Technological and kinetic regularities of formation of suspension and its interaction with nitric acid while obtaining calcium nitrate

Authors

DOI:

https://doi.org/10.15587/1729-4061.2016.74941

Keywords:

calcium nitrate, lime, hydration, concentration, suspension, neutralization, nitrate acid, technology

Abstract

The results of studying the processes of forming calcium hydroxide transportation suspensions and their neutralization by nitrate acid with the development of energy­saving technologies of obtaining calcium nitrate were presented.

As a result of the research, the process of calcium oxide hydration in the calcium nitrate solution was substantiated and the mechanism of the suspension thickening was proposed.

The limit lime concentrations in the calcium nitrate solutions were established, the process of calcium oxide hydration in these solutions was theoretically calculated. The mechanism of thickening of the prepared suspension (suspension of Са(ОН)2 in Са(NO3)2 solution), based on the formation of hydrogen bonds due to the presence of oxygen with unfilled orbitals, was explored.

The degree of CaO conversion (kinetics of hydration) depending on the time and the intensity of mixing in 35 % solution of calcium nitrate, which increases from 0.67 to 0.89 o. n. with an increase in the intensity of mixing Re=1000÷13000 was established. The limit of the lime content for different concentrations of Са(NO3)2) was defined: for 15 %­solution of calcium nitrate, the highest possible lime concentration on conversion to СаО is 350 g/dm3, for 20 %­solution, it is 320 g/dm3, for 25 %­solution, it is 295 g/dm3, for 30 %­solution, it is 275 g/dm3, for 35 %­solution – 240 g/dm3 and for 40 %­solution, it is 200 g/dm3, respectively.

The results of the experimental research presented in the form of graphical dependencies and tabular data may be used for the improvement of existing and design of the new production facilities of calcium nitrate.

Author Biographies

Mykola Oliinyk, Dniprodzerzhynsk state technical university Dniprobudivska str., 2, Dneprodzerzhinsk, Ukraine, 51918

Teacher

Department of Chemical Technology of Inorganic Substances

Аnatoliy Shestozub, Dniprodzerzhynsk state technical university Dniprobudivska str., 2, Dneprodzerzhinsk, Ukraine, 51918

PhD, Associate Professor

Department of Chemical Technology of Inorganic Substances 

Vladimir Suprunchuk, Technology National Technical University of Ukraine «Kyiv Polytechnic Institute» Pobedi ave., 37, Kyiv, Ukraine, 03056

PhD, Associate Professor

Department of Technology of Inorganic Substances and General Chemical

References

  1. Harty, M. A., Forrestal, P. J., Watson, C. J., McGeough, K. L., Carolan, R., Elliot, C. et. al. (2016). Reducing nitrous oxide emissions by changing N fertiliser use from calcium ammonium nitrate (CAN) to urea based formulations. Science of The Total Environment, 563-564, 576–586. doi: 10.1016/j.scitotenv.2016.04.120
  2. Kuprin, O. V., Ishhenko, M. I., Savchenko, M. V., Kuprin, V. P (2009). Pat. 41672. Emul'sijna vybuhova rechovyna „UKRAI'NIT-PP-2B”. No u200902994; Zajavl. 30.03.2009; Opubl. 25.05.2009, Bjul. № 10, 2.
  3. Murillo-Amador, B., Jones, H. G., Kaya, C., Aguilar, R. L., García-Hernández, J. L., Troyo-Diéguez, E. et. al. (2006). Effects of foliar application of calcium nitrate on growth and physiological attributes of cowpea (Vigna unguiculata L. Walp.) grown under salt stress. Environmental and Experimental Botany, 58 (1-3), 188–196. doi: 10.1016/j.envexpbot.2005.08.003
  4. Morales, G. V., Quiroga, O. D. (2012). Modelado Cinético de la Disolución de Hidroboracita en Soluciones de Ácido Nítrico. Información tecnológica, 23 (5), 109–114. doi: 10.4067/s0718-07642012000500011
  5. Gezerman, A. O. (2014). Effects of Calcium Lignosulfonate and Silicic Acid on Ammonium Nitrate Degradation. Journal of Chemistry, 2014, 1–6. doi: 10.1155/2014/426014
  6. Obrestad T., Mutsaers P., Wallestad I. (2015). Pat. 220612 PL. Method for purification of solutions or calcium nitrate alloys and the solution/alloy of calcium nitrate. No 20090416, published: 30.11.2015.
  7. Kumpoviс, S., Leakoviс, S. (2011). Redobrada procesnog kondenzata otplinjavanjem amonijaka u proizvodnji gnojiva KAN. Kemija u Industriji, 60 (10), 505–510.
  8. Rodriguez, M., Zea, H. (2015). Evaluation of a synthesis process for the production of calcium nitrate liquid fertilizer. International Journal of ChemTech Research, 7 (4), 1960–1965.
  9. Nawrocki, A., Olszewski, R. (2006). Pat. WO2006031139 A1. Method of calcium nitrate production. No PCT/PL2005/000054, declared: 22.08.2005; published: 23.03.2006.
  10. Rabie D. R. H., Morris W. R., Eygelaar J. P. G. (2006). Pat. US7029504 B2. Method for producing calcium nitrate granules. No US 10/275,062, declared: 02.05.2001; published: 18.04.2006.

Downloads

Published

2016-08-24

How to Cite

Oliinyk, M., Shestozub А., & Suprunchuk, V. (2016). Technological and kinetic regularities of formation of suspension and its interaction with nitric acid while obtaining calcium nitrate. Eastern-European Journal of Enterprise Technologies, 4(6(82), 49–55. https://doi.org/10.15587/1729-4061.2016.74941

Issue

Vol. 4 No. 6(82) (2016): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

License

Copyright (c) 2016 Mykola Oliinyk, Аnatoliy Shestozub, Vladimir Suprunchuk

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.

A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.