基于催速失活的柴油中芳烃加氢失活动力学模型
Deactivation Kinetics Model for Diesel Aromatics Hydrogenation Under Accelerated Catalyst Deactivation
章晓岩 1丁石 1胡志海 1聂红1
作者信息
- 1. 中石化石油化工科学研究院有限公司,北京 100083
- 折叠
摘要
采用中型固定床加氢实验装置,以混合柴油为原料,对柴油加氢催化剂采用催速失活的方法进行处理,研究比较不同活性的柴油加氢NiMo催化剂的芳烃加氢饱和反应规律.结果表明,通过催速失活方法得到的催化剂相比新鲜剂发生了明显的失活,催化剂的活性损失随着反应时间增加、氢/油体积比减少而增加.在考虑催化剂活性损失的基础上建立三集总多环芳烃加氢饱和失活动力学模型,将计算得到的催速失活实验中活性系数与反应时间和氢/油体积比相关联,得到柴油加氢芳烃饱和活性系数模型,并通过失活动力学模型计算不同活性系数下多环芳烃含量的变化规律.
Abstract
Using mixed diesel oils as the feedstock,diesel hydrogenation catalysts were treated by the accelerated catalyst deactivation method on a medium-sized fixed bed hydrogenation experimental device.On this basis,the aromatic hydrogenation saturation reaction patterns under the action of NiMo catalyst in diesel with different activities are analyzed and compared.The results show that as compared with fresh catalysts,the catalysts obtained by the accelerated deactivation method were significantly deactivated,and the catalyst activity loss increased with the increasing reaction time and decreasing hydrogen-to-oil volume ratio.A three-lumped deactivation kinetics model for polycyclic aromatic hydrocarbons hydrosaturation was established based on the catalyst activity loss,and the calculated activation coefficients in the accelerated deactivation experiments were correlated with the reaction time and hydrogen-oil volume ratio to obtain a model of activation coefficients for diesel aromatics hydrogenation saturation.Moreover,the changes of PAHs contents under different activation coefficients were calculated by the deactivation kinetics model.
关键词
芳烃/加氢饱和/失活/动力学/柴油/活性系数Key words
aromatics/hydrogenation saturation/deactivation/kinetics/diesel/activation coefficient引用本文复制引用
基金项目
中国石油化工股份有限公司项目(121025)
出版年
2024
NETL
NSTL
万方数据