Incineration of combustible waste materials

Abstract From the Canadian patent

Garbage and other incinerable waste is treated with hot air and steam in a rotary furnace, under conditions inhibiting free and complete combustion, so as to produce a gaseous phase and a solid phase consisting of noncombustible solids. The gaseous phase is mixed with excess air and recirculated combustion gases and passed to a cyclone chamber in which further combustion takes place at a temperature controlled so as to destroy toxic organic compounds and to melt solids such as glass but insufficient to promote excessive nitrogen oxide formation. The gases are then passed through a ceramic heat exchanger, tempered with ambient air in a further cyclone chamber to cause any residual molten …