基于旋转氧弹法的柴油氧化安定性快速评定方法研究

摘要

The current method SH/T 0175 is not suitable for fast and simple evaluation of diesel fuel oxidation stability due to complex operation and long test period.A new fast way for the diesel oil oxidative stability is suggested based on the rotating oxygen bomb.The factors affecting repeatability and distinguishability are studied through single factor analysis and orthogonal experiments.The optional experiment conditions are screened out:100 ℃,800 kPa of oxygen pressure,5 mL of water,40 g of sample and 3.0 m of copper wire.The mathematical model to predict the total insolubles of diesel using the data of oxidation induction period and oxidation termination time are established.This method can be used to evaluate the oxidation stability of diesel fuel.%针对SH/T 0175方法操作比较繁琐、试验周期较长、不能对柴油氧化安定性进行快速、简易评定的问题,尝试利用旋转氧弹法建立新的柴油氧化安定性快速评定方法.通过单因素考察试验和正交试验研究了影响氧化诱导期和氧化终止时间测量结果重复性和区分性的相关因素,筛选出最佳试验条件,即氧压800 kPa、水量5 mL、温度100℃、试样量40 g、添加3.0m铜丝.建立了通过柴油氧化诱导期、氧化终止时间来预测不溶物含量的关联模型.该方法能够较好地评定柴油的氧化安定性.