Tag Archives for glycol dehydrator

Glycol Dehydrator – Dehydration Capacity VS Temperature

Three process requirements must be met for gas to be dried in a standard glycol dehydration unit: 1. The gas velocity through the contactor tower must not be great enough to entrain glycol into the dried gas. Theoretically, the entrainment … Continue reading

07. November 2009 by Jack
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Glycol Dehydrator – Flooding Dehydrator Tower

The field supervisor’s first indication of a flooded contactor tower is usually a report of excessive glycol loss. A check of a lowpoint bleeder on the gas pipeline downstream of the tower will show glycol. After refilling the glycol reboiler, … Continue reading

01. November 2009 by Jack
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Glycol Dehydrator – Leaking Feed-Effluent Exchanger

The hot glycol from the reboiler is cooled by heat exchange with the wet glycol from the contactor. This heat transfer typically takes place in a double-pipe or plate-type exchanger. On one of the double-pipe heat exchangers, I noticed that … Continue reading

01. November 2009 by Jack
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Glycol Dehydrator – Glycol Regeration Temperature

The gas exiting the top of the contactor in Figure 6-1 can be assumed to be in equilibrium with the reboiled—i.e., dry—glycol. The higher the glycol reboiler temperature, the dryer the glycol. The dryer the glycol, the dryer the treated … Continue reading

01. November 2009 by Jack
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Glycol Dehydrator – Indication of Reduced Glycol Circulation

The first oddity I noticed was the noise from the vents associated with the individual reboilers. As Figure 6-1 shows, the expanding gas, used to drive the glycol pumps is also used as fuel to reboil the glycol. The excess … Continue reading

25. October 2009 by Jack
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Gas Dehydrator

Removing most of the water vapor from the gas is required by most gas sales contracts, because it prevents hydrates from forming when the gas is cooled in the transmission and distribution systems and prevents water vapor from condensing and … Continue reading

21. August 2009 by Jack
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