미분탄과 목재 바이오매스 혼합 연료의 연소 및 열분해 특성에 관한 연구
A study on characteristics of combustion and thermo pyrolysis in co-firing with pulverized coal and wood biomass
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The effect of co-firing with pulverized coal and wood biomass on ignition and burn-out temperature was investigated at air and oxy-fuel conditions by thermo gravimetric analyzer(TGA). Three kinds of coal(shenhua, adaro, wira) were selected and mixing ratios of coal and wood biomass was set to 1, 0.5, and 0.8. The ignition temperature depended on the amount of volatile matter of blended fuel, while the burn-out temperature was dominated by the oxidant ingredients. The oxy-fuel condition with an oxygen ratio(Ofr,o)of 0.3 showed similar tendency with air condition in the heat flow measurement. Volatile matter reaction,however, became dominant when oxygen ratio exceeded 0.8 for co-firing combustion of mood biomass and pulverized coal.
Abstract
The effect of co-firing with pulverized coal and wood biomass on ignition and burn-out temperature was investigated at air and oxy-fuel conditions by thermo gravimetric analyzer(TGA). Three kinds of coal(shenhua, adaro, wira) were selected and mixing ratios of coal and wood biomass was set to 1, 0.5, and 0.8. The ignition temperature depended on the amount of volatile matter of blended fuel, while the burn-out temperature was dominated by the oxidant ingredients. The oxy-fuel condition with an oxygen ratio(Ofr,o)of 0.3 showed similar tendency with air condition in the heat flow measurement. Volatile matter reaction,however, became dominant when oxygen ratio exceeded 0.8 for co-firing combustion of mood biomass and pulverized coal.
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