Abstract: By optimizing the activity and stability of the catalyst, SINOPEC Research Institute of Petroleum Processing Co., Ltd. has developed a new generation catalyst named RCS-300 with residue hydrodesulfurization and residue carbon reduction. RCS-300 has higher impurity removal activity than the previous generation catalyst and has good stability. Through catalyst grading optimization tests, a catalyst grading scheme tailored to the needs of the residue hydrotreating unit of SINOPEC Shanghai Petrochemical Co., Ltd. has been determined. Commercial application results indicate that the optimized catalyst grading scheme not only maintains the overall desulfurization activity of the catalyst but also enhances its hydrodemetallization performance, which is beneficial for extending the operation cycle of the unit and improving the economic benefits of the enterprise.

Key words: RDS, desulfurization, residue carbon reduction, catalyst gradation