催化裂化回炼油加氢精制反应规律研究  

STUDY ON THE VARIATIONS OF HYDROTREATING REACTIONS FOR FCC RECYCLE OIL

作　　者：张奎[1] 刘涛[1] 戴立顺[1] 聂红[1] 

机构地区：[1]中国石化石油化工科学研究院,北京100083

出　　处：《石油炼制与化工》2012年第9期5-9,共5页Petroleum Processing and Petrochemicals

摘　　要：通过考察工艺条件对催化裂化回炼油加氢精制反应的影响,得到加氢精制油中不同烃类以及S、N质量分数随工艺条件的变化规律。结果表明:链烷烃及环烷烃质量分数随工艺条件变化不明显;增加氢油体积比、反应时间、氢分压均可促进HDA,HDS,HDN反应的进行,但当超过最佳氢油体积比时,继续增加氢油体积比,HDA,HDS,HDN反应效果基本保持不变;提高反应温度有利于HDS反应的进行,而由于热力学平衡限制,HDA、HDN反应均存在一个最佳反应温度,且HDN反应的最佳反应温度较HDA反应高;在相同加氢精制条件下,不同结构的多环芳烃有不同的加氢饱和活性,迫位缩合型多环芳烃较渺位缩合型多环芳烃难加氢。Through investigating the influence of various process parameters on the hydrotreating reactions of FCC recycle oil,the variations of various types of hydrocarbons,S and N contents in hydrotreated recycle oil with process parameters were obtained.Results showed that the mass fraction of paraffin and naphthenic hydrocarbons changed a little with reaction conditions.With the increase of H2/oil ratio,reaction time and hydrogen partial pressure,the reactions of HDA,HDS and HDN were benefited,yet when the H2/oil ratio was over an optimal value,the effect was little.The increase of reaction temperature benefited the proceeding of HDS reactions;due to the limit of thermodynamic equilibrium for HDA and HDN reactions,there was an optimum reaction temperature for each respectively,and the temperature of the latter was higher than that of the former.Under the same hydrotreating conditions,polycyclic aromatic hydrocarbons having various structures exhibited various hydro-saturation activities,e.g.the hydrogenation of peri-condensed polyaromatic hydrocarbon was more difficult than that of cata-condensed polyaromatic hydrocarbon.

关 键 词：芳烃 加氢精制 回炼油 变化规律 

分 类 号：TE624.431[石油与天然气工程—油气加工工程]