Configuration and process for ngl recovery using a subcooled...

Details Configuration and process for ngl recovery using a subcooled... Configuration and process for ngl recovery using a subcooled...

F - Mech Eng,Light,Heat,Weapons

25

J

F25J 3/00 (2006.01) F25J 3/02 (2006.01)

Patent

CA 2484326

An NGL recovery plant includes a demethanizer (7) in which internally generated and subcooled lean oil absorbs CO2 and C2 from a gas stream (11), thereby preventing build-up and freezing problems associated with CO2, especially where the feed gas has a CO2 treatment at ethane recoveries above 90% and propane recoveries of at least 99%.

L'invention concerne une installation de récupération de liquides de gaz naturel (LGN), qui comprend un déméthaniseur (7) dans lequel de l'huile d'absorption générée et sous-refroidie en interne absorbe le CO¿2? et le C¿2? d'un flux gazeux (11), empêchant ainsi des problèmes de formation et de congélation liés au CO¿2?, notamment lorsque le gaz d'alimentation a un contenu de CO¿2? supérieur à 2 mole %. On obtient ainsi des installations opérant typiquement sans traitement CO¿2? amont à des taux de récupération d'éthane supérieurs à 90 % et à des taux de récupération de propane d'au moins 99 %.

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