Waste Glass Melter Process Monitoring with Millimeter Waves

[摘要] Millimeter-wave technologies can provide novel and reliable on-line monitoring capability for many important parameters inside nuclear waste glass melters including temperature, emissivity, density, and viscosity. The physical and analytical basis for millimeter-wave monitoring of molten glass is presented here along with initial experimental results. Tests were carried out at a frequency of 137 GHz (2.19 mm) with ceramic waveguides at temperatures up to 1500 C. The ability to resolve emissivity and temperature was demonstrated. Cold cap temperature profile measurements have been obtained in a pilot scale melter using a rotating waveguide. Also, the capability to monitor viscosity over a range of 20 to 2000 Poise was shown for a Hanford waste glass.

[发布日期] 2002-08-06 [发布机构] Massachusetts Institute of Technology

[关键词] Radioactive Wastes;12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities;Waveguides;36 Materials Science;Monitoring