Modeling and Analysis of Internal Heat Integrated Distillation Columns

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Modeling and Analysis of Internal Heat Integrated Distillation Columns

Huang Kejin; Zhan Dezhi; Nakaiwa Masaru; Nakane Takashi; Takamatsu Takeichiro

^a Institute of Industrial Process Control,Zhejiang University, Hangzhou 310027, China
^b Department of Chemical Process Automation,Qingdao Institute of Chemical Engineering,
Qingdao 266043, China
^cDepartment of Chemical Systems，National Institute of Materials and Chemical Research
Tsukuba 305, Japan
^d Institute of Industrial Technology, Kansai University, Suita 564, Japan

Received:1997-11-07 Revised:1900-01-01 Online:1999-03-28 Published:1999-03-28
Contact: Huang Kejin

Modeling and Analysis of Internal Heat Integrated Distillation Columns

黄克谨^a; 战德志^b; 中岩(月劵)^c; 中根墝^c; 高松武一郎^d

^a Institute of Industrial Process Control,Zhejiang University, Hangzhou 310027, China
^b Department of Chemical Process Automation,Qingdao Institute of Chemical Engineering,
Qingdao 266043, China
^c Department of Chemical Systems，National Institute of Materials and Chemical Research
Tsukuba 305, Japan
^d Institute of Industrial Technology, Kansai University, Suita 564, Japan

通讯作者: 黄克谨

Abstract

Abstract: A generalized steady-state model is being developed for an internal heat integrated
distillation column (IHIDiC). A procedure incorporating the Newton-Raphson method is
devised for solving the model equations.Separation of an ethanol-water binary mixture is
simulated and analyzed with the model. Two pinch points are found within the process,
making the separation extremely difficult and expensive. Two sharp fronts in the
temperature and the composition profiles are being observed. With the introduction of heat
integration, satisfactory separation may be obtained in a limited number of stages with
lower reflux ratios. Increasing the pressure difference between the rectifying and the
stripping sections, however, would bring about a reduced relative volatility between the
two components involved, creating adverse separation performances. It is obvious that
optimization of the IHIDiC is of prime importance.

Key words: distillation, heat integration, energy conservation, pinch point, process modeling, static simulation

摘要： A generalized steady-state model is being developed for an internal heat integrated
distillation column (IHIDiC). A procedure incorporating the Newton-Raphson method is
devised for solving the model equations.Separation of an ethanol-water binary mixture is
simulated and analyzed with the model. Two pinch points are found within the process,
making the separation extremely difficult and expensive. Two sharp fronts in the
temperature and the composition profiles are being observed. With the introduction of heat
integration, satisfactory separation may be obtained in a limited number of stages with
lower reflux ratios. Increasing the pressure difference between the rectifying and the
stripping sections, however, would bring about a reduced relative volatility between the
two components involved, creating adverse separation performances. It is obvious that
optimization of the IHIDiC is of prime importance.

关键词: distillation;heat integration;energy conservation;pinch point;process modeling;static simulation

Huang Kejin, Zhan Dezhi, Nakaiwa Masaru, Nakane Takashi, Takamatsu Takeichiro. Modeling and Analysis of Internal Heat Integrated Distillation Columns[J]. .

黄克谨, 战德志, 中岩(月劵), 中根墝, 高松武一郎. Modeling and Analysis of Internal Heat Integrated Distillation Columns[J]. CIESC Journal.

References

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Modeling and Analysis of Internal Heat Integrated Distillation Columns

Modeling and Analysis of Internal Heat Integrated Distillation Columns

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