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Condensate At Supperheated Steam Line

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#1 Takechi


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Posted 07 March 2021 - 09:36 AM

Dear All expert


Our supper heated steam line, long 4 km have operating pressure 45 barg, temp 480 deg.C. It is too far from saturated temperature.


However, during normal operation(Not start-up period), we found some water condensate at steam trap of these lines many time.


What is possible cause of this issue?


Are there anyone have similar problem as my plant? 


Please share to me.




#2 Pilesar


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Posted 07 March 2021 - 02:13 PM

When steam contacts a surface that is below the saturation temperature, condensation occurs. The inside wall of your pipe is such a surface.

#3 jayari


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Posted 08 March 2021 - 09:59 AM

Just to add to Pilesar's answer, perhaps there is some insulation issue (old, missing, damaged) that is allowing a cold area to exist and allow for condensation. 

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