化工学报Issue(11)：4476-4484,9.DOI:10.11949/j.issn.0438-1157.20150447
带有内部热集成的多储罐间歇精馏全回流操作
Internal heat integrated multivessel batch distillation with constant total reflux operation
摘要
Abstract
Batch distillation is a highly energy inefficient process. To reduce its energy consumption, an internal heat integrated multivessel batch distillation with constant total reflux operation (IHIMVBD) is proposed for separation of binary mixtures. The rectifier surrounded by a jacketed reboiler concentrically is operated at a higher pressure compared to that in the jacketed reboiler, so the heat transfers from the high pressure rectification tower to the low pressure still through the internal wall. For this purpose, an isentropic compression system is installed in the reboiled vapor line. In order to improve the thermodynamic and economic performance, an intensified IHIMVBD (Int-IHIMVBD) scheme is developed by introducing overhead vapor recompression mechanism in the IHIMVBD structure. This scheme is to additionally utilize the latent heat of compressed overhead vapor for vaporizing the reboiler liquid. The features of the IHIMVBD system and its intensified form are illustrated by separating a binary mixture of ethanol andn-propanol. The Int-IHIMVBD configuration shows promising energy saving and economic potential over the IHIMVBD and MVBD.关键词
多储罐间歇精馏/全回流/内部热集成/蒸汽再压缩/节能/经济/二元混合物Key words
multivessel batch distillation/total reflux/internal heat integration/vapor recompression/energy saving/economics/binary mixture分类
化学化工引用本文复制引用
赵朔,白鹏..带有内部热集成的多储罐间歇精馏全回流操作[J].化工学报,2015,(11):4476-4484,9.
