The Moss gasification combustion system is a two (2) stage process design that gasifies (produces syngas) in the primary chamber and ignites the syngas in a secondary chamber (Moss thermal reactor) producing a clean efficient flue gas that can be used in a boiler, dryer, kiln or any heat exchanger process requirement. Our gasifier system is capable of burning various wood or biomass fuels that are low or high in moisture. Ash fusion temperature, ash, BTU and moisture content are a few of the fuels components that we always consider when evaluating the fuel to be burned. The Moss gasifier design promotes safety first and is far superior to most others when burning dry fuel because of the way fuel is augured into the chamber and the way that underfire air is introduced into the grate assembly. Our gasifier design also helps prevent a "blow back" from occurring that may cause a fire in the fuel storage facility. Safety in a dry fuel application is always a major concern for Moss design personnel. Not all combustion chamber designs can burn dry fuels safely.

Our system provides superior combustion technology with multi-zone grate underfire air, multi-port overfire air system, providing high turndown capabilities powered by our custom designed combustion control system. Moss has several grate assembly designs which allows our engineers to choose the correct system for the fuel to be burned. Many factors including ash, moisture and BTU content, ash fusion temperatures, whether the system is automatic ash removal or manual, etc., determine the proper grate system for the application. Moss also provides several proven techniques in our gasifiers that promote clean and fuel rich syngas. Because of our low pressure fan and air distribution within the grate, the Moss gasifier minimizes particulate carryover from the secondary phase of the combustion chamber. Since ash and unburned particles are less likely to become airborne, the heat exchanger device is less likely to require cleaning and emission equipment may be reduced in size. This reduces initial capital cost and future operating cost.

Once syngas is formed in the primary gasification chamber, it is transferred through refractory lined ductwork at temperatures between 1,100 1450 F. (593 - 788 C.) into our thermal reactor ignition system. This high pressure drop turbulent low excess air ignition system promotes thermal destruction of the gases at low temperatures ranging from approximately 1,600 2,100 F. Because of the low excess air required in this device and if FGR is utilized, the burner system operates with lower flame temperatures; therefore, reducing thermal NOx emissions (thermal NOx is formed in the 2,500 F. range). Because of the multi-stage nozzle design of the thermal reactor, superior ignition air and primary chamber gas mixing occurs and low CO emissions are achieved.