摘要
在模拟环丁砜-芳烃抽提装置时,通用的流程模拟软件因为缺失大量的环丁砜与烃类的二元交互作用参数,很难准确模拟计算该分离过程。本文通过查阅文献,获取部分该芳烃抽提体系中所涉及组分的相平衡数据,对于查阅不到的数据,则通过实验室液-液相平衡试验进行测定补充。然后,通过改进NTRL和UNIQUAC方程的参数,回归得到环丁砜与各烃类间的二元交互作用参数,并通过中国石化(Sinopec)某芳烃抽提装置实际工业数据进行验证,将模拟计算结果与实际测定数据进行对比,二者平均相对误差在5%以内,表明回归得到的二元交互作用参数准确可靠,以此为基础,可以正确模拟环丁砜芳烃抽提过程。本研究内容弥补了通用流程模拟软件的不足,大幅提高了环丁砜芳烃抽提过程的模拟精度,可为芳烃抽提过程开发、设计、节能减排以及改造等提供理论指导和技术支持。
When simulating sulfolane aromatics extraction units,general-purpose process simulation software can hardly simulate and calculate the separation process precisely due to the lack of a large number of pa- rameters of the binary interaction between sulfolane and hydrocarbons.By consulting documents,the authors of this article obtained some phase equilibrium data of the components of such aromatics extraction system and complemented the data through liquid-liquid phase equilibrium experiments for unavailable data.By improving the parameters of NTRL and UNIQUAC equations and by means of regression,the authors obtained the pa- rameters of binary interaction between sulfolane and hydrocarbons and verified the parameters using actual in- dustrial data from a Sinopec aromatics extraction plant.The simulation data were compared with the actual measurements and the average relative error was within 5% ,meaning that the binary interaction parameters obtained through regression are accurate and reliable.Based on these data,the sulfolane aromatics extraction process can be accurately simulated.The research presented in this article complements the shortage of gener- al-purpose process simulation software,dramatically enhances the accuracy of simulation of the sulfolane aro- matics extract process and can provide theoretical instruction and technical support for the development,de- sign ,energy saving ,emission reduction and upgrade of the aromatics extraction process.
出处
《中外能源》
CAS
2013年第10期75-79,共5页
Sino-Global Energy
关键词
芳烃抽提
环丁砜
二元交互参数
回归
模拟
aromatics extraction
sulfolane
binary interaction parameter
regression
simulation
