High pressure separation of dimethyl ether from an olefin...

Details High pressure separation of dimethyl ether from an olefin... High pressure separation of dimethyl ether from an olefin...

2006-06-13

2006-06-13

Nguyen, Tam M. (Department: 1764)

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By addition of extraneous agent, e.g., solvent, etc.

C585S836000, C585S638000, C585S639000, C585S640000, C585S809000, C585S864000

Reexamination Certificate

active

07060866

ABSTRACT:
Disclosed is a method of removing dimethyl ether from an ethylene and/or propylene containing stream. Dimethyl ether is removed at a high pressure, preferably in a distillation column. The high pressure separation has the benefit of providing a relatively low bottoms temperature separation, while allowing for recovery of a highly concentrated ethylene and/or propylene stream.

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Eng, Curtis N., et al, “Integration of the UOP/HYDRO MTO Process into Ethylene Plants,”10th Ethylene Producers'Conference,1998, pp. 54-85.

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