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Category: Glycol Dehydration

Glycol Dehydration

Glycol Dehydrator – Dehydration Capacity VS Temperature

Posted on November 7, 2009

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…

Glycol Dehydration

Flooding Dehydrator Tower – Plugged Tray

Posted on November 1, 2009

Drying towers in natural gas service can become rapidly fouled with drilling mud or formation and frac sand. The sand appears in the wellhead gas…

Glycol Dehydration

Flooding Dehydrator Tower – Fouling vs Flooding

Posted on November 1, 2009

A distillation column can flood due to dry damage, undersized liquid downcomers, high liquid level in the bottom of the tower, foulcommonly encountered in natural…

Glycol Dehydration

Glycol Dehydrator – Flooding Dehydrator Tower

Posted on November 1, 2009

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…

Glycol Dehydration

Glycol Dehydrator – Leaking Feed-Effluent Exchanger

Posted on November 1, 2009

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…

Glycol Dehydration

Glycol Dehydrator – Glycol Regeration Temperature

Posted on November 1, 2009

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 Dehydration

Glycol Dehydrator – Indication of Reduced Glycol Circulation

Posted on October 25, 2009

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…

Glycol Dehydration

Troubleshooting At The Dehydration & Compression Station

Posted on October 25, 2009

Natural gas transported through common carrier pipelines must meet a moisture specification of 7 pounds of water per MMscf. Gas is usually dried to meet…

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