Systematic Design of an Extractive Distillation for Maximum-Boiling Azeotropes with Heavy Entrainers
Systematic Design of an Extractive Distillation for Maximum-Boiling Azeotropes with Heavy Entrainers
复制标题
重共沸剂最大沸点共沸物萃取蒸馏的系统设计
DOI：
10.1002/aic.14908
复制
发表时间：
2015-11-01
期刊：
影响因子：
3.7
通讯作者：
Gerbaud, Vincent
中科院分区：
文献类型：
--
作者：
Shen, Weifeng;Dong, Lichun;Gerbaud, Vincent
萃取蒸馏是分离共沸混合物最有吸引力的方法之一。很少有人报道设计用于分离最高沸点共沸物的萃取蒸馏，也没有系统的方法用于筛选共沸物。本文提出了一种分离重质烃类共沸物的双塔萃取精馏设计方法。首先对具有潜在重链烷烃的共沸物进行了热力学可行性分析。然后，五个重要的属性被选择用于评价。使用模糊逻辑和开发隶属函数来计算所选属性的属性值。提出了一个综合评价指标，并生成了一个排名表。最后，从排名列表中选择前五名的制造商，并使用过程优化技术来进一步评估所选的制造商并生成最佳设计。所提出的方法的能力，说明使用分离的丙酮-氯仿共沸物与五个潜在的干扰。
Extractive distillation is one of the most attractive approaches for separating azeotropic mixtures. Few contributions have been reported to design an extractive distillation for separating maximum-boiling azeotropes and no systematic approaches for entrainer screening have been presented. A systematic approach to design of two-column extractive distillation for separating azeotropes with heavy entrainers has been proposed. A thermodynamic feasibility analysis for azeotropes with potential heavy entrainers was first conducted. Then, five important properties are selected for entrainer evaluation. Fuzzy logic and develop membership functions to calculate attribute values of selected properties have been used. An overall indicator for entrainer evaluation is proposed and a ranking list is generated. Finally, the top five entrainers from the ranking list have been selected and use process optimization techniques to further evaluate selected entrainers and generate an optimal design. The capability of the proposed method is illustrated using the separation of acetone–chloroform azeotropes with five potential entrainers.