Calculation and analysis of combustion process for ethanol and DME premix flames
1.School of Automobile and Traffic Engineering， Jiangsu University， Zhenjiang， Jiangsu 212013， China; 2.Department of Mechanical Engineering， Henan Institute of Engineering， Zhengzhou， Henan 450000， China)
Abstract： According to the low pressure premix flame CHEMKIN model, the chemical change of combustion process was simulated for the same quantity of ethanol and dimethyl ether which have different functional group with same molecular formula. The intermediaries and the difference of OH, H, O radicals were compared. The chemical change of consumption process of ethanol and dimethyl ether were investigated by rate of production and sensitivity analysis.The sensitive analysis to the combustion product of ethylene and the formaldehyde were also investigated. The results indicate that functional group has tremendous influence on the formation of fuel combustion and pollutant.With carrier gas of nitrogen for same flame altitude, the reaction rate of dimethyl ether is bigger than that of ethanol with more quantitative product of OH，H，O radicals than those of ethanol. The combustion product of ethylene for dimethyl ether is less than that for ethanol, while the situation is the opposite for formaldehyde product.The main reason is the bondbreak and rebond of C—C bond.
李立琳1，2, 王忠1, 李铭迪1, 陈林1, 许广举1. 乙醇和二甲醚预混火焰燃烧过程的计算与分析[J]. 江苏大学学报（自然科学版）, 2012, 33(4): 396-401.
LI Li-Lin-1，2, WANG Zhong-1, LI Ming-Di-1, CHEN Lin-1, XU Guang-Ju-1. Calculation and analysis of combustion process for ethanol and DME premix flames[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2012, 33(4): 396-401.
2012, Vol. 33 
