Thermodynamic Calculation of Vortex Granulator Operation …
211
Fig. 4 The computer modeling results regarding the drying agent temperature field in the vortex
granulator workspace
The model for calculation of the granule heating and drying kinetics proposed in
the first section of the chapter, and the results to determine the drying agent’s temperature field in a vortex granulator, let to carry out the thermodynamic calculation of
the nanoporous structure obtaining process in the PAN granule. The received data
of the temperature field are introduced to the calculation formulas in order to define
the required time of the heat treatment process of PAN granules. Further, this paper
presents constructive solutions regarding the methods to stabilize the drying agent’s
vortex flow, as well as the research findings of the nanoporous granule structure
(nanoporous structure obtained at different twisting velocities of the drying agent).
4 Methods to Stabilize the Drying Agent’s Vortex Flow:
The Microstructure of PAN Granules
Figure 5 demonstrates the construction of the gas-distributing unit in the vortex granulator without stabilization and with the stabilization of the drying agent’s flow. The
introduction of additional knots in the vortex granulator’s construction practically
does not complicate the production of the device and does not increase its price.
However, as you can see below, such constructive solutions have a significant effect
on the quality of the nanoporous surface in the PAN granules.
The nanoporous surface microscopy is performed in two steps. At the first stage,
the effect of the temperature field (at different degrees of the drying agent’s twisted
flow in the same range as in Fig. 2) on the nanoporous structure is investigated. The
211
Fig. 4 The computer modeling results regarding the drying agent temperature field in the vortex
granulator workspace
The model for calculation of the granule heating and drying kinetics proposed in
the first section of the chapter, and the results to determine the drying agent’s temperature field in a vortex granulator, let to carry out the thermodynamic calculation of
the nanoporous structure obtaining process in the PAN granule. The received data
of the temperature field are introduced to the calculation formulas in order to define
the required time of the heat treatment process of PAN granules. Further, this paper
presents constructive solutions regarding the methods to stabilize the drying agent’s
vortex flow, as well as the research findings of the nanoporous granule structure
(nanoporous structure obtained at different twisting velocities of the drying agent).
4 Methods to Stabilize the Drying Agent’s Vortex Flow:
The Microstructure of PAN Granules
Figure 5 demonstrates the construction of the gas-distributing unit in the vortex granulator without stabilization and with the stabilization of the drying agent’s flow. The
introduction of additional knots in the vortex granulator’s construction practically
does not complicate the production of the device and does not increase its price.
However, as you can see below, such constructive solutions have a significant effect
on the quality of the nanoporous surface in the PAN granules.
The nanoporous surface microscopy is performed in two steps. At the first stage,
the effect of the temperature field (at different degrees of the drying agent’s twisted
flow in the same range as in Fig. 2) on the nanoporous structure is investigated. The