Mechanisms of N2O Formation from Char Combustion

Autor:	Hao Liu, Jian Wei Yuan, Bo Feng, De chang Liu, Zhi jie Lin, Bo G Leckner
Rok vydání:	1996
Předmět:	General Chemical Engineering Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Atmospheric temperature range Combustion Nitrogen Oxygen Fuel Technology chemistry Chemical engineering Homogeneous Limiting oxygen concentration Char NOx
Zdroj:	Energy & Fuels. 10:203-208
ISSN:	1520-5029 0887-0624
DOI:	10.1021/ef9500898
Popis:	This paper describes an experimental study on N2O and NOx emission from char combustion. Experiments have been carried out in a fixed bed reactor in the temperature range of 973−1323 K. Oxygen concentrations for combustion, temperature, and char type have been found to have strong effects on both N2O and NOx emissions. With an increasing temperature, N2O reaches a peak at 1073 K and then decreases with temperature. At the same time NOx remains nearly the same. When oxygen concentration increases, the concentration of N2O increases and NOx first increases and then decreases. The char with higher nitrogen content emits more N2O, indicating that nitrogen oxides come from char-N. When NO is included in the inlet gases, much more N2O is produced from char combustion. This suggests that the reaction of NO + O2 + char is the main pathway for N2O formation. Another pathway, i.e., the homogeneous oxidation of HCN from the gasfication of char, seems to be important as well.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5cccdb65082cbafa290fdb372fb64c8c https://doi.org/10.1021/ef9500898 Zobrazit plný text záznamu