Tag: uniform drying

Drying of bulk material can be a tricky and interesting process, simply because of the volume and number of material is larger. In order to provide an optimal drying process, it is important to understand the nature of the material to be dried. Some material may require gentle mechanical and thermal handling. One example of the material is bakery grist (blend of wheat or grains). This is a pre-processed dough-like-mass consist of coarsely ground cereals, intended for baking whole-meal bread. When entering the dryer, it is quite pasty and sticky. The dryer-cooler (figure 1) is expected to lower the moisture down to around 10%. The drying temperature must not exceed 50°C in order to preserve the nutritive value.

Besides energy consumption, the drying process will change the color, texture, odor, and other properties of solid products. Hence it is of the utmost importance for a dryer to dry effectively with low energy consumption. The carousel dryer is developed to dry the food with small space requirement, quick product change, lower energy requirement, lower air volume requirement, gentle tumbling across the drying deck, and uniform moisture.