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Effect of oxygen and water vapor on the removal of styrene and ammonia from nitrogen by non-pulse corona-discharge at elevated temperatures

2003; Elsevier BV; Volume: 97; Issue: 2-3 Linguagem: Inglês

10.1016/s1385-8947(03)00212-2

1873-3212

Wiwut Tanthapanichakoon, Tawatchai Charinpanitkul, Sahat Chaiyo, Nantamas Dhattavorn, Jintawat Chaichanawong, Noriaki Sano, Hajime Tamon,

Catalytic Processes in Materials Science

The present work experimentally investigates the individual and combined effect of O2 and H2O vapor on the separate and simultaneous removal of styrene and NH3 from N2 at elevated temperatures via corona-discharge reactions. Styrene and NH3 are chosen to represent the trace components in crematory emission because they are chemically dissimilar. Since the crematory emission always contains some O2 and H2O at elevated temperatures, their effects and the effect of elevated temperature are of practical interest. It is found that the presence of O2 in N2 always enhances the removal of styrene and/or NH3 from N2. The presence of H2O in N2 generally enhances the removal of styrene and/or NH3 but its presence retards that of NH3 when H2O concentration is too high or the temperature is 300 °C. The combined effect of O2 and H2O is found to substantially retard the removal of styrene and/or NH3 compared to the sole effect of coexisting O2. The general effect of elevated temperature is to decrease the removal efficiency of styrene and/or NH3 compared to the case of room temperature.