Experimentelle Untersuchungen zur Reduktion von Stickoxiden an einem atmosphärischen Flugstromreaktor

During the combustion of wood nitrogen oxides (NOx) are released out of fuel bound nitrogen. Thereby, the emissions rise with stoichiometry and temperature. The reduction factor HCN+NH3 / NO has major influence on NOx reduction, however wet chemical analysis of HCN and NH3 does not constitute a standardized measurement technique. When measuring HCN, flow rates during the probe extraction should be lower than 0.8 Nl/min. NOx emissions are reduced by 60 % with air staging, the reduction increases with longer residence times in the sub stoichiometric zone. The combination of air staging and ammonia injection is expected to further decrease the emissions.