Abstract
The chapter describes the theoretical fundamentals for the final drying of ammonium nitrate granules with the nanoporous structure in multistage shelf units. The computer modeling of the hydrodynamic conditions for the final drying of porous ammonium nitrate (PAN) is demonstrated. The moisture content changing process in the disperse material and a drying agent in the shelf dryer’s workspace during the final drying of PAN is theoretically described. This work is also aimed to develop the mathematical model, which determines the moisture characteristics of the disperse material (PAN) and the drying agent, and to perform the optimization calculation, adjusted for construction peculiarities of the shelves. Based on the model, the calculated data of the moisture field in the disperse material and the drying agent are obtained. The results of studying the nanoporous structure morphology in PAN granules obtained in different periods of the drying process in a gravitational shelf device are presented.
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Acknowledgements
This research work had been supported by the Ministry of Science and Education of Ukraine under the project “Technological bases of multistage convective drying in small-sized devices with utilization and heat recovery units,” project No. 0120U100476 and by the Cultural and Educational Grant Agency of the Slovak Republic (KEGA), project No. KEGA 002TnUAD-4/2019.
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Artyukhova, N.O., Krmela, J., Krmelova, V. (2021). Theoretical Basics of Final Drying of Ammonium Nitrate with Nanoporous Structure in Gravitational Shelf Dryers. In: Fesenko, O., Yatsenko, L. (eds) Nanomaterials and Nanocomposites, Nanostructure Surfaces, and Their Applications . NANO 2020. Springer Proceedings in Physics, vol 263. Springer, Cham. https://doi.org/10.1007/978-3-030-74741-1_17
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