加氢裂化预处理催化剂功能分区研究

探究加氢裂化预处理过程中催化剂功能分区以及区域的反应规律,考察了在反应压力15.7 MPa、反应温度370℃、液态空速1.0 h-1、氢油体积比800的条件下,不同预处理催化剂功能区域脱氮率、脱硫率、芳烃转化率以及产品油的油品性质的差异.实验结果表明,原料油经过各反应区后油品性质不断提高,其中第一反应区影响最大,第一反...

Study on functional reaction zone of hydrocracking pretreatment catalyst

The catalyst function partition and reaction rule in hydrocracking pretreatment process was investigated,under the conditions of reaction pressure 15.7 MPa,reaction temperature 370℃,LHSV 1.0 h^-1,hydrogen/oil volume ratio 800.The rate of hydrodenitrogenation(HDN),hydrodesulfurization(HDS)and aromatics conversion,together with the properties of production oil in different functional reaction zones of catalyst were also studied.The results show that the properties of the oil are continuously improved after passing through each reaction zone,among which the first reaction zone has the greatest contribution.The highest rate of HDN occurs at the first reaction zone,while there is a trend of decreasing in the rate of HDN,increasing in the rate of HDS and aromatics conversion from the second to the fourth reaction zones.Meanwhile,the content of aromatics,cycloalkanes and alkanes keeps decreasing,increasing and almost unchanged,respectively.