Title:
SEPARATION MEMBRANE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/039846
Kind Code:
A1
Abstract:
A separation membrane element according to the present invention comprises a water collecting tube, a separation membrane, a supply-side channel member, and a permeation-side channel member. The supply-side channel member has a net shape in which a plurality of fibrous rows X formed from a fibrous substance A, and a plurality of fibrous rows Y formed from a fibrous substance B, three-dimensionally intersect each other to form intersection points. The fibrous substance A and/or the fibrous substance B has a large diameter section and a small diameter section along a longitudinal direction, and in a longitudinal cross-section along the longitudinal direction, the fibrous substance A and/or the fibrous substance B is constituted by threads for which a center section between intersection point parts of the fibrous rows X and the fibrous rows Y has a smaller diameter than the large diameter section. The area percentage of the supply-side channel is 45-65%, and when observed in the thickness direction from the plane of the supply-side channel member, fibers between an arbitrary intersection point and an adjacent intersection point are tapered fibers for which the diameter expands in a tapered shape from one intersection point towards the other intersection point.
Inventors:
TANIGUCHI SHU (JP)
TAKAGI KENTARO (JP)
KONDA TAKESHI (JP)
TAKAGI KENTARO (JP)
KONDA TAKESHI (JP)
Application Number:
PCT/JP2020/032195
Publication Date:
March 04, 2021
Filing Date:
August 26, 2020
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B01D63/00; B01D63/10; D04B1/00
Domestic Patent References:
| WO2018221103A1 | 2018-12-06 |
Foreign References:
| JP2007117949A | 2007-05-17 | |||
| JP2015205269A | 2015-11-19 | |||
| JP2015526282A | 2015-09-10 | |||
| JP2006507919A | 2006-03-09 | |||
| JP2015526282A | 2015-09-10 | |||
| JP2000000437A | 2000-01-07 | |||
| JPH10118468A | 1998-05-12 | |||
| JP2019157773A | 2019-09-19 | |||
| JP2019231577A | 2019-12-23 | |||
| JP2020094335A | 2020-06-18 |
Other References:
See also references of EP 4023325A4
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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