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Analysis of Extraction Separation in a Cascade of Mixing-Settling Extractors in a Recirculation Liquid-Liquid Chromatography Mode
Theoretical Foundations of Chemical Engineering ( IF 0.8 ) Pub Date : 2022-07-06 , DOI: 10.1134/s0040579522030095
A. E. Kostanyan, Yu. A. Klychevskikh, N. A. Milevskii, T. S. Safonov, A. A. Voshkin

Abstract

Previously, a method for increasing the efficiency of extraction separation of liquid mixtures has been proposed, in which a solution of a mixture of components is introduced as a series of pulse injections in a cascade of mixing-settling extractors operating in the eluent chromatography mode. The present study is further development of this method as applied to separation in a cascade of mixing-settling extractors operating in a recirculation chromatography mode. A mathematical model was developed, and periodic and continuous processes of extraction separation were analyzed for conditions with a mixture of components loaded into a cascade of mixing-settling extractors in the form of a series of successive pulse injections separated by short time intervals. Experiments were performed on a cascade of mixing-settling extractors, which confirmed that the model is reliable. It was shown on some examples that the serial method of loading the solution into a closed circuit of extractors significantly increases the efficiency of separation.



中文翻译:

循环液-液色谱模式下混合-沉降萃取器级联萃取分离分析

摘要

以前,已经提出了一种提高液体混合物萃取分离效率的方法,其中将组分混合物的溶液作为一系列脉冲注射引入以洗脱色谱模式运行的混合沉降萃取器的级联中。本研究是该方法的进一步发展,该方法应用于以再循环色谱模式操作的级联混合沉降萃取器中的分离。建立了一个数学模型,并分析了萃取分离的周期性和连续过程的条件,其中组分混合物以短时间间隔分开的一系列连续脉冲喷射的形式加载到级联的混合沉降萃取器中。在级联混合沉降提取器上进行了实验,这证实了该模型是可靠的。一些例子表明,将溶液加载到萃取器的闭合回路中的串行方法显着提高了分离效率。

更新日期:2022-07-07
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