Characterization and recovery of solvent entrained during the use of centrifugal contactors.

Arafat, H. A. ; Hash, M. C. ; Hebden, A. S. ; Leonard, R. A.

Argonne National Laboratory

关键词: Centrifuges;    Testing;    Switches;    36 Materials Science;    Extraction Apparatuses;   

DOI  :  10.2172/797933
RP-ID  :  ANL-02/08
RP-ID  :  W-31-109-ENG-38
RP-ID  :  797933

美国|英语

来源: UNT Digital Library

【 摘 要 】

In this work, we determined how a decanter for the aqueous effluents would work for solvent extraction operations using a centrifugal contactor. Solvent entrainment was measured in the raffinate and strip aqueous effluents in the caustic-side solvent extraction (CSSX) process. Values were obtained for both the solvent concentration and its droplet size distribution. The mixing intensity of the two phases in the mixing zone of the contactor was used to simulate the performance of lab-scale, pilot-plant, and plant-scale contactors. The droplet size distributions were used to estimate the amount of solvent that would be recovered using a decanter tank. It was concluded that the performance of decanter tanks will not be as effective in solvent recovery in the CSSX plan as that of other equipment, such as centrifuges and coalescers. Future testing is recommended to verify the performance of this alternative equipment.