期刊
MEMBRANES
卷 10, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/membranes10120442
关键词
oxygen transport membrane; LSCF; perovskite; glass melting; oxy-fuel combustion
类别
资金
- RSE S.p.A.
- Ministry of Economic Development-Management for nuclear, renewable energies and energy efficiency-in compliance
- FP7 European Project GREEN-CC [608524]
Glass manufacturing is an energy-intensive process in which oxy-fuel combustion can offer advantages over the traditional air-blown approach. Examples include the reduction of NOx and particulate emissions, improved furnace operations and enhanced heat transfer. This paper presents a one-dimensional mathematical model solving mass, momentum and energy balances for a planar oxygen transport membrane module. The main modelling parameters describing the surface oxygen kinetics and the microstructure morphology of the support are calibrated on experimental data obtained for a 30 mu m thick dense La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCF) membrane layer, supported on a 0.7 mm porous LSCF structure. The model is then used to design and evaluate the performance of an oxygen transport membrane module integrated in a glass melting furnace. Three different oxy-fuel glass furnaces based on oxygen transport membrane and vacuum swing adsorption systems are compared to a reference air-blown unit. The analysis shows that the most efficient membrane-based oxyfuel furnace cuts the energy demand by similar to 22% as compared to the benchmark air-blown case. A preliminary economic assessment shows that membranes can reduce the overall glass production costs compared to oxyfuel plants based on vacuum swing adsorption technology.
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