热转化及临氢热转化条件下减压渣油氮分布的研究  

Research on nitrogen distribution in thermal conversion and hydrothermal conversion

作　　者：文萍[1] 刘善成 岳岩君 袁存昱[3] WEN Ping;LIU Shan-cheng;YUE Yan-jun;YUAN Cun-yu(College of Chemical Engineering,University of Petroleum(Huadong),Qingdao 266580,China;Shandong Faentai Technology Engineering Co.,Ltd.,Qingdao 266580,China;Sinopec Shengli Oilfield Petrochemical Plant,Dongying 257000,China)

机构地区：[1]中国石油大学(华东)化学工程学院,山东青岛266580 [2]山东法恩泰科技工程有限公司,山东青岛266580 [3]中国石化胜利油田石油化工总厂,山东东营257000

出　　处：《化学工程师》2022年第6期60-64,共5页Chemical Engineer

摘　　要：以克炼减压渣油为原料,分别进行热转化、临氢热转化反应,对反应产物进行常减压蒸馏,汽油馏分(低于180℃)、常压柴油(180~260℃)、减压柴油(260~360℃)、蜡油馏分(360~500℃)和高于500℃渣油。测定馏分油和尾油中的总氮、碱氮,研究热转化、临氢热转化条件下氮分布随反应温度、反应时间的变化规律。研究表明,临氢热转化和热转化产物氮分布的相同之处是馏分油越轻,碱性氮所占的比重越大。随着馏分的变重,碱性氮占总氮的比例减小。临氢热转化和热转化产品组成类似,既发生裂化反应又发生缩合反应。渣油临氢热转化过程实质是临氢下的热反应。临氢热转化过程,由于H;的存在有助于含氮化合物的裂化转化。The vacuum residue from Kalamayi Refinery was subjected to thermal conversion and hydrothermal conversion respectively in a batch autocalve. The reaction products were distilled into gasoline fraction(<180℃),atmospheric diesel oil(180~260℃), vacuum diesel oil(260~360℃), wax oil fraction(360~500℃) and residual oil(>500℃). The total nitrogen and basic nitrogen in each fraction were determined. The variation of nitrogen distribution with reaction temperature, and reaction time under thermal transformation and hydrothermal conversion were studied. The results showed that both in thermal conversion and hydrothermal conversion, the lighter the distillate is, the greater the proportion of basic nitrogen is.The ratio of basic nitrogen to total nitrogen decreased with increasing fraction weight. Both cracking reaction and condensation reaction occured in hydrogen thermal conversion and thermal conversion, and the product composition is similar. In the process of hydrogen thermal conversion, the presence of hydrogen contributes to the cracking and conversion of nitrogenous compounds.

关 键 词：临氢热转化 热转化 减压渣油 氮分布 

分 类 号：TE624.3[石油与天然气工程—油气加工工程]