基于超氧压法考察储备柴油氧化特性研究

采用超氧压法(ASTM D5304)对三种不同类型不同来源储备柴油进行模拟储存试验,通过不同氧化周期、研究酸值、实际胶质含量、运动粘度等理化指标变化趋势,结果表明,在加速氧化条件下,柴油酸值、实际胶质、运动粘度增加,凝固点、闪点、铜片腐蚀理化指标变化较小;三种储备柴油氧化安定性较好,所测理化指标均未超过普通柴油技术标准(GB252)。

Study on Oxidation Characteristics of Reserve Diesel by Oxygen Overpressure

The simulated storage test of diesel oil from three different types of reserve diesel was carried out by oxygen overpressure method (ASTM D5304). The change trend of physic-chemical properties such as acid value, existent gum and viscosity was studied by different oxidation periods. The results show that, under the condition of accelerated oxidation, acid value, existent gum and viscosity of the diesel increase, condensation point, flash point and grade of copper corrosion change less. The stabilities of three kinds of diesel oil are better; the physic-chemical properties can meet ordinary diesel technical standards.