Investigation of Hydrodynamics of High‐Temperature Fluidized Beds by Pressure Fluctuations
Hydrodynamics of a gas‐solid fluidized bed at elevated temperatures was investigated by analyzing pressure fluctuations in time and frequency domains. Sand particles were fluidized with air at various bed temperatures. At a constant gas velocity, the standard deviation, power spectrum density functi...
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| Autor*in: |
Nemati, Nasrin [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Rechteinformationen: |
Nutzungsrecht: Copyright © 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Chemical engineering & technology - Weinheim : Wiley-VCH, 1987, 39(2016), 8, Seite 1527-1536 |
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| Übergeordnetes Werk: |
volume:39 ; year:2016 ; number:8 ; pages:1527-1536 |
| Links: |
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| DOI / URN: |
10.1002/ceat.201500443 |
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OLC1979849463 |
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| 520 | |a Hydrodynamics of a gas‐solid fluidized bed at elevated temperatures was investigated by analyzing pressure fluctuations in time and frequency domains. Sand particles were fluidized with air at various bed temperatures. At a constant gas velocity, the standard deviation, power spectrum density function, and wide‐band energy of pressure fluctuations reach a maximum at 300 °C. Increasing the temperature to this value causes larger bubble sizes and after the bubbles reach their maximum size, they break into smaller bubbles. The Archimedes number decreases with higher temperature and the type of fluidization becomes closer to that of Geldart A boundary at this maximum temperature. Based on estimation of the drag force acting on the emulsion phase, it was concluded that 300 °C was a transition temperature at which the drag force reaches a minimum due to a significant change of interparticle and hydrodynamic forces. High‐temperature fluidized beds are widely used in chemical industries, but to date the hydrodynamic behavior of gas‐solid fluidized beds is mostly described for ambient temperature. Pressure fluctuations in a gas‐solid fluidized bed at elevated temperatures were investigated in time and frequency domains providing more reliable information on the trend of hydrodynamic changes. | ||
| 540 | |a Nutzungsrecht: Copyright © 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim | ||
| 650 | 4 | |a Pressure fluctuation | |
| 650 | 4 | |a Fluidized bed | |
| 650 | 4 | |a Hydrodynamics | |
| 650 | 4 | |a High‐temperature fluidized beds | |
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| 700 | 1 | |a Mostoufi, Navid |4 oth | |
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10.1002/ceat.201500443 doi PQ20160815 (DE-627)OLC1979849463 (DE-599)GBVOLC1979849463 (PRQ)c1373-747af34a88ccf25ba7123bbe250b9c99b82bdb2ab4d8851c42f796350664bb783 (KEY)0021869320160000039000801527investigationofhydrodynamicsofhightemperaturefluid DE-627 ger DE-627 rakwb eng 660 DE-101 58.16 bkl 58.17 bkl 58.30 bkl Nemati, Nasrin verfasserin aut Investigation of Hydrodynamics of High‐Temperature Fluidized Beds by Pressure Fluctuations 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Hydrodynamics of a gas‐solid fluidized bed at elevated temperatures was investigated by analyzing pressure fluctuations in time and frequency domains. Sand particles were fluidized with air at various bed temperatures. At a constant gas velocity, the standard deviation, power spectrum density function, and wide‐band energy of pressure fluctuations reach a maximum at 300 °C. Increasing the temperature to this value causes larger bubble sizes and after the bubbles reach their maximum size, they break into smaller bubbles. The Archimedes number decreases with higher temperature and the type of fluidization becomes closer to that of Geldart A boundary at this maximum temperature. Based on estimation of the drag force acting on the emulsion phase, it was concluded that 300 °C was a transition temperature at which the drag force reaches a minimum due to a significant change of interparticle and hydrodynamic forces. High‐temperature fluidized beds are widely used in chemical industries, but to date the hydrodynamic behavior of gas‐solid fluidized beds is mostly described for ambient temperature. Pressure fluctuations in a gas‐solid fluidized bed at elevated temperatures were investigated in time and frequency domains providing more reliable information on the trend of hydrodynamic changes. Nutzungsrecht: Copyright © 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim Pressure fluctuation Fluidized bed Hydrodynamics High‐temperature fluidized beds Zarghami, Reza oth Mostoufi, Navid oth Enthalten in Chemical engineering & technology Weinheim : Wiley-VCH, 1987 39(2016), 8, Seite 1527-1536 (DE-627)129221465 (DE-600)56471-0 (DE-576)014458179 0930-7516 nnns volume:39 year:2016 number:8 pages:1527-1536 http://dx.doi.org/10.1002/ceat.201500443 Volltext http://onlinelibrary.wiley.com/doi/10.1002/ceat.201500443/abstract GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_267 GBV_ILN_2018 58.16 AVZ 58.17 AVZ 58.30 AVZ AR 39 2016 8 1527-1536 |
