Gas hold-up analysis in an unsteady stirred vessel by means of infinite series
The use of a liquid level sensor made it possible to measure changes in gas hold-up over time in a stirred tank during unsteady mixing. These results were subjected to Fourier time series analysis and a model of gas hold-up changes in time was proposed. It allowed one to determine the model value of...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Sciendo
2023-06-01
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| Series: | Polish Journal of Chemical Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/pjct-2023-0014 |
| _version_ | 1797788936538423296 |
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| author | Frankiewicz Sebastian S. Woziwodzki Szymon |
| author_facet | Frankiewicz Sebastian S. Woziwodzki Szymon |
| author_sort | Frankiewicz Sebastian S. |
| collection | DOAJ |
| description | The use of a liquid level sensor made it possible to measure changes in gas hold-up over time in a stirred tank during unsteady mixing. These results were subjected to Fourier time series analysis and a model of gas hold-up changes in time was proposed. It allowed one to determine the model value of gas hold-up, which can be useful for characterizing gas hold-up during unsteady mixing and as a comparison to gas hold-up during steady mixing. The characteristic frequency was also determined, which corresponds to about twice the oscillation frequency. Model gas hold-up values for coalescing and non-coalescing systems were compared. Moreover, the change of the gas hold-up at constant maximum stirrer rotation frequency and variable gas flow rate for different oscillation frequencies was investigated. |
| first_indexed | 2024-03-13T01:43:38Z |
| format | Article |
| id | doaj.art-48eb1f76bc594247a7f7387f15d26f02 |
| institution | Directory Open Access Journal |
| issn | 1899-4741 |
| language | English |
| last_indexed | 2024-03-13T01:43:38Z |
| publishDate | 2023-06-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Polish Journal of Chemical Technology |
| spelling | doaj.art-48eb1f76bc594247a7f7387f15d26f022023-07-03T10:21:46ZengSciendoPolish Journal of Chemical Technology1899-47412023-06-01252303510.2478/pjct-2023-0014Gas hold-up analysis in an unsteady stirred vessel by means of infinite seriesFrankiewicz Sebastian S.0Woziwodzki Szymon11Poznan University of Technology, Department of Chemical Engineering and Equipment, 4 Berdychowo street, 60-965Poznan1Poznan University of Technology, Department of Chemical Engineering and Equipment, 4 Berdychowo street, 60-965PoznanThe use of a liquid level sensor made it possible to measure changes in gas hold-up over time in a stirred tank during unsteady mixing. These results were subjected to Fourier time series analysis and a model of gas hold-up changes in time was proposed. It allowed one to determine the model value of gas hold-up, which can be useful for characterizing gas hold-up during unsteady mixing and as a comparison to gas hold-up during steady mixing. The characteristic frequency was also determined, which corresponds to about twice the oscillation frequency. Model gas hold-up values for coalescing and non-coalescing systems were compared. Moreover, the change of the gas hold-up at constant maximum stirrer rotation frequency and variable gas flow rate for different oscillation frequencies was investigated.https://doi.org/10.2478/pjct-2023-0014unsteady mixinggas hold-upnon-coalescing systemstirred vessel |
| spellingShingle | Frankiewicz Sebastian S. Woziwodzki Szymon Gas hold-up analysis in an unsteady stirred vessel by means of infinite series Polish Journal of Chemical Technology unsteady mixing gas hold-up non-coalescing system stirred vessel |
| title | Gas hold-up analysis in an unsteady stirred vessel by means of infinite series |
| title_full | Gas hold-up analysis in an unsteady stirred vessel by means of infinite series |
| title_fullStr | Gas hold-up analysis in an unsteady stirred vessel by means of infinite series |
| title_full_unstemmed | Gas hold-up analysis in an unsteady stirred vessel by means of infinite series |
| title_short | Gas hold-up analysis in an unsteady stirred vessel by means of infinite series |
| title_sort | gas hold up analysis in an unsteady stirred vessel by means of infinite series |
| topic | unsteady mixing gas hold-up non-coalescing system stirred vessel |
| url | https://doi.org/10.2478/pjct-2023-0014 |
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