摘要
To investigate the effect of unsaturated aliphatic hydrocarbons on PAHs （polycyclic aromatic hydrocarbons） formation, numerical analysis using detailed reaction mechanism is performed. For the carbon black produced by benzene feedstock, three kinds of unsaturated aliphatic hydrocarbons （acetylene, diacetylene, and vinylacetylene） are added. The detailed reaction mechanism which is proposed by Wang and Frenklach is consisted by 527 reactions and 99 chemical species. The formations of PAHs and nuclei are promoted by unsaturated aliphatic hydrocarbons addition. There exits optimal benzene/acetylene ratio （XA/XB = 0.50）, benzene/diacetylene mixture ratio （XD/XB = 0.60）, benzene/vinyl-acetylene mixture ratio （XV/XB = 0.25）. The formation of nuclei is most promoted by acetylene addition, and the benzene/acetylene mixture ratio is 0.50.
