Abstract: Liquid phase hydrogenation technology has high utilization rate of catalyst and hydrogen due to its high wetting rate of catalyst and small diffusion limit of reactants. By removing the high-pressure system such as hydrogen circulation process, it has advantages in energy consumption reduction and investment. SINOPEC Zhenhai Refining & Chemical Company applied jet fuel liquid phase hydrogenation technology, long period stable operation was realized by revamping the existing diesel hydrogenation unit(2.0 MM TPY) to jet fuel hydrogenation unit(2.3 MM TPY). Under the conditions of inlet pressure 4.0 MPa, reaction temperature 260~265 ℃, and liquid hourly space velocity 2.5 h^-1,the sulfur mass fraction of the refined oil was 926 μg/g, mercaptan sulfur mass fraction was less then 5 μg/g, copper corrosion, freezing point, smoke point and flash point were in line with the quality standard of No.3 jet fuel. In addition, a comparison between the liquid phase jet fuel hydrogenation technology and the traditional trickle-bed jet fuel hydrogenation technology was made. The energy consumption of liquid phase hydrogenation unit was 206.07 MJ /t, which was 35% lower than that of low pressure trickle-bed unit.

Key words: low energy consumption, jet fuel liquid phase hydrogenation unit, revamping, diesel hydrogenation unit, catalyst

摘要： 中国石油化工股份有限公司镇海炼化分公司采用航煤液相加氢技术,将原有2.0 Mt/a柴油加氢装置改造为2.3 Mt/a航煤液相加氢装置,实现了长周期稳定运行。在入口压力3.8 MPa、反应温度260~265 ℃、体积空速2.5 h^-1的条件下,精制喷气燃料硫质量分数为926 μg/g,硫醇硫质量分数小于5 μg/g,铜片腐蚀、冰点、烟点、闪点等指标均符合3号喷气燃料产品标准要求。对航煤液相加氢技术与传统滴流床航煤加氢技术进行了对比,航煤液相加氢装置的能耗仅为206.07 MJ/t,比低压滴流床装置能耗低35%。

关键词: 低能耗, 航煤液相加氢装置, 改造, 柴油加氢装置, 催化剂