Annular centrifugal contactors

Meikrantz, D.H., Law, J., Todd, T. 2007. Design attributes and scale up testing of annular centrifugal contactors. Chemical Engineering Division of the AIChE Spring National Meeting, April 10-14, 2005, Atlanta, GA. INL/CON-05-00088. 

The annular centrifugal contactor is designed so that each stage achieves the required mixing and subsequent separation. Besides the conditions specified above, at least five additional factors must be considered. First, to allow the dispersion to flow by gravity from the mixing zone into the rotor, stationary radial vanes under the rotor must dissipate the rotational velocity of the dispersion. Second, the rotor inlet (RI) must be small... 

FIGURE 10.2 Mixing zone of a 2-cm annular centrifugal contactor. (Figure 10.2b Reprinted from Leonard, R. A., D. B. Chamberlain, and C. Conner., Sep. Sci. Technol. 32(1-4), 193-210, 1997. With permission of Taylor Francis Ltd., http //www.tandf.co.uk/journals.)... 

FIG U RE 10.12 Variations in the mixing zone with time at constant operating conditions for a 12-cm annular centrifugal contactor. 

FIGURE 10.23 1.2 -cm Annular centrifugal contactor by Rousselet-Robatel being assem-... 

The INET annular centrifugal contactors are being used to partition high-level liquid waste so that the back end of the nuclear fuel cycle can be simplified. In particular, the TRPO process has been developed at INET for this application (Song, 2000), where TRPO is the extractant in the process solvent. Also known as Cyanex 923, TRPO is a trialkyl phosphine oxide that is made commercially by Cytec Industries (formerly American Cyanamid). It has a high affinity for the actinides. Further... 

Bernstein, G. J., D. E. Grosvenor, J. F. Lenc, and N. M. Levitz. 1973. A High-Capacity Annular Centrifugal Contactor. Nucl. Technol. 20, 200-202. 

Duan, W., X. Zhou, and J. Zhou. 2006. Extraction of Caffeine with Annular Centrifugal Contactors. Solvent Extr. IonExch. 24(2), 251-259. 

Duan, W., J. Wang, J. Chen, et al. 2007. Development of Annular Centrifugal Contactors for TRPO Process Tests. J. Radioanal. Nucl. Chem. 273(1), 103-107. 

Law, J., D. Meikrantz, T. Gam, et al. 2006. The Testing of Commercially Available Engineering- and Plant-Scale Annular Centrifugal Contactors for the Processing of Spent Nuclear Fuel. 15th Pacific Basin Nuclear Conference, October 15-20, Sydney, Australia, Idaho National Laboratory Report INL/CON-06011498 PREPRINT, Idaho... 

Vedantam, S. and J. B. Joshi. 2006. Annular centrifugal contactors—A Review. Trans IChemE, Part A, Chem. Eng. Res. Design 84( A7), 522-542. 

Wardle, K. E. 2008. Computational and experimental analysis of the flow in an annular centrifugal contactor. PhD diss., Univ. of Wisconsin-Madison. 

Wardle, K. E., T. R. Allen, and M. H. Anderson. 2008. Free Surface Flow in the Mixing Zone of an Annular Centrifugal Contactor. AIChE J. 54, 74—84. 

Xiangming, H. 2008. Development of a Compact Miniature Annular Centrifugal Contactor for Hot Cell Placement. Chem. Eng. Comm. 195(10), 1127-1239. 

Zhou, J., W. Duan, X. Zhou, and C. Zhang. 2006b. Extraction of Hydrocortisone from the Fermentation Liquor with Annular Centrifugal Contactors. Sep. Sci. Technol. 41(3), 573-581. 

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