THOR Bench-Scale Steam Reforming Demonstration

Marshall, D.W. ; Soelberg, N.R. ; Shaber, K.M.

Idaho National Engineering and Environmental Laboratory

关键词: Wastes;    Residues;    Nuclear Fuel;    Carbon;    Off-Gases;   

DOI  :  10.2172/820361
RP-ID  :  INEEL/EXT-03-00437
RP-ID  :  AC07-99ID13727
RP-ID  :  820361

美国|英语

来源: UNT Digital Library

【 摘 要 】

The Idaho Nuclear Technology and Engineering Center (INTEC) was home to nuclear fuel reprocessing activities for decades at the Idaho National Engineering and Environmental Laboratory. As a result of the reprocessing activities, INTEC has accumulated approximately one million gallons of acidic, radioactive, sodium-bearing waste (SBW). The purpose of this demonstration was to investigate a reforming technology, offered by THORsm Treatment Technologies, LLC, for treatment of SBW into a ''road ready'' waste form that would meet the waste acceptance criteria for the Waste Isolation Pilot Plant (WIPP). A non-radioactive simulated SBW was used based on the known composition of waste tank WM-180 at INTEC. Rhenium was included as a non-radioactive surrogate for technetium. Data was collected to determine the nature and characteristics of the product, the operability of the technology, the composition of the off-gases, and the fate of key radionuclides (cesium and technetium) and volatile mercury compounds. The product contained a low fraction of elemental carbon residues in the cyclone and filter vessel catches. Mercury was quantitatively stripped from the product but cesium, rhenium (Tc surrogate), and the heavy metals were retained. Nitrates were not detected in the product and NOx destruction exceeded 98%. The demonstration was successful.