考虑热力学目标的进料分流预热精馏塔分析优化

发布时间：2018-07-08 09:06

本文选题：热力学 + 固定精馏-提馏线　；参考：《化工进展》2017年05期

【摘要】：系统地提出了一种进料分流预热精馏塔的节能优化与水力学校核优化方案。基于热力学工具固定精馏线-提馏线,可定量计算精馏塔获得100%理想预热效率(精馏塔再沸器负荷的减小量与进料预热量之比)时的操作参数,并利用气液分布曲线来确定效率最低的塔板;同时,基于C++和MATLAB中的GUIDE,进一步开发了具有可视化窗口的水力学验算软件,对效率最低的塔板进行水力学分析。以石油化工行业中稳定塔(简化为正丁烷-正己烷塔)为例,热力学研究结果表明,当预热量、分流率及进料位置分别设为1000MJ/h、0.7与9/20时,稳定塔可获得100%的理想预热效率;水力学核算发现,适当设置塔板结构可保证精馏塔在正常操作下实现节能的目的。本研究对实际精馏塔节能改造具有一定的指导意义。
[Abstract]:A scheme of energy saving optimization and hydraulics check optimization for feed flow preheating distillation column is put forward systematically. Based on the thermodynamics tool, the operating parameters of 100% ideal preheating efficiency (the ratio of the reduction of the reboiler load to the feed preheating) of the distillation column can be quantitatively calculated. At the same time, based on the GUIDE in C and MATLAB, the hydraulic verification software with visual window is further developed to analyze the lowest efficiency tray. Taking the stabilizer (simplified as n-butane-n-hexane column) in petrochemical industry as an example, the thermodynamic study results show that the ideal preheating efficiency of 100% can be obtained when the preheating capacity, the distribution rate and the feed position are set to 1000MJ / h 0.7,9 / 20 respectively. It is found by hydraulic calculation that proper tray structure can ensure the energy saving of distillation column under normal operation. This research has certain guiding significance to the actual distillation column energy saving transformation.
【作者单位】：中山大学化学工程与技术学院/广东省石化过程节能工程技术研究中心;武汉科技大学化学工程与技术学院;
【基金】：国家自然科学基金项目(21276288)
【分类号】：TQ053.5

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