基于回归二元交互参数的芳烃抽提过程模拟  

Simulation of aromatic extraction process based on regressed binary interaction parameters

作　　者：王凌燕[1] 孙晓岩[1] 李忠杰[1] 项曙光[1] 

机构地区：[1]青岛科技大学炼油化工高新技术研究所,山东青岛266042

出　　处：《化工学报》2011年第12期3452-3457,共6页CIESC Journal

摘　　要：在模拟环丁砜-芳烃萃取体系时,由于存在获得准确的二元交互参数方面的困难,很难正确计算该分离过程。本文基于某厂芳烃抽提装置流程数据,首先查取该芳烃抽提料体系所涉及组分已有的相平衡数据,通过改进NRTL方程的第三参数,回归得到各组分间的二元交互参数;然后对仍缺失的二元交互参数用正规溶液理论进行估算;在此基础上建立装置中萃取塔、精馏塔等主要设备的数学模型,用序贯模块法进行计算。将计算结果与实际结果进行比较,结果显示两者平均相对误差在5%以内,表明应用的物性方法及数学模型可以准确计算芳烃抽提过程,为生产实际提供理论指导和技术支持。Because there were difficulties to obtain the accurate binary interaction parameters, it was hard to calculate the separation process correctly when sulfolane-aromatie extraction system was simulated. In this paper based on the process data of some aromatic extraction devices, the present equilibrium data of the components in the aromatic extraction system were found in the references firstly, so the binary interaction parameters between any component could be regressed and obtained. Some missing parameters were evaluated by regular solution theory. Secondly, the mathematical model of the primary equipment such as the extraction column and the rectifying column were established using the sequential modular approach to calculate the models. Compared the calculation results with the actual data, the results showed that the average relative error was below 5%, which indicates that the properties method and the mathematical models could calculate the aromatic process correctly and provide the actual production process with theoretical direction and technical support.

关 键 词：芳烃抽提 二元交互参数 NRTL 模拟 

分 类 号：TQ241[化学工程—有机化工]