| 摘要 |
The invention relates to a process for extracting fixed and mineral oils, and/or essential oils, from materials using a process of solvent extraction which is performed under pressure. The solve nt is iodotrifluoromethane or iodotrifluoromethane in combination with a co-solvent. The invention also relates to an apparatus fo r performing the extraction of fixed and mineral oils, and/or essential oils. Substantial reductions in or elimination of the normally high latent heat of solvent evaporation may also be achieved simply by raising or lowering the temperature of or simply by addin g or removing "sensible" heat from the solvent at appropriate points during its re-circulation.
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