Release and Conversion of Fuel-bound Nitrogen during Fixed-bed Gasification and Subsequent Staged Combustion

C. Mandl, I. Obernberger, C. Benesch & R. Scharler
This paper presents experimental results derived from test runs performed with a laboratory-scale updraft fixed-bed gasifier coupled to a combustion chamber to produce data for the investigation of the release behaviour and the conversion of fuel-bound nitrogen during gasification and subsequent staged combustion of the producer gas using softwood pellets. The concentrations of relevant nitrogenous gas species including tars have been measured in the producer gas and at different positions in the combustion chamber. Based...