Improvements and modifications in compressed air-drying system: A review

Mechanical Engineering

In recent trend, three utilities are most essential for industrial processes: water, electricity and natural gas. But, there is one utility considered nearly as important as these: compressed air. Instrument air dryers are essential part of the compressed air system in a various chemical plant. These devices and their consociate filters remove moisture and lubricant from the compressed air that supplied to sensitive instruments and controlling actuators. Such devices used for pushing down the dew point temperature of the compressed air, so the air remains dry and contamination free. The problems are related to dryer’s performance and its systems which are directly affects outlet compressed air quality and may results in failure of concerned pneumatic equipment due to high concentration of moisture. To provide safe guard against such problem, it is required to improve performance of dryer and effectively remove moisture from pressurized air. The main objective of this paper is to review briefly the performance of refrigeration air dryer by maintaining inlet temperature of compressed air utilizing outlet air heat. In addition to this, use of additional moisture separator in dryer outlet can helps to remove water particles effectively and can maintain dew point temperature at desired limit.

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