Application of pseudohomogeneous and heterogeneous models in assessing the behavior of a fluidized-bed catalytic reactor
Authors:
- Katarzyna Bizon
Abstract
Comparative analysis of the steady-state and transient properties of a bubbling fluidized-bed catalytic reactor obtained according to different mathematical models of the emulsion zone was performed to verify the commonly used assumption regarding the pseudohomogeneous nature of this zone. Four different mathematical models of the fluidized-bed reactor dynamics were formulated, based on different thermal and diffusional conditions at the gas-solid interface and within the catalyst pellet, namely the model based on the assumption of pseudohomogeneous character for the emulsion zone, and a group of two-scale models accounting for the heterogeneous character of this zone. It was demonstrated that, while the pseudohomogeneous model of the emulsion zone predicts almost identical behavior of the reactor at steady-state as the proposed heterogeneous models, it may fail in the prediction of the reactor start-up behavior, especially when dealing with highly exothermic processes run at relatively high fluidization velocity.
- Record ID
- CUT8662a14fb3b54edfa1f25d24ba223649
- Publication categories
- ;
- Author
- Journal series
- Energies, ISSN , e-ISSN 1996-1073, Biweekly
- Issue year
- 2021
- Vol
- 14
- No
- 1
- Pages
- [1-22]
- Article number
- 208
- Other elements of collation
- rys.; schem.; tab.; wykr.; Bibliografia (na s.) - 20-22; Bibliografia (liczba pozycji) - 47; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 14, Iss. 1, Spec. Iss.
- Substantive notes
- Special Issue: Multiphase Flows
- Keywords in English
- fluidized bed, catalytic reactor, heterogenous model, pseudohomogeneous model, steady state, transient behavior
- DOI
- DOI:10.3390/en14010208 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1073/14/1/208 Opening in a new tab
- Related project
- Modelowanie i symulacja dynamiki wielofunkcyjnych ziaren katalizatora. . Project leader at PK: , ,
Projects financed by NSC [Projekty finansowane przez NCN] - Language
- eng (en) English
- License
- Score (nominal)
- 140
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT8662a14fb3b54edfa1f25d24ba223649/
- URN
urn:pkr-prod:CUT8662a14fb3b54edfa1f25d24ba223649
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.