Treatment of coal tar emulsions
OwnerSamuel Cukierinventor
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Abstract
The present invention relates to a process for the treatment of stable emulsions of water and quinoline insolubles in coal tar comprising thoroughly mixing the coal tar with at least one of a specific class of surface-active compositions, followed by a separation of water and quinoline insoluble components from the mixture. The invention also relates to a method of eliminating or minimizing the build-up of coal tar-derived deposits on surfaces in contact with the coal tar.
Claims12
A process for treating a stable emulsion of coal tar material containing water and quinoline insolubles, comprising mixing a surface active composition with said material, so as to facilitate the segregation of at least a portion of at least one of said water and said quinoline insolubles from said mixture, where said surface active composition is chosen from the class of compounds having the general formula CH.sub.3 (CH.sub.2).sub.x CH.sub.2 (OCH.sub.2 CH.sub.2).sub.y OSO.sub.3.sup.- M.sup.+ where the average value of x is in the range 6.5 to 13, y is at least 1.5, and M.sup.+ represents one of sodium and ammonium ions.
Dependencies are inferred from the claim text.