重整预加氢催化剂评价及工业应用

摘要

介绍了中国石油石油化工研究院大庆化工研究中心研制的重整预加氢催化剂的实验室评价情况,以及在中国石油独山子石化分公司500 kta连续重整装置上的工业应用情况.实验室评价结果表明,以硫质量分数为175 μg/g、氮质量分数为1.31μg/g的重石脑油为原料,在反应温度265 ℃、反应压力2.0 Mpa、氢油体积比110、体积空速4.44 h-1的条件下,预加氢生成油的硫、氮质量分数均小于0.5 μg/g.工业应用结果表明,该预加氢催化剂的加氢活性较高,反应器压降较小,预加氢精制油的性质满足重整反应器进料的要求.%A pre-hydrotreating catalyst, developed by Daqing Petrochemical Research Center of PetroChina Petrochemical Institute, was evaluated in laboratory and applied in a 500 kt/a continuous reforming unit in Dushanzi Petrochemical Company.The results in lab show that the sulfur and nitrogen contents of the treated oil both are reduced to less than 0.5 μg/g from the 175 μg/g and 1.31 μg/g in feed, respectively at conditions of 265 ℃, 2.0 MPa, H2/oil volume ratio of 110 and LHSV of 4.44 h-1, better than reference catalyst.The results of nearly one year industrial application exhibit that the pre-hydrotreating catalyst has a higher activity for desulfurization and denitrogenation, and a lower pressure drop.The properties of pre-hydrotreated oil meet the feed requirements for reforming reactor.