Offshore TEG Gas Dehydration - What is the effects of Inlet Gas Temperature

[DoraeS]

Hi,
I would like to know what is the effects of inlet gas temperature on TEG Glycol Contactor performance?
I understand that the TEG should be circulated at a range of 15 - 50 degC as per GPSA, but is there a limitation on inlet gas temperature and, what is the effects?
Thanks.

 

[MortenA]

The TEG will quickly cool/heat to the gas temperature because in most cases the gass mass is much higher than the TEG mass. So essentially you want the gas temperature to be closed to your require teg temperature. Usually the TEG is a few degrees warmer than the gas, i think this reduces foaming tendiencies (maybe due to less HC liquids KO in TEG phase). The impact of temperature is transport properties, TEG viscosity and TEG losses to gas phase.

Best regards, Morten