| 摘要 |
A low temperature rectification process for obtaining C2+ or C3+ hydrocarbons from feed gas mixtures, which contain essentially light hydrocarbons and, if desired, hydrogen or nitrogen is shown. The gas mixture is first cooled and subjected to phase separation, whereupon the gaseous fraction is work expanded and the liquid fraction is fractionated by rectification. The light overhead fractionated product of the rectification is mixed with the gaseous fraction of the phase separation of the feed gas mixture before its work expansion. |
