Supercritical thermal decompositions of normal- and iso-dodecane in tubular reactor

作者：Jiang Rongpei; Liu Guozhu^*; He Xiuyan; Yang Caihua; Wang Li; Zhang Xiangwen; Mi Zhentao

来源：Journal of Analytical and Applied Pyrolysis, 2011, 92(2): 292-306.

DOI：10.1016/j.jaap.2011.07.001

• Supercritical condition
• Thermal decomposition
• Coking
• Hydrocarbon mixture

Thermal decompositions of a serials of normal- and iso-dodecane mixtures with different iso/normal ratios were performed in a tubular reactor under supercritical conditions (550-680 degrees C, 4.0 MPa). It was found that iso-dodecane has an accelerating effect on the pyrolysis of n-dodecane depending upon iso/normal ratio of the mixture, and that accelerating factor reaches up to almost 4 at isolnormal ratio of 3/1. Decomposition conversions of the mixtures show a strong dependence on the iso/normal ratio and the temperature owing to their possible effect on the radical generation mechanism and the decomposition kinetics. In addition, iso/normal ratio of the mixture also affects the formation rates and morphologies of cokes due to the variation of decomposition conversion.

• 出版日期2011-11
• 单位天津大学