1 reply to this topic

[punjung]

Dear expert,


I want to ask about glycol demand calculation per mmscfd wet gas on dehydration unit, please help me. please give also reference beside GPSA and steward&arnold.

Thanks,


Regards,

Punjung

[Art Montemayor]

Punjung:

You fail to tell us just exactly what you want the information for and how it will be used. I am forced to have to assume that you are looking for Glycol consumption data because you are writing the commissioning, startup, and operation manuals for a new dehydration unit. You also fail to tell us the specifics of the (Glycol?) dehydration unit you have in mind. Without specific details and basic data, we are forced to generalize and conjecture - which is not much help. The bottom line is that if you don't help us with detailed, specific information, we can't help you.

There are no calculations for the loss / entrainment / vaporization / leakage / decomposition of Diethylene or Triethylene Glycol - at least not to my knowledge.

Every evidence, statistic, data, or recommendation has been based on empirical information obtained in actual, field dehydration units. And that's good. If the data was collected in a good, accurate, and detailed manner it should form a good idea of what to expect in Glycol consumption from a new or designed unit.

However, much of the data I've seen and used has little or no reference as to size of unit, operating pressures & temperatures, type of contactor and regeneration used, etc., etc. Therefore, you have to rely on the empirical data with some concern as to whether it applies to your design or not - and with what accuracy. The best data is that collected by companies operating many dehydration units - and of different design. If you are able to obtain such data, that is the best way to predict Glycol consumption.

I don't know who you mean by "steward&arnold". Are they authors, operators, or designers?