Abstract: Using five different kinds of residue as raw materials, the residue deep hydrotreating technology was developed from different perspectives such as catalyst development, catalyst grading technology development, process condition optimization, and raw material adaptability investigation. The investigation showed that the activity of the newly developed catalysts was significantly higher than that of the conventional catalysts, and the reaction temperature was the most critical factor affecting the hydrogenation depth. Under the optimized catalyst grading and process conditions, the residue deep hydrotreating technology achieved high-efficiency removal of heteroatoms and a significant increase in hydrogen content, and also realized the directional conversion of the dominant hydrocarbon which can produce more chemicals. The results also showed that the atmospheric residue with high sulfur and low nitrogen was suitable to be used as the feedstock of the residue deep hydrotreating technology to produce high quality catalytic cracking feedstock.

Key words: residue deep hydotreating, hydrogen content, directional conversion, deep catalytic cracking feedstock