MEMBRANE SEPARATION SYSTEM AND METHOD FOR OPERATING MEMBRANE SEPARATION SYSTEM

WIPO Patent Application WO/2024/058081

A1

The present invention provides a membrane separation system suitable for efficiently recovering an organic compound. A membrane separation system 100 comprises: a membrane separation part 10; a condensation part 20; and a pressure reduction part 30. The condensation part 20 is disposed between the membrane separation part 10 and the pressure reduction part 30. The membrane separation part 10 has an osmotic evaporating membrane, and a supply space and a permeation space which are separated by the osmotic evaporating membrane. The osmotic evaporating membrane separates a supply liquid S containing a volatile organic compound C and a gas G into a permeating fluid S1 and a non-permeating fluid S2. The condensation part 20 condenses the organic compound C contained in the permeating fluid S1. The pressure reduction part 30 reduces pressure in the permeation space of the membrane separation part 10. During operation, an operation condition for the pressure reduction part 30 is controlled such that pressure P10 in the permeation space of the membrane separation part 10 becomes greater than the minimum value of pressure that enable reaching into the permeation space of the membrane separation part 10 during a rated operation of the pressure reduction part 30.

KIMURA NAOMICHI (JP)
HIRAI TOMOYA (JP)
NAKANO TAKESHI (JP)

PCT/JP2023/032933

March 21, 2024

September 08, 2023

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NITTO DENKO CORP (JP)

B01D61/36

JPH02273636A	1990-11-08
JP2006042673A	2006-02-16
CN102787144A	2012-11-21

KAMADA Koichi et al. (JP)

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