Dynamical features of the solid motion in gas–solid risers
- 作者：Satish Bhusarapu ; Miryan Cassanello ; Muthanna H. Al-Dahhan ; Milorad P. Dudukovic ; Steven Trujillo ; Timothy J. O’ ; Hern
- 关键词：Gas– ; solid risers ; Circulating fluidized beds ; Solids dynamics ; CARPT
- 刊名：International Journal of Multiphase Flow
- 出版年：2007
- 期刊代码：44_03019322
- 类别：ce
- 出版时间：February 2007
- 卷：33
- 期：2
- 页码：164-181
- 文件大小：1469 K
摘要
The trajectories of a solid tracer with the same characteristics as the circulating solids in the risers of two pilot-scale circulating fluidized beds (CFBs), obtained by the computer automated radioactive particle tracking (CARPT) technique, are examined in detail to get further insights into the complex solids dynamics of these systems. The analysis uses tools from the theory of non-linear dynamics and symbolic dynamics. Distinct features of the solids dynamics within the fast fluidization and the dilute phase transport flow regimes are highlighted and related to the operating conditions. The possibility of downflow cluster existence within the central region of the riser is particularly examined.