Method and apparatus for incinerating waste material

摘要: A method and apparatus for incinerating waste material in a multiple hearth furnace having plurality of vertically spaced hearths wherein is introduced to the at top thereof moves downwardly generally serpentine fashion moving alternately inwardly outwardly across discharged bottom furnace, including steps introducing towards lowermost air quantity less than that theoretically required complete combustion being processed, thereafter successively higher ascertaining temperature each adding thereto quantities only sufficient support thereon, on middle portion enough so as maintain under maximum predetermined limit, reducing added, thence discharging exhaust gases furnace.