Global Modeling of Heat-Integrated Distillation Column Based on Limited Local Measurements

被引:0
|
作者
Cong, Lin [1 ]
Liu, Dengpan [1 ]
Ling, Huaizhi [2 ]
机构
[1] China Univ Petr East China, Coll Control Sci & Engn, Qingdao 266580, Peoples R China
[2] China Univ Petr East China, Sch Geosci, Qingdao 266580, Peoples R China
关键词
heat-integrated distillation column; nonlinear modeling; online observer; nonlinear wave model; mass transfer mechanisms; PRESSURE-SWING DISTILLATION; DESIGN; CONFIGURATION; ENHANCEMENT; MIXTURE; STILL; PUMP;
D O I
10.3390/pr12030484
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The heat-integrated distillation column (HIDiC) has more energy-saving potential than conventional distillation columns. However, its nonlinearity and coupling effects pose significant challenges for the online operation of the HIDiC. To overcome these challenges, it becomes necessary to utilize accurate nonlinear models for design optimization or control schemes. Traditional modeling methods require extensive tray information, implying the impractical use of numerous sensors in real-world applications. This paper proposes a modeling approach for the HIDiC based on a limited number of measurements. It only requires the measurement of a finite amount of tray information to construct a global model of the HIDiC. This method serves as an online observer, providing real-time information about the entire column, and also enables the prediction of tray concentration changes. The proposed model forms the basis for developing model-based online monitoring and control schemes. Experimental simulation results demonstrate that the proposed method achieves high accuracy in global observation and prediction for the HIDiC.
引用
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页数:17
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