摘要
以洛阳减压渣油为例,研究了减压渣油热转化集总动力学模型。对洛阳减压渣油分别在410、420、430和440℃下进行的热转化反应,通过数学分析建立了6集总动力学反应模型。减压渣油热转化反应生成裂化气、汽油、轻瓦斯油、重瓦斯油与焦炭,其反应均为2级反应;轻、重瓦斯油将继续发生2次反应,生成焦炭;动力学参数中缩合反应的活化能大于裂化生成馏分油的活化能,表明缩合反应对反应温度的变化更为敏感。计算结果表明,所建模型可以用来预测减压渣油热转化反应产物分布,预测值与实验值吻合较好。
In order to study the modeling for lumping kinetics of thermal cracking of petroleum residues, Luoyang vacuum residue（VR） was thermally cracked at 410, 420, 430 and 440℃. The concentrations of six pseudo-components, residue, gas, gasoline, light gas oil, heavy gas oil and coke, were detected during conversion, and the experimental data was used to define the kinetic model by mathematical analysis. A six-lump model was proposed which considered parallel reactions for gas and gasoline formation, and consecutive reactions for light gas oil and heavy gas oil. Conversion data fitted second-order kinetics. The kinetic parameters were calculated, and the activation energy of condensation reaction was more than that of cracking reactions to liquid products, indicating a greater dependence on temperature for the former. The simulation results showed that the model could be used to predict product distribution, because the predicted data fitted the experimental results well.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2011年第4期561-566,共6页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
中国石油化工股份有限公司项目(109110)资助
关键词
减压渣油
热转化
动力学
建模
数学分析
vacuum residue
thermal cracking
kinetics
modeling
mathematical analysis
