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Physical Characteristics of Fluidized Beds via Pressure Fluctuation Analysis
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SYSNO ASEP 0309028 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Physical Characteristics of Fluidized Beds via Pressure Fluctuation Analysis Title Fyzikální charakteristiky fluidních vrstev cestou analýzy tlakových fluktuací Author(s) Hartman, Miloslav (UCHP-M) RID, ORCID, SAI
Trnka, Otakar (UCHP-M)Source Title AIChE Journal. - : Wiley - ISSN 0001-1541
Roč. 54, č. 7 (2008), s. 1761-1769Number of pages 9 s. Language eng - English Country US - United States Keywords gas-solid fluidization ; pressure fluctuations ; fluctuation characteristics Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects IAA400720701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z40720504 - UCHP-M (2005-2011) UT WOS 000257040300007 DOI https://doi.org/10.1002/aic Annotation During various applications of gas fluidized units, the state/quality of the fluidized bed of solids can change due to changes in operation conditions or variations in the gas or solid feed. An analysis method is developed and applied which employs spectra of the Fast Fourier Transform of measured pressure fluctuations within the fluidized bed. The procedure is based upon the spectral analysis of successive time series of pressure fluctuations reflecting the actual hydrodynamic state (regime) of the bed. Practical application of the method is illustrated for fluidization at ambient temperature and pressure of spherical particles (glass beads) as well as irregularly shaped particles (limestone, sulfated limestone, and dried sewage sludge), in an 8-cm – ID fluidized bed. Using air, experiments were conducted with different fractions of the materials spanning a very wide range of 0.28 – 4.5 mm. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2009
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