Waste-to-Energy Combustors provide underfire air to the refuse through openings in the grates o Most refuse combustors operate in the range of 1800 to 2000F(980 to 1090C)which ensures good combustion and elimination of odors and is still sufficiently low to protect the refractory materials lining the combustion o If below 1400F(770C)many of the plastics will not burn,Above 2000F(1090C),the refractories in the furnace will not be able to stand the heat o As the amount of excess air is increased,the temperature drops UNEPWaste-to-Energy Combustors provide underfire air to the refuse through openings in the grates  Most refuse combustors operate in the range of 1800 to 2000ºF (980 to 1090ºC) which ensures good combustion and elimination of odors and is still sufficiently low to protect the refractory materials lining the combustion  If below 1400ºF (770ºC) many of the plastics will not burn, Above 2000ºF (1090ºC), the refractories in the furnace will not be able to stand the heat  As the amount of excess air is increased, the temperature drops