Analysis of forced periodic operations of non-isothermal CSTR with modulation of inlet concentration and temperature
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
One way to achieve process intensification is to operate the process in a periodic way, in order to obtain better average performance compared to the optimal steady-state operation. The source of the possible improvement lies in the process nonlinearity. Nevertheless, the improvement is obtained only in some cases, while in some others the periodic operation can be unfavourable.
Testing whether a potential periodic process is favourable or unfavourable generally demands long and tedious experimental and/or numerical work. In our previous work, we have established a method, based on nonlinear frequency response analysis, which gives an approximate value of the average process performance directly, without numerical simulation. In this work, this method is applied for analysis of periodic operations of a non-isothermal CSTR, for the cases of simultaneous periodic modulations of the inlet concentration and inlet temperature and inlet concentration and temperature of the cooling media.
...Since the concept of higher-order frequency response functions can be applied only for stable systems, the dynamic stability analysis was performed first, resulting with pre-conditions for application of the frequency response method. Conditions for possible improvements through periodic operation of the non-isothermal reactor have also been established.
Numerical analysis was performed for the reaction of decomposition of hydrogen peroxide in the presence of Fe3+-ions in acidic solution. The results of the nonlinear frequency response method were compared with the results of numerical solution, and good agreement was obtained.
Кључне речи:
periodic operation / nonlinear frequency response analysis / numerical solutionsИзвор:
8th European Congress of Chemical Engineering (ECCE 2011), Berlin, Germany, 2011Финансирање / пројекти:
- Наноструктурни функционални и композитни материјали у каталитичким и сорпционим процесима (RS-45001)
- Развој ефикаснијих хемијско-инжењерских процеса заснован на истраживањима феномена преноса и принципима интензификације процеса (RS-172022)
Институција/група
IHTMTY - CONF AU - Nikolić-Paunić, Daliborka AU - Seidel-Morgenstern, Andreas AU - Petkovska, Menka PY - 2011 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/3802 AB - One way to achieve process intensification is to operate the process in a periodic way, in order to obtain better average performance compared to the optimal steady-state operation. The source of the possible improvement lies in the process nonlinearity. Nevertheless, the improvement is obtained only in some cases, while in some others the periodic operation can be unfavourable. Testing whether a potential periodic process is favourable or unfavourable generally demands long and tedious experimental and/or numerical work. In our previous work, we have established a method, based on nonlinear frequency response analysis, which gives an approximate value of the average process performance directly, without numerical simulation. In this work, this method is applied for analysis of periodic operations of a non-isothermal CSTR, for the cases of simultaneous periodic modulations of the inlet concentration and inlet temperature and inlet concentration and temperature of the cooling media. Since the concept of higher-order frequency response functions can be applied only for stable systems, the dynamic stability analysis was performed first, resulting with pre-conditions for application of the frequency response method. Conditions for possible improvements through periodic operation of the non-isothermal reactor have also been established. Numerical analysis was performed for the reaction of decomposition of hydrogen peroxide in the presence of Fe3+-ions in acidic solution. The results of the nonlinear frequency response method were compared with the results of numerical solution, and good agreement was obtained. C3 - 8th European Congress of Chemical Engineering (ECCE 2011), Berlin, Germany T1 - Analysis of forced periodic operations of non-isothermal CSTR with modulation of inlet concentration and temperature UR - https://hdl.handle.net/21.15107/rcub_cer_3802 ER -
@conference{ author = "Nikolić-Paunić, Daliborka and Seidel-Morgenstern, Andreas and Petkovska, Menka", year = "2011", abstract = "One way to achieve process intensification is to operate the process in a periodic way, in order to obtain better average performance compared to the optimal steady-state operation. The source of the possible improvement lies in the process nonlinearity. Nevertheless, the improvement is obtained only in some cases, while in some others the periodic operation can be unfavourable. Testing whether a potential periodic process is favourable or unfavourable generally demands long and tedious experimental and/or numerical work. In our previous work, we have established a method, based on nonlinear frequency response analysis, which gives an approximate value of the average process performance directly, without numerical simulation. In this work, this method is applied for analysis of periodic operations of a non-isothermal CSTR, for the cases of simultaneous periodic modulations of the inlet concentration and inlet temperature and inlet concentration and temperature of the cooling media. Since the concept of higher-order frequency response functions can be applied only for stable systems, the dynamic stability analysis was performed first, resulting with pre-conditions for application of the frequency response method. Conditions for possible improvements through periodic operation of the non-isothermal reactor have also been established. Numerical analysis was performed for the reaction of decomposition of hydrogen peroxide in the presence of Fe3+-ions in acidic solution. The results of the nonlinear frequency response method were compared with the results of numerical solution, and good agreement was obtained.", journal = "8th European Congress of Chemical Engineering (ECCE 2011), Berlin, Germany", title = "Analysis of forced periodic operations of non-isothermal CSTR with modulation of inlet concentration and temperature", url = "https://hdl.handle.net/21.15107/rcub_cer_3802" }
Nikolić-Paunić, D., Seidel-Morgenstern, A.,& Petkovska, M.. (2011). Analysis of forced periodic operations of non-isothermal CSTR with modulation of inlet concentration and temperature. in 8th European Congress of Chemical Engineering (ECCE 2011), Berlin, Germany. https://hdl.handle.net/21.15107/rcub_cer_3802
Nikolić-Paunić D, Seidel-Morgenstern A, Petkovska M. Analysis of forced periodic operations of non-isothermal CSTR with modulation of inlet concentration and temperature. in 8th European Congress of Chemical Engineering (ECCE 2011), Berlin, Germany. 2011;. https://hdl.handle.net/21.15107/rcub_cer_3802 .
Nikolić-Paunić, Daliborka, Seidel-Morgenstern, Andreas, Petkovska, Menka, "Analysis of forced periodic operations of non-isothermal CSTR with modulation of inlet concentration and temperature" in 8th European Congress of Chemical Engineering (ECCE 2011), Berlin, Germany (2011), https://hdl.handle.net/21.15107/rcub_cer_3802 .