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采用Al_2O_3吸附色谱分别将胜利、大庆、任丘及单家寺原油的减压渣油分离成饱和分、芳香分、胶质及沥青质4个族组分,然后在热分析装置上考察它们的热反应行为。根据实验结果,讨论了减压渣油族组分的生焦性能及其对渣油生焦能力的贡献;分析了族组分的热反应活性及其与渣油热稳定性的关系;取得了各族组分热反应的动力学特征值,如速率峰值、速率峰值温度及速率峰值处的转化率等,并在coats-Redfern方法的基础上采用分段拟合方法满意地关联了减压渣油族组分的热反应实验数据,确定了有关的动力学参数,建立了相应的渣油族组分热反应速率模型。
The Al 2 O 3 adsorption chromatography was used to separate the vacuum residuum of crude oil from Shengli, Daqing, Renqiu and Shanji temple into four components of saturated, aromatic, glial and asphaltene, respectively, and then their thermal analysis devices were investigated Thermal reaction behavior. According to the experimental results, the char properties of vacuum residue family components and their contribution to the coke-making capacity of residual oil were discussed. The thermal reactivity of the family components and their relationship with the thermal stability of the residuum were analyzed. The kinetic eigenvalues of the thermal responses of each component, such as the rate peak, the rate peak temperature and the rate at the peak of the rate of change, etc., and based on the coats-Redfern method, a piecewise fitting method is used to satisfactorily correlate the vacuum residue According to the experimental data of the thermal reaction of the oil components, the relevant kinetic parameters were determined and the corresponding thermal reaction rate model was established.