Temperature management of centrifugal contactor for caustic-side solvent extraction of cesium from tank waste.

Arafat, H. A. ; Leonard, R. A.

Argonne National Laboratory

关键词: Liquid Wastes;    Radioactive Waste Processing;    Performance Testing;    Extraction Apparatuses;    Savannah River Plant;   

DOI  :  10.2172/783629
RP-ID  :  ANL-00/31
RP-ID  :  W-31-109-ENG-38
RP-ID  :  783629

美国|英语

来源: UNT Digital Library

【 摘 要 】

A 32-stage centrifugal contactor underwent proof-of-concept testing for its potential use in caustic-side solvent extraction for removal of cesium from radioactive waste now stored in underground tanks at the Savannah River Site. This contactor met the performance goals. Maintaining this performance, however, depends on adequate temperature management. Subsequent calculations and measurements determined the effect of several sources of heat on the temperature of the liquid inside the contactor stages: heats of solvation and dilution, heat generated by the rotor in the mixing zone, and heat from the motor used to spin the rotor. The results indicated that over 90% of the heat comes from the motors, generating 12 W of thermal energy per stage. It was concluded that satisfactory temperature management of the contactor should be achievable by cooling the extraction section to remove 12 W of heat per stage.