Glycol Dehydration

Written By Aline Medeiros

Simplified Glycol Dehydration Process Flow Diagram

Glycol dehydration allows the removal of water vapour that is present in a natural gas stream.  The removal of water vapour will achieve the following:

Prevention of hydrates

Lower the dew point of the gas

Reduce corrosion in pipelines

Increase pipeline efficiency by reducing the amount of free water allowed to accumulate in low spots

Typical pipeline contracts specify dry natural gas as 4 lb H2O/mmscf. It is common practice to design for 2 lb H2O/mmscf.

Aline Medeiros
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