Preparation method of high performance permeation evaporation permeable membrane

A pervaporation and water-permeable membrane technology, applied in chemical instruments and methods, semi-permeable membrane separation, membrane technology, etc., can solve the problem of difficult to control the direction of molecular sieve crystal growth, the surface of molecular sieve membrane is not uniform and complete, and the growth mechanism of molecular sieve crystal is complex, etc. problems, to achieve the effect of excellent separation performance, increased operational flexibility, and low requirements
CN1597072AInactive Publication Date: 2005-03-23NANJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NANJING UNIV OF TECH
Publication Date
2005-03-23
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A high-performance water-permeable osmosis-evaporation membrane is prepared through preparing a NaA-type molecular sieve membrane on the porous tubular ceramic substrate by hydrothermal synthetic reaction. Its raw materials are Na2O, Al2O3, SiO2 and H2O. Said Na-A-type molecular sieve membrane has excellent separation performance.
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Description

technical field

[0001] The invention provides a method for preparing a high-performance pervaporation water-permeable membrane, which belongs to the field of inorganic material permeable membranes. Background technique

[0002] In many fields, it is necessary to separate and refine a variety of high-purity products, and it is hoped that the separation process will meet the requirements of low energy consumption, no pollution or low pollution to the environment.

[0003] Pervaporation technology is a new type of membrane separation technology, which is mainly used in the membrane process of purifying chemicals and has a special status in chemical production. It uses the difference in the molecular size of different components in the mixture and the affinity to the membrane, which leads to the different permeability of each component in the process of pervaporation and realizes the separation of components. Pervaporation separation technology is not limited by the relationshi...

Claims

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