Analysis and Multiple Steady States of an Industrial Heterogeneous Azeotropic Distillation
Analysis and Multiple Steady States of an Industrial Heterogeneous Azeotropic Distillation
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DOI：
10.1021/ie000808s
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发表时间：
2001-06
影响因子：
4.2
通讯作者：
M. Gaubert;V. Gerbaud;X. Joulia;and Pierre Sere Peyrigain;M. Pons
中科院分区：
文献类型：
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作者：
M. Gaubert;V. Gerbaud;X. Joulia;and Pierre Sere Peyrigain;M. Pons
对工业多组分非均相共沸精馏进行了研究。该工艺涉及使用不混相夹带剂的有机酸脱水。首先，通过中试实验数据与模拟结果的对比，对MESH模型和热力学模型进行了验证。模拟中考虑了四组分混合。锅炉热负荷的案例研究是由操作路径工具自动生成的。对非均相共沸导柱和带卧螺器的工业柱进行了∞/∞分析。由于实际的限制，中试塔和工业塔没有相同的回流策略。这导致∞/∞分析可以预测工业单元的多个稳态，但不能预测导频柱。然而，通过仿真发现，无论是对先导装置还是对工业装置，都存在多个稳态。通过仿真和工业实验数据证实了多种稳定状态。
A study of an industrial multicomponent heterogeneous azeotropic distillation is presented. The process concerns an organic acid dehydration using an immiscible entrainer. First, a validation of the MESH and thermodynamic models through a comparison between pilot-plant experimental reconciled data and simulation results is conducted. A four-component mixture is considered for the simulation. Case studies of the boiler heat duty are automatically generated by an operating path tool. An ∞/∞ analysis is performed for the heterogeneous azeotropic pilot column and an industrial column with a decanter. Because of practical constraints, the pilot and the industrial columns do not have the same reflux policies. This leads the ∞/∞ analysis to predict multiple steady states for the industrial unit but not for the pilot column. However, multiple steady states are found by simulation both for the pilot and for the industrial unit. Multiple steady states are confirmed by simulation and experimental data for the indust...