Estimated Maximum Gas Retention from Uniformly Dispersed Bubbles in K Basin Sludge Stored in Large-Diameter Containers

Gauglitz, Phillip A. ; Terrones, Guillermo

Pacific Northwest National Laboratory (U.S.)

关键词: Corrosion;    Sludges;    K East Basin, Ke Basin, K Basin, Sludge, Sludge Storage, Large Diameter Container, Gas, Gas Retention, Gas Hold-Up, Gas Generation, Uniform Gas Generation, Void Fraction, Safety Basis, Volume Expansion, Uranium Corrosion, Hydrogen Generation, Shear Strength, Yield Strength, Capillary Force;    Thermal Conductivity;    08 Hydrogen;   

DOI  :  10.2172/15001321
RP-ID  :  PNNL-13893
RP-ID  :  AC05-76RL01830
RP-ID  :  15001321

美国|英语

来源: UNT Digital Library

【 摘 要 】

This letter report addresses the KE Basin sludge that will be retrieved and stored in large-diameter containers (LDCs.) A fraction of the hydrogen gas bubbles generated from the corrosion of uranium metal and oxides may be retained within the sludge matrix. Those entrapped bubbles will expand the sludge bed volume and, therefore, will affect how much sludge can be loaded into a container. The entrapped gas bubbles will also impact the overall thermal conductivity and heat capacity of the sludge bed. The evaluation summarized here was performed to estimate the maximum gas holdup (volume fraction gas) that could occur sludge stored in large-diameter containers, assuming uniform gas generation (i.e., uniform distribution of metallic uranium particles). This report represents an evaluation of the retention of uniformly distributed bubbles and an estimate of the maximum gas fraction that might be retained in K Basin LDCs based on existing literature data on bubble retention and Basin sludge characterization data. Existing data show that the maximum gas fraction varies, depending on physical properties and the configuration of the material or waste.