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Compressor Suction Temperature


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#1 Sham85

Sham85

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Posted 29 November 2016 - 12:42 PM

Hi,
I have a question please. I deal with a gas its dew point -25 c and hydrate formation at suction pressure is -18 c.
The question is it possible to enter the gas at -10 c to the compressor, because there is no possibiliy to form hydrate or condensate at this temperature and pressure.
Your quick response is highly appreciated.

#2 ankur2061

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Posted 29 November 2016 - 01:10 PM

Hi,

 

The  rule of thumb is to operate natural gas systems at least 10 deg C above the hydrate formation temperature. If that is not possible, you can inject a hydrate inhibitor such as methanol or MEG upstream of the compressor suction scrubber . Hydrate inhibitors act to depress the hydrate formation temperature thus allowing operation at low temperatures.

 

Regards,

Ankur.



#3 Sham85

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Posted 29 November 2016 - 02:10 PM

Many thanks Ankur, you mean there is no problem to enter the gas to compresso at temperature -8 c as the hydrate formation is -18 c, i.e. there is no other consedrations related to compressor suction temperature.
Regards,

#4 ADITYA.DUBEY

ADITYA.DUBEY

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Posted 01 December 2016 - 06:20 PM

Hi

 

Make sure,after compression the gas doesn't get cooled off much.It must remain atleast  10 Deg C above the hydrate formation temperature.

Because after compression,hydrate formation temp will also increase with the increase in discharge pressure.

 

Regards

Aditya






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