LFCM (liquid-fed eramic melter) emission and off-gas system performance for feed component cesium

Technical Report · Mon Sep 01 04:00:00 EDT 1986

OSTI ID:7051044

Goles, R W; Andersen, C M

Except for volatile off-gas effluents, overall adequacy of the liquid-fed ceramic melter (LFCM) system depends most upon its effectiveness in dealing with cesium. However, the mechanism responsible for melter cesium losses has proved insensitive to many LFCM operating and processing conditions. As a result, variations in inleakage, plenum temperature, feeding rate and waste loading do not significantly influence melter cesium performance. Feed composition, specifically halogen content, is the only processing variable that has had a significant effect. Due to the submicron nature of LFCM-generated aerosols, melter disengagement design features are not expected to be particularly effective in reducing cesium emission rates. For the same reason, the cesium performance of conventional quench scrubbers is quite low, being dependent only upon the magnitude of melter entrainment losses. Although a deep bed washable filter has been effective in removing submicron aerosols from the process exhaust, high performance has only been achieved under dry operating conditions. The melter's idling state does not appear to place additional demands upon the off-gas treatment system.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 7051044
• Report Number(s): PNL-SA-13954; CONF-860905-25; ON: DE87003406
• Country of Publication: United States
• Language: English

Related Subjects

052001* -- Nuclear Fuels-- Waste Processing
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALKALI METALS
CERAMIC MELTERS
CESIUM
DATA
ELECTRIC FURNACES
ELEMENTS
EMISSION
EXPERIMENTAL DATA
FURNACES
INFORMATION
METALS
NUMERICAL DATA
OFF-GAS SYSTEMS
PERFORMANCE