超声波协同催化剂低温裂解超稠油实验研究

以超声波协同催化剂裂解超稠油,研究了催化剂浓度、反应温度、时间和加水量对超稠油裂解效果的影响,分析了超稠油处理前后的族组成及平均分子量变化。结果表明,超声协同催化剂裂解超稠油最佳反应条件为:催化剂浓度0.3%,反应温度150℃,时间10 h和加水量50%。与催化水热裂解相比,超声辅助催化水热裂解使稠油分子质量进一步减小,轻烃含量增加,重质组分含量减少;超声波与催化剂间具有协同效应,超声波作用可促进稠油催化水热裂解反应,提高稠油裂解效果,降低反应条件。

Experimental study on ultrasonic assisted catalytic aquathermolysis of ultra-heavy oil

Ultrasonic was applied to assist catalytic to reduce the viscosity of ultra-heavy oil of Shengli Oilfield.The effect of catalyst concentration,reaction temperature,time and water yield on the viscosity-reduction rate of ultra-heavy oil were studied.Also,the SARA and average molecular weight of heavy oil before and after reaction were analyzed.The results showed that the optimal reaction conditions were catalyst concentration 0.3%,reaction temperature 150 ℃,time 10 h and water yield 50%.Compared with catalytic aquathermolysis reaction,the content of resin and asphaltene is decreased and the average molecular weight of heavy oil is reduced after the catalytic aquathermolysis assisted by ultrasonic.The combination of ultrasonic and catalyst has a synergetic function to the reaction,which attributes to the reduction of viscosity and improvement of the heavy oil quality and reduction of catalytic aquathermolysis reaction conditions of ultra-heavy oil.