柴油加氢过程氢耗动力学模型及最优氢耗方案

Hydrogen Consumption Kinetic Model and Optimal Hydrogen Consumption Scheme for Diesel Hydrogenation Process

采用微型高通量加氢实验装置对柴油加氢过程中的化学氢耗进行研究,将化学方程法计算得到的氢耗数据带入幂函数方程,建立了单一催化剂(CoMo或NiMo催化剂)沿反应器轴向加氢反应动力学模型。研究发现:将所建立的CoMo和NiMo的单一催化剂动力学模型进行组合可用于预测催化剂级配体系的氢耗数据;与单一NiMo催化剂装填方案相比,NiMo和CoMo混合级配由上至下的装填方案V(NiMo)/V(CoMo)=3时的氢耗更低,总氢耗降低了8.4%;且动力学拟合值与实验计算值的相对误差为4.5%。

The chemical hydrogen consumption during hydrogenation of diesel oil was studied using a miniature high-throughput hydrogenation experimental device.Meantime,the hydrogen consumption data calculated by the chemical equation method were put into the power function equation to establish the hydrogenation kinetics model of single catalyst(CoMo or NiMo catalyst)along the reactor axis.It is found that the combination of the single catalyst kinetic models CoMo and NiMo can be used to predict the hydrogen consumption data of catalyst gradation system.Compared with the single NiMo catalyst loading scheme,the hydrogen consumption of NiMo and CoMo hybrid gradation loading scheme V(NiMo)/V(CoMo)=3 from top to bottom is lower,the hydrogen consumption has lowered by 8.4%,and the relative error between the kinetic fitting results and the experimental results is 4.5%.