武涵¹,陈学青¹,李蓓²,张超¹,刘秀伍¹,杨敬辉²,张继军¹

• 1:河北工业大学 化工学院，天津 300130
• 2:天津衡创工大现代塔器技术有限公司，天津 300384

摘要(Abstract)：

为了研究乙二醇-1,2-丁二醇在不同真空度下共沸组成的变化规律及差压精馏分离的可行性，使用改进的Othmer气液平衡釜测定了1~100 kPa下乙二醇-1,2-丁二醇二元体系的气液平衡数据，均通过了热力学一致性检验。分别采用Wilson、NRTL和UNIQUAC方程对不同压力下的气液平衡数据进行整体关联，结果表明，UNIQUAC方程计算精度更高，可适用于1~100 kPa下的相平衡计算。采用UNIQUAC方程计算了不同压力下乙二醇-1,2-丁二醇的共沸组成，共沸组成中乙二醇的摩尔分数随压力的降低呈非线性增加。操作压力由100降低至1 kPa时，共沸组成中乙二醇的摩尔分数的变化可达到12%，推断乙二醇-1,2-丁二醇具有差压精馏分离的可行性。

关键词(KeyWords)： 气液平衡;乙二醇;1,2-丁二醇;Wilson方程;NRTL方程;UNIQUAC方程

Abstract:

Keywords:

基金项目(Foundation): 天津市科技计划项目(21YDTPJC00880)；河北省“巨人计划”第三批创新创业团队(161082)。

作者(Author): 武涵¹,陈学青¹,李蓓²,张超¹,刘秀伍¹,杨敬辉²,张继军¹

DOI: 10.3969/j.issn.1003-9015.2022.00.012

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