Abstract
The oxygen transport membrane (OTM) is a high-density ion-conducting ceramic membrane that selectively transfers oxygen ions and electrons through the pressure differential across its layers. It can operate at more than 800 °C and serves as an economical method for gas separation. However, it is difficult to predict the material properties of the OTM through experiments or analyses because its structure contains pores and depends on the characteristics of the ceramic composite. In addition, the transmittance of porous ceramic materials fluctuates strongly owing to their irregular structure and arbitrary shape, making it difficult to design such materials using conventional methods. This study analyzes the structural weakness of an OTM using CAE software (ANSYS Inc., Pittsburgh, PA, USA). To enhance the structural strength, a structurally optimized design of the OTM was proposed by identifying the relevant geometric parameters.
Highlights
Oxygen Transport MembraneAn oxygen transport membrane (OTM) is an ion-conducting membrane that selectively transports oxygen via the pressure difference between its two sides
When a ceramic membrane is exposed to high temperatures and pressures, it disintegrates
The material properties of these ceramics must be obtained and their characteristics channel were changed without increasing the thickness of each layer of the OTM module
Summary
An oxygen transport membrane (OTM) is an ion-conducting membrane that selectively transports oxygen via the pressure difference between its two sides. Ceramic membranes with mixed conductivity transport both ions and electrons. These membranes can separate oxygen without requiring external energy or applied voltages, as the electrons travels in or against the direction of the oxygen ions [9–16]. Pure OTMs operate at high temperatures and pressures; they necessitate mechanical, thermal, and structural stability. When a ceramic membrane is exposed to high temperatures and pressures, it disintegrates. To protect such membranes and maximize their efficiency, researchers have developed various types of laminated forms and module systems
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