1. Drying temperature: Heat is the key to opening the synergy between water molecules and hygroscopic polymers. Above a certain temperature, the attraction between water molecules and polymer chains is greatly reduced, and the water vapor is carried away by the dry air.
2. Dew point: In the dryer, the moist air is first removed to make it contain very low residual moisture (dew point). Then, reduce its relative humidity by heating the air. At this time, the vapor pressure of the dry air is lower. By heating, the water molecules inside the sludge get rid of the bondage and diffuse to the air around the sludge.
3. Airflow: The dry hot air transfers heat to the sludge in the drying silo, removes the moisture on the surface of the sludge, and then sends the moisture back to the dryer. Therefore, there must be enough air flow of the infrared carbon sulfur meter to heat the resin to the drying temperature and maintain this temperature for a certain period of time.
4. Time: In the air around the sludge, it takes a certain amount of time for the absorption of heat and the diffusion of water molecules to the surface of the sludge. Therefore, resin suppliers should specify the time it takes for a material to dry effectively at the proper temperature and dew point.
