Nitrogen oxide emission formation in a black liquor boiler

摘要

This study of nitrogen oxide(NOJ formation in a recovery boiler uses computational fluid dynamics(CFD)combined with a detailed reaction mechanism.The model is used to reveal where NO_x is formed in the recovery boiler and how different process parameters affect the emission.The CFD investigation includes a detailed model for black liquor droplet conversion and a model for the char bed behavior.The gas phase reactions are described using a reaction mechanism consisting of 21 species involved in 54 reactions.