Technology for Porous Ammonium Nitrate Production: Analysis of Drying Machines’ Operating Modes

Abstract

The article is devoted to the development of the technological principlesregarding thefinal drying process of the porous ammonium nitrate (PAN) granules in multistage gravitational shelf dryers. The data on the dryer’s optimal technological operatingmodes are obtained. PAN samples are studied; the regularity of the change in the porous structure of the granule depending on the hydrodynamic and thermodynamic conditions of the dryer is established. Experimental data obtained during the research will be used to create a methodology for the engineering calculation of gravitational shelf dryers.The data for calculating the residence time of particles in the dryer under various hydrodynamic operating modes are obtained. Moreover, the data about the optimal operating conditions of the drying machines at the final drying stage will be used to improve the technology to form porous granules from ordinary ammonium nitrate.