Nitric oxide yield from combustion of a low calorific gasification product gas: numerical and experimental study (Q979587)

Summary: The nitrogen oxide yield in a combustor burning an ammonia rich product gas from a bubbling bed gasifier has been investigated. The measurements showed a surprisingly small effect of the excess air in the combustor on the NO\(_x\) emissions. To understand the reason for this behaviour the nitrogen chemistry in the combustor has been studied using CFD combined with a detailed description of the fuel-N chemistry. With higher oxygen excess a NO\(_x\) yield of 22\% is calculated compared to a measured NO\(_x\) yield of 21\%. In the case with lower oxygen excess the corresponding numbers are 20\% and 18\%, respectively.