水溶性配合物催化的稠油低温热裂解研究

在一种新型稠油低温裂解催化体系中合成了两个系列10个过渡金属配合物催化剂。该反应体系中水对原油热降解反应有一定的影响,合适的用量水/油(质量比)为0.3。部分合成水溶性催化剂180℃下对稠油热裂解具有明显的催化作用,催化剂N5的降凝作用效果最好,经催化水热降解改质反应后原油的凝点降低11.4℃;催化剂N2和N5的催化降黏效果较好,降黏率可达70%以上,催化剂N5的最佳用量为0.5%;热重分析和气相色谱分析显示原油热催化降解反应后轻质组分明显增加。

Study on aquathermolysis of heavy oil at relatively low temperature catalyzed by water-soluble complexes

Two series of ten transition metal complexes were prepared as the catalysts for the catalytic aquathermolysis of heavy oil at relatively low temperature. In this reaction system, the dosage of water can affect the aquathermolysis efficiency, and the proper mass fraction of water/oil is 0.3. Some complexes can catalyze the aquathermolysis effectively at 180 ℃, in which N₅ catalyst is the most effective one to drop the pour point with 11.4 ℃, while N₂ and N₅ catalysts are the most effective ones to reduce the viscosity by more than 70%. The proper dosage of N₅ catalyst in this reaction system is 0.5%. TG and GC analysis show that the light components increase remarkably after the aquathermolysis.