| Popis: |
Supercritical fluids (SCF) systems, though already established for some applications,1 may represent more important technologies in the future. The primary motivation for adoption of such processes was concern about and legislation against conventional solvents. SCFs are widely used in small-scale laboratory extraction and analysis2 and are already established for large-scale extraction of caffeine from coffee, flavors from hops, and many other such uses1 with plant sizes up to 50,000 tons per year throughput. A Philip Morris semicontinuous denicotinization plant is said to employ pressure chambers of 1.5-m diameter and 5-m height. The outlet gas is passed through activated carbon and recycled.1 |
