Abstract: The data of liquid yields and product qualities of MIP unit in Shanghai petrochemical Co. were compared with the results of traditional FCC units of west pacific petrochemical Co. and Maoming petrochemical Co. They all use hydrotreated residue as feedstock. The commercial data show that MIP technologies, although processing poorer quality of hydrotreated residue feedstocks, has higher total liquid yield, higher gasoline and lower slurry yields. Compared with the results of conventional FCC technologies, the liquid yield of MIP is higher about 1.35-3.23 percent points. MIP technology can achieve gasoline with lower olefin and sulfur content and higher octane number. MIP process based on the unique double reaction sections in series in one riser reactor intensifies the heavy oil conversion and the quality of gasoline, and has more advantages in processing hydrotreated residue than common FCC.

Key words: FCC, residue hydrotreating, combined process, MIP technology, advantage analysis