减压渣油热转化集总动力学的建模研究  

Modeling Study on Lumping Kinetics for Thermal Cracking of Vacuum Residue

作　　者：阎龙[1] 张金先[2] 申海平[1] 范启明[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083 [2]中国石化广州分公司,广州510726

出　　处：《石油学报（石油加工）》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

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.

关 键 词：减压渣油 热转化 动力学 建模 数学分析 

分 类 号：TE624[石油与天然气工程—油气加工工程]