Preparation method of integrated multi-root ceramic hollow fiber molecular sieve membrane

An integrated, molecular sieve technology, applied in chemical instruments and methods, membranes, membrane technology, etc., can solve problems such as difficult sealing and poor strength, and achieve the effects of broadening application fields, increasing membrane production, and improving synthesis efficiency

Active Publication Date: 2018-05-25
江苏旭一高科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method not only realizes the batch preparation of molecular membranes, but also designs an integrated multi-root hollow fiber membrane module, which realizes the modular assembly in the application process of hollow fiber molecular sieve membranes, and successfully solves the difficulty of sealing and the strength of hollow fiber molecular sieve membranes in the process of use. Inferior bottleneck problem

Method used

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  • Preparation method of integrated multi-root ceramic hollow fiber molecular sieve membrane
  • Preparation method of integrated multi-root ceramic hollow fiber molecular sieve membrane
  • Preparation method of integrated multi-root ceramic hollow fiber molecular sieve membrane

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preparation example Construction

[0034] The invention provides an integrated method for preparing multiple ceramic hollow fiber molecular sieve membranes, wherein the ceramic hollow fiber molecular sieve membrane is composed of a ceramic hollow fiber carrier and a molecular sieve membrane layer on the outer surface thereof. The specific steps of the method are as follows:

[0035] Such as figure 1 As shown, firstly, a multi-channel base 2 needs to be prepared, and holes are distributed on the multi-channel base 2, and the material of the multi-channel base can be polytetrafluoroethylene, ceramics or metal. Inserting one end of the hollow fiber carrier 1 can play the role of fixing and sealing the hollow fiber carrier 1. The diameter of the hole is preferably slightly larger than the outer diameter of the hollow fiber carrier. On the one hand, the carrier can be better fixed, and on the other hand On the one hand, it is convenient to prevent the sealing material from flowing into the gap during the subsequent...

Embodiment 1

[0046] The preparation method of an integrated hollow fiber NaA molecular sieve membrane, the specific steps are as follows:

[0047] (a) Insert one end of the hollow fiber carrier into a circular porous base with 69 channels. The contact part between the base and the hollow fiber carrier is sealed with ceramic sealant, and the other end is inserted into the same base. After sealing and sintering, an integrated Multiple hollow fiber carrier assemblies.

[0048] (b) Using special crystal coating equipment, the integrated multi-hollow fiber carrier assembly is immersed in the pre-prepared NaA seed crystal solution by dipping and pulling, and the seed crystal concentration is 1%. Dipping time 5 seconds. After drying, a carrier assembly with a uniform seed layer is obtained covering the surface of the seed layer carrier such as Figure 5 shown.

[0049] (c) Referring to the synthesis ratio adopted in the patent CN101381087B, prepare the synthesis solution for preparing NaA mole...

Embodiment 2

[0051] The preparation method of an integrated hollow fiber NaA molecular sieve membrane, the specific steps are as follows:

[0052] (a) Insert one end of the hollow fiber carrier into a square porous base with 91 channels. The contact part between the base and the hollow fiber carrier is sealed with silicone, and the other end is inserted into the same base. After sealing and drying, an integrated Multiple hollow fiber carrier assemblies.

[0053] (b) Using special crystal coating equipment, through vacuum suction, immerse the integrated multi-root hollow fiber carrier assembly into the pre-prepared seed crystal solution with a seed concentration of 1% NaA, and adjust the pressure on both sides of the carrier through the vacuum system. The difference is 0.01MPa, and the suction time is 5 seconds. After drying, a carrier assembly with a uniform seed layer is produced.

[0054] (c) Referring to the synthesis ratio used in the patent CN101381087B, prepare the synthesis liquid...

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Abstract

The invention relates to a preparation method of an integrated multi-ceramic-hollow-fiber molecular sieve membrane.The ceramic hollow fiber molecular sieve membrane is composed of a ceramic hollow fiber carrier and a molecular sieve membrane layer.The preparation method concretely includes the steps that one end of the hollow fiber carrier is inserted into a multi-hole base, the part, making contact with the hollow fiber carrier, of the base is sealed through a sealing material, the other end of the hollow fiber carrier is inserted into the same base, and after sealing, an integrated multi-ceramic-hollow-fiber carrier assembly is formed; the assembly is coated with a crystal seed layer evenly, and the molecular sieve membrane is prepared on the seed crystal hollow fiber carrier assembly through a hydrothermal synthesis method.Large-scale synthesis of the hollow fiber molecular sieve membrane is achieved, the preparation efficiency of the hollow fiber molecular sieve membrane is improved and is applied to high-temperature environment in a sealed mode, and the industrial application progress of the hollow fiber molecular sieve membrane is promoted.

Description

technical field [0001] The invention relates to a method for preparing an integrated multi-root hollow fiber molecular sieve membrane, which belongs to the field of inorganic membranes. Background technique [0002] Molecular sieve membrane is a dense film formed by stacking molecular sieves on a porous carrier. Compared with other membrane materials, molecular sieve membrane has the following advantages: (1) Uniform pore size, which is close to the dynamic size of general molecules, and can achieve molecular level (2) It has good thermochemical stability; (3) In addition to its own catalytic activity, the cations in the molecular sieve are exchangeable and can be introduced into the catalytic active site through ion exchange. The dual characteristics of separation and catalysis of molecular sieve membranes make them have good application prospects in the fields of gas separation, membrane catalysis and membrane reactors. [0003] Currently commercialized molecular sieve me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/02B01D69/02B01D63/04B01D67/00
CPCB01D63/04B01D67/0051B01D69/02B01D71/028B01D2313/04B01D2325/24B01D2325/30
Inventor 顾学红洪周蔡超
Owner 江苏旭一高科技有限公司
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