How can Sorbents be used to Dry Air?
Sorbents are solid or liquid materials which have the property of extracting and holding other substances (usually water vapour) brought into contact with them. Sorbents can be classified into two general categories. * Absorbents * Adsorbents Absorbent : A sorbent which changes either physically, chemically or both during the sorption process. Lithium Chloride is an example of solid absorbent. When water is absorbed on this material it changes to hydrated state. In liquid sorption dehumidification system, the air is passed through sprays of a liquid sorbent such as lithium chloride or glycol solution. The sorbent in an active state has a vapour pressure below that of the air to be dehumidified and absorbs moisture from the air stream. The sorbent solution during the process of absorption becomes diluted with moisture which during regeneration is given up to an air stream in which the solution is heated. Typically absorbent used is lithium chloride in either liquid form or as solid crys
