Gas Treatment

Gas dehydration  processes remove  water vapor from  natural gas.  Removing water vapor prevents hydrate formation and corrosion and maximizes pipeline efficiency. The choice of absorbent or adsorbent systems is on a case by case basis depends on the level of dehydration required, the location of operation and the flow rate and inlet feed composition.

Gas heaters can be used to raise the gas stream temperature above that at which hydrate formation may occur. Heat transfer can be done either directly or indirectly through an additional medium.

Dew Point Control Systems recover valuable marketable hydrocarbon liquids, thus delivering more revenue while preparing the gas to meet pipeline specifications. Dew point control is necessary when raw gas lines are constrained in liquid content. As the liquid reduces, the gas throughput causes slugging and interferes with gas metering.

Gas entering a treatment facility can contain solids and liquids, either as particulates or as a distinct phase. The solids and liquids will need to be removed from the gas phase prior to the gas being sent onwards for additional processing and purification.

Most gas processing facilities have a gas treating step to remove the acid gases Hydrogen Sulphide and Carbon Dioxide. Although many natural gases are free from objectionable amounts of H2S and CO2, substantial quantities of these impurities are found in both gas reserves and production throughout the world.