Process for recovering methanol

Details Process for recovering methanol Process for recovering methanol

2007-01-02

2007-01-02

Price, Elvis O. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S913000, C203S038000, C203S078000, C203S080000

Reexamination Certificate

active

11312237

ABSTRACT:
A process for recovering methanol from mixtures containing methanol and water, comprising multistage evaporation with heat integration, wherein the pressure is reduced from each stage to the next, and a downstream series of distillation stages with heat integration, wherein the pressure is increased from each stage to the next. The process reduces the amount of energy required for methanol recovery.

REFERENCES:
patent: 4659866 (1987-04-01), Bott et al.
patent: 2003/0040637 (2003-02-01), Hofen et al.
patent: 2003/0144535 (2003-07-01), Teles et al.
patent: 1 293 505 (2003-03-01), None
patent: 1 424 332 (2004-06-01), None
patent: 2 159 664 (2000-11-01), None
patent: WO 02/02544 (2002-01-01), None

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