Recovery and purification of ethylene

Details Recovery and purification of ethylene Recovery and purification of ethylene

2004-12-20

2008-10-21

Caldarola, Glenn (Department: 1797)

Refrigeration

Olefin

C062S620000, C062S622000, C062S623000, C062S627000, C062S932000, C208S350000, C208S351000, C208S353000, C208S355000, C585S809000

Reexamination Certificate

active

07437891

ABSTRACT:
A process for the recovery and purification of ethylene and optionally propylene from a stream containing lighter and heavier components that employs an ethylene distributor column and a partially thermally coupled distributed distillation system.

REFERENCES:
patent: 5675054 (1997-10-01), Manley
patent: 5746066 (1998-05-01), Manley
patent: 6212905 (2001-04-01), Kuechler et al.
patent: 2004/0182751 (2004-09-01), Reyneke et al.
patent: 2005/0154245 (2005-07-01), Reyneke et al.
Heinz Zimmerman & Roland Walzl, “Ethylene” in: Ullman's Encyclopedia of Industrial Chemistry (2007 ed.), vol. A10, pp. 1, 2, 5-9, and 33-41.

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