A high efficiency process and apparatus for extracting condensable vapors from a gas stream using a vortex tube expansion. The process comprises partially condensing a raw feed high pressure gas stream rich in condensable vapor in a high pressure condenser by an exchange of heat with a cooling medium...http://www.google.fr/patents/US5483801?utm_source=gb-gplus-shareBrevet US5483801 - Process for extracting vapor from a gas stream
