Hollow fiber membrane module and method for manufacturing hollow fiber membrane module
The hollow fiber membrane module addresses pressure loss issues by structuring through-holes into coaxial flow paths and forming them simultaneously with adhesive bundling, improving filtration efficiency and reducing power costs for viscous fluids.
JP7797903B2Active Publication Date: 2026-01-14TORAY INDUSTRIES INC
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Patent Information
- Application Number
- JP2022021918
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-02-16
- Publication Date
- 2026-01-14
- Estimated Expiration
- 2042-02-16
AI Technical Summary
Technical Problem
Existing hollow fiber membrane modules experience significant pressure loss during external pressure cross-flow filtration, particularly when treating highly viscous fluids, due to the design of through-holes in the adhesive bundling section, which also affects sealing and adhesion, leading to increased power costs.
Method used
The through-holes are structured into coaxial first and second flow paths with a narrowing diameter, and formed simultaneously with adhesive bundling, using a multi-stage forming jig to prevent membrane damage.
Benefits of technology
This design reduces pressure loss and maintains effective sealing without post-processing, enhancing filtration efficiency and reducing power consumption, especially for high-viscosity fluids.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide an open hole structure that reduces pressure loss generated in an open hole which is provided in a hollow fiber module adhesion converging part.SOLUTION: In a hollow fiber membrane module comprises: a hollow fiber membrane bundle 6 comprising a plurality of hollow fiber membranes; a cylindrical case for accommodating the hollow fiber membrane bundle; a first adhesion converging part 7a which adheres and converges one end of the hollow fiber membrane bundle and blocks the end of the hollow fiber membrane bundle, a plurality of open holes 10 which are provided in the first adhesion converging part and extend in an axial direction of the hollow fiber membrane bundle, and a second adhesion converging part that adheres and converges the other end of the hollow fiber membrane bundle. The open hole is configured from a first flow channel 11a from an inlet, in which a fluid to be treated is introduced, to a depth H, and a second flow channel 11b from a most downstream part of the first flow channel to an outlet of the open hole. The first flow channel is on the same axis as the second flow channel, and the first flow channel is reduced in a diameter thereof between the inlet, in which the fluid to be processed is introduced, and the second flow channel.SELECTED DRAWING: Figure 4
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