超深度脱硫脱芳双区复合柴油加氢技术的开发及应用  

DEVELOPMENT AND APPLICATION OF ULTRA-DEEP DESULFURIZATION AND DEAROMATIZATION COMPOSITE DIESEL HYDROTREATING TECHNOLOGY BY DUAL REACTOR ZONE

作　　者：张锐 鞠雪艳 丁石 习远兵 陈文斌 聂红 Zhang Rui;Ju Xueyan;Ding Shi;Xi Yuanbing;Chen Wenbin;Nie Hong(SINOPEC Research Institute of Petroleum Processing Co.,Ltd.,Beijing 100083)

机构地区：[1]中石化石油化工科学研究院有限公司,北京100083

出　　处：《石油炼制与化工》2025年第4期42-49,共8页Petroleum Processing and Petrochemicals

基　　金：国家重点研发计划项目(2022YFA154401)。

摘　　要：针对氮化物影响柴油加氢超深度脱硫和多环芳烃加氢时易发生过度饱和而产生高氢耗的问题,基于固定床柴油加氢反应器轴向物料性质及反应环境变化规律,开发了超深度脱硫脱芳烃双区复合柴油加氢(RTS-Apro)技术。中型试验结果表明:装置运行初期双区反应温差为20~40℃、中后期反应温差为40℃时,可以在增强多环芳烃饱和能力的同时减少单环芳烃的饱和反应;提高氢油比有利于难脱除硫化物的深度脱除和多环芳烃的适度饱和。工业应用结果表明,以直馏柴油掺炼35%二次柴油的混合柴油为原料,在双区反应温差为20~40℃范围内,得到的精制柴油产品的硫质量分数平均仅为5μg/ g,多环芳烃质量分数平均仅为1.6%,且催化剂失活速率较低,仅为0.5℃/月(1月按30 d计),有利于催化剂长期稳定运行。In order to solve the problem that nitride affects the diesel ultra-deep desulfurization and the high hydrogen consumption caused by oversaturation during PAHs hydrotreating,based on the axial feed properties and reaction environment changes of fixed-bed diesel hydrotreating reactor,the dual-zone ultra-deep desulfurization and dearomatization composite diesel hydrotreating process(RTS-Apro)technology was developed.The results of the pilot test showed that the dearomatization of PAHs can be enhanced and the saturation of monocyclic aromatic hydrocarbons can be reduced when the temperature difference of the dual-zone reaction was 20-40℃at the beginning of the operation and the preferable temperature difference in the middle and late stages was 40℃.Increased volume ratio of hydrogen to oil is favorable to the removal of refractory sulfides and the moderate saturation of PAHs.The results of industrial application showed that the average sulfur content of refined diesel products obtained was only 5μg g,and the average mass fraction of PAHs was only 1.6%,with low catalyst inactivation rate of only 0.5℃/month(calculated as 30 days in a month),which is conducive to the long-term stable operation of the catalyst.

关 键 词：柴油加氢 超深度脱硫 芳烃饱和 RTS-Apro工艺 

分 类 号：TE6[石油与天然气工程—油气加工工程]