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10.1002/ceat.201500443 doi PQ20160815 (DE-627)OLC1979849463 (DE-599)GBVOLC1979849463 (PRQ)c1373-747af34a88ccf25ba7123bbe250b9c99b82bdb2ab4d8851c42f796350664bb783 (KEY)0021869320160000039000801527investigationofhydrodynamicsofhightemperaturefluid DE-627 ger DE-627 rakwb eng 660 DE-101 58.16 bkl 58.17 bkl 58.30 bkl Nemati, Nasrin verfasserin aut Investigation of Hydrodynamics of High‐Temperature Fluidized Beds by Pressure Fluctuations 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Hydrodynamics of a gas‐solid fluidized bed at elevated temperatures was investigated by analyzing pressure fluctuations in time and frequency domains. Sand particles were fluidized with air at various bed temperatures. At a constant gas velocity, the standard deviation, power spectrum density function, and wide‐band energy of pressure fluctuations reach a maximum at 300 °C. Increasing the temperature to this value causes larger bubble sizes and after the bubbles reach their maximum size, they break into smaller bubbles. The Archimedes number decreases with higher temperature and the type of fluidization becomes closer to that of Geldart A boundary at this maximum temperature. Based on estimation of the drag force acting on the emulsion phase, it was concluded that 300 °C was a transition temperature at which the drag force reaches a minimum due to a significant change of interparticle and hydrodynamic forces. High‐temperature fluidized beds are widely used in chemical industries, but to date the hydrodynamic behavior of gas‐solid fluidized beds is mostly described for ambient temperature. Pressure fluctuations in a gas‐solid fluidized bed at elevated temperatures were investigated in time and frequency domains providing more reliable information on the trend of hydrodynamic changes. Nutzungsrecht: Copyright © 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim Pressure fluctuation Fluidized bed Hydrodynamics High‐temperature fluidized beds Zarghami, Reza oth Mostoufi, Navid oth Enthalten in Chemical engineering & technology Weinheim : Wiley-VCH, 1987 39(2016), 8, Seite 1527-1536 (DE-627)129221465 (DE-600)56471-0 (DE-576)014458179 0930-7516 nnns volume:39 year:2016 number:8 pages:1527-1536 http://dx.doi.org/10.1002/ceat.201500443 Volltext http://onlinelibrary.wiley.com/doi/10.1002/ceat.201500443/abstract GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_267 GBV_ILN_2018 58.16 AVZ 58.17 AVZ 58.30 AVZ AR 39 2016 8 1527-1536 |
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10.1002/ceat.201500443 doi PQ20160815 (DE-627)OLC1979849463 (DE-599)GBVOLC1979849463 (PRQ)c1373-747af34a88ccf25ba7123bbe250b9c99b82bdb2ab4d8851c42f796350664bb783 (KEY)0021869320160000039000801527investigationofhydrodynamicsofhightemperaturefluid DE-627 ger DE-627 rakwb eng 660 DE-101 58.16 bkl 58.17 bkl 58.30 bkl Nemati, Nasrin verfasserin aut Investigation of Hydrodynamics of High‐Temperature Fluidized Beds by Pressure Fluctuations 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Hydrodynamics of a gas‐solid fluidized bed at elevated temperatures was investigated by analyzing pressure fluctuations in time and frequency domains. Sand particles were fluidized with air at various bed temperatures. At a constant gas velocity, the standard deviation, power spectrum density function, and wide‐band energy of pressure fluctuations reach a maximum at 300 °C. Increasing the temperature to this value causes larger bubble sizes and after the bubbles reach their maximum size, they break into smaller bubbles. The Archimedes number decreases with higher temperature and the type of fluidization becomes closer to that of Geldart A boundary at this maximum temperature. Based on estimation of the drag force acting on the emulsion phase, it was concluded that 300 °C was a transition temperature at which the drag force reaches a minimum due to a significant change of interparticle and hydrodynamic forces. High‐temperature fluidized beds are widely used in chemical industries, but to date the hydrodynamic behavior of gas‐solid fluidized beds is mostly described for ambient temperature. Pressure fluctuations in a gas‐solid fluidized bed at elevated temperatures were investigated in time and frequency domains providing more reliable information on the trend of hydrodynamic changes. Nutzungsrecht: Copyright © 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim Pressure fluctuation Fluidized bed Hydrodynamics High‐temperature fluidized beds Zarghami, Reza oth Mostoufi, Navid oth Enthalten in Chemical engineering & technology Weinheim : Wiley-VCH, 1987 39(2016), 8, Seite 1527-1536 (DE-627)129221465 (DE-600)56471-0 (DE-576)014458179 0930-7516 nnns volume:39 year:2016 number:8 pages:1527-1536 http://dx.doi.org/10.1002/ceat.201500443 Volltext http://onlinelibrary.wiley.com/doi/10.1002/ceat.201500443/abstract GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_267 GBV_ILN_2018 58.16 AVZ 58.17 AVZ 58.30 AVZ AR 39 2016 8 1527-1536 |
