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Addressing challenges in sealing of scalable multifiber module for O2 enrichment using LSCF membranes |
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| Authors: | Shunottara M. Jogdand Prachiti R. Bedadur Arun Torris Ravi Agrawal Ulhas K. Kharul R. Nandini Devi |
| Affiliation: | 1. Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Pune, India Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India;2. Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Pune, India;3. Shell India Markets Pvt. Ltd., Bangalore, India;4. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Pune, India;5. Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Pune, India |
| Abstract: | Scalable and multifiber modules in oxygen separation face huge challenges due to difficulty in integrating all the necessary components, especially in sealing the fibers in a gas tight module. Here, we report our findings on design and fabrication of a multifiber La0.6Sr0.4Co0.2Fe0.8O3–δ (LSCF)-based module, which can be scaled up. The focus is on sealing ceramic-metal interfaces by layering of sealants of varying thermal properties. We have also incorporated the use of dead ended fibers to minimize ceramic-metal interfaces in the hot zones and present a new method for dead ending by flame melting. Pressurizing the air inlet feed from either bore side or shell side is detrimental to the structural integrity of the fibers. A thorough characterization of the fresh and spent fibers is also carried out using X-ray tomography and electron microscopy, which indicates effect of temperature and pressure on the fibers. |
| Keywords: | characterization permeability perovskites |