摘要
连续催化重整(简称重整)过程的流程模拟需要高效精准的模型,目前多采用先根据反应物动力学特性划分集总,建立初始模型,然后使用实验室或实际生产数据对模型进行参数估计的方法。但由于集总组分之间反应速率相差较大,模型存在较强刚性,导致模型参数估计困难,存在耗时长、收敛性差的问题。针对上述问题,提出了使用准稳态假设简化集总模型中刚性组分计算的方法,先将刚性集总模型转换为非刚性集总模型,再对该模型进行参数估计。结果表明,对于连续重整带刚性30集总模型,该方法可有效简化集总模型,在基本不降低模型计算精度的条件下,显著提升了模型参数估计效率。
The process simulations of continuous catalytic reforming needs high-efficient and accurate model.At present,the initial model is established by lumping according to the kinetic characteristics of the reactants,and the model is then estimated using laboratory or actual production data.However,because of the large difference in reaction rate between the lump components,the model has strong rigidity,which makes it difficult to estimate the parameters of the model and has the problems of time-consuming and poor convergence.In order to solve these problems,a quasi-steady-state assumption was proposed to simplify the calculation of the rigid components in the lumped model.The results show that this method can effectively simplify the lumped model for the 30 lumped model with continuous reforming band,and improve the estimation efficiency of model parameters.
作者
杨向文
陈夕松
杨卫
蒋宇
Yang Xiangwen;Chen Xisong;Yang Wei;Jiang Yu(School of Automation,Southeast University,Nanjing 210094;Nanjing Richisland Information Technology Co.,Ltd.)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2022年第7期92-98,共7页
Petroleum Processing and Petrochemicals
基金
江苏省重点研发计划项目(BE2019016)
南京江北新区重点研发计划项目(ZDYF20200127)。
关键词
连续催化重整
集总模型
准稳态假设
参数估计
continuous catalytic reforming
lumped model
quasi-steady-state assumption
parameter estimation
