Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By plural serial diverse separations
Reexamination Certificate
2007-07-03
2007-07-03
Dang, Thuan Dinh (Department: 1764)
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
By plural serial diverse separations
C585S639000
Reexamination Certificate
active
10292730
ABSTRACT:
A method for processing an olefin-containing product stream that contains dimethyl ether as a by-product is described. Such a product stream arises, for example, in the synthesis of olefin from methanol. For separation of the dimethyl ether from the product stream, it is proposed that at least a partial stream chiefly containing C3hydrocarbons is separated from the product stream by fractionation, and is sent to a rectification column (C3splitter) (16) for separation of propylene and propane. The dimethyl ether goes together with the propane into the bottom of the rectification column in the rectification process and can be withdrawn (42). A substantially pure propylene product (41), which contains at most only traces of dimethyl ether, can be removed from the top of the rectification column.
REFERENCES:
patent: 2456584 (1948-12-01), Everett et al.
patent: 4474647 (1984-10-01), Asselineau et al.
patent: 4499327 (1985-02-01), Kaiser
patent: 5090977 (1992-02-01), Strack et al.
patent: 5609734 (1997-03-01), Streicher et al.
patent: 5714662 (1998-02-01), Vora et al.
patent: 5914433 (1999-06-01), Marker
patent: 5990369 (1999-11-01), Barger et al.
patent: 6049017 (2000-04-01), Vora et al.
patent: 6121504 (2000-09-01), Kuechler et al.
Borgmann Wilfried
Fritz Helmut
Kunkel Josef
Lauermann Gerhard
Muller Klaus
Dang Thuan Dinh
ExxonMobil Chemical Patents Inc.
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