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10.1002/ceat.201500443 doi PQ20160815 (DE-627)OLC1979849463 (DE-599)GBVOLC1979849463 (PRQ)c1373-747af34a88ccf25ba7123bbe250b9c99b82bdb2ab4d8851c42f796350664bb783 (KEY)0021869320160000039000801527investigationofhydrodynamicsofhightemperaturefluid DE-627 ger DE-627 rakwb eng 660 DE-101 58.16 bkl 58.17 bkl 58.30 bkl Nemati, Nasrin verfasserin aut Investigation of Hydrodynamics of High‐Temperature Fluidized Beds by Pressure Fluctuations 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Hydrodynamics of a gas‐solid fluidized bed at elevated temperatures was investigated by analyzing pressure fluctuations in time and frequency domains. Sand particles were fluidized with air at various bed temperatures. At a constant gas velocity, the standard deviation, power spectrum density function, and wide‐band energy of pressure fluctuations reach a maximum at 300 °C. Increasing the temperature to this value causes larger bubble sizes and after the bubbles reach their maximum size, they break into smaller bubbles. The Archimedes number decreases with higher temperature and the type of fluidization becomes closer to that of Geldart A boundary at this maximum temperature. Based on estimation of the drag force acting on the emulsion phase, it was concluded that 300 °C was a transition temperature at which the drag force reaches a minimum due to a significant change of interparticle and hydrodynamic forces. High‐temperature fluidized beds are widely used in chemical industries, but to date the hydrodynamic behavior of gas‐solid fluidized beds is mostly described for ambient temperature. Pressure fluctuations in a gas‐solid fluidized bed at elevated temperatures were investigated in time and frequency domains providing more reliable information on the trend of hydrodynamic changes. Nutzungsrecht: Copyright © 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim Pressure fluctuation Fluidized bed Hydrodynamics High‐temperature fluidized beds Zarghami, Reza oth Mostoufi, Navid oth Enthalten in Chemical engineering & technology Weinheim : Wiley-VCH, 1987 39(2016), 8, Seite 1527-1536 (DE-627)129221465 (DE-600)56471-0 (DE-576)014458179 0930-7516 nnns volume:39 year:2016 number:8 pages:1527-1536 http://dx.doi.org/10.1002/ceat.201500443 Volltext http://onlinelibrary.wiley.com/doi/10.1002/ceat.201500443/abstract GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_267 GBV_ILN_2018 58.16 AVZ 58.17 AVZ 58.30 AVZ AR 39 2016 8 1527-1536 |
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10.1002/ceat.201500443 doi PQ20160815 (DE-627)OLC1979849463 (DE-599)GBVOLC1979849463 (PRQ)c1373-747af34a88ccf25ba7123bbe250b9c99b82bdb2ab4d8851c42f796350664bb783 (KEY)0021869320160000039000801527investigationofhydrodynamicsofhightemperaturefluid DE-627 ger DE-627 rakwb eng 660 DE-101 58.16 bkl 58.17 bkl 58.30 bkl Nemati, Nasrin verfasserin aut Investigation of Hydrodynamics of High‐Temperature Fluidized Beds by Pressure Fluctuations 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier Hydrodynamics of a gas‐solid fluidized bed at elevated temperatures was investigated by analyzing pressure fluctuations in time and frequency domains. Sand particles were fluidized with air at various bed temperatures. At a constant gas velocity, the standard deviation, power spectrum density function, and wide‐band energy of pressure fluctuations reach a maximum at 300 °C. Increasing the temperature to this value causes larger bubble sizes and after the bubbles reach their maximum size, they break into smaller bubbles. The Archimedes number decreases with higher temperature and the type of fluidization becomes closer to that of Geldart A boundary at this maximum temperature. Based on estimation of the drag force acting on the emulsion phase, it was concluded that 300 °C was a transition temperature at which the drag force reaches a minimum due to a significant change of interparticle and hydrodynamic forces. High‐temperature fluidized beds are widely used in chemical industries, but to date the hydrodynamic behavior of gas‐solid fluidized beds is mostly described for ambient temperature. Pressure fluctuations in a gas‐solid fluidized bed at elevated temperatures were investigated in time and frequency domains providing more reliable information on the trend of hydrodynamic changes. Nutzungsrecht: Copyright © 2016 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim Pressure fluctuation Fluidized bed Hydrodynamics High‐temperature fluidized beds Zarghami, Reza oth Mostoufi, Navid oth Enthalten in Chemical engineering & technology Weinheim : Wiley-VCH, 1987 39(2016), 8, Seite 1527-1536 (DE-627)129221465 (DE-600)56471-0 (DE-576)014458179 0930-7516 nnns volume:39 year:2016 number:8 pages:1527-1536 http://dx.doi.org/10.1002/ceat.201500443 Volltext http://onlinelibrary.wiley.com/doi/10.1002/ceat.201500443/abstract GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE SSG-OLC-PHA SSG-OLC-DE-84 GBV_ILN_70 GBV_ILN_267 GBV_ILN_2018 58.16 AVZ 58.17 AVZ 58.30 AVZ AR 39 2016 8 1527-1536 |
