FEEDSTOCK SOLUTION FLOW CONCENTRATION SYSTEM

Title:

FEEDSTOCK SOLUTION FLOW CONCENTRATION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2020/050282

Kind Code:

A1

Abstract:

A feedstock solution flow concentration system, which has a first step for causing counterflow or parallel flow of a feedstock solution flow a, which contains a solute and a solvent b, and a draw solution flow d via a forward osmosis membrane o and transferring the solvent b in the feedstock solution flow a to the draw solution flow d to obtain a concentrated feedstock solution flow c, which is the feedstock solution flow that has been concentrated, and a diluted draw solution flow e, which is the draw solution flow that has been diluted, wherein: the draw solution flow d contains an inducing substance Xm, a common solute Xn, and a solvent b; the solvents b in the feedstock solution flow a and the draw solution flow d both contain water; the common solute Xn is a solute that the feedstock solution flow a and the draw solution flow d have in common and is the same solute as at least one kind of solute contained in the feedstock solution flow a; and the concentration of the common solute Xn in the draw solution flow d is 1% to less than 100% of the concentration of the common solute Xn in the feedstock solution flow a.

Inventors:

HOTTA DAISUKE (JP)
FUJITA MITSURU (JP)
MIKAWA MASATO (JP)

Application Number:

PCT/JP2019/034656

Publication Date:

March 12, 2020

Filing Date:

September 03, 2019

Export Citation:

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Assignee:

ASAHI CHEMICAL IND (JP)

International Classes:

B01D61/00; A23L5/00; B01D61/36; B01D63/02; B01D69/08; B01D69/10; B01D69/12

Domestic Patent References:

WO2016210337A2	2016-12-29
WO2016021337A1	2016-02-11

Foreign References:

JP2016150308A	2016-08-22
JP2012091166A	2012-05-17
JPS54119096A	1979-09-14
JP2016150308A	2016-08-22

Other References: