کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
154512 456842 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Slope curve method for the analysis of separations in extraction columns of infinite height
ترجمه فارسی عنوان
روش منحنی شیب برای تحلیل جدایی در ستون های استخراج ارتفاع بی نهایت
کلمات کلیدی
طراحی مفهومی، استخراج ضد جریان، روش کوتاه کردن، تجزیه و تحلیل خرج کردن، روش هندسی، روش منحنی شیب
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• A new “slope curve method” for the conceptual design of extraction columns is described.
• The method easily finds all feasible product compositions.
• Only LLE data needed as input.
• Limitations by internal pinches can be quickly identified.

A new method for the conceptual design of counter-current extraction columns, the slope curve method (SCM), is presented. It is a graphical method based on the equilibrium stage model and developed here for ternary mixtures. The well-known stage-to-stage construction in the ternary phase diagram is replaced by a concise representation in the so-called slope diagram. In that diagram, the slope curve represents the tie lines and operating lines represent material balances. Infinite column height is assumed so that for given feed and solvent composition, the only remaining degree of freedom is the solvent-to-feed ratio. Varying that parameter, all feasible solutions are obtained in the slope diagram. The corresponding product compositions can be reconstructed. Using the method, it is readily shown that internal pinches only occur for certain classes of mixtures, which can be readily identified based on an analysis of the shape of the slope curve. As the SCM yields a complete survey of all feasible solutions it is particularly suited for feasibility studies in conceptual design as well as for obtaining general insights in extractive separations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 143, 2 April 2016, Pages 105–113
نویسندگان
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