Can someone help me understand the difference between 3 stage combustion and dual stage gasification? I saw this presentation that was done for the NYS Research and Development Agency and put out by the EPA that compares the emissions from different type units. The 3 stage combustion unit was a Central Boiler E 2300 and the dual stage gasification unit was an Econoburn EBW 200. Are the combustion characteristics for the 3 stage combustion the same (i.e. high temperature, adequate turbulence and combustion time) as a downdraft gasifyer?