• Mellcon Engineers Private Limited

Air Dryer, Heat Of Compression Type

Mellcon Engineers has developed energy saving heat of compression type Air Dryers to replace the conventional heatless and heat regenerated type air dryers. This is a breakthrough in drying technology. While compression, a lot of energy is converted into heat, which is stored in the compressed air and is normally wasted in water cooled after cooler. In heat of compression dryer this energy is used to regenerate the desiccant, thus eliminating the need of heaters required in case of conventional air drying systems, e.g., split-flow no-purge-loss type and blower heat reactivated type air drying plants. Energy consumption wise the system is even better than refrigerated type air dryers while the dew point is much better than that of refrigerated type air drying plants. Brief description: the hot air from the compressor at 120°C or more is used directly for regeneration of the desiccant. After regeneration, this air is cooled down to 40ºC and then it is dried in second tower. Thus the use of heaters is eliminated. In the 5+5 hrs cycle the hot air is fed for regeneration for 3.5 hrs and for balance 1.5 hrs a changeover takes place where the air is first cooled in cooler, then dried and before going to the outlet, cools the regenerated desiccant bed thus bringing it down to ambient temperature. This cycle is reversed for the next 5 hours where the adsorber drying the air in previous cycle goes for regeneration and vice versa. There is no power consumption in this type of air dryers and the dew point is also better than the refrigerated type of dryers, whereas, the power consumption is almost negligible. This type of dryer can be used only for oil free compressor.