Thermodynamic calculations of the interaction of gaseous uranium hexafluoride and ammonia were performed. Possible mechanisms for the recovery of uranium hexafluoride are examined. It is shown that the uranium in this system will be recovered mainly due to the ammonia proper and not the formed atomic hydrogen as previously believed. The calculations showed that the calorimetric, theoretical, and actual temperature of the interaction reaction of uranium hexafluoride and ammonia is numerically equal to ~0 K, i.e., uranium hexafluoride and ammonia react at any temperature. In application to the Kedr apparatus, it is concluded that the reactor walls must be cooled substantially or a cooling gas must be introduced into the reaction zone in amounts sufficient to compensate the heat of reaction in order to avoid an unpredictable rate of the flame process.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
B. V. Gromov, Introduction to the Chemical Technology of Uranium, Atomizdat, Moscow (1978).
S. V. Danilov, A. V. Ovcharov, and S. A. Malov, Technical and Economic Analysis of Technological Schemes of the Plants at COMURHEX Co.: IBR Report, Moscow (2011).
S. V. Danilov, A. V. Ovcharov, V. P. Mashirev, et al., Conversion Technologies of AREVA-Group Enterprises in Malvesi and Pierrelatte: IBR Report, Moscow (2012).
N. P. Galkin, B. N. Sudarikov, and V. A. Zaitsev, “Interaction of uranium hexafluoride with ammonia,” At. Energ., 6, No. 6, 530–534 (1960).
V. D. Kosynkin, Investigation of the Process of Recovering Uranium Hexafluoride by Means of Ammonia: Dissert. Cand. Techn. Sci., VNIIKhT, Moscow (1964).
M. Kh. Karapet’yants, Introduction to the Theory of Chemical Processes, Vysshaya Shkola, Moscow (1975).
N. P. Galkin, V. A. Zaitsev, and M. B. Seregin, Catching and Reprocessing of Fluorine-Containing Gases, Atomizdat, Moscow (1975).
A. V. Grunskii, Calculations of High-Temperature Processes of Fluoride Metallurg: Dissert. Cand. Chem. Sci., RKhTU im. Mendeleeva, Moscow (2002).
A. N. Evdokimov, V. D. Vdovichenko, O. B. Gromov, et al., “Study of the process of recovering uranium hexafluoride by hydrogen on the Minimodul apparatus,” Khim. Tekhnol., 10, No. 2, 118–125 (2009).
Author information
Authors and Affiliations
Additional information
Translated from Atomnaya Énergiya, Vol. 123, No. 4, pp. 206–210, October, 2017.
Rights and permissions
About this article
Cite this article
Gromov, O.B., Utrobin, D.V., Travin, S.O. et al. Thermodynamic Study of the Interaction Reaction of Ammonia and Uranium Hexafluoride. At Energy 123, 248–253 (2018). https://doi.org/10.1007/s10512-018-0334-4
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10512-018-0334-4