Trace Metal Retention When Firing Hazardous Waste in a Fluidized-Bed Incinerator

摘要

The report describes a bench-scale fluidized-bed incinerator that will capture trace metals on the bed material when firing hazardous waste. The design is based on limited tests at an existing laboratory facility. Operating conditions, operating procedures, and equipment design are established for greater than 90 percent trace metal capture on the bed material. A surrogate hazardous waste, paint containing lead chromate, was used in the tests. Other trace metals were identified that can be captured by agglomeration on a silica bed material. The design provides the capability of operating in either a single or double stage configuration so that various bed materials or operating conditions can be used to capture different trace metals or to provide more effective capture. The bench-scale fluidized-bed incinerator will have the flexibility to operate with several fuels, bed materials, and fluxing agents, over a wide range of operating conditions.