摘要
根据工业上对渣油裂化产物质量评估的实际要求,本文按照固定沸程划分集总组分对渣油加氢催化裂化反应动力学模型进行分析研究,通过对Mo-Ni系列催化剂上渣油加氢裂化反应过程分析,认为该过程具有明显的连串反应特点,并据此提出新的反应网络,建立了六集总反应动力学模型。该模型考虑了大于524℃组分转化对产品分布的影响,用四组分SARA法对残渣油进行分析,将沥青质和胶质、芳香分和饱和分划分为两个集总组分;小于524℃部分划分为减压馏分油(VGO)、中间馏分油、石脑油和气体等4个集总组分。六集总模型简洁且清楚地模拟了Mo-Ni系列催化剂存在下渣油加氢裂化和产品生成的过程。结果表明,该模型的反应网络清晰合理,可以较好地预测产品分布;模型参数少(5个),便于实际应用。
In the presence of Mo-Ni series catalyst, the process of residuum catalytic hydrocraeking was analyzed. A new reaction network was proposed on the basis of the kinetic models and the characteristics of series reaction for residuum catalytic hydrocracking. For evaluating the product qualities during residuum catalytic hydroeracking, 6-lumping kinetic model is developed when the boiling range of the pseudo component is regular. This model can predict the kinetics of residue （〉 524 ℃） conversion and the yields of distillate products for residuum conversion. The residuum is consistent with the observed cracking behavior of residuum components. The performance of residue cracking and product formation is described. The reaction network of this model is facile and reasonable. The mathematical model can predict the product yields efficiently, and the results fit the experimental data fairly well. The mathematical difficulty of parameter estimation is avoided （only 5 parameters）, so this model can be applied easily.
出处
《大连工业大学学报》
CAS
北大核心
2009年第3期184-187,共4页
Journal of Dalian Polytechnic University
关键词
渣油
加氢裂化
动力学模型
集总
连串反应
residuum
hydrocracking
kinetic model
lumping
series reaction
