... air at the dryer inlet to the desired dew point.B, 30% extra desiccant provide to compensate for natural bed aging, ensure ... carry off moisture, minimizing the amount of purge air required.B,Drying and purging in counter flow arrangement, energy not wasted ... won't fluidize desiccant, making good use of the desiccant. B,Rationalizing system, remove oil and heavy contaminants before flowing into ...