On the superficial gas velocity in deep gas–solids fluidized beds

Journal Article · Tue Nov 01 00:00:00 EDT 2011 · Chemical Engineering Science

DOI:https://doi.org/10.1016/j.ces.2011.08.002· OSTI ID:1057444

Li, Tingwen; Grace, John; Shadle, Lawrence; Guenther, Chris

The superficial gas velocity is one of the key parameters used to determine the flow hydrodynamics in gas–solids fluidized beds. However, the superficial velocity varies with height in practice, and there is no consistent basis for its specification. Different approaches to determine the superficial gas velocity in a deep gas–solids system are shown to cause difficulties in developing models and in comparing predictions with experimental results. In addition, the reference conditions for superficial gas velocity are important in modeling of deep gas–solids systems where there is a considerable pressure drop.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE)
• DOE Contract Number: FE0004000
• OSTI ID: 1057444
• Report Number(s): TPR-3371
• Journal Information: Chemical Engineering Science, Vol. 66, Issue 22; ISSN 0009-2509
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
Circulating fluidized bed
Bubbling fluidized bed
Pressure drop
Superficial gas velocity
CFD
Boundary condition