Modeling and simulation for the hydrocracking reactor

A simplified six-lump-model for one practical residue hydrocracking reactor has been developed according to the characteristics of hydrocracking reaction. The model, including six lumps (crude oil, diesel oil, aviation kerosene, heavy naphtha, light naphtha and gas), took both mass balance and kinetics equations into consideration. Only fifteen kinetic parameters of the model need to be estimated, which was half less than that of literature^[1], and the parameters were estimated with the measured industrial data shown in literature^[1] by Nelder-Mead minimization algorithm. The distribution of the hydrocracking product yields along the reactor position and the reaction time can be predicted by solving this simplified lump-model. The calculated result was compared with the measured industrial value and all the relative deviations were within 5% which was close to the literature^[1].