Robust dynamic simulation of three-phase reactive batch distillation columns
Robust dynamic simulation of three-phase reactive batch distillation columns
复制标题
三相反应间歇精馏塔的鲁棒动态模拟
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
W. Marquardt
中科院分区：
文献类型：
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作者：
S. Brüggemann;J. Oldenburg;Pingyi Zhang;W. Marquardt
非均相精馏塔的动态模拟是一项要求很高的任务，因为每个塔板上的液相数量会随着时间的推移而变化。模拟的成功取决于相数的快速、可靠和稳健的评估以及液相组成的正确初始化。在这项工作中，提出了一种灵活的仿真策略，从过程模型中的相位分裂和闪光算法。因此，在过程模型中不会发生不连续的模型切换，并且可以使用采用同时面向方程的模拟策略的标准工具来容易地模拟塔。相态评估采用快速可靠的同伦连续算法，该算法非常适合动态仿真，因为它将相稳定性问题分解为两个步骤，以最大限度地减少必要的计算工作量。并将该模拟策略应用于正丁醇和乙酸三相反应合成乙酸丁酯的过程。
The dynamic simulation of heterogeneous distillation columns is a demanding task because the number of liquid phases can vary over time on each tray. The success of the simulation depends on the rapid, reliable, and robust assessment of the number of phases and the correct initialization of the compositions of the liquid phases. In this work, a flexible simulation strategy is presented that decouples the phase split and flash algorithms from the process model. Therefore, no discontinuous model switching occurs in the process model, and the column can easily be simulated using standard tools employing a simultaneous equation-oriented simulation strategy. The phase state is assessed with a rapid and reliable homotopy−continuation algorithm that is well-suited for dynamic simulation because it decomposes the phase stability problem into two steps to minimize the necessary computational effort. The simulation strategy is applied to the production of butyl acetate from butanol and acetic acid in a three-phase ...