Gas Dehydration

 

Glycol dehydration has stood the test of time as the preferred way to remove water from natural gas. The design of glycol systems (TEG, DEG, MEG) is unique for each application as the overall package design will vary to meet the specified moisture content of the gas at the process conditions.

 

Glycol dehydration units or TEG dehydration units are the most economical type of natural gas dehydration where dew points depressions of 60° to 120°F are required. Triethylene glycol (TEG) is the most common type of glycol use for gas dehydration. In the glycol dehydration process TEG is pumped to the top of a contactor tower where it is flow countercurrent with wet gas flowing up the tower, utilizing internal high efficiency structured packing for larger gas flows, or trays for smaller tower sizing, for efficient gas/liquid contacting. The TEG adsorbs water from the wet gas and is passed to the glycol regeneration unit where, very simply, adsorbed gases are flashed off and the water is removed from the reboiler by heating the wet glycol to around 400ºF at atmospheric conditions. The regenerated TEG is then pumped back to the contactor tower inlet

 

KYS Energy also supplies MEG regeneration packages to recondition MEG used for hydrate inhibition processes.

 

KYS Energy custom designs and builds each system as a complete turn-key package with particular emphasis given to:

 

• Discharge gas moisture content

• High gas dehydration capacity

• Minimum glycol losses

• Minimum power consumption

• Optimum plant efficiency and design integrity

• Compliance with SHEQ requirements

• Environmentally conscientious design