Study on the hydrogenated method of aromatics in 6# solvent oil

The 6 # solvent oil was hydrogenated by nickel- aluminum catalyst in the conventional hydrogenation reactor.The single-factor tests and the response surface methodology was used to confirm the optimal conditions of hydrogenation such as hydrogenation pressure, hydrogenation temperature, hydrogenation time, stirring speed and catalyst addition.The optimal condition of the hydrogenation: hydrogenated pressure was 0.61MPa, the temperature was 81℃, the time of reaction was 70min, stirring speed was 150r /min and the catalyst was 3%, dearomatization rate was 96.3%.Before the hydrogenation the content of aromatic hydrocarbon existing in the solvent oil was 15500μg /g while reduced to less than 100μg /g by hydrogenated.This method effectively reduced the content of aromatic in the leaching oil.