The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Dec. 22, 2020

Filed:

Sep. 16, 2019
Applicant:

Mitsubishi Chemical Corporation, Chiyoda-ku, JP;

Inventors:

Hideto Hidaka, Chiyoda-ku, JP;

Yohei Sato, Chiyoda-ku, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 61/36 (2006.01); B01D 69/10 (2006.01); B01D 7/02 (2006.01); C02F 1/44 (2006.01); C07C 29/78 (2006.01); C02F 101/34 (2006.01); B01D 71/02 (2006.01);
U.S. Cl.
CPC ...
B01D 61/366 (2013.01); B01D 61/362 (2013.01); B01D 61/368 (2013.01); B01D 69/10 (2013.01); B01D 71/028 (2013.01); C02F 1/448 (2013.01); C07C 29/78 (2013.01); B01D 2311/06 (2013.01); B01D 2317/025 (2013.01); C02F 2101/34 (2013.01);
Abstract

The invention provides a water-alcohol separation system and a method for water-alcohol separation for producing a high purity alcohol while achieving energy saving as the whole process. Namely, a water-alcohol separation system including plural separation membrane modules connected in series, a vacuum apparatus for reducing a pressure at a permeated side of each of the separation membrane modules, and a condenser for condensing a vapor that has passed through a membrane, in which plural independent vacuum systems reduce the pressure at the permeated side of the membrane of the separation membrane modules.


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