Influence of disturbances in municipal waste incineration plants on catalytic converters

摘要

Forced by legislation, a series of catalytic converters have been installed in german municipal waste incineration (MWI) plants to reduce nitrogen oxides and/or polychlorinated dibenzodioxins/furans (PCDD/F). The catalytic material is usually based on TiO_2 doped with V_2O_5 and WO_3. During the past 2 years, problems arose especially in new installations in connection with disturbances in the combustion chamber. The emission of great amounts of carbon monoxide and other products of incomplete combustion caused fast temperature excursions in the catalytic converters.