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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >A comprehensive study on equilibrium and kinetics of morpholine extraction from aqueous stream with CA in toluene: Experimental evaluation, extraction model and parametric optimization employing desirability function
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A comprehensive study on equilibrium and kinetics of morpholine extraction from aqueous stream with CA in toluene: Experimental evaluation, extraction model and parametric optimization employing desirability function

机译：甲苯中Ca水流水流均衡和动力学综合研究：实验评价，提取模型和参数优化采用期望功能

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摘要

The present study explores the equilibrium and kinetics for the reactive extraction of morpholine, an important industrial reagent from its aqueous stream using capric acid, CA (extractant) in toluene (diluent). An equilibrium model that employs the mass action law was also developed to evaluate the optimum apparent equilibrium constants (KE), stoichiometric ratio (m) and physical constant (S). Equilibrium model was valid in representing the mechanism of morpholine extraction. Moreover, for the first time the study availed the simultaneous optimization of two significant response characteristics; extraction efficiency (%E) and loading ratio (Z) using Box-Behnken design (3(3)) employing multivariate desirability function. The statistical models predicted %E of 80.2 and Z of 0.64 for the optimum combination of process parameters as follows: C-MO = 5%, C-CAO = 5% and T = 303.15 K with the desirability of 0.947. Further, the intrinsic kinetics of the extraction model demonstrated that the reactions between morpholine and CA fall in regime 3 (fast chemical reaction in diffusion film), follows first order kinetics with respect to morpholine and displays exothermicity of the process as revealed from thermodynamic studies. The equilibrium and kinetic data is useful for the development, design and reliable scale-up of the extraction process. (C) 2018 Published by Elsevier B.V. on behalf of Institution of Chemical Engineers.
机译：本研究探讨了吗啉的反应性萃取的平衡和动力学，该研究是使用甲苯（稀释剂）中的癸酸（萃取剂）中的水流中的重要产业试剂。还开发了一种采用大规模行动法的平衡模型，以评估最佳表观平衡常数（KE），化学计量比（M）和物理常数。均衡模型在代表吗啉萃取机制方面是有效的。此外，这项研究首次利用了两种重大响应特征的同时优化;使用多变量可归解功能的盒-Behnken设计（3（3））提取效率（％e）和负载比（z）。统计模型预测80.2和Z的％E为0.64，用于最佳的工艺参数组合，如下：C-Mo = 5％，C-CaO = 5％和T = 303.15k，其期望为0.947。此外，提取模型的内在动力学证明了吗啉和Ca之间的反应在制度3中（扩散膜中的快速化学反应），遵循一定的动力学相对于吗啉，并显示热力学研究中揭示的过程的放热。均衡和动力学数据对于提取过程的开发，设计和可靠扩大非常有用。 （c）2018由elsevier b.v出版。代表化学工程师机构。

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