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Hydrodynamics and wet pressure drop model based on flow regimes of the novel Flow-Divided Baffle-Bridge Tray.
- Source :
-
Chemical Engineering & Processing . Jun2024, Vol. 200, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- • A novel tray, Flow-Divided Baffle-Bridge Tray was designed. • The novel tray shows good hydrodynamics in entrainment and wet pressure drop. • Three flow regimes found within the Flow-Divided Baffle-Bridge Tray's cap. • A wet tray pressure drop model based on flow regimes was developed. This study introduces the Flow-Divided Baffle-Bridge Tray (FDBBT), an innovative tray design featuring hole-bridge structures at the caps' base for pre-distribution of gas and liquid, and stepped baffles configuration at the caps' top to minimize entrainment. The pressure drop, weep and entrainment of FDBBT were evaluated in a Φ796 mm experimental setup. Compared to the sieve tray and Glitsch V-1 valve tray, FDBBT demonstrated lower pressure drops and significantly reduced entrainment, suggesting a higher operational ceiling. Furthermore, a specialized single-cap experimental apparatus was designed to assess the lifted liquid rate and uncover gas-liquid flow regimes within the cap, namely churn flow, free-surface flow, and periodic-free-surface flow. Employing data from the single-cap experiments, complemented by CFD-assisted analysis, FDBBT's pressure drop model was established and then validated by the Φ796 mm experiments, with most deviations falling within a 5 % threshold. [Display omitted] [ABSTRACT FROM AUTHOR]
- Subjects :
- *HYDRODYNAMICS
*OPEN-channel flow
*TRAYS
*LIQUEFIED gases
*ENTRAINMENT (Physics)
Subjects
Details
- Language :
- English
- ISSN :
- 02552701
- Volume :
- 200
- Database :
- Academic Search Index
- Journal :
- Chemical Engineering & Processing
- Publication Type :
- Academic Journal
- Accession number :
- 177221609
- Full Text :
- https://doi.org/10.1016/j.cep.2024.109786