Ms Polished Heat Reactivated Dryer, For Industrial

Theory of operations: Heat reactivated dryer are used when one needs the air of very low dew point. In this design, desiccant is regenerated at the higher temperature with little dry air purge. Due to dry air purge and thermal regeneration, residual moisture loading on desiccant becomes low and this gives low dew points. The drying unit has 2-vessels filled with activated alumina desiccant. One vessel remains in drying cycle for 4-hours while another vessel is simultaneously regenerated at atmospheric pressure. Around 3 to 5% flow of air dryer capacity is used as the purge for regeneration. Electrical heaters are provided in a central finned stainless pipe in drying vessels. Heating cycle is for 2-hours and in this time desiccant temperature increase up to 100 to 150-degree celsius. at this temperature regeneration is complete. Features: A fully automatic unit requiring no attention of the operator. Heaters switch on/off and all valves operation is fully automatic. Low purge air requirement as compared to heat fewer type dryers. Counter-current preheated dry air purge provides maximum removal of adsorbed moisture with minimum gas purge loss. As heating is done desiccant life increases because moisture is removed effectively due to heating.