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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >A Rigorous Minimum Energy Calculation Method for a Fully Thermally Coupled Distillation System
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A Rigorous Minimum Energy Calculation Method for a Fully Thermally Coupled Distillation System

机译：全热耦合蒸馏系统的严格最小能量计算方法

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摘要

Previously, Tanskanen and Pohjola (2000) and Tanskanen and Malinen (2005) have presented a method of rigorous minimum energy calculation for non-ideal multicomponent distillation. The method is based on column simulation with a large number of equilibrium stages to mimic infinitely high columns, and it has been successfully tested with simple distillation column systems. In this paper the rigorous minimum energy calculation method is extended to a fully thermally coupled distillation column system, also known as a Petlyuk column. This paper introduces not only the theoretical background of the applicable solving strategy, but also practical and useful solving tools capable of solving complex distillation column models. In the solving procedure, a modified bounded Newton homotopy method is used to detect the optimum point of operation for the column system, which is described with a full set of MESH equations. The results are promising and indicate that the numerical challenges encountered when rigorously solving complex distillation column problems can be tackled by utilising a modern numerical solving approach.
机译：以前，Tanskanen和Pohjola（2000）以及Tanskanen和Malinen（2005）提出了一种针对非理想多组分精馏的严格最小能量计算方法。该方法基于具有大量平衡阶段的色谱柱模拟，可模拟无限高的色谱柱，并且已通过简单的蒸馏塔系统成功进行了测试。本文将严格的最小能量计算方法扩展到完全热耦合的蒸馏塔系统，也称为Petlyuk塔。本文不仅介绍了适用的求解策略的理论背景，而且还介绍了能够求解复杂的蒸馏塔模型的实用且有用的求解工具。在求解过程中，使用改进的有界牛顿同态方法来检测色谱柱系统的最佳操作点，并用全套MESH方程进行描述。结果令人鼓舞，表明通过使用现代数值求解方法可以解决在严格解决复杂蒸馏塔问题时遇到的数值难题。

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