The glycol dehydration unit employs the use of triethylene glycol as a desiccant to remove water from natural gas. Packed or tray towers are packaged with a glycol regenerator to obtain maximum capacity and high dewpoint depressions. The towers are designed to provide maximum gas-glycol interaction allowing gas to dry to a guaranteed water content of less than 6 pounds per million cubic feet. Water removal prevents formation of gas hydrates and reduces corrosion in the pipelines. It also increases pipeline efficiency by reducing liquid accumulation.

Wet glycol is heated and passed to a low-pressure glycol flash separator, which allows the release of the entrained solution gas which is necessary to power the glycol pump and reboiler. Liquid hydrocarbons are separated and discharged before entry into reboiler. The reboiler heats glycol to between 350° and 400° F. to remove enough water vapor to reconcentrate the glycol to 99.5% or more. Glycol is cooled during transport to tower, and the cycling operation continues.

Glycol dehydration units are designed and sized for each production specification. Standard accessories and components include removable firetube with flame arrestor burner, removable smokestack, removable packed still column, thermostat with fuel gas control valve, high-temperature shutdown with manual reset, thermometer with thermowell, burner and pilot light assembly with shutoff valves, fuel gas regulator, fuel gas pressure gauge, liquid level gauge assembly, drain connection with plug, drain connection with drain valve, glycol filter, glycol strainer with bleed-off valve, high-pressure check valve on pump discharge, completely trimmed and interconnect piped.