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Device and method for producing hollow fiber membranes

A production device and fiber membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of uniformity, poor stability, uneven membrane wall thickness, and can not effectively solve the problem of uneven membrane wall thickness. , to achieve the effect of simple operation and high efficiency

Active Publication Date: 2012-11-07
XIAMEN LEEBAM MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly the following problems in the spinning process of hollow fiber membranes: 1) The thickness of the membrane wall is uneven; 2) The transverse strength of the membrane is not good; 3) The uniformity and stability are poor
The hollow fiber membrane spinning head device described above cannot effectively solve the shortcomings of the hollow fiber membrane such as uneven wall thickness and poor transverse strength in the spinning process.

Method used

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  • Device and method for producing hollow fiber membranes
  • Device and method for producing hollow fiber membranes
  • Device and method for producing hollow fiber membranes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The hollow fiber membrane production device of the present invention is used to produce PVDF hollow fiber membranes by immersion precipitation phase inversion method, and the production spinning traction speed is set to be 12 m / min. First, the spinneret does not rotate, which is equivalent to general spinning Take sample 1 after spinning production is stable for 10 minutes; then turn on the rotary switch of the rotary spinneret, set the rotating speed to 50 rpm, take sample 2 after spinning production is stable for 10 minutes; change back to the original ordinary spinning head , Take sample 3 after spinning production stabilizes for 10 minutes; After post-processing the 3 samples according to the usual production method, the detection data and analysis are shown in the following table.

Embodiment 2

[0028] The hollow fiber membrane production device described in the present invention is used for the production of PVDF hollow fiber membrane by thermal phase separation method, and the production spinning drawing speed is set to be 15 / min. First, the spinneret does not rotate, which is equivalent to a general spinneret. , take sample 4 after the spinning production is stable for 10 minutes; then turn on the rotary switch of the rotary spinneret, set the rotating speed as 65 rpm, and take sample 5 after the spinning production is stable for 10 minutes; change back to the original common spinning head, Take sample 6 after the spinning production is stable for 10 minutes; after post-processing the 3 samples according to the usual production method, the test data and analysis are shown in Table 1.

[0029] The performance measurement method of the hollow fiber membrane of the present invention is: measure the wall thickness of the hollow fiber membrane with a JXB-C computer readi...

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Abstract

The invention discloses a device for producing hollow fiber membranes. The device comprises a support. A spinneret, a lower joint and an upper joint are arranged successively from bottom to top on the support. A membrane material liquid inlet is arranged on the upper joint, and a membrane core liquid inlet is arranged on the lower joint. The upper joint and the lower joint are sealed through seal rings, and a spinneret orifice is arranged on the spinneret. The device for producing hollow fiber membranes is characterized in that the spinneret is a rotary spinneret, and rotary bearings are arranged at connection positions of the rotary spinneret with the lower joint and the support. The device further comprises a power unit and a transmission unit. The power unit is arranged on the support and connected with the rotary spinneret through the transmission unit. The invention further comprises a method for producing hollow fiber membranes. The device for producing hollow fiber membranes can be used for producing hollow fiber membranes through an immersion precipitation phase process or a thermal induced phase separation process, the structure is simple, manual adjustment is not used, the quality and the stability of hollow fiber membranes are improved greatly.

Description

technical field [0001] The invention relates to the field of hollow fiber membrane production, in particular to a hollow fiber membrane production device and a hollow fiber membrane preparation method. Background technique [0002] Hollow fiber membranes are widely used in filtration or dialysis in various fields such as industrial and municipal sewage treatment, drinking water purification, reclaimed water reuse, food processing and biomedicine. At present, the following problems mainly exist in the spinning process of hollow fiber membranes: 1) uneven thickness of the membrane wall; 2) poor transverse strength of the membrane; 3) poor uniformity and stability. [0003] In "Modern Membrane Technology and Its Application Guide" (July 2005, Chemical Industry Press, edited by Wang Xuesong), "Chapter 4 Preparation Process of Various Configuration Membranes" in the "Second Membrane Production Process" 4.4.2 The spinning head device of the hollow fiber membrane is introduced in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/08B01D67/00C02F1/44
Inventor 王俊川
Owner XIAMEN LEEBAM MEMBRANE TECH
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