论文部分内容阅读
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。
Through parameter estimation and model screening, the kinetic equation of cokes of n-heptane and MFT mixture on ZSM5 molecular sieve catalyst was obtained. The model can be well correlated with the experimental data, and the maximum relative error is less than ± 20%. Coking of C + 12 hydrocarbons in FT synthesis product on ZSM5 was simulated with n-heptane to simulate the coking of hydrocarbons with carbon number less than 11 on ZSM5 molecular sieve catalyst in FT synthesis by using MFT model mixture: C = 31.53e14896.74RTt0. 33f0.221 + 173.19e17628.13RTt0.20f0.292 can more accurately predict the coke content on the molecular sieve catalyst near the entrance of MFT pilot reforming reactor. Combined with the first part of this study, the coking behavior of different reactive materials on ZSM5 was compared, indicating that coking on ZSM5 is probably a diffusion control process.