Development of high performance clarification system for FBR dissolver liquor

高速炉燃料溶解液用高性能清澄システムの開発

竹内 正行 ; 北垣 徹  ; 野口 芳宏*; 鷲谷 忠博 

Takeuchi, Masayuki; Kitagaki, Toru; Noguchi, Yoshihiro*; Washiya, Tadahiro

A high performance clarification system has been discussed for advanced aqueous reprocessing of FBR spent fuel. In this study, the new clarification system based on the hybrid of centrifuge and filtration was proposed to get the high separation ability of the component of whole insoluble sludge. The clarification tests of simulated solid species were carried out to evaluate the clarification performance using small-scale test apparatus of centrifuge and filter unit. The density effect of solid species on the collection efficiency was mainly evaluated in the centrifugal clarification test. In the filtration test using ceramic filter with pore size of 0.2um, on the other hand, permeability and filtration rate were evaluated in addition to the filtration efficiency. It was evaluated that the collection efficiency of solid species on the new clarification system was estimated as nearly 100 percent.