Method and Installation for Separating a gas mixture containing Methane gas is obtained by distillation and Separation

摘要

Procedure and the installation of a gas mixture and Gas obtained by this facility. This refers to a procedure and an installation of cryogenic separation of the constituents of Natural Gas under pressure (14), a First separator whose constituent phases (B1) S of each of the phases are separated in a distillation column (C1).A portion of the gaseous fraction (5) exit from the top of the column (C1) is recycled in the last level of the column. The Procedure also includes the derivation of (9) a part of a first portion of the head (3) output of the first stage separator.The Procedure also includes the separation of a First fraction of Foot (4) output of the first separator, a Second separator (B2). Other ways of realization are also described.