کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
689239 889599 2012 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamics and control of totally refluxed reactive distillation columns
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Dynamics and control of totally refluxed reactive distillation columns
چکیده انگلیسی

According to the mechanism of the reaction operation involved, reactive distillation columns are often designed to work in a totally refluxed operation mode. The totally refluxed operation mode makes the reflux drum interact solely with the reaction operation involved and retards considerably the dynamics of the latter. The resultant great difference in process dynamics between the reaction operation and the separation operation involved leads frequently to under-damped responses with the degree of under-dampness closely dependent on the inventory control of the reflux drum. With the tight inventory control of the reflux drum, the degree of under-dampness can be suppressed and this presents a favorable effect to process dynamics and controllability of the totally refluxed reactive distillation columns. Two hypothetical ideal reactive distillation columns with and without a side reaction, respectively, and a high-purity ethylene glycol reactive distillation column are employed to examine the unique dynamics and controllability of the totally refluxed reactive distillation columns. The results obtained are in good accordance with the above interpretation. The current work reveals the general behaviors of the totally refluxed reactive distillation columns and can be particularly useful in control system synthesis and design.


► We studied the dynamics and control of totally refluxed reactive distillation columns by three examples.
► Under-damped responses are found in process dynamics.
► It roots essentially from the totally refluxed operation mode.
► Tight control of reflux drum level improves the process dynamics and controllability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Process Control - Volume 22, Issue 7, August 2012, Pages 1182–1197
نویسندگان
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