煤液化残渣软化点测定方法研究

Study on test methods for softening point of coal liquefaction residue

采用环球法测定煤直接液化残渣的软化点,利用正交实验确定了实验的最佳分析条件为:样品粒度0.35 mm,热浴介质为甘油,热浴初始温度70℃,升温速率(5±0.5)℃/min。研究表明,升温速率是影响软化点测定结果准确度的关键因素,在实验过程中需严格控制。

The ring-and-ball method was adopted to test the softening point of coal liquefaction residue.The optimum condition for the determination of softening point was confirmed by orthogonal test,while the sample size is 0.35 mm,glycerol is taken as heat bath medium,heating rate is（5±0.5） ℃/min.The results show that heating rate that matters the most to test results need to be controlled strictly.