CLEAN PROCESSING WITH SUPERCRITICAL FLUIDS

摘要

The way from fundamental properties to process verification for industrial application is most important. It is shown how flexible supercritical fluids can be used for processing materials. The application of supercritical fluids to mass transfer processes, phase transition processes, reactive systems, materials related processes, and nano-structured materials as has been reported in the last years shows a wide variety of processing steps, some already of industrial capacity, many other still under development. Beside extraction this includes impregnation and cleaning steps, multistage countercurrent separation, particle formation, coating and many reactive systems like hydrogenation, biomass gasification, and supercritical water oxidation. Polymers are modified with supercritical fluids and colloids and emulsions, as well as nanostructured materials show interesting phenomena which can be industrially exploited. To succeed herewith, the properties of supercritical fluids in combination with the materials processed must be clearly determined and fundamental knowledge of the complex behavior made easily available. Relying on a recent review [1], development and application to industrial processes in the context of own work is discussed.