TY  - JOUR
AU  - Nikolić, Daliborka
AU  - Seidel, Carsten
AU  - Felischak, Matthias
AU  - Miličić, Tamara
AU  - Kienle, Achim
AU  - Seidel-Morgenstern, Andreas
AU  - Petkovska, Menka
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4813
AB  - In this two-part paper a comprehensive study of the potential to improve performance criteria of a methanol synthesis reactor through forced periodical operations is presented. The study uses the Nonlinear Frequency Response method, a powerful analytical and approximate tool which gives an answer whether and under which conditions certain periodic operation would lead to improvement of process performance. To demonstrate the method, isothermal and isobaric methanol synthesis in a lab-scale CSTR is considered. In Part I, the analysis is performed for single input modulations. Partial pressures of each reactant in the feed stream and the total inlet volumetric flow-rate are considered as possible modulated inputs. The results show that modulations of single inputs essentially do not provide potential for significant improvements. In Part II, the study will be extended to analysis of periodic operations with simultaneous modulations of two inputs and conditions offering significant performance enhancements will be identified.
PB  - Elsevier
T2  - Chemical Engineering Science
T1  - Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part I Single input modulations
VL  - 248
SP  - 117134
DO  - 10.1016/j.ces.2021.117134
ER  - 

@article{
author = "Nikolić, Daliborka and Seidel, Carsten and Felischak, Matthias and Miličić, Tamara and Kienle, Achim and Seidel-Morgenstern, Andreas and Petkovska, Menka",
year = "2022",
abstract = "In this two-part paper a comprehensive study of the potential to improve performance criteria of a methanol synthesis reactor through forced periodical operations is presented. The study uses the Nonlinear Frequency Response method, a powerful analytical and approximate tool which gives an answer whether and under which conditions certain periodic operation would lead to improvement of process performance. To demonstrate the method, isothermal and isobaric methanol synthesis in a lab-scale CSTR is considered. In Part I, the analysis is performed for single input modulations. Partial pressures of each reactant in the feed stream and the total inlet volumetric flow-rate are considered as possible modulated inputs. The results show that modulations of single inputs essentially do not provide potential for significant improvements. In Part II, the study will be extended to analysis of periodic operations with simultaneous modulations of two inputs and conditions offering significant performance enhancements will be identified.",
publisher = "Elsevier",
journal = "Chemical Engineering Science",
title = "Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part I Single input modulations",
volume = "248",
pages = "117134",
doi = "10.1016/j.ces.2021.117134"
}

Nikolić, D., Seidel, C., Felischak, M., Miličić, T., Kienle, A., Seidel-Morgenstern, A.,& Petkovska, M.. (2022). Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part I Single input modulations. in Chemical Engineering Science
Elsevier., 248, 117134.
https://doi.org/10.1016/j.ces.2021.117134

Nikolić D, Seidel C, Felischak M, Miličić T, Kienle A, Seidel-Morgenstern A, Petkovska M. Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part I Single input modulations. in Chemical Engineering Science. 2022;248:117134.
doi:10.1016/j.ces.2021.117134 .

Nikolić, Daliborka, Seidel, Carsten, Felischak, Matthias, Miličić, Tamara, Kienle, Achim, Seidel-Morgenstern, Andreas, Petkovska, Menka, "Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part I Single input modulations" in Chemical Engineering Science, 248 (2022):117134,
https://doi.org/10.1016/j.ces.2021.117134 . .

TY  - JOUR
AU  - Nikolić, Daliborka
AU  - Seidel, Carsten
AU  - Felischak, Matthias
AU  - Miličić, Tamara
AU  - Kienle, Achim
AU  - Seidel-Morgenstern, Andreas
AU  - Petkovska, Menka
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4816
AB  - The analysis of the potential to improve performance of a methanol synthesis reactor through forced periodical operations by Nonlinear Frequency Response method is presented. The methanol synthesis in an isothermal and isobaric lab-scale CSTR is considered. First, the analysis was performed for single input modulations (in Part I), which showed that significant improvements can't be achieved. Here, the study is extended to analysis of simultaneous modulations of two inputs. All possible input combinations (6 cases) are analysed and the optimal forcing parameters, maximizing the time-average methanol production, were determined. For all combinations the improvement is possible, but for some cases it is not significant. The highest improvement is predicted for simultaneous modulation of the inlet partial pressure of CO and the inlet volumetric flow rate. This case, for which it is possible to achieve up to 33.51 % of methanol production, is analysed it detail and optimized using multi-objective optimization.
PB  - Elsevier
T2  - Chemical Engineering Science
T1  - Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part II Simultaneous modulation of two inputs
VL  - 248
SP  - 117133
DO  - 10.1016/j.ces.2021.117133
ER  - 

