Abstract: Hydrodynamic Behaviors of Sand Particles In a Large-Scale Triple Bed Combined Circulating Fluidized Bed (2011 Annual Meeting)

Thursday, October 20, 2011: 1:20 PM

M100 E (Minneapolis Convention Center)

Chihiro Fushimi¹, Yu Nakamura¹, Masanori Ishizuka¹, Guoqing Guan², Atsushi Tsutsumi³, Yoshizo Suzuki⁴, Yongpan Cheng⁵ and Chi-Hwa Wang⁵, (1)Institute of Industrial Science, University of Tokyo, Tokyo, Japan, (2)North Japan Research Institute for Sustainable Energy (NJRISE), Hirosaki University, Hirosaki, Japan, (3)Institute of Industrial Science, The University of Tokyo, Tokyo, Japan, (4)Clean Gas Group, Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Ibaraki 305-8569, Japan, (5)Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore

We have developed a triple-bed combined circulating fluidized bed (TBCFB) as a gasifier for advanced integrated coal gasification combined cycle (A-IGCC) or advanced integrated coal gasification fuel cell combined cycle (A-IGFC) systems to improve of thermal efficiency of coal-fired power plants. In this study, the effect of operating conditions in a gas-sealing bed (GSB) (Ф0.15 m×5.0 m) between a riser (Ф0.1 m×16.6 m) and a bubble fluidized bed (0.75 m×0.27 m×3.4 m) on flow behaviors of silica sand solids in a large-scale TBCFB cold model were investigated in order to achieve high flux and high density solids circulation. The solids mass flux (G_s) monotonically increased with the increase in gas velocity in the GSB. Further increase in GSB gas velocity decreased G_s.

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See more of this Session: Circulating Fluidized Beds
See more of this Group/Topical: Particle Technology Forum