Influence of temperature on oxygen permeation through ion transport membrane to feed a biomass gasifier

[摘要] Oxygen-permeable perovskite membranes with mixed ionic-electronic conducting properties can play an important role in the high temperature separation of oxygen from air. A detailed design of a membrane test module is presented, useful to test mechanical resistance and structural stability of Ba0.5Sr0.5Co0.8Fe0.2O3-δ(BSCF) capillary membrane in the reactor environment. Preliminary experimental results of membrane permeation tests highlight the positive effect of temperature on perovskite materials. This behaviour is also confirmed by a computational model of char combustion with oxygen permeated through the membrane module, when it is placed inside a gasifier reactor to provide the necessary input of heat to the gasification endothermic process. The results show that the temperature affects the oxygen permeation of the BSCF membrane remarkably.

[发布机构] Industrial Engineering Department, University of l'Aquila, Via G. Gronchi, L'Aquila; 1867100, Italy^1;ENEA, Casaccia Research Centre, Roma; 00100, Italy^2

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Conducting properties;Effect of temperature;Endothermic process;High temperature separation;Ion transport membranes;Mechanical resistance;Perovskite membranes;Structural stabilities