ME-1汽油加氢脱硫催化剂及其工业应用

摘要

ME-1 hydrodesulfurization catalyst newly developed by FRIPP was sulfided and the MoS2 phase morphology of the sulfided catalyst was characterized by higher resolution transmission electron microscopy (TEM)and compared with a commercial reference catalyst MoCo∕Al2 O3 for selective desul-furization of FCC naphtha.Their HDS activities and selectivities were evaluated by heavy gasoline HDS test.The TEM results show that the numbers of stacking layers of MoS2 particles of ME-1 catalyst are 3.0-6.0 and that of the reference catalyst are 5. 0-10.0,which indicates the higher dispersion of ac-tive component of ME-1 catalyst than the compared one.The HDS evaluation results show that when the sulfur content reaches 10 μg∕g in the product,the reaction temperature of ME-1 catalyst is 10 ℃lower than the reference catalyst,and the olefin saturated rate is reduced by 32.2%,the research octane number (RON)loss of the product is reduced by 1.6.The evaluation tests demonstrate that the ME-1 catalyst has a higher HDS activity and selectivity.The commercial application results of ME-1 catalyst show that the sulfur content of FCC naphtha can be reduced from 466 μg∕g to 9.7 μg∕g with RON loss of 1.75 ,indicating that ME-1 catalyst can meet the need for production of"sulfur-free gasoline"with less octane number loss.%采用高分辨透射电镜（TEM）对工业FCC汽油选择性加氢脱硫 MoCo∕Al2 O3催化剂（参比剂）与中国石化抚顺石油化工研究院（FRIPP）开发的 ME-1催化剂进行了硫化态催化剂的 MoS2相形貌表征。结果表明：ME-1催化剂活性中心 MoS2垛层数为3•0～6•0，而参比剂MoS2垛层数为5•0～10•0，表明ME-1催化剂中活性金属组分的分散度较高。重汽油加氢脱硫活性与选择性小型评价结果表明，加氢脱硫产物达到硫质量分数小于10μg∕g时，ME-1催化剂所需反应温度比参比剂低10℃，烯烃饱和率减少32•2％，RON 损失减少1•6个单位，具有更高的加氢脱硫活性和选择性。ME-1催化剂的工业应用结果表明，将 FCC 汽油硫质量分数由466μg∕g降至9•7μg∕g时，RON损失1•75个单位，表明 ME-1催化剂可满足生产“无硫汽油”的需要。