Abstract
The article studies the final drying stage in the porous ammonium nitrate (PAN) production. Based on the analysis of the ammonium nitrate, authors propose to improve the scheme for the PAN production by introducing the final drying stage after humidification and heat treatment of PAN in a vortex granulator. The analysis of literature proposes a new design for the drying unit—a gravitational shelf dryer with vertical sectioning of the workspace. There is a theoretical and experimental description of the PAN granule heating and dehydration processes in a dryer. The studying results of the PAN granule surface morphology after the final drying stage are presented. Comparative indicators of the quality of PAN granules, obtained with using and without using the final drying stage, are given.
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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, by the Cultural and Educational Grant Agency of the Slovak Republic (KEGA), project No. KEGA 002TnUAD-4/2019 and by the project “Advancement and support of R&D for “Centre for diagnostics and quality testing of materials” in the domains of the RIS3 SK specialization“, code NFP313011W442.
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Artyukhova, N.O., Krmela, J. & Krmelova, V. Experimental–industrial implementation of the technology for producing nanoporous layers on ammonium nitrate: the final drying stage in multistage devices. Appl Nanosci 12, 1235–1244 (2022). https://doi.org/10.1007/s13204-021-02075-0
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DOI: https://doi.org/10.1007/s13204-021-02075-0