Heterogeneous modeling of chemical-looping combustion. Part 2: Particle model

摘要: Abstract The objective of this work is to investigate the influence particle properties on reactivity Ni-based oxygen carriers in chemical-looping reduction. On basis a model, which considers effects internal, interparticle and external diffusion reaction kinetics for systems, thermogravimetric investigations are analyzed interpreted. challenge addressed quantify contribution variations size, microstructure, chemical deactivation carrier reactivity. For range sizes, intraparticle quantified shown be accurately captured by model. Therefore, optimal can designed minimize limitations, while satisfying fluidization pressure drop requirements. effect gradual changes microstructure due redox cycling through case studies sensitivity analyses their framework analysis assumes that incorporating these measured changes, it possible explain performance over lifespan eventually design systems. Experimental data from literature obtained utilized provide insights contributions pore spinel formation surface area controversies terms natural consequence transient properties.