J. Czerwińska1, O. Namiecińska1, G. Wielgosiński1,
1) Lodz University of Technology, Faculty of Process and Environmental Engineering, Łódź, PL; 2) Lodz University of Technology, Faculty of Architecture, Civil and Environmental Engineering, Łódź, PL
NITROGEN OXIDES EMISSION REDUCTION ON SCR CATALYST
Nitrogen oxides are considered to be the most dangerous atmospheric pollutants. The new Directive 2010/75/EC on industrial emissions adopted in 2010 envisages significant reduction of emission standards for power plants and waste incineration plants in the coming years. The one of the most effective technologies for NOx emission mitigation is selective catalytic reduction - SCR which was evolved in the 1980s.
Between April and July 2017, a research project funded by the Polish Agency for Enterprise Development, on implementation a SCR technology for of nitrogen oxide emissions in the medical waste incineration plant operating in the Bydgoszcz Center for Oncology were carried on. The installation has been equipped with a catalytic rector, with a catalyst originally prepared in Poland in accordance to patent PN 218 300. As a result of the tests, the use of a SCR catalytic converter has been found to reduce NOx emissions by approximately 70% (NOx concentration in exhaust gases was below 50 mg/m3N - 25% of the current emission standard for waste incineration plants and large combustion facilities). The research confirmed the high efficiency of the new catalyst, which costs about 25-30% less than the catalysts offered by foreign suppliers.
Keywords: waste incineration, selective catalytic reduction, nitrogen oxides, polish catalyst