摘要
通过参数估计和模型筛选，获得了正庚烷和ＭＦＴ模型混合物在ＺＳＭ５分子筛催化剂上的结焦动力学方程，模型能够和实验数据较好地关联，最大相对误差不超过±２０％。用正庚烷模拟ＦＴ合成产物中碳数小于１１烃在ＺＳＭ５分子筛催化剂上的结焦，用ＭＦＴ模型混合物来模拟ＦＴ合成产物中Ｃ＋１２烃在ＺＳＭ５上的结焦，则：Ｃ＝３１．５３ｅ１４８９６．７４ＲＴｔ０．３３ｆ０．２２１＋１７３．１９ｅ１７６２８．１３ＲＴｔ０．２０ｆ０．２９２能够较准确地预测ＭＦＴ中试改质反应器入口附近分子筛催化剂上的焦含量。结合本研究的第一部分，对不同反应原料在ＺＳＭ５上的结焦行为进行了比较，表明ＺＳＭ５上的结焦很可能是一个扩散控制过程。
Based on the lumped kinetic models for the coking over ZSM5 catalyst developed in part one of this study, the coking kinetic equations of nheptane and MFT process model mixture are obtained by fitting the experimental data with a relative error not more than ±20% By using nheptane as a model compound of C 11 hydrocarbons, and the MFT process model mixture as C + 12 hydrocarbons in FT products, the following equation: C=31 53e 14896 74RT t 0 33 f 0 22 1+173 19e 17628 13RT t 0 20 f 0 29 2 can be used to predict the coke content over ZSM5 catalyst at the nearby inlet region of the industrial reactor for MFT reforming preciesely According to the kinetic parameters of different reactants, the coking property of different feeds over ZSM5 is compared It would be possible that the coking over ZSM5 is a diffusioncontrolled process
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1998年第6期554-558,共5页
Journal of Fuel Chemistry and Technology
