离子液体在FCC汽油脱硫中的应用研究

研究了新型Brnsted酸性离子液体[BMIM]HSO4与H2SO4复配体系在催化裂化（FCC）汽油烷基化脱硫中的应用，考察了温度、时间、催化剂酸性、催化剂量和二烯烃加入量等因素对FCC汽油脱硫的影响。结果表明：随着催化剂酸性增强，汽油脱硫率逐渐增大；加入少量二烯烃可明显提高FCC汽油脱硫率。在30℃、反应120min、5%复配催化剂条件下，加入适量二烯烃，可使石家庄FCC汽油硫质量浓度由608mg/L降至105mg/L，大港FCC汽油硫含量由122mg/L降至32mg/L，且辛烷值变化不大。

STUDY ON APPLICATION OF IONIC LIQUIDS AS CATALYST IN DESULFURIZATION OF FCC GASOLINE

Reducing sulfur content in FCC gasoline by using the complex of Brnsted acidic ionic liquid [BMIM]HSO4 and sulfuric acid as alkylation catalyst is introduced.The main factors for desulfurization rate of FCC gasoline such as reaction temperature，reaction time，acidity of complex catalyst，catalyst content and the amount of isoprene are studied.The results show that the desulfurization rate can be increased as the acidity of complex catalyst increases，and it may be increased obviously by adding a small amount of isoprene.Under the catalysis of 5% complex catalyst，the sulfur content of Shijiazhuang FCC gasoline can be reduced from 608mg/L to less than 105mg/L，and the content of Dagang FCC gasoline can be reduced from 122mg/L to 32mg/L by adding some isoprene at 30℃ when the reaction time is 120min，and the octan number of FCC gasoline is little changed.