Methane Combustion in a 500 Wth Chemical-Looping Combustion System Using an Impregnated Ni-Based Oxygen Carrier

摘要: Chemical-looping combustion (CLC) is a promising method for the of fuel gas with CO 2 capture and sequestration (CCS). This paper presents methane results obtained in continuous CLC prototype using an oxygen carrier containing 18 wt % NiO impregnated on alumina. The design was circulating fluidized bed reactor, consisting two interconnected reactors, reactor (FR) air (AR). main operating conditions affecting combustion, such as flow, solids circulation rate, FR temperature, were analyzed. operation carried out thermal power between 500 850 W th . successfully operated during 100 h, which 70 h at conditions. No detected exit, H being unconverted gases. Increasing temperature or rates increased efficiency, reaching efficiency values high 99% temperatures range 1073-1153 K, solid inventory 600 kg per MW effect performance During prototype, no signs agglomeration carbon formation properties particles did not vary. different phases carrier, NiAl O 4 , active to transfer gas. NiO/NiAl ratio decrease affected reactivity carrier.