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Abscheidung aus überkritischen Gasen
Author(s) -
Birtigh Andreas,
Brunner Gerd
Publication year - 1995
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330670703
Subject(s) - supercritical fluid , solvent , chemistry , isobaric process , supercritical carbon dioxide , precipitation , chemical engineering , chromatography , materials science , organic chemistry , thermodynamics , physics , meteorology , engineering
Precipitation from Supercritical Gases . The importance of processing substances with supercritical gases as a separation method has increased in recent years, particularly as a means of obtaining products produced without organic solvents. This article surveys the various methods of depositing substances from a supercritical phase. The surest method, i.e. that of reducing the pressure to subcritical values, involves a high energy consumption for recompression of the phase when performed on an industrial scale. For this reason, isobaric deposition methods (adsorption, absorption, membrane separation) were examined to establish their suitability for regenerating the supercritical solvent.