Sugar is widely used in all parts of the world. However, sugar is extremely hygroscopic, and absorbs moisture very quickly, creating innumerable operational problems during storage and packing.
Brown Sugar or raw sugar is conveyed at below 40% RH level. At the packaging area the recommended temperature and RH level is 20°C and 30%, respectively.
Dew Point of the air is 0°C and the external static pressure to be maintained is 500-1000 pascal depending on the length of the conveyor.
Pre-drying the air used in pneumatic conveying drying ensures that sugar is transported dry into the silos. Furthermore, the same dehumidified air used for conveying can be delivered into the silos and hopper, and will not cause the sugar inside to solidify and improve its quality.