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Hydrodynamics of a gas‐solid fluidized bed at elevated temperatures was investigated by analyzing pressure fluctuations in time and frequency domains. Sand particles were fluidized with air at various bed temperatures. At a constant gas velocity, the standard deviation, power spectrum density function, and wide‐band energy of pressure fluctuations reach a maximum at 300 °C. Increasing the temperature to this value causes larger bubble sizes and after the bubbles reach their maximum size, they break into smaller bubbles. The Archimedes number decreases with higher temperature and the type of fluidization becomes closer to that of Geldart A boundary at this maximum temperature. Based on estimation of the drag force acting on the emulsion phase, it was concluded that 300 °C was a transition temperature at which the drag force reaches a minimum due to a significant change of interparticle and hydrodynamic forces. High‐temperature fluidized beds are widely used in chemical industries, but to date the hydrodynamic behavior of gas‐solid fluidized beds is mostly described for ambient temperature. Pressure fluctuations in a gas‐solid fluidized bed at elevated temperatures were investigated in time and frequency domains providing more reliable information on the trend of hydrodynamic changes. |
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Hydrodynamics of a gas‐solid fluidized bed at elevated temperatures was investigated by analyzing pressure fluctuations in time and frequency domains. Sand particles were fluidized with air at various bed temperatures. At a constant gas velocity, the standard deviation, power spectrum density function, and wide‐band energy of pressure fluctuations reach a maximum at 300 °C. Increasing the temperature to this value causes larger bubble sizes and after the bubbles reach their maximum size, they break into smaller bubbles. The Archimedes number decreases with higher temperature and the type of fluidization becomes closer to that of Geldart A boundary at this maximum temperature. Based on estimation of the drag force acting on the emulsion phase, it was concluded that 300 °C was a transition temperature at which the drag force reaches a minimum due to a significant change of interparticle and hydrodynamic forces. High‐temperature fluidized beds are widely used in chemical industries, but to date the hydrodynamic behavior of gas‐solid fluidized beds is mostly described for ambient temperature. Pressure fluctuations in a gas‐solid fluidized bed at elevated temperatures were investigated in time and frequency domains providing more reliable information on the trend of hydrodynamic changes. |
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Hydrodynamics of a gas‐solid fluidized bed at elevated temperatures was investigated by analyzing pressure fluctuations in time and frequency domains. Sand particles were fluidized with air at various bed temperatures. At a constant gas velocity, the standard deviation, power spectrum density function, and wide‐band energy of pressure fluctuations reach a maximum at 300 °C. Increasing the temperature to this value causes larger bubble sizes and after the bubbles reach their maximum size, they break into smaller bubbles. The Archimedes number decreases with higher temperature and the type of fluidization becomes closer to that of Geldart A boundary at this maximum temperature. Based on estimation of the drag force acting on the emulsion phase, it was concluded that 300 °C was a transition temperature at which the drag force reaches a minimum due to a significant change of interparticle and hydrodynamic forces. High‐temperature fluidized beds are widely used in chemical industries, but to date the hydrodynamic behavior of gas‐solid fluidized beds is mostly described for ambient temperature. Pressure fluctuations in a gas‐solid fluidized bed at elevated temperatures were investigated in time and frequency domains providing more reliable information on the trend of hydrodynamic changes. |
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Investigation of Hydrodynamics of High‐Temperature Fluidized Beds by Pressure Fluctuations |
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