Oxygen Transport Membranes for Efficient Glass Melting

Membranes

Luca Mastropasqua¹  Antonio Giuffrida²  Paolo Chiesa²  Francesca Drago³ 

[1] Advanced Power and Energy Program, University of California, Irvine, CA 92697, USA;Politecnico di Milano—Dipartimento di Energia, 20156 Milano, Italy;RSE—Ricerca sul Sistema Energetico S.p.A., 20134 Milano, Italy;

关键词: oxygen transport membrane;    LSCF;    perovskite;    glass melting;    oxy-fuel combustion;   

DOI  :  10.3390/membranes10120442

来源: DOAJ

【 摘 要 】

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 NO_x 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 μm thick dense La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ (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 ~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.

【 授权许可】

Unknown