants from a hydrocarbon phase to an aqueous phase, the composition comprising a water-soluble component selected from the group consisting of polyhydroxy carboxylic acids having 5 to 12 carbon atoms selected from the group consisting of glucaric acid, iduronic acid, galacturonic acid, glucuronic acid, digalacturonic acid, and combinations thereof, ammonium salts thereof, alkali metal salts thereof, where the polyhydroxy carboxylic acid has a boiling point in the range of 389 to 559° C. and does not include gluconic acid, and mixtures of any of these.
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