Abstract: The operation of 50 FCC units in SINOPEC refinery over the past two years is systematically summarized. In view of the operation of the plant, adjustment of product structure, energy conservation and emissions reduction, and the operation condition of new technology and new process, the operation experience was summarized and the optimization suggestions were put forward. The technical measures for increasing propylene and LPG production were introduced emphatically. In order to realize the long-term operation, green production and lower carbon emission of FCC unit, some suggestions on the next work were put forward.

Key words: catalytic cracking, flue gas turbine, propylene, slurry, sulfur oxides