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Selective catalytic reduction by urea in a fluidized-bed reactor

✍ Scribed by Seon Ah Roh; Soon Hwa Jung; Sang Mun Jeong; Sang Done Kim

Publisher
Wiley (John Wiley & Sons)
Year
2003
Tongue
English
Weight
159 KB
Volume
78
Category
Article
ISSN
0268-2575

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✦ Synopsis

Abstract

The selective catalytic reduction (SCR) of NO~x~ by urea as a reducing agent was carried out over fresh and sulfated CuO/γ‐Al~2~O~3~ catalysts in a fluidized‐bed reactor. The optimum temperature ranges for NO reduction on the fresh and sulfated CuO/γ‐Al~2~O~3~ catalysts were 300–350 Β°C and 400–450 Β°C, respectively. NO reduction with the sulfated CuO/γ‐Al~2~O~3~ catalyst was somewhat higher than that with the fresh CuO/γ‐Al~2~O~3~ catalyst. N~2~O formation increased with increasing reaction temperature. Ammonia (NH~3~) slip increased with increasing gas velocity and decreased with increasing reaction temperature. Copyright Β© 2003 Society of Chemical Industry

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