Lateral particle size segregation in a riser under core annular flow conditions due to the Saffman lift force

Journal Article · 26 May 2016 · Powder Technology

DOI: https://doi.org/10.1016/j.powtec.2016.05.047 · OSTI ID:1477168

Breault, Ronald W.  ^[1]; Rowan, Steven L. ^[2]; Monazam, Esmail ^[3]; Stewart, Kyle T. ^[2]

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1. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
2. Oak Ridge Institute for Science and Education (ORISE), Morgantown, WV (United States)
3. REM Engineering Services, Morgantown, WV (United States)

It has been observed under certain flow conditions that there is a measured increase in fine particle concentration at the center of the circulating fluidized bed riser just below the exit to the cyclone. It is hypothesized that the Saffman force might be responsible for this phenomena. Furthermore, this research paper discusses the likelihood of the existence of “Saffman” forces, or lift due to viscous shear, in cylindrical, circulating fluidized bed (CFB) risers operating in the core annular regime.

• Research Organization: National Energy Technology Lab. (NETL), Morgantown, WV (United States)
• Sponsoring Organization: USDOE
• OSTI ID: 1477168
• Alternate ID(s): OSTI ID: 1326441
• Journal Information: Powder Technology, Vol. 299, Issue C; ISSN 0032-5910
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
Saffman force
lateral segregation
core annular