Characteristics of fluidisation behaviour in a pressurised bubbling fluidised bed. (7th August 2012)

• Record Type: Journal Article
• Authors: Li, Haoyu; Yan, Weiping; Wu, Wei; Wang, Chunbo
• Is Part Of: Canadian journal of chemical engineering. Volume 91:Number 4(2013)
• Page Start: 760
• Page End: 769
• Publication Date: 2012-08-07
• Subjects: Chemical engineering -- Periodicals; Technology -- Periodicals; 660.05
• DOI: 10.1002/cjce.21723
• Languages: English
• ISSNs: 0008-4034

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The experiments were carried out in a bench‐scale fluidised bed of 90 mm in diameter to determine the influence of pressure on fluidisation characteristics of Geldart A and B particles over the range of pressure 0.1–4.5 MPa. For Geldart B particles, the results indicate that minimum fluidisation velocity (<italic>u</italic>_mf) was found to decrease with pressure whilst bed voidage at <italic>u</italic>_mf was unaffected, and the bed expansion height increase with pressure at fixed value of gas velocity was observed for both Geldart B and A particles. For Geldart A particles, minimum bubbling velocity (<italic>u</italic>_mb) bed voidage at <italic>u</italic>_mb and dense phase voidage were found to increase obviously with pressure, but a slight influence of pressure on <italic>u</italic>_mf was observed. The prediction values of high‐pressure fluidisation characteristics from the references' correlations developed at pressure were in agreement with the experimental data. © 2012 Canadian Society for Chemical Engineering</p> </abstract>