Multiple steady states in distillation: Effect of VL(L)E inaccuracies
Multiple steady states in distillation: Effect of VL(L)E inaccuracies
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DOI：
10.1002/aic.690460510
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发表时间：
2000-05
期刊：
影响因子：
3.7
通讯作者：
N. Bekiaris;T. E. Güttinger;M. Morari
中科院分区：
文献类型：
--
作者：
N. Bekiaris;T. E. Güttinger;M. Morari
研究了非均相共沸精馏塔的输出多重性。热力学描述的准确性是决定在数值模拟中是否可以观察到多重性的关键因素。分析了多重性相关文献中的描述。Bekiaris等人（1996）的{infinity}/{infinity}分析用于检查所报道的热力学中的不准确性对共沸蒸馏中存在多重性的影响。在此基础上，指导方针是关于什么功能的热力学描述需要特别注意用于多重性预测和模拟。其次，尽可能将文献中关于非均相共沸精馏的输出多重性的数值研究与{infinity}/{infinity}预测进行了比较。使用{infinity}/{infinity}分析来推导所报告的多重性之间的关系，并确定引起它们的物理现象。
Output multiplicities in heterogeneous azeotropic distillation columns were studied. The accuracy of the thermodynamic description is a key factor that determines if multiplicities can be observed in numerical simulations. The descriptions used in the multiplicity-related literature are analyzed. The {infinity}/{infinity} analysis of Bekiaris et al. (1996) was used to check implications of inaccuracies in the reported thermodynamics on the existence of multiplicities in azeotropic distillation. On this basis, guidelines are derived concerning what features of thermodynamic descriptions need special attention for use in multiplicity prediction and simulation. secondly, numerical studies on output multiplicities in heterogeneous azeotropic distillation in the literature were compared to the {infinity}/{infinity} predictions wherever possible. The {infinity}/{infinity} analysis was used to derive the relations between the reported multiplicities and to identify the physical phenomena causing them.