Conversion of nitrogen compounds into nitrogen oxides during combustion in a fluidised bed reactor

Abstract

Combustion processes of alternative fuels with high nitrogen content can cause nitrogen oxides emission which is unacceptable from an environmental and legal point of view. Reactions of nitrogen compounds, e.g. ammonia or heterocyclic compounds, are complex and there is a lack of specialized complete knowledge about them. This paper reports processes of propane combustion in a fluidized bed reactor without and with ammonia or pyridine addition into the reaction zone, especially nitrogen compound conversion into N x O y. Ammonia is converted into N x O y up to 78%, and pyridine up to 93%. The main product of their reactions is NO (average 97%). Residual C 5 H 5 N or NH 3 are converted to N 2. Nitrogen compounds' influence on processes involving CO and VOC. The effect of pyridine addition to the reaction zone on the kinetics of combustion process is practically negligible. The effect of ammonia addition is noticeable but limited.

Effect of cenospheric fillers on the flammability and fire hazard of silicone rubber composites

“…Spectra from FTIR analyzer was continuously acquired every 5 s during experiment, and these data served as a basis for further evaluation. Utilization of several analyzers allowed to duplicate measurements of some components and thus eliminated the cross-effects on obtained data [13].…”