Effects of the operating conditions in the mix zone on FCC naphtha olefin upgrading
油剂混合区的工艺条件对催化裂化汽油改质的影响

The factors affecting FCC naphtha olefin upgrading, such as the preheating temperature, regenerated catalyst temperature, mix temperature and catalyst to oil ratio in the mix zone were investigated in a continuous pilot riser-type FCC unit. The results showed that low regenerated catalyst temperature, low mix temperature and low catalyst to oil ratio can reduce the yield of coke and fuel gas, but impair the FCC naphtha upgrading effectiveness. The temperature of catalyst regenerated is the main factor that ...