The E2Stak is a concept built around Nationwide's proven environmental controls, the CataStak™ SCR System and EconoStak economizers. It combines the CataStak™ SCR systems's low NOx emission reductions with the EconoStak's efficiency savings, in one engineered emissions/efficiency flange to flange package. Through a dual-phased approach, you will reduce your fuel consumption resulting in significant cost savings, while reducing overall emissions.

The first phase of the E²Stak solution, emissions reductions, is achieved with the CataStak™ SCR System, capable of reducing NOx emissions by over 90% to less than 5 ppm for gas-fired boiler applications and 2.5 ppm for gas turbine applications. It is mounted to the exhaust stack of the boiler and the technology uses catalyst and ammonia as a reducing agent to convert NOx to harmless nitrogen and water.

The second phase of the system, energy efficiency, is accomplished using EconoStak economizers. Hot gases from the CataStak™ SCR System flow through the EconoStak and the extended surface finned tube economizer captures valuable waste heat and sends it back into the boiler feedwater or make-up water, saving a considerable amount of fuel and significantly reducing operating costs.

• Decrease operating costs • Reduce emissions/pollutants • Simple start-up and installation • Easy field retrofit • Simple controls – minimum    operator intervention • Stand-alone operation • One source responsibility • Engineered flange to flange packaged system

The E²Stak provides all the benefits the CataStak™ SCR System and EconoStak have to offer: decreased emissions, increased energy efficiency, and GHG/carbon reducing solutions, thus providing a positive payback.

Read out latest literature about E²Stak solutions and learn how the E²Stak provides immediate emission reductions efficiency gains to our customers.