Michael J Weber

US Patent:

52071766, May 4, 1993

Filed:

Nov 20, 1990

Appl. No.:

7/616192

Inventors:

Robert C. Morhard - Wylie TX
Peter J. Astrauskas - Joplin MO
Michael E. Weber - Joplin MO
Irving H. Tyler - Greensboro NC
Donald R. Beltz - Allentown PA
Mark M. Zaugg - Bountiful UT
Stanley E. Hill - Corona CA
Charles J. Trom - Costa Mesa CA
Johnny R. Isbell - El Dorado AR
Thomas E. Berty - Tustin CA

Assignee:

ICI Explosives USA Inc - Wilmington DE

International Classification:

A47J 3600
A47J 3624

US Classification:

110246

Abstract:

A hazardous waste incinerator (100) includes a rotary kiln (120) with a helical flight (250) within. The kiln (120) is fed hazardous waste by either a continuous feed system (164) or a positive feed system (162). The kiln (120) is comprised of six retort sections (202, 202, 204, 206, 208, 210). The combusted waste is separated into ash and recoverable metals. The air flow is counter to the flow of waste through the kiln (120), with exhaust gases vented from the kiln entrance. Fugitive emissions are also contained by shrouds (164, 166) and containment building (160). These exhaust gases pass through the secondary combustor (130) to ensure destruction of any principle organic hazardous constituents. The exhaust gases are then treated in a spray dryer (140) to cool it and neutralize any acidic components. A baghouse (150) then removes any remaining particulate matter before the exhaust exits the stack (156).