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首页> 外文会议>International Symposium on Supercritical Fluids Tome 1: Natural Products, Process amp; Equipment Development; 20030428-20030430; Versailles; FR >DYNAMIC STUDIES ON A SCF COUNTERCURRENT EXTRACTION PROCESS
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DYNAMIC STUDIES ON A SCF COUNTERCURRENT EXTRACTION PROCESS

机译：SCF逆流萃取过程的动力学研究

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摘要

The development of computational tools to describe industrial processes has increased in the last decades. Such tools are helpful to understand the flowsheet plants and/or just a single unit operation in a process. The consistent design of a supercritical fluid (SCF) extraction process involving countercurrent packed columns requires reliable and robust steady state and dynamic state models; the usage of tough computational tools that are able to simulate a SCF process can be very valuable to evaluate its viability. Here, we intend to present a dynamic simulation model of a countercurrent packed column operating at high pressure conditions. This model takes into account phase equilibria considerations, mass transfer and hydrodynamic characteristics. The model was developed and applied to a case study involving the fractionation of a model mixture of olive oil deodorised distillates. The composition profiles of the outlet streams from the packed column as well as hydrodynamic and mass transfer parameters were evaluated and their behaviour with time described by the dynamic model. Validation of the model was done by carrying out a series of experiments in a lab-scale continuous SCF extraction unit.
机译：在过去的几十年中，用于描述工业过程的计算工具的开发有所增加。这样的工具有助于理解流程图工厂和/或过程中的单个单元操作。涉及逆流填充塔的超临界流体（SCF）萃取过程的一致设计需要可靠且稳定的稳态和动态状态模型；使用能够模拟SCF流程的强大计算工具对于评估其可行性非常有价值。在此，我们打算提出一种在高压条件下运行的逆流填充塔的动态仿真模型。该模型考虑了相平衡，传质和流体动力学特性。该模型已开发，并应用于涉及橄榄油脱臭馏出物模型混合物分级分离的案例研究。评估了来自填充塔的出口物流的组成分布以及流体力学和传质参数，并通过动态模型描述了它们随时间的行为。通过在实验室规模的连续SCF提取单元中进行一系列实验来验证模型。

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