摘要
采用溶胶凝胶法制备镁铝铌助剂,在600℃焙烧后添加到FCC平衡剂中,在小型固定流化床反应装置上考察其降低汽油烯烃的效果。实验表明,助剂中镁铝配比为1:1的效果最好;添加铌元素后助剂的降烯烃活性增强,含铌2%的助剂降烯烃活性较镁铝助剂增强40%。对助剂的工艺条件进行了考察,得出助剂降烯烃的最佳工艺条件为:空速14.0h-1,反应温度400℃。
The additives with different ratio of Mg/Al/Nb were prepared by sol-gel, and mixed with fluid catalytic cracking catalyst after calcinated at 600℃. Their olefins-reducing effects in FCC gasoline were studied in micro reactor. Results showed that the best ratio of Mg and Al for reaction activity is 1∶1. The conversion of olefins increased 40% by adding 2% niobium. The reaction conditions were also tested and the result showed that the better reaction temperature is at 400℃ with space velocity of 14.0 h-1.
出处
《石油与天然气化工》
CAS
CSCD
北大核心
2007年第1期24-27,共4页
Chemical engineering of oil & gas
