Compressed air contains moisture, foreign particles and oil mist. These constituents of compressed air are harmful to the life of pneumatic components like valves or air cylinders. Hence this is extremely important to prepare the compressed air before using the same for various industrial applications. The preparation of compressed air is done by air preparation equipment.
Preparation of compressed air starts immediately after it is produced by the compressor by using aftercooler to reduce its temperature. Aftercooler can be either air cooled or water cooled. Important air preparation equipment is Air dryer. Air dryer removes the moisture from the compressed air. Air dryer can be either refrigerated or heatless. Refrigerated air dryer is widely used in the manufacturing industry. Air preparation equipment is water separator. Water separator removes moisture present in condensate form in compressed air. Some of other air preparation equipments are main line filter, mist separator, micro mist separator and odor removal filter.