초임계 n-dodecane의 흡열분해 화학반응 모델 개발을 위한 실험적 연구
Experimental Study for Development of Endothermic Decomposition Model of Supercritical n-Dodecane
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초록
The pyrolysis characteristics of hydrocarbon aviation fuel have a significant impact on the cooling performance of active regenerative cooling systems for hypersonic vehicles and the combustion performance of scramjet engines. Therefore, this study aimed to investigate the thermal cracking characteristics of n-dodecane, the main component of hydrocarbon jet fuel, using a batch reactor experimental setup. In particular, since fuel in actual regenerative cooling channels reaches a supercritical state, experiments were conducted to allow pyrolysis at pressures of 4 MPa, temperatures ranging from 500 to 600°C, and reaction times between 100 and 220 seconds. Under these reaction conditions, the maximum fuel conversion and gas production rates were found to be approximately 80% and 42%, respectively. Furthermore, based on the experimental results, the distribution of gas and liquid products according to fuel conversion was quantitatively analyzed, and a global one-step reaction PPD(Proportional Product Distribution) model for n-dodecane was developed.
Abstract
The pyrolysis characteristics of hydrocarbon aviation fuel have a significant impact on the cooling performance of active regenerative cooling systems for hypersonic vehicles and the combustion performance of scramjet engines. Therefore, this study aimed to investigate the thermal cracking characteristics of n-dodecane, the main component of hydrocarbon jet fuel, using a batch reactor experimental setup. In particular, since fuel in actual regenerative cooling channels reaches a supercritical state, experiments were conducted to allow pyrolysis at pressures of 4 MPa, temperatures ranging from 500 to 600°C, and reaction times between 100 and 220 seconds. Under these reaction conditions, the maximum fuel conversion and gas production rates were found to be approximately 80% and 42%, respectively. Furthermore, based on the experimental results, the distribution of gas and liquid products according to fuel conversion was quantitatively analyzed, and a global one-step reaction PPD(Proportional Product Distribution) model for n-dodecane was developed.