SEPARATIONS AND MATERIAL PROCESSING IN SOLUTIONS WITH DENSE GASES

By using thermodynamic phenomena in systems with dense gases, product properties such as morphology, size of particles, and fibers can be ta ilored to industrial needs. Separation of complex mixtures can be perf ormed. Processes that are conventionally operated in a number of costl y steps can be reduced to a few operations. This paper gives a phenome nological classification of such processes and explains the underlying principles. Operations developed on a laboratory scale as well as tho se already established in industry will be critically discussed and co mpared to conventional methods. An up-to-date review of the state of d evelopment starting from the emergence of these technologies in the ea rly 1980s is given.