A vacuum dryer is a type of drying equipment that removes moisture from materials by creating a low-pressure environment. This process lowers the boiling point of water, allowing it to evaporate at lower temperatures. Vacuum dryers are commonly used in industries such as pharmaceuticals, food processing, and chemicals to preserve the quality of heat-sensitive products. These dryers typically consist of a sealed chamber where the material is placed, along with a vacuum pump that removes air. The reduced pressure helps to speed up the drying process while minimizing oxidation and degradation, making vacuum dryers an efficient choice for delicate materials.