PRODUCTION OF LOW OLEFIN NAPHTHA IN HEAVY OIL FCCU

The commercial trial and production of low olefin content naphtha with MGD technology in the heavy oil FCCU of SINOPEC Baihai Company were introduced. The production result showed that processing atmospheric residue over RGD-C catalyst and combined the MGD technology with optimizing operation conditions, such as naphtha recycle, keeping higher equilibrium catalyst activity and lowering the reaction temperature, etc., could reduce the cracked naphtha olefin content from 54.3 v% to 28.0 v%. The naphtha RON only slightly changed, however, the MON and antiknock index enhanced obviously. The LPG and LCO yields increased by 3.98 and 0.43 percentages respectively, and the naphtha and slurry yields decreased by 2.15 and 3.02 percentages respectively.