Oxygen transfer capacity, maximum reduction rate, agglomeration characteristics, and attrition resistance were measured and compared for five new oxygen carriers to select the best oxygen carrier for chemical looping combustion system. TGA was used to...
Oxygen transfer capacity, maximum reduction rate, agglomeration characteristics, and attrition resistance were measured and compared for five new oxygen carriers to select the best oxygen carrier for chemical looping combustion system. TGA was used to check reduction reactivity for four kinds of reduction gas conditions. Small scale fluidized bed reactor was used to check the agglomeration behavior of oxygen carriers after reduction and oxidation reaction. ASTM D5757-95 apparatus was used to measure attrition index. Among five oxygen carriers, LOC-023, LOC-031, and LOC-032 particles formed agglomerates after reduction and oxidation reaction. There was no significant difference in the maximum reduction rate for N010 and N002-R1 particles. However, N010 particle showed almost same oxygen transfer capacity for different reduction gas conditions. Attrition loss of N002-R1 was much higher than that of N010. Consequently, N010 particle was selected as the best oxygen carrier for chemical looping combustion system from the view points of reduction reactivity, agglomeration, and attrition resistance.