Exergy analysis of a chemical looping combustion process with a Ni-based oxygen carrier
Combustion of gaseous fuels is one of the main energy sources used today due to its simplicity compared to other energy conversion systems.However,this process releases large amounts of carbon dioxide that are difficult to separate from the combustion products by conventional methods,which has resulted in the advent of new technologies such as chemical looping combustion(CLC).In this paper,the concept of exergy is used to perform a comparison between the conventional combustion process and the CLC process with nickel oxide as the oxygen carrier.In order to obtain the mass flow rates and stream temperatures of the studied systems,processes were simulated withthe software Aspen Plus v7.1 using methane and hydrogen as fuels.The exergetic efficiencies obtained were 16.6%and 74.6%for the conventional combustion of methane and hydrogen respectively,and 70.1%and 95.9%for the CLC process with methane and hydrogen respectively.The lower exergetic efficiency of the conventional combustion is caused by the exergy loss of mixing.
Exergy analysis Fuel Combustion Chemical looping combustion Oxygen carrier
J.C.Maya-López H.I.Velásquez-Arredondo F.Chejne
Universidad Nacional de Colombia Sede Medellín,Medellín,Colombia
国际会议
桂林
英文
1-10
2013-07-16（万方平台首次上网日期，不代表论文的发表时间）