کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
172932 458569 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strategies for the robust simulation of thermally coupled distillation sequences
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Strategies for the robust simulation of thermally coupled distillation sequences
چکیده انگلیسی

This paper presents a novel strategy for the simulation of thermally coupled distillation sequences using process simulators. First, we show that the two side stream connections involved in a ‘thermal couple’ can be accurately substituted by a combination of a material stream and heat flow; enabling a sequence of thermally coupled distillation columns to be simulated without recycle streams, similar to conventional simulations of zeotropic distillation sequences. In fact, using this method, a sequence of thermally coupled distillation columns is not more difficult to converge than other distillation systems without recycles. Furthermore, in most cases, this approach introduces negligible errors, and provides excellent starting points for rigorous simulations of actual thermally coupled systems with recycle streams.Different examples, including mixtures of hydrocarbons (C4s–C5s–C6s), aromatics (BTX), alcohols, non-ideal azeotropic systems (acetone, benzene, chloroform) and systems involving 4 or 5 components are presented. In addition, various thermodynamically equivalent configurations, corresponding to different alternatives for implementing this approach, are discussed.


• We present a novel strategy for the simulation of thermally coupled distillation.
• TCD can be simulated without recycle streams, similar to conventional distillations.
• Mixtures of hydrocarbons, aromatics, alcohols, non-ideal azeotropic are presented.
• This approach introduces negligible errors.
• This strategy provides excellent starting points for rigorous simulations in all cases.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computers & Chemical Engineering - Volume 36, 10 January 2012, Pages 149–159
نویسندگان
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