@article{
author = "Nikolić, Daliborka and Seidel, Carsten and Felischak, Matthias and Miličić, Tamara and Kienle, Achim and Seidel-Morgenstern, Andreas and Petkovska, Menka",
year = "2022",
abstract = "The analysis of the potential to improve performance of a methanol synthesis reactor through forced periodical operations by Nonlinear Frequency Response method is presented. The methanol synthesis in an isothermal and isobaric lab-scale CSTR is considered. First, the analysis was performed for single input modulations (in Part I), which showed that significant improvements can't be achieved. Here, the study is extended to analysis of simultaneous modulations of two inputs. All possible input combinations (6 cases) are analysed and the optimal forcing parameters, maximizing the time-average methanol production, were determined. For all combinations the improvement is possible, but for some cases it is not significant. The highest improvement is predicted for simultaneous modulation of the inlet partial pressure of CO and the inlet volumetric flow rate. This case, for which it is possible to achieve up to 33.51 % of methanol production, is analysed it detail and optimized using multi-objective optimization.",
publisher = "Elsevier",
journal = "Chemical Engineering Science",
title = "Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part II Simultaneous modulation of two inputs",
volume = "248",
pages = "117133",
doi = "10.1016/j.ces.2021.117133"
}

Nikolić, D., Seidel, C., Felischak, M., Miličić, T., Kienle, A., Seidel-Morgenstern, A.,& Petkovska, M.. (2022). Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part II Simultaneous modulation of two inputs. in Chemical Engineering Science
Elsevier., 248, 117133.
https://doi.org/10.1016/j.ces.2021.117133

Nikolić D, Seidel C, Felischak M, Miličić T, Kienle A, Seidel-Morgenstern A, Petkovska M. Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part II Simultaneous modulation of two inputs. in Chemical Engineering Science. 2022;248:117133.
doi:10.1016/j.ces.2021.117133 .

Nikolić, Daliborka, Seidel, Carsten, Felischak, Matthias, Miličić, Tamara, Kienle, Achim, Seidel-Morgenstern, Andreas, Petkovska, Menka, "Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part II Simultaneous modulation of two inputs" in Chemical Engineering Science, 248 (2022):117133,
https://doi.org/10.1016/j.ces.2021.117133 . .

TY  - JOUR
AU  - Nikolić, Daliborka
AU  - Seidel, Carsten
AU  - Felischak, Matthias
AU  - Miličić, Tamara
AU  - Kienle, Achim
AU  - Seidel-Morgenstern, Andreas
AU  - Petkovska, Menka
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4819
AB  - In this two-part paper a comprehensive study of the potential to improve performance criteria of a methanol synthesis reactor through forced periodical operations is presented. The study uses the Nonlinear Frequency Response method, a powerful analytical and approximate tool which gives an answer whether and under which conditions certain periodic operation would lead to improvement of process performance. To demonstrate the method, isothermal and isobaric methanol synthesis in a lab-scale CSTR is considered. In Part I, the analysis is performed for single input modulations. Partial pressures of each reactant in the feed stream and the total inlet volumetric flow-rate are considered as possible modulated inputs. The results show that modulations of single inputs essentially do not provide potential for significant improvements. In Part II, the study will be extended to analysis of periodic operations with simultaneous modulations of two inputs and conditions offering significant performance enhancements will be identified.
PB  - Elsevier
T2  - Chemical Engineering Science
T1  - Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part I Single input modulations
VL  - 248
SP  - 117134
DO  - 10.1016/j.ces.2021.117134
ER  - 

@article{
author = "Nikolić, Daliborka and Seidel, Carsten and Felischak, Matthias and Miličić, Tamara and Kienle, Achim and Seidel-Morgenstern, Andreas and Petkovska, Menka",
year = "2022",
abstract = "In this two-part paper a comprehensive study of the potential to improve performance criteria of a methanol synthesis reactor through forced periodical operations is presented. The study uses the Nonlinear Frequency Response method, a powerful analytical and approximate tool which gives an answer whether and under which conditions certain periodic operation would lead to improvement of process performance. To demonstrate the method, isothermal and isobaric methanol synthesis in a lab-scale CSTR is considered. In Part I, the analysis is performed for single input modulations. Partial pressures of each reactant in the feed stream and the total inlet volumetric flow-rate are considered as possible modulated inputs. The results show that modulations of single inputs essentially do not provide potential for significant improvements. In Part II, the study will be extended to analysis of periodic operations with simultaneous modulations of two inputs and conditions offering significant performance enhancements will be identified.",
publisher = "Elsevier",
journal = "Chemical Engineering Science",
title = "Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part I Single input modulations",
volume = "248",
pages = "117134",
doi = "10.1016/j.ces.2021.117134"
}

Nikolić, D., Seidel, C., Felischak, M., Miličić, T., Kienle, A., Seidel-Morgenstern, A.,& Petkovska, M.. (2022). Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part I Single input modulations. in Chemical Engineering Science
Elsevier., 248, 117134.
https://doi.org/10.1016/j.ces.2021.117134

Nikolić D, Seidel C, Felischak M, Miličić T, Kienle A, Seidel-Morgenstern A, Petkovska M. Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part I Single input modulations. in Chemical Engineering Science. 2022;248:117134.
doi:10.1016/j.ces.2021.117134 .

