| GLYCOL DEHYDRATION UNIT The DPS Delta glycol dehydration Unit removes water vapour from a gas stream to allow further treatment and transportation without risk of hydrate formation or corrosion in the presence of H2S or CO2 by using ethylene glycol as a liquid desiccant.  PROCESS DESCRIPTION Wet gas containing HC droplets enters the integral scrubber section of the contactor tower where free liquid is removed. Saturated gas flows up through the mass transfer section of the tower mixing with the downward flowing lean glycol. Dry gas will exit the tower via a demister pad and the rich glycol goes to a coil within the still column mounted on the reboiler. The condensing vapours provide reflux for the still column.  The warmed rich glycol flows via the lean/ rich glycol exchanger to the Flash Drum to remove entrained gas and separate HC liquid from the rich glycol. The rich glycol then passes through a solids filter to remove particulates and a carbon filter to remove traces of aromatic compounds. After filtering the rich glycol is heated by the lean glycol from the Surge Vessel. Lean glycol flows from an integral gas stripping column via the Surge Drum to the Lean/ Rich Glycol Exchanger before flowing to the Lean Glycol Pump which sends the glycol under high pressure to the Glycol Contactor via the Lean Glycol Cooler. Please click on the image below to view a larger version.  |
Dehydration Unit
