Evaluation of nonlinear frequency response method for the hydrolysis of acetic anhydride
Authors
Felischak, MatthiasNikolić, Daliborka
Petkovska, Menka
Christof, Hamel
Seidel-Morgenstern, Andreas
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The method of nonlinear frequency response (NFR) attempts to predict the outcome of perturbation for the instructive input variables using nonlinear functions within the model equations. The aim of the derived models is the estimation of optimal frequencies and amplitudes for sinusoidal changes of the total inlet flow, concentration, temperature and the cooling temperature, as well as combinations of several of these inputs. As a model reaction the hydrolysis of acetic anhydride in a continuously stirred tank reactor (CSTR) has been chosen. This exothermal reaction is investigated for the cases of separately and simultaneously modulated inlet concentrations and feed flow rates. For the experimental validation of predicted model-based results at first a verification and adjustment of the kinetic parameters is performed. Based on these results an optimal steady-state is calculated, which is used as an initial state of periodic operations. To estimate the performance of the reaction syste...m mean values of the conversion of acetic anhydride and the yield of acetic acid are compared to the corresponding steady-state values of the reactor. Different forcing frequencies, input amplitudes and, for multiple input parameter, phase shift between them are investigated. The theoretical foundation as well as systematic exploration of the experimental possibilities will be presented.
Keywords:
nonlinear frequency response / acetic anhydride / hydrolysis / continuously stirred tank reactorSource:
22nd International Congress of Chemical and Process Engineering (CHISA 2016), Prague, Czech Republic, 2016Funding / projects:
- Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45001)
- The development of efficient chemical-engineering processes based on the transport phenomena research and process intensification principles (RS-MESTD-Basic Research (BR or ON)-172022)
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IHTMTY - CONF AU - Felischak, Matthias AU - Nikolić, Daliborka AU - Petkovska, Menka AU - Christof, Hamel AU - Seidel-Morgenstern, Andreas PY - 2016 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/3845 AB - The method of nonlinear frequency response (NFR) attempts to predict the outcome of perturbation for the instructive input variables using nonlinear functions within the model equations. The aim of the derived models is the estimation of optimal frequencies and amplitudes for sinusoidal changes of the total inlet flow, concentration, temperature and the cooling temperature, as well as combinations of several of these inputs. As a model reaction the hydrolysis of acetic anhydride in a continuously stirred tank reactor (CSTR) has been chosen. This exothermal reaction is investigated for the cases of separately and simultaneously modulated inlet concentrations and feed flow rates. For the experimental validation of predicted model-based results at first a verification and adjustment of the kinetic parameters is performed. Based on these results an optimal steady-state is calculated, which is used as an initial state of periodic operations. To estimate the performance of the reaction system mean values of the conversion of acetic anhydride and the yield of acetic acid are compared to the corresponding steady-state values of the reactor. Different forcing frequencies, input amplitudes and, for multiple input parameter, phase shift between them are investigated. The theoretical foundation as well as systematic exploration of the experimental possibilities will be presented. C3 - 22nd International Congress of Chemical and Process Engineering (CHISA 2016), Prague, Czech Republic T1 - Evaluation of nonlinear frequency response method for the hydrolysis of acetic anhydride UR - https://hdl.handle.net/21.15107/rcub_cer_3845 ER -
@conference{ author = "Felischak, Matthias and Nikolić, Daliborka and Petkovska, Menka and Christof, Hamel and Seidel-Morgenstern, Andreas", year = "2016", abstract = "The method of nonlinear frequency response (NFR) attempts to predict the outcome of perturbation for the instructive input variables using nonlinear functions within the model equations. The aim of the derived models is the estimation of optimal frequencies and amplitudes for sinusoidal changes of the total inlet flow, concentration, temperature and the cooling temperature, as well as combinations of several of these inputs. As a model reaction the hydrolysis of acetic anhydride in a continuously stirred tank reactor (CSTR) has been chosen. This exothermal reaction is investigated for the cases of separately and simultaneously modulated inlet concentrations and feed flow rates. For the experimental validation of predicted model-based results at first a verification and adjustment of the kinetic parameters is performed. Based on these results an optimal steady-state is calculated, which is used as an initial state of periodic operations. To estimate the performance of the reaction system mean values of the conversion of acetic anhydride and the yield of acetic acid are compared to the corresponding steady-state values of the reactor. Different forcing frequencies, input amplitudes and, for multiple input parameter, phase shift between them are investigated. The theoretical foundation as well as systematic exploration of the experimental possibilities will be presented.", journal = "22nd International Congress of Chemical and Process Engineering (CHISA 2016), Prague, Czech Republic", title = "Evaluation of nonlinear frequency response method for the hydrolysis of acetic anhydride", url = "https://hdl.handle.net/21.15107/rcub_cer_3845" }
Felischak, M., Nikolić, D., Petkovska, M., Christof, H.,& Seidel-Morgenstern, A.. (2016). Evaluation of nonlinear frequency response method for the hydrolysis of acetic anhydride. in 22nd International Congress of Chemical and Process Engineering (CHISA 2016), Prague, Czech Republic. https://hdl.handle.net/21.15107/rcub_cer_3845
Felischak M, Nikolić D, Petkovska M, Christof H, Seidel-Morgenstern A. Evaluation of nonlinear frequency response method for the hydrolysis of acetic anhydride. in 22nd International Congress of Chemical and Process Engineering (CHISA 2016), Prague, Czech Republic. 2016;. https://hdl.handle.net/21.15107/rcub_cer_3845 .
Felischak, Matthias, Nikolić, Daliborka, Petkovska, Menka, Christof, Hamel, Seidel-Morgenstern, Andreas, "Evaluation of nonlinear frequency response method for the hydrolysis of acetic anhydride" in 22nd International Congress of Chemical and Process Engineering (CHISA 2016), Prague, Czech Republic (2016), https://hdl.handle.net/21.15107/rcub_cer_3845 .