F - Mech Eng,Light,Heat,Weapons – 25 – J
Patent
F - Mech Eng,Light,Heat,Weapons
25
J
F25J 3/00 (2006.01)
Patent
CA 2583435
A process for recovering liquefied C3 compounds from a natural gas stream containing C3 compounds which comprises (a) chilling the natural gas stream under conditions sufficient to liquefy the natural gas, whereby a mixture comprising liquid natural gas (LNG) and liquid C3 compounds is formed; (b) fractionating the mixture comprising liquid natural gas (LNG) and liquid C3 compounds in a separation zone under sub-atmospheric pressure and under conditions predetermined to vaporize a significant portion of the natural gas present while retaining the C3 compounds as a liquid fraction; and (c) recovering separately from the separation zone natural gas and liquid C3 compounds.
L'invention concerne un procédé de récupération de composés C3 liquéfiés à partir d'un flux gazeux naturel contenant des composés C3. Ledit procédé consiste (a) à refroidir le flux de gaz naturel dans des conditions suffisantes pour liquéfier le gaz naturel, ce qui permet de former un mélange renfermant un gaz naturel liquide et des composés C3 liquides, (b) fractionner le mélange contenant le gaz naturel liquide et les composés C3 liquides dans une zone de séparation à une pression sub-atmosphérique et dans des conditions prédéterminées de façon à vaporiser une partie importante du gaz naturel présent, tandis que sont retenus les composés C3 sous forme de fraction liquide, (c) récupérer séparément le gaz naturel de la zone de séparation et les composés C3 liquides.
Chevron U.s.a. Inc.
Sim & Mcburney
LandOfFree
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