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Casting method of ceramic membrane element

A casting method and ceramic membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve problems such as complicated procedures, low end-capping efficiency, and long operating time, and achieve improved filtration channels and improved production Efficiency, fast curing time effect

Active Publication Date: 2021-11-19
SANDA FILM SCI & TECH XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technical solution has the following problems: the sealing efficiency is low, and the operation time is long
After the casting is completed, the shell surface needs to be cut mechanically. Due to the high hardness of the ceramic membrane element, cutting is difficult and the process is complicated.
Mechanical cutting treatment not only wastes the effective area of ​​ceramic membrane elements and casting materials, but also produces solid waste of colloid and ceramic membrane, which is difficult to deal with, high in cost, and pollutes the environment
In addition, after the casting is completed, the ceramic membrane element and the colloid are rigidly connected, and strong mechanical vibration will be generated during mechanical cutting, which will cause the bonding force between the ceramic membrane element and the colloid to weaken, thereby increasing the ceramic membrane element from the colloid. risks of

Method used

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  • Casting method of ceramic membrane element
  • Casting method of ceramic membrane element
  • Casting method of ceramic membrane element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0041] (1) Insert the end of the ceramic membrane membrane element (alumina ceramic membrane module from a certain ceramic membrane manufacturer) into the liquid hot melt adhesive at a temperature of 100-250°C for 0.1h, and then seal the above end Take it out to contact the air at normal temperature, cool down naturally for 0.2h until the hot melt adhesive solidifies, and obtain the sealed ceramic membrane element; the hot melt adhesive is a hot melt adhesive with a melt viscosity of 5500cps at 170°C;

[0042] (2) using epoxy resin as a bonding agent to centrifugally cast the end of the above-mentioned ceramic membrane element and the outer structure together;

[0043] (3) After the above-mentioned binder is solidified, heat the above-mentioned hot-melt adhesive until it is in a liquid state, so that the hot-melt adhesive flows away after being liquefied, and the casting is completed.

[0044]

[0045]

Embodiment 4-8

[0047] (1) Insert the end of the ceramic membrane membrane element (alumina ceramic membrane module from a certain ceramic membrane manufacturer) into liquid hot melt adhesive at a temperature of 170°C for 0.1h, and then take out the above end to Contact the air at normal temperature, cool down naturally for 0.2h until the hot melt adhesive solidifies, and obtain the sealed ceramic membrane element; the hot melt adhesive is a hot melt adhesive with a melt viscosity of 500-25000cps at 170°C;

[0048] (2) using epoxy resin as a bonding agent to centrifugally cast the end of the above-mentioned ceramic membrane element and the outer structure together;

[0049] (3) After the above-mentioned binder is solidified, heat the above-mentioned hot-melt adhesive until it is in a liquid state, so that the hot-melt adhesive flows away after being liquefied, and the casting is completed.

[0050]

Embodiment 9-11

[0052](1) Insert the end of the ceramic membrane membrane element (alumina ceramic membrane module from a ceramic membrane manufacturer) into the liquid hot melt adhesive at a temperature of 170°C for 0.001-0.5h, and then seal the above end Take it out to contact the air at normal temperature, cool down naturally for 0.2h until the hot melt adhesive solidifies, and obtain the sealed ceramic membrane element; the hot melt adhesive is a hot melt adhesive with a melt viscosity of 5500cps at 170°C;

[0053] (2) using epoxy resin as a bonding agent to centrifugally cast the end of the above-mentioned ceramic membrane element and the outer structure together;

[0054] (3) After the above-mentioned binder is solidified, heat the above-mentioned hot-melt adhesive until it is in a liquid state, so that the hot-melt adhesive flows away after being liquefied, and the casting is completed.

[0055]

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Abstract

The invention discloses a casting method of a ceramic membrane element, which comprises the following steps: (1) inserting the end part of the ceramic membrane element into a liquid hot melt adhesive for end sealing treatment, taking out the end part to be in contact with normal-temperature air, and naturally cooling until the hot melt adhesive is cured to obtain an end-sealed ceramic membrane element; (2) casting the end part of the ceramic membrane element and an outer structural member together by using a binder; and (3) after the adhesive is solidified, heating the hot melt adhesive until the hot melt adhesive is in a liquid state, so that the hot melt adhesive flows away after being liquefied, and casting is completed. The ceramic membrane element is subjected to end sealing treatment before casting through the hot melt adhesive of a specific specification, the hot melt adhesive resin is proper in viscosity and cannot permeate into a longitudinal channel of the ceramic membrane, the effective membrane element filtering channel can be improved, the hot melt adhesive curing time is short, and the production efficiency can be improved to a great extent.

Description

technical field [0001] The invention belongs to the technical field of membrane element processing, and in particular relates to a casting method of a ceramic membrane element. Background technique [0002] Compared with organic membranes, ceramic membranes have the advantages of strong permeability, high mechanical strength, acid and alkali resistance, and organic solvent resistance. Therefore, ceramic membranes occupy an important place in the field of clean production and water treatment. According to the different supports, the configuration of the ceramic membrane can be divided into four types: tube type, flat plate, disc type, and multi-channel. According to different operating modes, ceramic membrane modules can be divided into external and submerged. At present, external membrane modules can be divided into tubular tubular ceramic membranes, tubular flat ceramic membranes and tubular porous ceramic membranes. Usually, ceramic membranes The membrane element is integ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D63/00B01D63/06B01D63/08
CPCB01D63/00B01D63/061B01D63/081B01D63/06B01D63/08
Inventor 黄凤祥姚萌洪昱斌方富林蓝伟光
Owner SANDA FILM SCI & TECH XIAMEN