No.8（2013）9.Commercial production of noble-metal-free Co, Ce oxide catalytst and energy saving odor elimination system

Shouichi Somekawa, Jun Inoue, Atsushi Mizukoshi, Toshiya Hagiwara, Kyoko Hujii, Masayuki Kojima, Tsutomu Shinoda

  A noble-metal-free catalyst was developed using Co, Ce oxide for odor control. The catalyst has some merits, for example tar and ethyl acetate can be decomposed totally at a lower temperature than using a commercial Pt catalyst. In practical applications with extremely high gas flow rates, coating the catalyst on a honeycomb-type or pellet-type ceramic is essential because this lowers the pressure drop prevalent in large-scale reactors. In this study, a porous Co, Ce oxide catalyst was coated on a honey comb-type ceramic, and the results show increased performance. Manufacturing of the Co, Ce catalysts and cost reduction of the odor control system (52% down of energy saving, 25% down from the initial cost) were achieved. Field tests were carried out using the Co, Ce catalysts in painting and printing factories, and the like. The performance of odor cleaning in the field was confirmed by the test using the honeycomb-type Co, Ce oxide catalysts.

Keywords
Metal oxides catalysts, Odor control, Energy-saving, Manufacturing, Printing dryer with odor control unit

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