Regeneration of triethanolamine in conversion of potassium chloride and phosphogypsum
https://doi.org/10.29235/1561-8331-2019-55-2-247-253
Abstract
The possibility of purification of circulating solutions containing triethanolamine from CaCl2 impurities by introducing into them potassium carbonate is shown. This process procceds according to the reaction K2CO3 + CaCl2 → ↓CaCO3 + 2KCl. The influence of the consumption rate of potassium carbonate has been studied. It is shown that at the stoichiometric consumption rate of K2CO3, the content of Ca2+ ions in the liquid phase was 0,02 %, while with a K2CO3 deficiency of the stoichiometric consumption rate of 70 and 50 %, this value was 0,43 and 0,92 %, respectively. It has been established that the circulating solutions purified from CaCl2 can be used in the conversion of new portions of KCl and phosphogypsum.
About the Authors
Z. A. Hotto
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Zemfra A. Hotto – Researcher
9/1, Surganov Str., 220072, Minsk
I. I. Hancharyk
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Ina I. Hancharyk – Ph. D. (Engineering), Senior Researcher
9/1, Surganov Str., 220072, Minsk
V. V. Shevchuk
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Viacheslau V. Shevchuk – Corresponding Member, D. Sc. (Chemistry), Head of the Department of Mineral Fertilizers
9/1, Surganov Str., 220072, Minsk
A. L. Navnyko
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Anna L. Navnyko – Junior Researcher
9/1, Surganov Str., 220072, Minsk
E. O. Osipova
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Elena O. Osipova – Researcher
9/1, Surganov Str., 220072, Minsk
Y. K. Ostapenko
Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus
Belarus
Belarus
Yuliya K. Ostapenko – Researcher
9/1, Surganov Str., 220072, Minsk
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