Please use this identifier to cite or link to this item:
|Title:||Investigation of drying geldart D and B particles in different fluidization regimes|
|Keywords:||Cross flow factor|
|Source:||Wai, K.N.,Tan, R.B.H. (2006-12). Investigation of drying geldart D and B particles in different fluidization regimes. Canadian Journal of Chemical Engineering 84 (6) : 656-662. ScholarBank@NUS Repository.|
|Abstract:||Drying of nylon (Geldart D) and expanded polystyrene (Geldart B) particles in fixed and fluidized beds were studied experimentally and theoretically. Fluidized bed dryers are sometimes operated at velocities beyond bubbling fluidization to mitigate against de-fluidization of surface wet particles. It was found that theoretical analysis using three different drying methods could predict the constant-drying rate at such velocities and also across the entire fluidization regimes (fixed bed, bubbling, slugging and turbulent fluidization) as long as the bed remains completely fluidized. Results also showed that the theoretical predictions were accurate beyond previously reported velocity limits in a laboratory scale dryer. During bubbling fluidization, the cross flow factor method was used effectively to predict the influence of bubble phase on drying rates. In the falling-rate period, it is demonstrated that the drying behaviour of nylon at different gas velocities can be characterised by a single normalized drying curve.|
|Source Title:||Canadian Journal of Chemical Engineering|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 16, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.