Minimizes NOx using only combustion control

You may not have to spend big bucks on an SCR system to reduce your NO. emissions. The retrofit of a 600-MW opposed-wall-fired utility boiler with low-NO, dual air zone burners and overfire air cut the Wyoming PRB coal burner's NOx output nearly in half. The key to the project's success, from the design stage through final testing and boiler tuning, was CFD modeling.