Cryogenic separation of gaseous mixtures

Details Cryogenic separation of gaseous mixtures Cryogenic separation of gaseous mixtures

F - Mech Eng,Light,Heat,Weapons

25

J

162/116

F25J 3/02 (2006.01)

Patent

CA 2029869

In a cyrogenic technique far recovering ethane from a gaseous mixture containing methane, ethane, and ethane, the gaseous mixture is passed through a chilling train having a series of dephlegmator-type exchange units to condense liquid rich in ethane and ethane, while separating a major portion of methane and lighter gas. A multizone demethanizer removes condensed methane from the C2 fraction to provide a pure product economically.

Selon une technique cryogénique de récupération d'éthène à partir d'un mélange gazeux contenant du méthane, de l'éthane et de l'éthène, ou fait passer le mélange gazeux dans un train de refroidissement brusque comportant une série d'unités d'échange du type déflegmateur afin de condenser du liquide riche en éthène et en éthane, tout en séparant une majeure partie de méthane et de gaz plus léger. Un déméthaniseur multizone élimine le méthane condensé de la fraction de C2 afin de produire de manière économique un produit pur.

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