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Micro-Contactor for Extraction and Permeation

用于萃取和渗透的微接触器

基本信息

批准号：
251320046
负责人：
Professor Dr.-Ing. Hans-Jörg Bart
金额：
--
依托单位：
Lehrstuhl für Thermische Verfahrenstechnik (TVT)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2018-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/251320046?language=en
关键词：
Micro Contactor Extraction Permeation

项目摘要

The objective of this project is an experimental and theoretical investigation of different reactive mass transfer test systems in a nondispersive, microstructured counter-current apparatus. There it is possible to perform kinetic experiments with very small sample volumes in order to quantify diffusion and/or reaction limited mass transfer resistances under well-defined constraints (i.e. geometry, hydrodynamics). After construction of the micro-contactor, an evaluation of the hydrodynamic limits and modeling the reactive mass transfer for standardized EFCE test system (zinc/di-(2- ethylhexyl)phosphoric acid) in the previous period was performed. The developed methodology will be validated for the two model substances like germanium, as a valuable metal in hydrometallurgy, and mandelic acid, as chiral test substance in pharmacy. This will be done for reactive extraction and liquid-membrane-permeation (LMP), where reactive mass transfer phenomena are still not fully understood and predictable. The micro-structured dimensions allow an easy implementation of on-line sensors (e.g. confocal Raman-microscopy) for a non-invasive online-analysis of the extraction kinetics. The microchannel can be screened in ¿m range in all three dimensions by an automated mechanical shift unit producing local concentration profiles. Additionally, this method yields quantitative and as well as chemical structure information (in organic, as well as in aqueous systems). Both solutes have diametrical characteristics compared to zinc (increasing impact of reaction and diffusion respectively) and serve as a basis for recovery of other solutes when using this new developed methodological approach. A potential user will be enabled in an early process design stage to judge process operability and technology (LMP or extraction to be used). The results of the continuous tests serve as basis for fast and safe design (microcontactor, non-dispersive operation) and numbering-up allows higher throughputs at minimum risk (e.g. risky high-voltage emulsion splitting with LMP is not necessary).

本项目的目的是在非色散、微结构逆流装置中对不同反应性传质测试系统进行实验和理论研究。在那里，可以用非常小的样品体积进行动力学实验，以便在明确定义的约束（即几何，流体动力学）下量化扩散和/或反应有限的传质阻力。在构建微接触器后，对标准化EFCE测试系统（锌/二-（2-乙基己基）磷酸）进行了水动力极限评估和反应传质建模。所开发的方法将对两种模型物质进行验证，如湿法冶金中的贵重金属锗和药学中的手性试验物质扁桃酸。这将用于反应性萃取和液膜渗透（LMP），其中反应性传质现象仍未完全理解和预测。微观结构尺寸允许易于实现在线传感器（例如共聚焦拉曼显微镜），用于提取动力学的非侵入性在线分析。微通道可以通过自动机械移位装置在所有三个维度上筛选在¿m范围内产生局部浓度曲线。此外，该方法产生定量和化学结构信息（在有机体系中，以及在水体系中）。与锌相比，这两种溶质都具有直径特性（分别增加了反应和扩散的影响），并且在使用这种新开发的方法时，可以作为回收其他溶质的基础。潜在用户将在工艺设计的早期阶段判断工艺的可操作性和技术（要使用的LMP或提取）。连续测试的结果作为快速和安全设计（微接触器，非分散操作）的基础，并且编号允许在最小风险下获得更高的吞吐量（例如，不需要使用LMP进行高风险的高压乳化分裂）。