F - Mech Eng,Light,Heat,Weapons – 25 – J
Patent
F - Mech Eng,Light,Heat,Weapons
25
J
F25J 3/00 (2006.01)
Patent
CA 2592012
The invention concerns a method comprising cooling the initial natural gas (13) and introducing same into a C2+ hydrocarbon recovery column (35). It comprises recovering the overhead stream (131) of the column (35) to form the treated natural gas (15), and recovering the bottoms stream (171) of the column (35) to introduce same at a supply level (P1) of the fractionating column (61) provided with an overhead condenser (63). The column (61) produces in the bottoms said C3+ hydrocarbon cut (17). The method comprises recovering the ethane-rich stream (19) from the intermediate level (P2) of the column (61), located above said supply level (P1) and the production of a secondary reflux stream (191) from said overhead condenser (63) introduced in reflux into the recovery column (35).
Ce procédé comprend le refroidissement du gaz naturel de départ (13) et son introduction dans une colonne (35) de récupération des hydrocarbures en C2 +. Il comprend la récupération du courant de tête (131) de la colonne (35) pour former le gaz naturel traité (15), et la récupération du courant de pied (171) de la colonne (35) pour son introduction à un niveau d'alimentation (P1) d'une colonne de fractionnement (61) munie d'un condenseur de tête (63). La colonne (61) produit en pied ladite coupe d'hydrocarbures en C3 + (17). Le procédé comprend la récupération du courant riche en éthane (19) à partir d'un niveau intermédiaire (P2) de la colonne (61), situé au-dessus dudit niveau d'alimentation (P1) et la production d'un courant de reflux secondaire (191) à partir dudit condenseur de tête (63) introduit en reflux en tête de la colonne de récupération (35).
Ridout & Maybee Llp
Technip France
LandOfFree
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