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A kind of drying method of organic tubular membrane

A drying method and tubular membrane technology, applied in the direction of static material dryers, drying gas arrangement, chemical instruments and methods, etc., can solve the problems of organic or inorganic residues, inability to directly apply, increase production costs, etc., and meet the conditions Controllable, large flux attenuation, and the effect of improving production efficiency

Active Publication Date: 2021-11-09
安徽普朗膜技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned process has complicated process, long production cycle, and there are still organic or inorganic residues in the film, which need to be removed by additional treatment process before use, which cannot be directly applied, and also increases the production cost of the enterprise

Method used

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  • A kind of drying method of organic tubular membrane
  • A kind of drying method of organic tubular membrane
  • A kind of drying method of organic tubular membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present embodiment provides a drying method for an organic tubular membrane, comprising the following steps:

[0029] S1. Drain: transfer the PEK (polyaryletherketone) organic tubular membrane cured in the coagulation bath to pure water (removing residual solvent) at a temperature of 35°C for 3 days, then take out and drain the organic tubular membrane Moisture on the membrane surface to obtain a drained organic tubular membrane;

[0030] The organic tubular membrane can also be selected from one of polyvinylidene fluoride (PVDF), polyethersulfone (PES), polysulfone (PSF), and polyvinyl chloride (PVC) as required. The diameter of the film tube formed by the solidification of the organic tubular film is 6 mm.

[0031] S2. Segmented drying: Place the drained organic tubular membranes in a constant temperature and humidity box. When placed, each group of organic tubular membranes is placed in a single layer and dried in segments. The specific drying state is shown in ...

Embodiment 2

[0036] The present embodiment provides a drying method for an organic tubular membrane, comprising the following steps:

[0037] S1. Drain: transfer the PVDF (polyvinylidene fluoride) organic tubular membrane cured and formed in the coagulation bath to pure water at a temperature of 35°C (remove residual solvent) for 1 day, and then take out and drain the organic tubular membrane. Moisture on the membrane surface to obtain a drained organic tubular membrane;

[0038] The diameter of the film tube formed by curing the organic tubular film is 8 mm.

[0039] S2. Segmented drying: Place the drained organic tubular membranes in a constant temperature and humidity box. When placing, each group of organic tubular membranes is placed in a single layer for segmented drying. The specific drying state is shown in Table 2. shown.

[0040] S3, drying: the obtained organic tubular membrane is subjected to a dehumidification operation when the ambient temperature is 10° C. until the humidi...

Embodiment 3

[0044] The present embodiment provides a drying method for an organic tubular membrane, comprising the following steps:

[0045] S1. Drain: transfer the PES (polyethersulfone) organic tubular membrane cured in the coagulation bath to pure water (removing the residual solvent) at a temperature of 35°C for 2 days, then take out and drain the organic tubular membrane surface moisture to obtain a drained organic tubular membrane;

[0046] The diameter of the film tube formed by the curing of the organic tubular film is 10 mm.

[0047] S2. Segmented drying: Place the drained organic tubular membranes in a constant temperature and humidity box. When placing, each group of organic tubular membranes is placed in a single layer for segmental drying. The specific drying state is shown in Table 3. shown.

[0048] S3, drying: the obtained organic tubular membrane is subjected to a dehumidification operation when the ambient temperature is 10° C. until the humidity is less than 40% to ob...

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Abstract

The invention discloses a drying method for an organic tubular membrane, which comprises the following steps: S1, draining: transfer the organic tubular membrane solidified and formed in a coagulation bath to pure water for soaking, and then take out and drain the organic tubular membrane surface Moisture; S2, drying: place the drained organic tubular film in a constant temperature and humidity box, and dry it in a high temperature and high humidity environment; S3, primary dehumidification: keep the temperature constant, reduce the humidity by 5‑10% and dry ; S4, one-time cooling: keep the humidity constant, and reduce the drying temperature of the organic tubular film by 5-20°C in one-time cooling; S5, cycle S3, S4 at least twice; S6, drying: the organic tube film obtained in S5 The dehumidification operation is carried out on the membrane until the humidity is less than 40%. By using a constant temperature and humidity box to dry the organic tubular membrane in sections, the process is simplified, and there is no need for a post-treatment solution to pretreat the membrane before drying, which avoids the residue of components in the treatment solution in the membrane, reduces production costs, and improves production efficiency. Productivity.

Description

technical field [0001] The invention belongs to the technical field of organic separation membranes, and in particular relates to a drying method of an organic tubular membrane. Background technique [0002] Membrane technology is a low-energy, low-cost separation technology because of its low energy consumption. The membrane separation device is simple, easy to operate, easy to manufacture, and easy to combine with other separation technologies, so it has a wide range of applications in many fields. [0003] The membrane device is composed of many different membrane modules. The membrane module is the core of the membrane device. The membrane modules are in the form of roll membrane modules, flat membrane modules, hollow fiber membrane modules, and tubular membrane modules. The tubular membrane module has a simple structure, is not easy to block, and is easy to clean, and can handle high viscosity and high solid content liquids. The organic tubular membrane wet membrane is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D69/04B01D67/00F26B9/06F26B21/08F26B21/10
CPCB01D67/0095B01D69/04F26B9/06F26B21/08F26B21/10
Inventor 吴立军
Owner 安徽普朗膜技术有限公司