A Review: Spray Dryer Design And Control System

Abstract

Industries as diverse as farming, biotech, food, textiles, minerals, pharmaceuticals, paper production, polymers, wood, and more all
rely on drying system, which is a significant user of energy. It is also the longest running chemical engineering division ever. Spray
drying is one of the most attractive alternatives for the pharma sector since it meets quality standards for particle size distribution,
residual moisture, bulk density, and form. Recent attention has focused on spraying particles. In this study, we review the design and
concept of spray dryer. Automatic control improves the dryer's functionality and effectiveness. The powder's moisture concentration
indicates its consistency. By adjusting flow rate and primary inlet air drying temperature, we can indirectly manage moisture levels by
maintaining exit air temperature. Dryers with automatic control systems are more productive than those without. This survey also
illustrates the benefits and drawbacks of the various control systems used in spray dryers. Additionally, since the Expert control system
monitors the necessary temperatures in various spaces, this study introduces it in relation to improving the drying process. Future work
on developing the spray dryer with numerous control system configurations may benefit greatly from this study.