Sulfur-free yam drying is performed in a dryer that precisely controls the temperature and humidity of the circulating air, offering a high degree of automation. Once the drying program is manually set, the machine operates autonomously, eliminating the need for dedicated personnel, saving labor and reducing drying costs. So, how can you set up a sulfur-free yam drying process to ensure yam quality? Let's explain.

1. Initial Drying: Control the temperature to 40°C for 3 hours.

2. Slowly Increase the Temperature. During this drying and dehumidification phase, the temperature is maintained between 45°C and 55°C. The yam slices in the dryer are kept at a low temperature and high humidity. As the temperature rises, moisture within the slices begins to evaporate to the surface. Air circulation promptly removes the moisture from the surface, condensing it into water and draining it outside the drying room. A suitable drying time for this phase is 5 hours.

3. High-intensity heating and dehumidification phase: As the temperature remains in the medium-temperature, medium-humidity range of 55-65°C, moisture evaporates from the drying chamber and is removed by the dehumidification system. This phase lasts for 6 hours.

4. Continuously increasing the temperature, moisture is expelled, and the yam is dried. When the temperature parameters are adjusted to a higher value, and the drying time is approximately 3 hours, the moisture content of the slices is below 10%, indicating that the yam slices are dried.

Guoxin's sulfur-free yam dryer is easy to operate. The dried yam slices are evenly spread on trays, which are then placed on a cart and transported to the dryer for neat arrangement. An air-to-air heat pump then generates heat to heat the dryer interior, effectively drying the yam. Accurately set the required drying parameters, including temperature, humidity, drying time, and drying mode, to maintain the optimal drying environment for the yam, thus ensuring high quality.

Using a sulfur-free yam dryer offers fast drying speeds, cleanliness, and sanitation, allowing for higher profits when selling on the market. If you also require a sulfur-free yam dryer, please contact us!