C - Chemistry – Metallurgy – 10 – L
Patent
C - Chemistry, Metallurgy
10
L
C10L 3/10 (2006.01) F25J 3/02 (2006.01)
Patent
CA 2527381
The method comprises the following steps:(a) introduction of the feed natural gas (101) into a first distillation column (31) which gives a pre-treated natural gas (111) as top product, said pre-treated natural gas (111) being practically free of hydrocarbons of C¿6?+, (b) the pre-treated natural gas (111) is introduced into a liquid natural gas recovery unit (19), comprising at least one second distillation column (49), to produce as top product a purified natural gas (151) and a liquid natural gas cut (15) and (c) the natural gas for liquefaction (161) is formed by the purified natural gas (151) from step (b).
Ce procédé comprend les étapes suivantes :(a) on introduit le gaz naturel de départ (101) dans une première colonne de distillation (31) qui produit en tête un gaz naturel pré-traité (111), lequel gaz naturel pré-traité (111) ne contient pratiquement plus d'hydrocarbures en C6+ ; (b) on introduit le gaz naturel pré-traité (111) dans une unité (19) de récupération des LGN comprenant au moins une deuxième colonne de distillation (49), de façon à produire, d'une part, en tête de colonne, un gaz naturel purifié (151), et d'autre part, une coupe de LGN (15) ; et (c) on forme ledit gaz naturel apte à être liquéfié (161) à partir du gaz naturel purifié (151) issu de l'étape (b) .
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
Technip France
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