Numerical simulation of spray dryer to investigate the effects of spray angle in the E-PVC drying process

Peyman Akbari¹ Salem Mehrzad² Farzad Jamaati³ Masoud Dorfeshan⁴

1) Master Student of Mechanical Engineering - Energy Conversion, Shahid Chamran University of Ahvaz, Iran -
2) Assistant Professor of Mechanical Engineering, Shahid Chamran University of Ahvaz, Iran -
3) Master student of Mechanical Engineering - Energy Conversion, Shahid Chamran University of Ahvaz, Iran
4) Assistant Professor of Mechanical Engineering, Behbahan Khatam Alanbia University of Technology, Iran

Publication : 3rd International Congress On Engineering, Technology and Innovation(eticong.com/3rd)
Abstract :
In the present study, the operation of the emulsion-PVC spray dryer on the Arvand Petrochemical Company has been investigated using numerical simulation. The simulation is based on computational fluid dynamics and using the standard k-ε turbulence model. Using the Eulerian-Lagrangian view in both cases with spraying and without spraying, the distribution of velocity, temperature, density, moisture content of particles, as well as tracking the movement of droplets sprayed in the number of different active nozzles and spraying angles are also indicated. The results show that the difference between the inlet and outlet air temperature with 20 active nozzles is approximately 50 °C, the outlet air density is 0.848 kg/m3, the final density of the powder is 1.0 kg/m3, and the final moisture content of the powder is in the range of 0.1-0.3 %. By increasing the number of nozzles to 16, the output temperature decreases. By increasing the spray angle to 40 degrees, the final moisture content of the powder decreases. The results show the high effect of spray parameters such as inlet air temperature, active nozzle, and nozzle spray angle on moisture content and distribution of particle temperature. By controlling these parameters, the spray dryer process can be optimized.
Keywords : Spray Dryer Emulsion PVC Computational Fluid Dynamics (CFD) Discrete Phase Model (DPM)