| abstract |
The present invention relates to a method for separating C 2+ -rich fractions from liquefied natural gas (LNG).n n n a) partially evaporating (E1, E2) the liquefied natural gas (1, 1 '),n n n b) separating the partially evaporated natural gas (2) into a first C 1 -rich gas fraction (4) and a first C 2+ -rich liquid fraction (3),n n n c) rectifyingly separating the first C 2+ -rich liquid fraction (3) into a second C 1 -rich gas fraction (8) and a second C 2+ -rich liquid fraction (10) ( T) step,n n n d) liquefying (E1) the first C 1 -rich gas fraction 4 again, andn n n e) providing at least one partial stream 6 of said again liquefied C 1 -rich gas fraction 5 to a rectifying separation device T as a reverse flow. |