An improved, membrane-based method of treating gas evolved during natural gas liquids (NGL) stabilization, to separate the very light hydrocarbon gases, methane in particular, from the heavier hydrocarbons. The membrane acts as a demethanizer and establishes a vapor/liquid equilibrium during phase...http://www.google.fr/patents/US5772733?utm_source=gb-gplus-shareBrevet US5772733 - Natural gas liquids (NGL) stabilization process
