高校化学工程学报2016，Vol.30Issue(2)：292-298,7.DOI:10.3969/j.issn.1003-9015.2016.00.006
基于蒸汽再压缩的多储罐间歇精馏全回流操作
Vapor Recompression Scheme for Multivessel Batch Distillation with Constant Total Reflux Operation
摘要
Abstract
Multivessel batch distillation with constant total reflux operation (MVBD) is efficient and time-saving for separation of a binary mixture. Aiming to further improve its thermodynamic efficiency, the vapor recompression approach was introduced in MVBD, which was referred to as VRMVBD. The overhead vapor was compressed up to the necessary pressure for its condensation in the reboiler. The latent heat of compressed overhead vapor was utilized for vaporizing the reboiler liquid. This process indicates a decrease of energy requirements from external source. VRMVBD is accompanied with a compressor that runs at a fixed as well as variable speed. The features of VRMVBD were illustrated by separating a binary mixture of ethanol and n-propanol. In conclusion, VRMVBD appears overwhelmingly superior to MVBD in terms of thermal efficiency and economic performance. Moreover, the variable speed VRMVBD shows a better performance than that of the fixed speed VRMVBD. Compared with MVBD, the variable speed VRMVBD scheme secures a 77.62% and 38.71% reduction in energy consumption and total annual cost, respectively.关键词
多储罐间歇精馏/全回流/蒸汽再压缩/节能/经济/二元混合物Key words
multivessel batch distillation/total reflux/vapor recompression/energy saving/economics分类
化学化工引用本文复制引用
赵朔,白鹏..基于蒸汽再压缩的多储罐间歇精馏全回流操作[J].高校化学工程学报,2016,30(2):292-298,7.
