Abstract: An incineration system includes a rotary drum incinerator unit having a primary oxidation chamber and a secondary oxidation chamber for receiving gases of combustion from said primary chamber. The secondary chamber has a plurality of coaxially arranged walls which define a torturous reversing spiral flow path for gases of combustion passing through said secondary chamber whereby to effect substantial retention time and cyclonic separation of particulate matter from the gases.

Abstract: An incineration system for processing solid, semi-solid waste material and sludge includes an incinerator unit which has a horizontally disposed rotary primary oxidation chamber and a generally vertically disposed secondary oxidation chamber which receives gaseous products of combustion from the primary chamber. Baffles within the secondary chamber provide a tortuous gas flow path through the secondary chamber. Gaseous emissions from the incinerator unit pass through a heat recovery boiler, a baghouse and a scrubber tower before being discharged to atmosphere. A control system controls rotation of the primary oxidation chamber and an auger/shredder which feeds waste material to be burned into the primary oxidation chamber. The control system may include a programmable computer for modifying the control functions in response to programmed data relating to the characteristics of material processed in the incineration system.