摘要
对原油中典型的含氮化合物(喹啉和吲哚)的加氢脱氮反应进行了热力学分析,建立了非线性规划数学模型,考察了反应温度、反应压力、氢油比,化学平衡组成等因素对脱氮率的影响,并以最小消耗为目标进行了反应条件的优化。结果表明:低温、高压、高氢油比有利于脱氮反应的进行;利用该模型对柴油加氢装置工艺进行优化,在进料的含氮量为800μg/g,加氢反应过程氢油比为600(体积比),脱氮率为99%的条件下,达到相同的脱氮率,氢气的消耗相同。
The hydrodenitrification of the typical nitrogenous compound( quinoline and indole) in crude oil were analyzed thermodynamically,and the nonlinear programming( NLP) mathematical model were established,and the effects of temperature,pressure, hydrogen to oil, chemical equilibrium composition,etc on denitrification rate were investigated,and reaction conditions were optimized with the minimum exergy consumption as the aim. The results showed that lower temperature,higher pressure and higher hydrogen to oil were advantageous to the hydrodenitrogenation;the process conditions of diesel hydrogenation unit was optimized by the model,under the conditions of the feeding nitrogen800 μg/g,hydrogen to oil in the hydrogenation reaction process 600 and the nitrogen removal rate99%,the same nitrogen removal rate was achieved,and the hydrogen consumption was similar,indicating that the model had certain accuracy.
作者
李静
张桥
LI Jing;ZHANG Qiao(School of Chemical Engineering &Technology,Xi'an Jiaotong University,Xi'an 710049,China)
出处
《石化技术与应用》
CAS
2019年第1期14-17,34,共5页
Petrochemical Technology & Application
基金
国家自然科学青年基金资助项目(项目编号:21506169)
关键词
炼厂
加氢反应
脱氮反应
热力学
化学平衡组成
反应条件
refinery
hydrogenation
denitrification
thermodynamics
chemical equilibrium composition
reaction condition
