A method for preparing a tubular ceramic membrane with one end sealed

By filling the solid ceramic membrane repellent of the same material in the tubular ceramic membrane precursor of the ceramic oxygen permeable film, and extruding it into one, high-temperature sintering is performed, the sealing problem of ceramic oxygen permeable film under high temperature conditions is solved, and an efficient and economical ceramic membrane sealing effect is achieved.

CN115105970BActive Publication Date: 2025-03-25QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
10 Cites 0 Cited by

Patent Information

Application Number
CN202110291242.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-03-18
Publication Date
2025-03-25
Estimated Expiration
2041-03-18

AI Technical Summary

Technical Problem

When sealing ceramic oxygen permeable films under high temperature conditions, there is a problem that the sealing material and the film material are prone to react with each other and thermal expansion mismatch, resulting in film rupture and leakage, and the use of precious metal sealing will increase cost and complexity.

Method used

A method of preparing a tubular ceramic membrane with one end seal is adopted. By filling the open end of the tubular ceramic membrane precursor with the same or similar solid ceramic membrane repellent to the opening end of the tubular ceramic membrane precursor, and extruding it into one by a mold, and then sintered at a high temperature under the gradient heating to form a dense one-end sealed tubular ceramic membrane.

Benefits of technology

It effectively solves the sealing problem of ceramic oxygen-permeable film under high temperature conditions, avoids the problem of mismatch between the mutual reaction and thermal expansion of the sealing material and the film material, improves the efficiency of the film use and sealing performance, and is simple in process and low in cost.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present invention belongs to the field of gas separation, and relates to a method for preparing a tubular ceramic membrane, and specifically to a method for preparing a ceramic membrane with one end sealed. An open end of a ceramic tubular membrane precursor tube and a section of a ceramic solid rod precursor are sealed by extrusion, and then sintered at high temperature to become dense, to obtain a tubular ceramic membrane with one end sealed, thereby achieving the sealing of the ceramic membrane in a high temperature area. The method of the present invention has a simple process and good sealing performance, and fundamentally solves the problems of easy mutual reaction between sealing materials and membrane materials and thermal expansion mismatch, which may cause undesirable characteristic changes or leakage of the gas separation membrane; at the same time, it solves the technical difficulties such as the complex sealing process caused by the large size of the tubular membrane, and while maintaining a stable sealing effect, it has a simple structure and is easy to operate.
Need to check novelty before this filing date? Find Prior Art