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分析了现有4种蒸汽热裂解动力学模型的优缺点和局限性,同时介绍了利用分子模拟手段进行的分子尺度动力学模型的研究进展。通过对上述文献的分析、总结,提出了对今后裂解动力学研究方法的一些看法,认为应建立具有一定外推性和有一定准确度预测性的动力学模型,充分考虑不同分子结构的烃类在裂解自由基反应过程中动力学规律的不同,进一步完善目前已建立的模型及所用的数学手段,对复杂原料的实验研究应将分子模拟得到的预测结果通过理论分析得到的新观点进行实验。
The advantages, disadvantages and limitations of the four steam pyrolysis kinetic models are analyzed. The progress of the molecular-scale kinetic model using molecular simulation is also introduced. Based on the analysis and summary of the above documents, some opinions on the future research methods of lysis kinetics are put forward. It is believed that a kinetic model with certain extrapolation and predictability with certain accuracy should be established and the hydrocarbon with different molecular structures In the process of pyrolysis of free radicals, the kinetic laws are different. The existing models and the mathematical methods used are also improved. The experimental study of complex raw materials should be based on the new ideas obtained by theoretical analysis.