重瓦斯油及其窄馏分加氢反应性能考察

对Athabasca油砂沥青重瓦斯油以及不同馏程范围的窄馏分的物化性质进行了考察。结果显示 ,随着馏分沸程的增加 ,硫、氮等杂原子含量以及碱性氮和非碱性氮含量的增加。各种不同馏程范围馏分以及窄馏分的加氢精制反应性能表明 ,馏分中的氮化物含量 ,尤其是非碱性氮化物的含量 ,与其脱氮反应性能有密切关系。随着馏分终馏点的增加或者随着窄馏分馏程的变重 ,加氢脱硫和加氢脱氮转化率以及碱性氮和非碱性氮转化率均有所降低 ,其中非碱性氮的转化率下降幅度较大。由窄馏分的加氢反应性能考察可知 ,各类化合物的易脱除顺序为 :含硫化合物 ,碱性氮化物 ,非碱性氮化物

Investigation of physiochemical properties of different boiling fractions

The physiochemical properties of different boiling fractions derived from Athabasca bitumen heavy gas oil were investigated and tested in high-pressure microhydrotreator over a commercial Ni-Mo/Al-2O-3 catalyst. The results showed that the amounts of sulfur, total nitrogen, basic nitrogen and non-basic nitrogen increased with the fraction boiling ranges. The reaction mechanisms of these distillates and narrow cuts were studied under different conditions. As the boiling range increased, the conversion rates of total sulfur, total nitrogen, basic and non-basic nitrogen decreased, which shows a relationship between the amount of non-basic nitrogen and the reactivity of reactant. The removal of sulfur compounds was comparatively easier than that of nitrogen compounds, and the removal of non-basic compounds was the most difficult.