Nationwide Boiler developed the CataStak™ SCR to address stringent emissions regulations specifically ... Some of these burners utilize flue gas recirculation (FGR) and higher gas delivery pressures, ...

The costs are a function of the flue gas flow rate through the SCR. •Air Preheater Modifications: Thicker and smoother material is used for the heat transfer surfaces in the preheater. A larger motor ...