| 摘要 |
<p>A fluidized bed radwaste volume reduction system, including method and apparatus. Low level radioactive waste divided into three classes combustible solids, ion exchange resins and filter sludges, and liquids emanating from a reactor facility are respective introduced at separate intervals of time through an integrated waste influent system into a common fluidized bed vessel (30) where volume reduction either through incineration or calcination occurs. Addition of a selected substance to the ion exchange resin before incineration inhibits the formation of low-melting point materials which tend to form clinkers in the bed (66). Solid particles are scrubbed or otherwise removed from the gaseous effluent of the vessel in an off-gas system, before the cooled and cleaned off-gas is released to the atmosphere. Iodine is chemically or physically removed from the off-gas. Otherwise, the only egress materials from the volume reduction system are containerized dry solids and tramp material. The bed material used during each mode may be circulated, cleaned, stored and exchanged from within the bed vessel by use of a bed material handling system. An instrumentation and control system provides operator information, monitors performance characteristics, implements start up and shut down procedures, and initiates alarms and emergency procedures during abnormal conditions. </p> |
