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Flare System In Gas Processing Plant

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#1 Max3008


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Posted 05 September 2014 - 08:31 AM

Dear all,

As far as I know, a flare system usually includes flashback seal drum and flashback prevention section as in picture below:

However, the flare system in some gas processing plants I know does not include any flashback seal drum or flashback prevention section. It just includes K.O Drum and there is a "annular slot" in the flare stack. I wonder if it is safe and the "annular slot" could play the role as a flashback prevention section? 

Thanks in advance,


Edited by Hoang Nguyen, 05 September 2014 - 08:33 AM.

#2 fallah


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Posted 05 September 2014 - 08:51 AM



Nowadays there are other facilities than seal drum for flashback prevention through the flare tip such as velocity seal along with a continuous purge gas system which can create a situation to do the job safely. Continuous purge gas system create a reliable positive pressure that its interruption may even lead to plant shut down... 

Edited by fallah, 07 September 2014 - 12:52 AM.

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