SULFUR-SOLVING COMPOSITION AND METHOD FOR PREVENTION OR REMOVAL OF PIPELINE SULFUR PLUGS Russian patent published in 1994 - IPC

FIELD: oil-processing industry. SUBSTANCE: composition may includes liquid or gaseous mercaptan of the formula R₁SH wherein R₁ is alkyl, alkylaryl, aryl, cycloalkyl, hydroxyalkyl, alkoxyalkyl, thioalkyl, or thioaryl, with alkyl groups having of 1-24 carbon atoms; water-insoluble amine of the general formula R₂R₃NH wherein R₂ and R₃ each independently is alkyl, alkylaryl, aryl, cycloalkyl, hydroxyalkyl, alkoxyalkyl, with alkyl groups having of 1-24 carbon atoms or bonded with nitrogen atom in the heterocycle; polyoxyalkyleneamine or polyoxyalkylenepolyamine or amine of the formula wherein R₄ and R₅ each independently is alkyl, aryl, hydroxyalkyl, alkylaryl, alkoxyalkyl, with alkyl groups having of 1-25 carbon atoms; polyethylene glycol or its ether of the formula wherein R₆ is hydrogen, alkyl, aryl or alkylaryl, with aryl groups having of 1-24 carbon atoms, and X and Y each independently is of 0 to 24 provided that X or Y is at least 1. The resulting composition is diluted with diesel-fuel oil or condensed oils. The method for prevention or removal of pipeline sulfur plug includes pumping the thus-obtained composition. EFFECT: increased effectiveness. 2 cl, 1 tbl