Change search
ReferencesLink to record
Permanent link

Direct link
Circulating fluidized bed hydrodynamics with air staging: an experimental study
SNC Lavalin, Montreal, QE, Canada.
Umeå University, Faculty of Science and Technology, Applied Physics and Electronics.
Department of Mechanical Engineering, Dalhousie University, Halifax, NS, Canada.
Department of Mechanical and Aerospace Engineering, Carleton University, Ontario, Canada.
2004 (English)In: Powder Technology, Vol. 145, 25-33 p.Article in journal (Refereed) Published
Abstract [en]

The influence of secondary air injection (SA) on the hydrodynamics of circulating fluidized beds was studied in a 0.23-m ID riser. The secondary to primary air ratio, the vertical position, and the mode of injection (radial, tangential, and 45j entrance) are considered to be the key parameters of SA injection. It was found that the amount and location of SA have direct influence on the solids holdup and the segregation patterns in the riser. The SA divided the riser into two different flow zones: a dense turbulent zone below and a relatively dilute bed above the injection port. The mean solids velocity is found to be upwards with a greater magnitude in the center region. It is downwards with a smaller magnitude along the walls, suggesting core-annular flow structures for both above and below the SA injection region.

Place, publisher, year, edition, pages
2004. Vol. 145, 25-33 p.
Keyword [en]
Circulating fluidized beds; Secondary air injection; Particle velocity; Hydrodynamics
URN: urn:nbn:se:umu:diva-19778OAI: diva2:207368
Available from: 2009-03-11 Created: 2009-03-11

Open Access in DiVA

No full text

By organisation
Applied Physics and Electronics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 24 hits
ReferencesLink to record
Permanent link

Direct link