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The Behavior of Counter-Current Packed Bed in the Proximity of the Flooding Point under Periodic Variations of Inlet Velocities
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SYSNO ASEP 0054915 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title The Behavior of Counter-Current Packed Bed in the Proximity of the Flooding Point under Periodic Variations of Inlet Velocities Title Chováni protiproudé náplňové kolony v blízkosti bodu zahlcení za periodických změn vstupní rychlosti Author(s) Ondráček, Jakub (UCHP-M) RID, ORCID, SAI
Stavárek, Petr (UCHP-M) RID, ORCID, SAI
Jiřičný, Vladimír (UCHP-M) RID, SAI
Staněk, Vladimír (UCHP-M) RIDSource Title Chemical and Biochemical Engineering Quarterly - ISSN 0352-9568
Roč. 20, č. 2 (2006), s. 147-155Number of pages 9 s. Language eng - English Country HR - Croatia Keywords counter-current flow ; flooding point ; axial dispersion Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects GA104/03/1558 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z40720504 - UCHP-M (2005-2011) Annotation An experimental study has been carried out of the two phase counter-current gas-liquid flow in a packed bed column operated in the proximity of the flooding point under periodic variations of inlet velocity of gas or liquid. Additional experiments have been focused on evaluating axial dispersion characteristics in the proximity of the flooding line in both liquid and gas phase using inert tracers. The transient flow experiments have revealed hysteretic behavior of liquid holdup and gas pressure in the bed. The tracer RTD experiments have shown that no deterioration of axial dispersion in both gas and liquid place takes place unless the flooding phenomenon has already prevailed. In fact, axial dispersion in the gas phase lessens with increasing gas velocity and so does axial dispersion in liquid phase at higher liquid loads. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2007
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