Title:
COMPOSITE HOLLOW FIBER MEMBRANE MODULE AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2022/004738
Kind Code:
A1
Abstract:
This forward-osmosis composite hollow fiber membrane module has hollow fiber bundles, wherein: the hollow fibers are each such that a separation active layer of a high-molecular polymer thin film is provided on the inner surface of a microporous hollow fiber support film formed from a high-molecular polymer including polyketone; the film surface area of the hollow fiber bundles is 100 cm2 or greater; and the coefficient of variation of the average thickness of the separation active layer in the radial and thickness directions of the hollow fiber bundle is 0-60%, said coefficient being calculated through a method for measuring the mass of the separation active layer portion in a scanning electron microscope image in which a thickness-direction cross-section of the separation active layer is imaged.
Inventors:
TAKADA RYOICHI (JP)
KUBOTA NOBORU (JP)
SUZUMURA KEITARO (JP)
OSAKI TAKAHIRO (JP)
KUBOTA NOBORU (JP)
SUZUMURA KEITARO (JP)
OSAKI TAKAHIRO (JP)
Application Number:
PCT/JP2021/024610
Publication Date:
January 06, 2022
Filing Date:
June 29, 2021
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
B01D63/02; B01D69/12; B01D71/54; B01D71/56; B01D71/72
Domestic Patent References:
| WO2016024573A1 | 2016-02-18 | |||
| WO2016027869A1 | 2016-02-25 | |||
| WO2016024573A1 | 2016-02-18 | |||
| WO2016027869A1 | 2016-02-25 |
Foreign References:
| JP2015511175A | 2015-04-16 | |||
| JP2017213559A | 2017-12-07 | |||
| JP2017144390A | 2017-08-24 | |||
| JP2002348401A | 2002-12-04 | |||
| JPH024431A | 1990-01-09 |
Other References:
See also references of EP 4173699A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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