Baffle effects on performance of catalytic circulating fluidized bed reactor

✍ Scribed by Peijun Jiang; Hsiaotao Bi; Rong-Her Jean; Liang-Shih Fan

• Publisher: American Institute of Chemical Engineers
• Year: 1991
• Tongue: English
• Weight: 756 KB
• Volume: 37
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690370911

✦ Synopsis

Baffle effects on the performance of a catalytic circulating fluidized bed reactor were examined experimentally. The circulating fluidized bed reactor or riser was 102 mm in diameter and 6.32 m in height. Reaction was the catalytic decomposition of ozone using FCCparticles with a mean diameter of 89 pm, impregnated with ferric oxide as catalysts. Four ring-type baffles, mounted horizontally around the riser wall, were used in this study. Ozone concentrations were measured in both axial and radial directions under various operating conditions in a riser with and without baffles. Experimental results showed that in a riser with baffles, the ozone concentration in the radial direction was more uniform and the ozone conversion was higher than that in a riser without baffles except at the lowest gas velocity used. A mathematical model developed accounted for the gas-phase ozone conversion under various operating conditions. The gas-solid contact efficiency in the riser was discussed in light of the model.