基于ELJ势能函数状态方程预测聚醚类物质在高温高压条件下的密度
何思源;卢银彬;吕涛;
摘要(Abstract):
聚乙二醇类物质具有辛烷值高、污染性小等优点,在石油化工领域作为柴油燃料添加剂等用途被广泛使用。文章收集大量文献,利用乙二醇乙醚、二甘醇甲醚、二甘醇乙醚、四甘醇单甲醚、二甘醇二甲醚、二甘醇二乙醚、三甘醇二甲醚与四甘醇二甲醚8种聚醚类物质在高温、高压下的PVT试验数据,基于ELJ势能函数状态方程对聚醚类物质在高温、高压条件下的密度进行关联计算,根据PVT试验数据回归得到ELJ状态方程下的方程系数。结果表明,密度预测值与文献试验数据间的绝对平均偏差为0.017%,取得良好的预测效果,能够满足工程应用的实际需要。
关键词(KeyWords): 聚醚类物质;ELJ势能函数状态方程;密度预测
基金项目(Foundation): 陕西省自然科学基金(2020JQ-772)
作者(Authors): 何思源;卢银彬;吕涛;
DOI: 10.19301/j.cnki.zncs.2022.04.002
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