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Apparatus and method for continuously preparing hollow fiber composite membrane

A fiber composite and hollow technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems that hollow fiber composite membranes cannot be produced continuously in industry

Inactive Publication Date: 2019-02-01
XINJIANG DELAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, there is a problem that the hollow fiber composite membrane cannot be produced continuously in the industry

Method used

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  • Apparatus and method for continuously preparing hollow fiber composite membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Soak the polysulfone hollow fiber membrane in the aqueous phase solution containing 1.0% piperazine and other additives for a period of time, and then enter the hot air device (at a temperature of 10°C and a wind speed of 10m / h) along with the conveying device to dry on-line for about 10s, and then The belt with a speed of 1m / h is conveyed into the pressure-resistant glass tube, and the flow speed of the organic solution is 1m / h; the trimesoyl chloride contained in the organic solution and piperazine undergo interfacial polymerization to form a polyamide coating. The hollow fiber composite membrane is sent to the post-processing device (the temperature of the hot air circulation drying device is 10°C and the wind speed is 10m / h) by the power guide roller for curing treatment; then, the hollow fiber composite membrane is rolled into a large roll by the winding device for standby. The obtained hollow fiber composite membrane is 1500ppm MgSO under 25 ℃, 0.6MPa pressure 4 d...

Embodiment 2

[0018] Soak the polyvinylidene fluoride hollow fiber membrane in an aqueous solution containing 1.0% piperazine and other additives for a period of time, and then enter the hot air device (at a temperature of 50°C and a wind speed of 500m / h) along with the conveying device for online drying for about 5s. It is conveyed into a pressure-resistant glass tube by a belt with a conveying speed of 50m / h, and the flow speed of the organic solution is 50m / h; the trimesoyl chloride contained in the organic solution undergoes interfacial polymerization with piperazine to form a polyamide coating. The hollow fiber composite membrane is sent to the post-processing device (the temperature of the hot air circulation drying device is 100°C and the wind speed is 1500m / h) by the power guide roller for curing treatment; then, the hollow fiber composite membrane is rolled into a large roll by the winding device for standby. The obtained hollow fiber composite membrane is 1500ppm MgSO under 25 ℃, 0...

Embodiment 3

[0020] Soak the polyethersulfone hollow fiber membrane in an aqueous solution containing 1.0% polyethyleneimine and other additives for a period of time, and then enter the hot air device (at a temperature of 100°C and at a wind speed of 1500m / h) with the conveying device for online drying for about 2s , is transported to the pressure-resistant glass tube by a belt with a transmission speed of 100m / h, and the flow speed of the organic solution is 100m / h; the trimesoyl chloride contained in the organic solution and polyethyleneimine undergo interfacial polymerization to form branched polyamide imide coating. The hollow fiber composite membrane is sent to the post-processing device (chemical treatment device) by the power guide roller for curing treatment; subsequently, the hollow fiber composite membrane is rolled into a large roll by the winding device for standby. The obtained hollow fiber composite membrane is 1500ppm MgSO under 25 ℃, 0.6MPa pressure 4 desalination experime...

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Abstract

The invention relates to an apparatus and a method for continuously preparing a hollow fiber composite membrane. The method comprises: placing a hollow fiber composite membrane in a dip coating devicefilled with a water phase monomer solution, carrying out infiltrating treatment for a certain time, and drying; transferring to a pressure-resistant glass pipe filled with a cross-linking agent organic phase solution, wherein the water phase monomer on the fiber membrane surface and the cross-linking agent are subjected to an interface polymerization functionalization reaction, such that a polyamide and polyimide functional layer is attached onto the surface of the fiber membrane; immobilizing the new coating by using a certain method; and finally winding the hollow fiber composite membrane into a bundle. According to the present invention, with the apparatus and the method, the problem that the hollow fiber composite membrane cannot be industrially continuously produced in the prior artis solved, the consumption of the organic solution is low, the energy consumption is low, the method is simple and easy to perform, the maneuverability is strong, the running cost is low, and the continuous production can be achieved.

Description

technical field [0001] The invention relates to the technical field of manufacturing hollow fiber composite membranes, in particular to a device and method for continuously preparing hollow fiber composite membranes. Background technique [0002] Composite membrane refers to the composite layer of ultra-thin and dense different materials with special separation function on the porous support base membrane. Compared with the integrated membrane, the functional layer of the composite membrane is thin and dense, so that the membrane has a high solute separation rate and water permeation rate at the same time; in addition, the physical and chemical structure of each layer of the composite membrane can be optimized to meet various requirements. Selective separation needs. The composite film forming process includes interfacial polymerization, in-situ polymerization, surface coating, plasma polymerization and other methods. [0003] Nanofiltration membranes and reverse osmosis m...

Claims

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Application Information

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IPC IPC(8): B01D71/56B01D71/64B01D69/12B01D69/08B01D67/00
CPCB01D67/0002B01D69/08B01D69/12B01D71/56B01D71/64
Inventor 曾凡付许白羽晁燕李敏婷刘博
Owner XINJIANG DELAND
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