Adsorption dryers can only be energy efficient if they contain premium desiccant material. The desiccant used in Pneumatech adsorption dryers is carefully selected from a wide range of European and North-American suppliers, based on following key selection criteria:
Different desiccants have different levels of water attraction. The greater the attraction, the lower pressure dew point is possible. However, the greater the level of water attraction of the desiccant, the more purge is required to regenerate it. Therefore we use molecular sieves at the top of the vessels in our -70°C/-94°F variants, while using silica gel (heat regenerated) or activated alumina (heatless) in our -40°C/-40°F variants. Molecular sieves have the tendency to adsorb moisture at low relative humidity and have thus the best performance at the low PDPs.
Some desiccants show fantastic static performance, but have a bad dynamic performance; meaning that they degrade after a couple of months because of pressure, temperature or air humidity variations. Pneumatech adsorption dryers are not only equipped with the most durable desiccant material in the market, they are also overfilled to cope with this aging affect or with temporary overloads.
Compressed air will always contain some level of moisture depending on the environment and ambient temperature surrounding the compressor. Using the air while it contains moisture can cause a number of issues for your tools, other equipment and ultimately your business.
Air dryers are used downstream of an air compressor to rid the compressed air of any moisture or humidity before it reaches your application or final product. Using air dryers is imperative in many applications such as the food/beverage industry, electronics manufacturing and spray painting in the automotive industry.