Abstract In this experiment, regeneration of the used engine oil was obtained by the reaction of the deteriorated part in the lubricating oil with the sodium liquid ammonia solution as chemical reagent. The experimental results show that the optimal conditions are: the addition of the sodium liquid ammonia solution proportion is 3��2 mL(based on 100 g used oil ), refining temperature 40 ��,viscosity index 100�� And after the clay adsorption to improve the color degree of the regeneration oil, the various index of the recovered oil can meet the requirement of HVI standard.
2011, Vol. 28 
