文献类型：期刊文献

中文题名：重整汽油分离C_(8)、C_(9)芳烃的稳态和动态模拟

英文题名：STEADY-STATE AND DYNAMIC CONTROL SIMULATION OF C_(8)AND C_(9)AROMATIC HYDROCARBONS SEPARATION FROM REFORMATE GASOLINE

作者：潘蓉[1]

机构：[1]华东理工大学工程创新实践中心,上海200237

年份：2025

卷号：56

期号：7

起止页码：136

中文期刊名：石油炼制与化工

外文期刊名：Petroleum Processing and Petrochemicals

收录：;北大核心:【北大核心2023】；

语种：中文

中文关键词：芳烃分离;侧线精馏;动态控制

外文关键词：aromatic hydrocarbon separation;side line distillation;dynamic control

摘要：针对C_(8)、C_(9)芳烃精馏装置改造项目,分别利用常规两塔流程和带侧线的精馏塔流程进行模拟设计,并采用非支配排序遗传算法对流程进行优化。首先,对常规两塔流程的脱C_(8)塔和脱C_(9)塔进行了模拟,C_(8)和C_(9)产品的纯度(w)指标要求分别为0.98和0.9999时,计算得到常规两塔流程再沸器的总热负荷为33.52 MW。然后,对常规两塔流程进行了优化,优化后的两塔再沸器总热负荷为23.40 MW。进一步,分别搭建了单侧线采出流程和双侧线采出流程,并对精馏塔稳态结构进行了优化。结果发现,在满足纯度要求的前提下,采用单侧线和双侧线精馏流程的再沸器总热负荷均显著降低,分别降低到21.86 MW和21.55 MW。最后,优选结构可控性更好的单侧线流程,分别进行了温度动态控制结构和温度-侧线流量比例动态控制结构模拟。结果表明,温度控制结构和温度-侧线比例控制结构均可以有效应对进料流量±10%扰动和进料组成(w)±5%扰动的动态控制,而温度-侧线比例控制结构的稳态偏差更小。
For the renovation project of C_(8)and C_(9)aromatic hydrocarbon distillation units,simulation design was carried out using conventional two tower process and distillation tower process with side lines,and non dominated sorting genetic algorithm was used to optimize the process.Firstly,simulations were conducted on the conventional two tower process for the C_(8)and C_(9)removal towers.When the purity(w)indicators of C_(8)and C_(9)products were required to be 0.98 and 0.9999,respectively,the total heat load of the conventional two tower process reboiler was calculated to be 33.52 MW.Then,the conventional two tower process was optimized,and the total heat load of the optimized two tower reboiler was 23.40 MW.Furthermore,a single-sided line extraction process and a double-sided line extraction process were constructed separately,and the steady-state structure of the distillation tower was optimized.It was found that,while meeting the purity requirements,the total heat load of the reboiler using both single-sided and double-sided distillation processes was significantly reduced,to 21.86 MW and 21.55 MW,respectively.Finally,the single-sided process with better structural controllability was selected,and simulations were conducted for temperature dynamic control structure and temperature side flow ratio dynamic control structure.The results showed that both the temperature control structure and the temperature side line proportional control structure can effectively cope with dynamic control of feed flow rate±10%disturbance and feed composition(w)±5%disturbance,while the steady-state deviation of the temperature side line proportional control structure was smaller.