Effect of methanol on gas dehydration

Asked by wangroc 7 years, 6 months ago | 2 Answers

Produced gas contains significant amount of methanol during startup used for Hydrate remidiation. Could someone please share some info on effect of methanol on gas dehydration (TEG) unit?

2 Answers

RichS29 7 years, 6 months ago

Methanol injected at wellhead as hydrate inhibitor can pose the following problems to the glycol dehydration unit:

  • add additional reboiler heat duty
  • Slugs of liquid methanol can cause flooding in the absorber
  • Methanol will add to the still vapor load which can cause flooding and hence cause glycol losses by entrainment
  • Methanol vapor vented with water vapor from regeneration unit is hazardous and should be removed or vented to a lower non hazardous concentrations

odadmin 6 years, 4 months ago
Methanol vapor vented to the atmosphere with the water vapor from regeneration system is hazardous.

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