针对二甲醚生产过程中的汽液相平衡问题,本文提出了适于描述含CO2、DME和CH3OH体系的NRTL-PR模型组合,并以此模型计算了大量关于CO2-DME-CH3OH体系的三元VLE数据,绘制出几组等温、等压三元相图.可以认为,此模型得到的数据和相图能准确地反映含二甲醚体系的VLE关系,是实际生产工艺的研究与开发的重要基础.
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