| 摘要 |
1. A method for receiving low-aromatic kerosene oils and concentrate of naphthosulfonic salts from sulfonated kerosene oils. The method is distinctive in that a solution of 60 to 99 (preferably 85 to 92) parts by weight of salts of sodium and/or potassium naphthosulfonic acids with mean molecular mass 350 to 580 in kerosene oil is mixed with 1 to 40, preferably 8 to 15, parts by weight of monoethanolamine and/or diethanolamine and/or triethanolamine; some water may also be added to the solution, the proportion water to ethanol amines being 1:0,1 to 1:10; the mixture thus received is then treated with the process of sedimentation and/or centrifugal separation, preferably in the temperature of 50 to 70 degrees C, to separate the oil from the concentrate of naphthosulfonic salts.
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