F - Mech Eng,Light,Heat,Weapons – 25 – J
Patent
F - Mech Eng,Light,Heat,Weapons
25
J
F25J 3/00 (2006.01) F25J 1/02 (2006.01) F25J 3/02 (2006.01)
Patent
CA 2346774
A process is disclosed to remove a high-volatility component, such as nitrogen, from a feed stream rich in methane to produce a product substantially free of the high-volatility component. The feed stream is expanded (53) and fed to a phase separator (55) which produces a vapor stream (22) and a liquid stream (19). The vapor stream is enriched in the volatile component. The liquid stream, which is lean in the volatile component and rich in methane, is pumped (56) to a higher pressure and heated to produce a pressurized liquefied product stream having a pressure sufficient for the product stream to be at or below its bubble point and having a temperature above about -112 ~C (-170 ~F).
L'invention porte sur un procédé visant à retirer un composant très volatil tel que l'azote d'un flux d'alimentation riche en méthane de façon à obtenir un produit pratiquement exempt de ce composant très volatil. Le flux d'alimentation est dilaté et acheminé vers un séparateur de phase qui génère un flux de vapeur et un flux de liquide. Le flux de vapeur est enrichi en composant volatil. Le flux de liquide, pauvre en composant volatil et riche en méthane, est aspiré à une pression plus élevée et chauffé de façon à produire un flux de produit liquéfié sous pression qui a une pression suffisante, égale ou inférieure à son point de bulle, et une température supérieure à environ -112 ·C (-170 ·F).
Cole Eric T.
Stone Brandon T.
Borden Ladner Gervais Llp
Exxonmobil Upstream Research Company
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