Physico-сhemical nanomaterials science
Thermodynamic calculation of vortex granulator operation for producing of ammonium nitrate with nanoporous structure
A.E. Artyukhov1, A.V. Lytvynenko2, J. Krmela3, V. Krmelova4
1 Processes and Equipment of Chemical and Petroleum Refinery Department, Sumy State University, Rymskogo-Korsakova str.,  2, Sumy-40007, Ukraine. 
E-mail: a.artyukhov@pohnp.sumdu.edu.ua 
2 Processes and Equipment of Chemical and Petroleum Refinery Department, Sumy State University, Rymskogo-Korsakova str.,  2, Sumy-40007, Ukraine. 
E-mail: a.lytvynenko@pohnp.sumdu.edu.ua 
3 Department of Numerical Methods and Computational Modeling, Alexander Dubcek University of Trencin, 491/30, I. Krasku, 02001, Puchov, Slovak Republic
E-mail: jan.krmela@fpt.tnuni.sk 

4 Department of Materials Technologies and Environment, Alexander Dubcek University of Trencin, 491/30, I. Krasku, 02001, Puchov, Slovak Republic
E-mail: vladimira.krmelova@fpt.tnuni.sk 

The work is devoted to the creation of a thermodynamic optimization method for calculating of a vortex granulator. An algorithm of determining temperature fields in the working space of a vortex granulator which is based on the data 1, a series of thermal imaging studies and the results of computer simulation is proposed. During the creation of an optimization calculation algorithm, the change in the nanoporous structure of the ammonium nitrate granule in the specified temperature ranges and the intensity of motion of the fluidizing agent was taken into account.
An optimal thermodynamic range (main modes) of the vortex granulator work which enables to obtain NH4NO3 granules with branchy net of pores with required size on the surface of the sample and inside it is proposed.
This work was carried out under the project «Small-scale energy-saving modules with the use of multifunctional devices with intensive hydrodynamics for the production, modification and encapsulation of granules », state registration No. 0119U100834.

1.	Artyukhov A.E., Sklabinskyi V.I. Investigation of the temperature field of coolant in the installations for obtaining 3d nanostructured porous surface layer on the granules of ammonium nitrate // Journal of Nano- and Electronic Physics.- 2017.- 9,  No. 1.-P. 01015-1 - 01015-4.