上行式双区复合液相柴油加氢技术的开发及应用  

DEVELOPMENT AND APPLICATION OF CONTINUOUS LIQUID PHASE DIESEL HYDROTREATING TECHNOLOGY BY DUAL REACTOR ZONE

作　　者：张锐 丁石 习远兵 徐凯 陈文斌 聂红 Zhang Rui;Ding Shi;Xi Yuanbing;Xu Kai;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》2024年第8期18-25,共8页Petroleum Processing and Petrochemicals

基　　金：国家重点研发计划项目(2022YFA1504401)。

摘　　要：通过分析发现影响液相柴油加氢技术超深度脱硫效果的主要原因是油品中溶解有反应副产物硫化氢。以真实油品模拟计算了硫化氢在柴油中的溶解规律和分布情况,发现补入少量的氢气就可以实现液相工艺进行超深度加氢脱硫,由此开发了上行式双区复合液相柴油加氢技术(SLHT Dr)。中型试验结果表明,在设置的第二反应区中按照氢油体积比为30~50补入氢气,就能够克服加氢过程中硫化氢对深度脱硫反应的抑制作用,可在缓和的工艺条件下(反应温度305℃、体积空速6.0 h^(-1))获得硫质量分数小于10μg/g的精制柴油。SLHT Dr工业应用结果表明,装置能耗比同类技术降低11.9%,实现了低能耗生产,减少了生产环节的碳排放,可为未来柴油质量进一步升级及减少碳排放提供技术支撑。Through analysis,it was found that the main factor affecting the ultra-deep desulfurization of liquid phase diesel hydrogenation technology was the hydrogen sulfide,a by-product dissolved in the oil.The dissolution law and distribution of hydrogen sulfide in diesel oil were simulated by real oil products,it was found that adding a small amount of hydrogen was effective for ultra-deep desulfurization in liquid phase technology.A continuous liquid phase diesel hydrotreating technology by dual reactor zone(SLHT Dr)was developed.The results of the medium scale test showed that the inhibition of hydrogen sulfide on the deep desulfurization could be overcome by adding hydrogen in the second reaction zone according to the volume ratio of hydrogen and oil of 30-50.The diesel oil with sulfur mass fraction less than 10μg/g could be obtained under mild process conditions(a reaction temperature of 305℃,a volume space velocity of 6.0 h^(-1)).The industrial application results of SLHT Dr showed that the energy consumption of the unit was 11.9%lower than that of the same kind technologies,the low energy consumption production was realized,and the carbon emissions of the production process was reduced.It provides technical support for further upgrading of diesel quality and reducing carbon emissions in the future.

关 键 词：柴油 液相加氢 硫化氢 能耗 碳排放 

分 类 号：TE624.5[石油与天然气工程—油气加工工程]