Air Dryer
The Use of Dryers on Adsorption Drying Process
What is the adsorption drying process? A number of chemical and industrial procedures need total absence of moisture or humidity, without which the particular process can not be performed. Companies have to invest large sums of money to create a special humidity or wetness totally free environment. While heating clothes dryers are still utilized to regulate the humidity percentage, the majority of the production processes today utilize more advanced methods of removing humidity. An effective way is to utilize unique chemical agents, which have a tendency to soak up moisture. Generally, when such representatives are made use of, the water vapor molecules bound to the drying medium, thus transferring the wetness to the agent. The absorbents are normally solid, and granular or spherical in shape, with a perforated structure to increase the area of the medium. Such hygroscopic representatives are crucial, as they help to decrease the production cost. Additionally, the representatives can be regularly rejuvenated by utilizing cost effective procedures, which additionally adds on to the earnings. Such chemical representatives are known as desiccant air dryers. Distinction between adsorption and absorption Adsorption is a phenomenon in which atoms, particles, or ions adhere from a fluid, gas, or a dissolved solid on to a particular surface area. The procedure forms a thin layer of the adsorbate on to the surface of an adsorbent. In the absorption procedure, a fluid "absorbate" is progressively dissolved by a solid or liquid representative "absorbent". Adsorption is essentially a surface area based process, while absorption takes place in the entire volume of the material. The clothes dryers can be quickly classified as: • • •
Heatless dryers Deliquescent dryers Membrane clothes dryers
Heatless dryers Desiccant air dryers, also referred to as "heatless" dryers, are more effective compared to their standard counterpart drying products. During the dehumidification procedure, highly compressed air is gone through a specific pressure vessel which is lined with triggered alumina, silica gel, or a molecular screen. As the compression level increases, the air inside the vessel condenses and begins cooling, due to which dewdrops are developed. The drying representative adsorbs the dewdrops, hence eliminating the moisture from the air. The drying representative does not liquefy in wetness - it simply gathers and retains it.
Air Dryer
Functions: • • •
Clean and dry air Energy efficient Significant expense advantages
Deliquescent dryers The process remains more or less the same as heatless dryers. A deliquescent dryer typically consists of a customized pressure vessel, which is full of a hygroscopic agent or media that can absorb water vapor. Air is compressed and passed along, on, or through the dryer, and the dewdrops are absorbed by the clothes dryer. Nevertheless, in case of deliquescent clothes dryers, the chemical agent or media progressively liquefies, or deliquesces, and forms a solution in the base of the vessel. This fluid has to be regularly drained from the pressure vessel, and new media presented. The media is normally in a tablet form, or briquette type. Features: • • •
No electrical power required Low pressure drop Avoids airline freeze-ups and jams
Membrane clothes dryers While the above 2 procedures are comparable in using a hygroscopic agent, this particular procedure is likewise rather similar to them, nevertheless there is a subtle distinction in how the air is dehumidified by the chemical representative. The compressed air is at first filtered utilizing a good quality coalescing filter. The filter removes melted vapor, or water, in addition to oil, and particulate matter from the air. The compressed air is then passed through minute fibers in the membrane matter, and all at once a jet of dry air is subjected on the surface of the membrane to sweep out the vapor. Functions: • • •
Does not need electrical power Decreases energy consumption and expenses Compatible with humidity as low as -60 ° c
A desiccant air dryer is a really helpful and cost effective technique in lots of industrial and production procedures. Its appeal and use is enhancing due to the evident advantages the technology proffers - ecological friendly, low production costs, and minimal upkeep. Sources: The Use of Dryers on Adsorption Drying Process The Green Book (www.thegreenbook.com) http://www.thegreenbook.com/products/air-dryers/
Air Dryer