New Model for Calculating Hydrogen Consumption in Residue Hydrotreating

In this paper,hydrogenation of CH to CH_(2)(HDCH reaction)was employed to simulate the hydrogen consumption during residue hydrotreating,because the pseudo components,CH and CH_(2),can be converted with the content of C and H.Through a pilot-scale experiment,a kinetic model for the HDCH reaction was constructed and it has high accuracy.By analyzing the running data of an industrial-residue hydrotreating unit,the activity change of the HDCH reaction was obtained using the active-region-migration deactivation model.The obtained HDCH activity model has high accuracy,where the frequencies of>10%relative errors are less than 1%for the CH and H contents.The hydrogen consumption model,the coupling of the HDCH kinetic model and the HDCH deactivation model,can be applied to calculate the hydrogen consumption.For case 2,where the hydrogen consumption model is adjusted every 100 days,the calculated data well match the real data compared to case 1,where the hydrogen consumption model is unadjusted over the whole runtime.