In the proposed work we intend to find a novel method to achieve higher selectivities in thermal separation processes without chemical reaction, which exceed values of currently available apparatus. Our hypothesis is that the application of microstructures is the appropriate method. The challenging part will be the fundamental research of the design and evaluation of the microstructure. We intend to verify our assumption and method by a demonstrating microstructured device. The prior goals of the proposed project are (1) to achieve higher selectivities in thermal separation processes without chemical reaction, which exceed values of currently available apparatus, by means of the development of a novel micro apparatus; (2) to develop an appropriate analytical or numerical description of the physical process of the method for layout and evaluation of the novel apparatus. The approach of Micro Process Engineering (MPE) will be applied to achieve theses goals. Since MPE is researched for Reaction Technology, the research of physical transport phenomena in thermal separation processes with a gaseous and a liquid phase in microstructures will be new and exciting and requires a deep scientific study. The method can be applied for rectification and/or absorption. The project is divided into 4 phases: Phase 1: The main goal is to find the correlations and analytical formulations of the processes and the calculation of thermodynamics/phase equilibrium in the separation unit, which consists of microstructures. CFD simulations of the basic concept design serve to overhaul, revise and optimize the basic concept. Finally the design of the separation unit of the demonstrating microdevice is available. Phase 2: Based on the basic design of the separation unit a scale-out will be made in order to make a design of an apparatus for higher flow rates. For the design of the manifolds for both phases, CFD will be applied. Additionally, the whole apparatus design of the demonstrating microdevice is available, so that finally the construction of a prototype can be accomplished. Phase 3: A laboratory plant for testing is designed and tests of the microdevice are carried out with 3 different mixtures: 2 Distillation series: Methanol -Water, Cyclohexane - n-Heptan and 1 Absorption serial: Nitrogen-Water. Phase 4: By means of the laboratory tests, the efficiency of the method will be verified, which include the verification of the descriptions of the phase equilibrium and transport processes of Phase 1 and the determination of the actual selectivity. In summary, we intend to develop a new and more efficient method for thermal separation process without chemical reaction, which can be applied in fine chemicals and pharmaceutical industry. Since process intensification is becoming increasingly important, this project will have significant impact and may lead to significant improvements in the field of thermal separation.
|Effective start/end date||1/11/08 → 31/10/11|
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