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Accession Number DE13-1105967
Title Final Report-Engineering Study for DWPF Bubblers, VSL-10R1770-1, Rev. 0, Dated 12/22/10.
Publication Date Jun 2013
Media Count 77p
Personal Author A. A. Kruger G. A. Diener I. Joseph I. L. Pegg K. S. Matlack R. A. Callow W. K. Kot
Abstract The current liquid waste operations contract, held by Savannah River Remediation, LLC (SRR), at the Department of Energy's Savannah River Site (SRS) centers on a number of systemwide process improvements to enhance the efficiency of liquid waste treatment and reduce the lifecycle operational costs. One featured improvement, centers on increasing the waste treatment rate of the Defense Waste Processing Facility's (DWPF) melter operation, whereby the objective of nearly doubling high level waste (HLW) glass canister production to 400 per annum is sought. This goal will be achieved through the transfer of joule heated ceramic melter (JHCM) bubbling technology from the Hanford Tank Waste Treatment and Immobilization Plant (WTP) to the DWPF JHCM. Large-scale testing for the WTP on various melter platforms and over a range of feed compositions has provided data that underpin the ability to achieve the required production rate increase at the DWPF. In JHCMs, waste and glass forming chemicals or glass frit are fed onto the surface of the molten glass pool to form a cold cap region, where a number of process rate controlling physical and chemical reactions occur. As the feed materials travel downward through the cold-cap (vertical melting process), water is evaporated, salts are decomposed and melted, and the products are combined to form molten glass that then becomes part of the underlying pool. The essential melt-rate limiting processes are the transport of heat to and through this zone to fuel the conversion reactions and the mass transport of the reaction products away from this zone. In traditional JHCMs, such as those deployed at the West Valley Demonstration Project (WVDP) and DWPF in the US as well as those deployed in Germany/Belgium and Japan, the electrical energy supplied to the molten glass pool by joule heating is transported to the cold cap region by natural thermal convection, which is relatively inefficient in the viscous glass melt and, in turn, limits mass transport.
Keywords Ceramic melters
Chemical reactions
Liquid wastes
Radioactive waste processing
Waste treatment

Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 77G - Radioactive Wastes & Radioactivity
Corporate Author Department of Energy, Richland, WA. Office of River Protection.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1412
Contract Number N/A

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