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Method and device for producing enhanced hollow fiber membrane

A production method and fiber membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve problems such as blockage, inner diameter of permeable membrane filaments, etc., to improve bonding force, bond strength, Solve the effect of not round appearance

Active Publication Date: 2014-08-13
BEIJING ORIGIN WATER FILM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, it is impossible to use low-viscosity casting solution, that is, casting solution with low solid content, for spinning when spinning the inner support membrane. Because the core solution cannot pass through the inside of the membrane filament when spinning the reinforced hollow fiber membrane supported by the inner support at present, so the membrane The filament can only gel from the outside to the inside. When the viscosity of the casting solution is low, it is easy to seepage or the inner diameter of the membrane filament is blocked.

Method used

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  • Method and device for producing enhanced hollow fiber membrane
  • Method and device for producing enhanced hollow fiber membrane

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Embodiment Construction

[0025] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Referring to the accompanying drawings, the present invention is a set of reinforced hollow fiber membrane production device adopting forming, which is mainly used in the production stage of reinforced hollow fiber membrane, including a wire feeder 1, a horizontal water tank 4, and a wire receiving machine arranged in sequence to transport fiber ropes. 9. There is a fiber roller 2 inside the wire feeder 1, and a wire receiving wheel 8 inside the wire feeder 9. There is also a billet coating device 3 between the wire feeder 1 and the horizontal water tank 4. The billet coating device 3 includes A container 3-5 containing the casting solution 3-4, the container 3-5 is provided with a wire feeding guide wheel 3-6, a wire pressi...

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Abstract

The invention discloses a method for producing an enhanced hollow fiber membrane, which comprises (a) braiding a fiber rope to serve as an inner support for the hollow fiber membrane; (b) dragging the fiber rope to pass through a membrane casting solution while allowing the fiber rope to fully immerse in the membrane casting solution; (c) allowing the fiber rope to pass through an eyelet after leaving the membrane casting solution, and arranging a spherical body, with diameter larger than the diameter of the eyelet, in the tubular section of the fiber rope, and allowing the spherical body to abut against the eyelet by use of collection tension; (d) allowing the fiber rope to pass through a water tank after leaving the eyelet and solidify in the liquid, and sending the fiber rope out when the membrane casting solution on the surface of the fiber rope loses flowability; and (e) collecting. The invention also provides a device for producing the enhanced hollow fiber membrane by adopting the method. The invention can solve the problem of clogging of membrane filament due to material seepage in case of material solution with low viscosity, to ensure uniform penetration of the material solution into the inner and outer walls and improve the bonding force between the membrane layer and the support layer, and can solve the problem of non-round appearance.

Description

technical field [0001] The invention belongs to the field of hollow fiber membranes. Specifically, the invention relates to a production method of a reinforced hollow fiber membrane with internal support and a supporting production device suitable for the method. Background technique [0002] At present, the problem of membrane treatment of sewage has been more and more applied in China. Membrane treatment of sewage has advantages that cannot be compared with traditional processes, such as fast treatment speed and high treatment precision. There are also various membranes for sewage treatment. The existing membranes are divided into flat membranes, roll membranes, hollow fiber membranes, etc. according to their shapes. The forming methods are divided into dry method, wet method, and thermal phase method. [0003] The present invention is a molding method for reinforced hollow fiber membranes, which is obtained on the basis of wet methods. Most of the existing wet membrane fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D69/08B01D67/00
Inventor 陈亦力彭兴峥李锁定代攀文剑平
Owner BEIJING ORIGIN WATER FILM TECH
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