ME-1汽油加氢脱硫催化剂及其工业应用

STUDY AND COMMERCIAL APPLICATION OF FCC NAPHTHA HYDRODESULFURIZATION CATALYST ME-1

采用高分辨透射电镜（TEM）对工业FCC汽油选择性加氢脱硫MoCo/Al2O3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。

ME-1hydrodesulfurization 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/Al2O3for selective desulfurization 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 MoS2particles of ME-1catalyst are 3.0—6.0and that of the reference catalyst are 5.0—10.0,which indicates the higher dispersion of active component of ME-1catalyst than the compared one.The HDS evaluation results show that when the sulfur content reaches 10μg/g in the product,the reaction temperature of ME-1catalyst 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-1catalyst has a higher HDS activity and selectivity.The commercial application results of ME-1catalyst show that the sulfur content of FCC naphtha can be reduced from 466μg/g to 9.7μg/g with RON loss of 1.75, indicating that ME-1catalyst can meet the need for production of ＂sulfur-free gasoline＂ with less octane number loss.