Nikolić, Daliborka, Seidel, Carsten, Felischak, Matthias, Miličić, Tamara, Kienle, Achim, Seidel-Morgenstern, Andreas, Petkovska, Menka, "Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part I Single input modulations" in Chemical Engineering Science, 248 (2022):117134,
https://doi.org/10.1016/j.ces.2021.117134 . .

TY  - JOUR
AU  - Nikolić, Daliborka
AU  - Seidel, Carsten
AU  - Felischak, Matthias
AU  - Miličić, Tamara
AU  - Kienle, Achim
AU  - Seidel-Morgenstern, Andreas
AU  - Petkovska, Menka
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4820
AB  - The analysis of the potential to improve performance of a methanol synthesis reactor through forced periodical operations by Nonlinear Frequency Response method is presented. The methanol synthesis in an isothermal and isobaric lab-scale CSTR is considered. First, the analysis was performed for single input modulations (in Part I), which showed that significant improvements can't be achieved. Here, the study is extended to analysis of simultaneous modulations of two inputs. All possible input combinations (6 cases) are analysed and the optimal forcing parameters, maximizing the time-average methanol production, were determined. For all combinations the improvement is possible, but for some cases it is not significant. The highest improvement is predicted for simultaneous modulation of the inlet partial pressure of CO and the inlet volumetric flow rate. This case, for which it is possible to achieve up to 33.51 % of methanol production, is analysed it detail and optimized using multi-objective optimization.
PB  - Elsevier
T2  - Chemical Engineering Science
T1  - Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part II Simultaneous modulation of two inputs
VL  - 248
SP  - 117133
DO  - 10.1016/j.ces.2021.117133
ER  - 

@article{
author = "Nikolić, Daliborka and Seidel, Carsten and Felischak, Matthias and Miličić, Tamara and Kienle, Achim and Seidel-Morgenstern, Andreas and Petkovska, Menka",
year = "2022",
abstract = "The analysis of the potential to improve performance of a methanol synthesis reactor through forced periodical operations by Nonlinear Frequency Response method is presented. The methanol synthesis in an isothermal and isobaric lab-scale CSTR is considered. First, the analysis was performed for single input modulations (in Part I), which showed that significant improvements can't be achieved. Here, the study is extended to analysis of simultaneous modulations of two inputs. All possible input combinations (6 cases) are analysed and the optimal forcing parameters, maximizing the time-average methanol production, were determined. For all combinations the improvement is possible, but for some cases it is not significant. The highest improvement is predicted for simultaneous modulation of the inlet partial pressure of CO and the inlet volumetric flow rate. This case, for which it is possible to achieve up to 33.51 % of methanol production, is analysed it detail and optimized using multi-objective optimization.",
publisher = "Elsevier",
journal = "Chemical Engineering Science",
title = "Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part II Simultaneous modulation of two inputs",
volume = "248",
pages = "117133",
doi = "10.1016/j.ces.2021.117133"
}

Nikolić, D., Seidel, C., Felischak, M., Miličić, T., Kienle, A., Seidel-Morgenstern, A.,& Petkovska, M.. (2022). Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part II Simultaneous modulation of two inputs. in Chemical Engineering Science
Elsevier., 248, 117133.
https://doi.org/10.1016/j.ces.2021.117133

Nikolić D, Seidel C, Felischak M, Miličić T, Kienle A, Seidel-Morgenstern A, Petkovska M. Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part II Simultaneous modulation of two inputs. in Chemical Engineering Science. 2022;248:117133.
doi:10.1016/j.ces.2021.117133 .

Nikolić, Daliborka, Seidel, Carsten, Felischak, Matthias, Miličić, Tamara, Kienle, Achim, Seidel-Morgenstern, Andreas, Petkovska, Menka, "Forced periodic operations of a chemical reactor for methanol synthesis – The search for the best scenario based on Nonlinear Frequency Response Method. Part II Simultaneous modulation of two inputs" in Chemical Engineering Science, 248 (2022):117133,
https://doi.org/10.1016/j.ces.2021.117133 . .