Ethylene plant refrigeration system

Details Ethylene plant refrigeration system Ethylene plant refrigeration system

C - Chemistry, Metallurgy

07

C

C07C 11/04 (2006.01) C07C 7/04 (2006.01) C07C 7/09 (2006.01) C10G 70/04 (2006.01) F25J 3/02 (2006.01)

Patent

CA 2317534

A refrigeration system for an ethylene plant uses a low pressure demethanizer (12) and a binary refrigerant (20) comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout the system or separators (88, 108, 120, 128) may be used to divide the refrigerant into a methane-rich binary refrigerant (140) and an ethylene- or ethane-rich binary refrigerant (142).

L'invention concerne un système de refroidissement pour une installation de production d'éthylène. Ce système comprend un déméthaniseur (12) basse pression et un fluide (20) de refroidissement biphasé comprenant un mélange de méthane et d'éthylène ou de méthane et d'éthane. La composition de refroidissement peut être constante dans tout le système, ou des séparateurs (88, 108, 120, 128) peuvent être utilisés pour séparer le fluide de refroidissement en un fluide (140) de refroidissement biphasé riche en méthane et un fluide (142) de refroidissement biphasé riche en éthane.

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