Abstract
Decomposition of ammonia, NH{sub 3}, and reaction products formed in decomposition were studied. In particular, reactions of NH{sub 3} in gas phase with addition of different oxidizers to the gas were studied. Test equipment consisted of a quartz reactor positioned in an electric oven. The synthetic mixture of the gasification gas and the oxidizers studied was fed into the reactor at atmospheric pressure. Thermal decomposition of NH{sub 3} was insignificant with no added oxidizers and the reaction time of 4 s and up to the temperature 1000 deg C. However, possible impurities contained in gases cause easily catalytic deposits on reactor surfaces. These deposits may contribute to the decomposition of NH{sub 3} The NH{sub 3} content of the gas can be reduced by deg 2 addition. When 2.5 vol % of oxygen was added to the gas, 20 - 25 mol % of NH{sub 3} decomposed at high temperature. The decomposition of NH{sub 3} increased with an increased deg 2 addition. If CH{sub 4} was present in the gas, the variations in the concentrations of other gas components such as H{sub 2} had only an insignificant effect on the decomposition degree of NH{sub 3}. If no CH{sub 4} was present
More>>
Citation Formats
Leppaelahti, J, Koljonen, T, Kilpinen, P, and Hupa, M.
Selective non-catalytic oxidation of ammonium in gasification gas.
Finland: N. p.,
1994.
Web.
Leppaelahti, J, Koljonen, T, Kilpinen, P, & Hupa, M.
Selective non-catalytic oxidation of ammonium in gasification gas.
Finland.
Leppaelahti, J, Koljonen, T, Kilpinen, P, and Hupa, M.
1994.
"Selective non-catalytic oxidation of ammonium in gasification gas."
Finland.
@misc{etde_10128934,
title = {Selective non-catalytic oxidation of ammonium in gasification gas}
author = {Leppaelahti, J, Koljonen, T, Kilpinen, P, and Hupa, M}
abstractNote = {Decomposition of ammonia, NH{sub 3}, and reaction products formed in decomposition were studied. In particular, reactions of NH{sub 3} in gas phase with addition of different oxidizers to the gas were studied. Test equipment consisted of a quartz reactor positioned in an electric oven. The synthetic mixture of the gasification gas and the oxidizers studied was fed into the reactor at atmospheric pressure. Thermal decomposition of NH{sub 3} was insignificant with no added oxidizers and the reaction time of 4 s and up to the temperature 1000 deg C. However, possible impurities contained in gases cause easily catalytic deposits on reactor surfaces. These deposits may contribute to the decomposition of NH{sub 3} The NH{sub 3} content of the gas can be reduced by deg 2 addition. When 2.5 vol % of oxygen was added to the gas, 20 - 25 mol % of NH{sub 3} decomposed at high temperature. The decomposition of NH{sub 3} increased with an increased deg 2 addition. If CH{sub 4} was present in the gas, the variations in the concentrations of other gas components such as H{sub 2} had only an insignificant effect on the decomposition degree of NH{sub 3}. If no CH{sub 4} was present in the gas, the H{sub 2} concentration had a significant effect on NH{sub 3} decomposition. When the H{sub 2} content was 7 vol %, about 65 % of NH{sub 3} was decomposed by adding 2.5 vol % oxygen}
place = {Finland}
year = {1994}
month = {Dec}
}
title = {Selective non-catalytic oxidation of ammonium in gasification gas}
author = {Leppaelahti, J, Koljonen, T, Kilpinen, P, and Hupa, M}
abstractNote = {Decomposition of ammonia, NH{sub 3}, and reaction products formed in decomposition were studied. In particular, reactions of NH{sub 3} in gas phase with addition of different oxidizers to the gas were studied. Test equipment consisted of a quartz reactor positioned in an electric oven. The synthetic mixture of the gasification gas and the oxidizers studied was fed into the reactor at atmospheric pressure. Thermal decomposition of NH{sub 3} was insignificant with no added oxidizers and the reaction time of 4 s and up to the temperature 1000 deg C. However, possible impurities contained in gases cause easily catalytic deposits on reactor surfaces. These deposits may contribute to the decomposition of NH{sub 3} The NH{sub 3} content of the gas can be reduced by deg 2 addition. When 2.5 vol % of oxygen was added to the gas, 20 - 25 mol % of NH{sub 3} decomposed at high temperature. The decomposition of NH{sub 3} increased with an increased deg 2 addition. If CH{sub 4} was present in the gas, the variations in the concentrations of other gas components such as H{sub 2} had only an insignificant effect on the decomposition degree of NH{sub 3}. If no CH{sub 4} was present in the gas, the H{sub 2} concentration had a significant effect on NH{sub 3} decomposition. When the H{sub 2} content was 7 vol %, about 65 % of NH{sub 3} was decomposed by adding 2.5 vol % oxygen}
place = {Finland}
year = {1994}
month = {Dec}
}