Optimization of coal-based methanol distillation scheme using process superstructure method to maximize energy efficiency

Chengtian Cui, Xingang Li, Hong Sui and Jinsheng Sun

Energy, 2017, vol. 119, issue C, 110-120

Abstract: Despite the current methanol distillation system (MDS) touching a highly energy-efficient level, there are still opportunities to cut more corners when moving eyesight from heating media to electricity and work efficiency of rotary equipments. To simultaneously optimize this process for higher overall energy efficiency, methodologically an improved substitute pathway is herein proposed of corresponding process superstructure. In detail, it is an all-in-one integration of heat and work exchanger networks (HEN-WEN), exemplified by a 4-column double-effect methanol distillation scheme popular among Chinese coal-based factories. The completion of this work indicates a hope of potential reductions of pump electricity and reboiler steam consumption of the whole unit by further 68.38% and 15.83%, respectively.

Keywords: Methanol distillation; Process superstructure; Simulation; Optimization; Heat exchanger network; Work exchanger network (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (12)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:119:y:2017:i:c:p:110-120

DOI: 10.1016/j.energy.2016.12.065

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