Glycol Dehydration is a process in which a liquid glycol directly contacts a natural gas stream and absorbs water in a contact tower or absorption column. The common process for dehydrating natural gas is to contact the gas with a hygroscopic liquid such as one of the glycols. This is an absorption process where the water vapors in the gas stream become dissolved in a relatively pure glycol liquid solvent stream. This is relatively inexpensive as the water can be easily boiled out of the glycol by the addition of heat. This step is called regeneration or reconcentration and enables glycol to be recovered for reuse in absorbing water with minimal loss of glycol. The process works on the basis of glycol's high affinity for water.