The natural gas dehydration process

Natural gas from wells invariably contains humidity. Gas also becomes wet in the sweetening unit of a gas processing facility when it comes into contact with the aqueous solution of a solvent, such as methyl diethanolamine (MDEA), used to remove the acid gases contained in the raw gas. Water must be removed from natural gas because its possible condensation may result in several problems: Corrosion of pipelines in the presence of CO2. CO2 dissolves in condensed water, forming carbonic acid (H₂CO₃), which dissociates in bicarbonate (HCO₃–), carbonate (CO₃²-) and hydrogen (H+) ions. The latter is reduced at the steel surface to form H₂ (2H+ + 2e- → H₂). The two electrons needed for reducin