Abstract: Evaluation of CFB Riser and Downer Reactor Performance by Catalytic Ozone Decomposition (2009 Annual Meeting)

Monday, November 9, 2009: 4:55 PM

Governor's Chamber D (Gaylord Opryland Hotel)

Dongbing Li, Chemical and Biochemical Engineering, The University of Western Ontario, London, ON, Canada

Jesse Zhu, Chemical and Biochemical Engineering, The University of Western Ontario, London, ON, Canada

Madhumita B. Ray, Chemical and Biochemical Engineering, The University of Western Ontario, London, ON, Canada

Ajay K. Ray, Chemical and Biochemical Engineering, The University of Western Ontario, London, ON, Canada

Radial and axial ozone concentration profiles in a CFB riser (3” i.d., 10.2 m in height) and two downers (2” i.d. and 3” i.d., 5.0 m in height) were measured. Experiments were conducted under different solids circulation rates and gas superficial velocities, using fresh FCC particles impregnated with iron oxide as the solid phase and catalyst for ozone decomposition. Results show that the acceleration region gives significant contribution to the overall conversion. Also, conversions from the experiments were compared with numerical predictions.

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