FC-34单段高中间馏分油选择性加氢裂化催化剂的研制

摘要

FC-34催化剂是为满足国内炼化市场对清洁燃油和优质化工原料的需求而开发的新一代单段多产清洁中间馏分油和高质量尾油(可用作蒸汽裂解制乙烯原料)的加氢裂化催化剂.该催化剂以改性Y型分子筛和纳米无定形硅铝复合材料为主要酸性组分,采用DURM均匀混合技术制备,活性组分可以在催化剂中均匀分散.性能评价结果表明,FC-34加氢裂化催化剂具有裂化活性适宜、加氢性能优良、中间馏分油选择性高、开环能力强等特点,其活性和中间馏分油选择性两者的综合性能达到了FC-14催化剂的水平,尾油BMCI值得到极大改善,可以作为理想的蒸汽裂解制乙烯原料.%A new generation of single-stage hydrocracking catalyst FC-34 has been developed to meet the domestic requirement of more clean transportation fuel and high-quality chemical feedstock.This catalyst is composed of a modified Y zeolite and a type of nano-amorphous silica-alumina as the main cracking components of FC-34 catalyst.DURM (Dispersion and Uniform Reactive Manufacture),a new catalyst manufacture technique,was adopted to make the catalyst with all the active components uniformly dispersed.Through the comparison of pilot plant tests,FC-34 hydrocracking catalyst demonstrates its suitable cracking activity,good hydrogenation performance,high selectivity of middle distillates and strong ring-opening ability.The overall performance in activity and middle distillate selectivity of FC-34 has reached to that of FC-14 catalyst.In addition,the BMCI of the tail oil can be greatly improved and used as an ideal feed for steam cracking to produce ethylene.