Evaluation of Mass Transfer Performance for Caustic-Side Solvent Extraction of Cesium in a Conventional 5-cm Centrifugal Contactor

Birdwell, Jr. J.F.

Oak Ridge National Laboratory

关键词: Pumping;    Vanes;    Extraction Apparatuses;    Efficiency;    Switches;   

DOI  :  10.2172/814101
RP-ID  :  ORNL/TM-2001/278
RP-ID  :  AC05-00OR22725
RP-ID  :  814101

美国|英语

来源: UNT Digital Library

【 摘 要 】

Tests have been conducted to determine if satisfactory mass transfer performance is achieved using a fully pumping 5-cm centrifugal contactor under conditions present in the Caustic-Side Solvent Extraction (CSSX) process. Tests utilized a commercially available contactor that had been modified by installation of a rotor housing bottom that had straight radial vanes on the process side. As received from the vendor, the housing bottom was equipped with curved (impeller-type) vanes that were intended to promote phase separation by minimizing mixing of influent solutions. Stage efficiencies exceeding 85% were obtained under conditions, present in the extraction section of the CSSX flowsheet. Under CSSX stripping conditions the stage efficiency exceeded 90%. In both cases, the efficiencies obtained exceed the minimum requirement for acceptable transfer of cesium in the CSSX process.