Our triethylene glycol (TEG) dehydration systems are among the most widely used in the oil and gas industry because of low operating costs and relatively low capex. Glycol dehydration systems are not only efficient at removing water from a natural gas stream, they also remove benzene, toluene, ethylbenzene, and xylene (BTEX) and other volatile organic compounds (VOCs).
In natural gas systems, water vapor needs to be removed to reduce pipeline corrosion and eliminate line blockage caused by hydrate formation. The water dewpoint needs to be below the lowest pipeline temperature to prevent free-water formation.
Using amine treatment to remove acid gases results in water-saturated gas that must be dehydrated before entering the pipeline. Most product specifications require the maximum quantity of water in the gas to be 4 to 7 lbm/MMcf.