The results showed that when the LAP is 2.6%,5.3% and 7.4% of the catalyst inventory,the volume fraction of olefins in FCC gasoline were reduced to 51.7%,47.6% and 45.2% from 58.0%,while the RON increases by 0.3,2.2 and 2.0 unit,respectively.
The light fraction, about 50% of FCC naphtha could be processed by deep etherification, resulted in olefin content of the etherified naphtha decreased by 8%-10%, and its MON and oxygen content increased by 2 units and 1.2 %-1.4% respectively.
ZnP/HZSM-5 catalyst was prepared by co-impregnation,with w(ZnO)=2% and(w(P_2O_5)=)4%. Performance of the ZnP/HZSM-5 catalyst for aromatization of FCC gasoline were studied on a small-scale fixed bed reactor using FCC naphtha(75120 ℃) as the feed.
The influence of the different distillation range of catalytic cracking naphtha,operating temperature and space velocity were investigated in fixed-micro-reaction unit for deducing olefin content in cracking naphtha and producing gasoline blend components with high octane number.
The experimental results showed that FCC gasoline was obviously reformulated under appropriate reaction conditions.
The olefins (olefins with C atom number above 4) content of FCC gasoline was markedly reduced, and the aromatics content and octane number were increased.
Furthermore, higher reaction temperature, higher mass ratio of catalyst to oil, higher mass ratio of water to oil, and lower space velocity were found to be beneficial to FCC gasoline reformulation and light olefins production.
Influence of the aging temperature of catalysts on the aromatization reaction of Lanlian FCC gasoline
The paper introduces the influence of the aging temperature of catalysts and different ratios of LBO-16 and LBO-A on the aromatization reaction of Lanlian fluid catalytic cracking (FCC) gasoline.