개질기용 Anode Off Gas의 연소특성에 관한 연구
Combustion Characteristic of Anode Off Gas for Fuel Cell Reformer
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The reformer system is a chemical device that drives the conversion of hydrocarbon to hydrogen rich gas under high temperature environment(600-1000℃). Generally, NG(Natural Gas) or AOG(Anode Off Gas) is used as fuel of fuel cell reformer combustion system. The experimental study to analyze the combustion characteristics of a premixed ceramic burner used for 0.5-1.0kW fuel cell reformer was performed. Ceramic burner experiments using NG and AOG were carried out to investigate the flame stability characteristics by heating capacity, equivalence ratio and different fuels respectively. The results show that surface flames can be classified into green, red, blue and lift-off flames as the equivalence ratio of methane-air mixture decreases. And the stable flames can be established using NG and AOG as reformer fuel in the perforated ceramic burner. In particular, the blue flame is found to be stable at a lean equivalence ratio under different mixture conditions of NG and AOG for the 0.5 to 1.0kW fuel cell system power range. NOx emission is under 60ppm between 0.70 to 0.78 of equivalence ratio and CO emission is under 50ppm between 0.70 to 0.84 of equivalence ratio.
Abstract
The reformer system is a chemical device that drives the conversion of hydrocarbon to hydrogen rich gas under high temperature environment(600-1000℃). Generally, NG(Natural Gas) or AOG(Anode Off Gas) is used as fuel of fuel cell reformer combustion system. The experimental study to analyze the combustion characteristics of a premixed ceramic burner used for 0.5-1.0kW fuel cell reformer was performed. Ceramic burner experiments using NG and AOG were carried out to investigate the flame stability characteristics by heating capacity, equivalence ratio and different fuels respectively. The results show that surface flames can be classified into green, red, blue and lift-off flames as the equivalence ratio of methane-air mixture decreases. And the stable flames can be established using NG and AOG as reformer fuel in the perforated ceramic burner. In particular, the blue flame is found to be stable at a lean equivalence ratio under different mixture conditions of NG and AOG for the 0.5 to 1.0kW fuel cell system power range. NOx emission is under 60ppm between 0.70 to 0.78 of equivalence ratio and CO emission is under 50ppm between 0.70 to 0.84 of equivalence ratio.
참고문헌 (11)
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