High-purity control of internal thermally coupled distillation columns based on nonlinear wave model

Liu, Xinggao; Zhou, Yexiang; Cong, Lin; Ding, Feng

doi:10.1016/j.jprocont.2011.03.002

Cited by 45 publications

(39 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In ITCDIC, the same method is used and the profile function is derived 46 X j ð Þ5X r min 1 X r max 2X r min 11exp 2k r j2S 1 ð Þ ð Þ ; j51; 2; :::; f 21…”

Section: Simplified Nonlinear Wave Model Of Itcdicmentioning

confidence: 99%

“…In the previous work, 46 we derived the wave velocity by cumulatively integrating the relationships between wave velocity and the material balances in each column stage. From Figure 3, we have already known that the errors are oscillating around zero, but the amplitude and the frequency are irregular, so the cumulative integration of all stages might increase the error.…”

Section: Simplified Nonlinear Wave Model Of Itcdicmentioning

confidence: 99%

“…Also the shape of wave changes more obviously than that in a conventional distillation column, which makes the wave velocity computation more difficult. In our previous work, 46 a nonlinear wave model of ITCDIC was proposed and a generic model control strategy for ITCDIC based on the proposed model was designed, however, compositions in each tray should be measured for the estimation of wave velocity and there were many differential terms in the wave model, so some errors in the variables to be differentiated might lead to amplification of the error and hence a more simplified wave model is required.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Generalized generic model control of high‐purity internal thermally coupled distillation column based on nonlinear wave theory

et al. 2013

Self Cite

View full text Add to dashboard Cite

A new model-based control strategy for the internal thermally coupled distillation column (ITCDIC) is presented. Based on the nonlinear wave theory that describes the nonlinear dynamics in the separation processes, a simplified nonlinear wave model is established that concerns both the wave propagation and the profile shape. An advanced controller (WGGMC) is formulated by combining the nonlinear wave model with a generalized generic model control (GGMC). Compared with a conventional generic model controller based on a data-driven model (TGMC), and another wavemodel based generic model controller (WGMC) developed in our previous work, WGGMC exhibits the best performances in both servo control and regulatory control. Furthermore, WGGMC can handle a very-high-purity system of ITC-DIC with top product composition of 0.99999, while the other two controllers fail to work.

show abstract

“…In ITCDIC, the same method is used and the profile function is derived 46 X j ð Þ5X r min 1 X r max 2X r min 11exp 2k r j2S 1 ð Þ ð Þ ; j51; 2; :::; f 21…”

Section: Simplified Nonlinear Wave Model Of Itcdicmentioning

confidence: 99%

Section: Simplified Nonlinear Wave Model Of Itcdicmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Generalized generic model control of high‐purity internal thermally coupled distillation column based on nonlinear wave theory

et al. 2013

Self Cite

View full text Add to dashboard Cite

show abstract

“…Nakaiwa et al (1998) ;Schmal et al (2006); Huang et al (2007); Liu et al (2011);Bisgaard et al (2017)). Strong loop interactions have been reported.…”

Section: Introductionmentioning

confidence: 99%

Supervisory Model Predictive Control of the Heat Integrated Distillation Column

et al. 2017

View full text Add to dashboard Cite

“…Such sensitive systems would not produce constant quality which is disadvantageous from an economic point of view; moreover, inappropriate product quality requires additional separational work, thus more energy. Other works are investigating different new improvements on thermally coupled distillation systems [7,11,12,14,15,18,[27][28][29]. These topics all show the importance and actuality of saving energy, especially in such energy consuming processes like distillation.…”

Section: Introductionmentioning

confidence: 99%

Ranking of rectification structures separating quaternary mixtures with exergy analysis

Haragovics¹,

Mizsey²

2012

Per. Pol. Chem. Eng.

View full text Add to dashboard Cite

In this paper exergy analysis is applied to select the most efficient rectification structures for separation of quaternary hydrocarbon mixtures. The basis and usage of exergy analysis is shown, as well as the benefits of its application. Exergy loss and thermodynamic efficiency is calculated from basic equations of thermodynamics. The ranking, even based on exergy analysis, highly depends on the product purification prescription. Finally it is shown that heat integration of distillation columns is exergetically beneficial in a wide product purity range.Keywords exergy · distillation · quaternary mixture · thermodynamic efficiency Acknowledgement This work was supported by project OTKA Nr. 76139 as well as projects

show abstract

High-purity control of internal thermally coupled distillation columns based on nonlinear wave model

Cited by 45 publications

References 47 publications

Generalized generic model control of high‐purity internal thermally coupled distillation column based on nonlinear wave theory

Generalized generic model control of high‐purity internal thermally coupled distillation column based on nonlinear wave theory

Supervisory Model Predictive Control of the Heat Integrated Distillation Column

Ranking of rectification structures separating quaternary mixtures with exergy analysis

Contact Info

Product

Resources

About