Alloy rotary kilns for hazardous waste disposal

The major conclusions of the study of rotary kilns for processing abrasive, energetic or corrosive hazardous wastes are: Alloy kilns are preferable to smaller refractory lined kilns for abrasive and/or explosive feed materials. Alloy construction and bolted sections make alloy kilns transportable; a pyrolysis operating mode can reduce the equipment size for wastes with a high energy release rate. However, reliable rotary seals are essential for the safety of the pyrolysis mode kiln; and a cocurrent operating mode may be desirable if recontamination of solids is not a concern. For chemical munition demilitarization a countercurrent operating mode is essential to assure no recontamination of the solids discharge. Computer models can be used for reliable kiln sizing and performance predictions.