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A roll-type membrane element and its preparation method and application

A roll-type membrane and component technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve problems such as failure to achieve, low efficiency, small filtration area, etc., to improve efficiency and improve filtration efficiency , the effect of large filter area

Active Publication Date: 2022-04-19
湖南叶之能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the membrane material modified by surface hydrophilicity can alleviate the speed and degree of pollutant deposition to a certain extent, it still fails to achieve the desired effect.
Furthermore, at present, most of the filters used for filtering beer and soft drinks use a folded filter element, which has the problems of small unit filtration area and low efficiency.

Method used

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  • A roll-type membrane element and its preparation method and application
  • A roll-type membrane element and its preparation method and application
  • A roll-type membrane element and its preparation method and application

Examples

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preparation example Construction

[0144] The method for preparing the combined membrane unit 100 in the embodiment of the present invention includes the following steps:

[0145] Taking the feeding partition 1001 as the center, stack the double-sided non-woven fabric 1002, the hydrophilic modified polymer microporous membrane 1003 and the flow guide cloth 1004 in sequence; then coat the surface of the flow guide cloth 1004 with two-component polyurethane glue to seal Form glue seal line 1006, that is.

[0146] The distance between the glue sealing line 1006 and the edge of the diversion cloth 1004 is 1 cm to 3 cm.

[0147] The preparation method of the rolled membrane element in the embodiment of the present invention, such as figure 2 shown, including the following steps:

[0148] Several combined membrane units 100 are rolled around the central tube 200, that is, as image 3 or Figure 4 Spiral membrane element shown.

[0149] The central tube 200 is also provided with a number of central tube holes 20...

Embodiment 1

[0164] This embodiment is a method for preparing a rolled membrane element, comprising the following steps:

[0165] S1. Select double-sided non-woven fabric 1002 and use plasma for surface pretreatment. The treatment frequency is 13.6 MHz, room temperature, and irradiation time is 900s; the average pore diameter of the first porous surface of the treated non-woven fabric is 3.2 μm, and the second The average pore diameter of the porous surface is 0.58μm, the average thickness is 62μm, and the blanking size: the length is 1750mm, and the width is 1067mm;

[0166]S2. Select a polytetrafluoroethylene microporous membrane with an average pore size of 0.03 μm (Shenzhen Shengan Technology Co., Ltd., e-PTFE-204) for hydrophilic modification. The specific conditions are as follows: the monomer (N, N, N- Trimethyl-3-[(2-methyl-1-oxo-2-propenyl)amino]-1-propylammonium chloride (CAS No.: 68039-13-4) and diamine maleate (CAS No.: 928-01-8)) was dissolved in an aqueous solution of aceton...

Embodiment 2

[0180] This embodiment is a method for preparing a rolled membrane element, comprising the following steps:

[0181] S1. Select double-sided non-woven fabric 1002 and use plasma for surface pretreatment. The treatment frequency is 13.6 MHz, room temperature, and irradiation time is 900s; the average pore diameter of the first porous surface of the treated non-woven fabric is 3.2 μm, and the second The average pore diameter of the porous surface is 0.58 μm, the average thickness is 62 μm, the length of the blank is 1750 mm, and the width is 1067 mm.

[0182] S2. Use a polypropylene microporous membrane with an average pore size of 0.021 μm (Shenzhen Xingyuan Material Technology Co., Ltd., SD220202) for hydrophilic modification. The specific conditions are as follows: monomer (sodium methacrylate (CAS No. : 1561-92-8) with N,N,N-trimethyl-3-[(2-methyl-1-oxo-2-propenyl)amino]-1-propylammonium chloride) at room temperature Dissolved in 70% acetone aqueous solution to obtain a mon...

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Abstract

The invention discloses a rolled membrane element and its preparation method and application. The element comprises: a central tube, a combined membrane unit, the combined membrane unit has a folded structure and a folded end, and the folded end is connected to the central tube Connected; the combined membrane unit, the combined membrane unit has a folded structure, the combined membrane unit includes a feed partition, and double-sided non-woven fabrics, hydrophilic modified A polymer microporous membrane and a flow guide cloth; the double-sided non-woven fabric has a first porous surface and a second porous surface, and the pore diameter of the first porous surface is larger than the pore diameter of the second porous surface; The first porous surface is disposed facing the feed screen. In the present invention, the high-efficiency filtration of liquid materials is realized through the synergistic effect of the double-sided non-woven fabric and the hydrophilic modified polymer microporous membrane.

Description

technical field [0001] The invention relates to the field of membrane technology, in particular to a rolled membrane element and its preparation method and application. Background technique [0002] Polymer membrane materials are the core elements of material separation, and play an increasingly important role in water purification, metal resource extraction, beer filtration, dairy production, and biopharmaceuticals. Membrane materials can be divided into reverse osmosis membranes, nanofiltration membranes, ultrafiltration membranes and microfiltration membranes according to the screening accuracy. The separation scale extends from sub-nanometer to micron. feature. Microfiltration membrane, as a kind of membrane material for separation application at the micron scale, can effectively separate suspended particles and bacteria in the solution, and has been widely used in the fields of food, beverage and pharmaceuticals. [0003] In the related art, the polymer microfiltratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/68B01D71/36B01D71/34B01D71/26B01D67/00B01D63/00
CPCB01D63/00B01D71/26B01D71/36B01D71/68B01D71/34B01D67/0006
Inventor 谭叶梅
Owner 湖南叶之能科技有限公司
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