NOx removal by NH3 and flammable additives in the selective non-catalytic reduction (SNCR) process

Abstract

Reducing nitrogen oxides (NOx) emissions is becoming much more difficult and expensive for stricter environmental requirements. NOx emission restriction could not be achieved only by primary NOx reduction methods. This paper presents results of experimental research work of NOx removal by selective non-catalytic reduction (SNCR) technology. Experiments were performed in the temperature range of 1000–1200 ^oC to investigate the effects of additives (NH₃, CH₄, C₂H₂ and mixture of C₃H₈/C₄H₁₀). Comparing additives effects of NOx reduction while burning furniture production waste received that with NH3 additive reduces 56% of primary NOx. Flammable additives can reduce up to 76 % NOx emissions in exhaust gasses. Results showed that SNCR technology with flammable additives can change traditional NOx reduction additives and this technology can be easily installed in existing boilers.

DOI: http://dx.doi.org/10.5755/j01.mech.23.5.16331