Abstract: In the paper, HDCH reaction was employed to simulate the hydrogen consumption during the residue hydrotreating, because the pseudo components- CH and CH2 can be converted with the content of C and H. Through the pilot-scale experiment, the kinetic model of HDCH reaction was constructed and it has high accuracy. By analyzing the running data of industrial residue-hydrotreating unit, the activity change of HDCH reaction was obtained by using the active-region-migration deactivation model. The obtained HDCH activity model has high accuracy that the frequencies of >10% relative errors are less than 1% for CH and H contents. The hydrogen consumption model, the coupling of the HDCH kinetic model and HDCH deactivation model, can be applied to calculate the hydrogen consumption. By adjusting the hydrogen consumption model every 100 days in case 2, the calculated data can match well with the real data when comparing with case 1.

Key words: HDCH, kinetics, deactivation, hydrogen-consumption, model