The separation of methanol-chloroform mixture, a minimum-boiling azeotrope, is performed using pressure- swing distillation process via process simulation. In this study, the steady-state optimization was carried out using PRO/II with PROVISION v.10. The two different column configurations (low-to-high pressure and high-to-low pressure) were compared wherein the positions of the low-pressure column and high-pressure column were operated interchangeably to attain an optimized design. Additionally, different heat-integration configurations (partial heat- and full heat-integration) were applied to lessen the overall utility consumption. It was determined that the low-to-high pressure column configuration provided a more optimized result for all heat-integrated systems as compared to high-tolow pressure column configuration. Application of heat-integration further decreases the cooling water and steam consumption by 38.86% and 35.74%, respectively, for partial heat-integrated system, and by 44.58% and 41.01%, respectively, for full heat-integrated system.

中文翻译：

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使用变压蒸馏分离甲醇-氯仿混合物：建模和优化

甲醇-氯仿混合物（一种最低沸点的共沸物）的分离是通过过程模拟使用变压蒸馏工艺进行的。在这项研究中，稳态优化是使用 PRO/II 和 PROVISION v.10 进行的。比较了两种不同的塔配置（低压到高压和高压到低压），其中低压塔和高压塔的位置可互换操作以获得优化设计。此外，还应用了不同的热集成配置（部分热集成和完全热集成）以减少整体公用事业消耗。经确定，与高压至低压塔配置相比，低压至高压塔配置为所有热集成系统提供了更优化的结果。