金属盐和油层矿物存在下的稠油水热裂解反应动力学

Reaction kinetics of aquathermolysis of heavy oil in presence of metallic salt and formation mineral

根据金属盐和油层矿物存在下的稠油水热裂解反应实验结果,建立包括气体、饱和烃、芳香烃、胶质和沥青质在内的五集总动力学模型,并求取模型中的反应速率常数和活化能.计算结果表明,胶质作为主要反应中心,是气体、芳香烃和饱和烃等轻组分含量增长的主要来源.沥青质主要转化成胶质,裂化产物较少.实验数据与计算结果较吻合,所提出的五集总动力学模型可用来描述金属盐和油层矿物存在下的稠油水热裂解反应规律.

Aquathermolysis reaction of heavy oil in the presence of metallic salt and formation mineral was studied. A five-lumped kinetics model, comprising of gas, saturate, aromatic, resin and asphaltene, was established on the basis of experimental results. The reaction rate constant and the activation energy were calculated by using the Runge-Kutta integral and complex method. The results indicated that resin was the center of reactions and main source of light component increase such as gas, aromatic and saturate.Asphaltene changed into resin mainly. The model prediction was consistent with the experimental data,which suggested that the five-lumped kinetics model is reasonable.