摘要：以石油醚为萃取剂，对云南曲靖褐煤进行了褐煤蜡提取实验研究，采用单因素试验对褐煤蜡提取率影响因素进行选择，并用正交试验设计方法对提取条件进行了优化，对优化产物进行了酸值、皂化值测定。结果表明：对褐煤蜡提取率影响最大的因素是提取温度，其次是水分，提取时间影响最小。优化工艺为：含水量为6.32%，温度为45℃，时间为150min，料液比为1:4。在此条件下提取率达到4.97%，产物酸值、皂化值分别为：46.95 mg KOH/g、62.03 mg KOH/g。
关键词：褐煤；褐煤蜡；萃取；正交实验
Abstract: The experimental investigation of Yunnan Qujing brown coal is in order to prepare Lignite wax carried out in laboratory with petroleum ether as a solvent, The main factors that influenced the extraction of the Lignite wax were investigated , the acid value and the saponification value were characterized. The results showed that the extraction temperature affected the yield markably , secondly it is the moisture content, and the extraction time have minimal impact. The optimum conditions were determined as follows: moisture of brown coal is 6.32%, extraction temperature is 45℃, extraction time is 150 min, the ratio of coal and solvent is 1:4. Under the condition, the yield is up to5%. the acid value and the saponification value of the lignite wax were 46.95 mg KOH/g、62.03 mg KOH/g。
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