Summary
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1.
The bulk of the inhibitor material in spent water/urea slurry is present in the dissolved state; only a very small part is adsorbed on the urea crystals.
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2.
The optical density of the urea solution is related to the concentration of inhibitors in the solution.
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3.
The inhibitors of adduct formation are thermally stable and do not distill over with the water.
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Literature cited
T. A. Smolina, F. A. Chegodaev, and B. V. Klimenok, Neftepererab. Neftekhim., No. 10, 7 (1974).
B. V. Klimenok and L. N. Pirkis, Sb. Tr. Ufimsk. Neft. Inst. (Bashizdat, Ufa), No. 1, 202 (1956).
A. T. Zotov, Urea [in Russian], Goskhimizdat, Moscow (1963), p. 163.
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Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 5, pp. 28–30, May, 1976.
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Smolina, T.A., Chegodaev, F.A. & Klimenok, B.V. Distribution of adduct-formation inhibitors between phases in spent water/urea slurry. Chem Technol Fuels Oils 12, 362–365 (1976). https://doi.org/10.1007/BF00717932
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DOI: https://doi.org/10.1007/BF00717932