Waste heat regenerative dryer is a new type adsorption dryer, neither belongs to the regenerative heat, also don’t belong to no heat regenerative, and belongs to the temperature swing adsorption, is the use of high temperature air compressor exhaust heat regeneration desiccant, adsorbent is completely regenerate, even in low pressure 0.35 Mpa working condition of use, as long as the compressor load rate of not less than 70%