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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Determination and calculation for solubility of m-nitroaniline and its mixture in supercritical carbon dioxide
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Determination and calculation for solubility of m-nitroaniline and its mixture in supercritical carbon dioxide

机译：溶解度的测定和计算在超临界m-nitroaniline及其混合物二氧化碳

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摘要

Equilibrium solubility of m-nitroaniline and p-nitroaniline in supercritical carbon dioxide (SCCO2) is essential to design the process of SCCO2 extraction and to investigate the effect of each solute on the solubility in SCCO2 ternary system. However, the solubility data is not reported so far. We performed the solubility measurements at the temperatures of 308-328 K and in the pressure range of 11.0-21.0 MPa. The experimental results showed the solubility of m-nitroaniline and p-nitroaniline was enhanced in m-nitroaniline +p-nitroaniline +SCCO2 ternary system. The improvement factor (i), separation factor (mu) and separation efficiency (HE) in the ternary system were defined and calculated, and the best separation result could be obtained at 21.0 MPa and 328 K using SCCO2 extraction, where the separation efficiency was up to 90.9%. Based on the chemical association theory, a new model was developed to calculate the solubility of mixed solutes in SCCO2. The correlation result of the new model was tested by about 500 solubility data from 15 kinds of two solutes mixtures in SCCO2. The correlated result showed that the new model could achieve much better AARD (%) than those of frequently used Sovova and Sovova-T models. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
机译：平衡溶解度m-nitroaniline和对硝基苯胺在超临界二氧化碳(SCCO2)设计的过程是至关重要的SCCO2提取和调查的影响每一个溶质的溶解度SCCO2三元系统。迄今为止报道。在308 - 328 K的温度测量在11.0 - -21.0 MPa的压力范围。实验结果显示的溶解度m-nitroaniline和对硝基苯胺在增强m-nitroaniline +对硝基苯胺+ SCCO2三元系统。因子(μ)和分离效率(他)三元系统定义和计算可以在获得最好的分离结果21.0 MPa和328 K使用SCCO2提取,分离效率高达90.9%。在化学协会理论,一种新的模式开发了计算溶解度的在SCCO2混合溶质。新模型被大约500溶解度测试数据从15种两种溶质混合物SCCO2。模型能够实现更好的AARD (%)常用Sovova和Sovova-T模型。工程师。保留。

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