By adding a bypass flue to FCC CO boiler to recover surplus heat energy from the stack can meet the goal of economizing the gas and boosting medium pressure steam.

• 通过对重油催化裂化装置CO余热锅炉增设旁路烟道,回收外甩烟气的热量,达到节约瓦斯和增产中压蒸汽的目的。