Abstract: Industrial application of the second generation RHT series residue hydrotreating catalysts developed by Research Institute of Petroleum Processing was carried out at the 3.1 Mt/a RDS unit of SINOPEC Hainan Company for FCC feedstock pretreatment. The operation results showed that this new generation RHT series catalysts exhibited high hydrordesulfurization activity and good performance of removing carbon residue in feedstocks, especially during the mid and late operation period as compared with imported catalysts. The operation period of this new generation RHT series catalysts was prolonged for more than two months due to the good stabilities of catalysts.

Key words: residue, hydrotreating, catalyst, hydrodesulfurization, carbon residue