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Flare Header Pressure


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#1 ali99

ali99

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Posted 07 September 2022 - 03:04 PM

Good morning / Evening Gents,

In our plant during making regeneration for dryer to flare header by nitrogen  , the other systems affected with flare header pressure ( that cause the pressure for other start fluctuating)  .is there any advice to eliminate this affect.

 

Thanks ,

 

 



#2 fallah

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Posted 08 September 2022 - 01:10 AM

 

In our plant during making regeneration for dryer to flare header by nitrogen  , the other systems affected with flare header pressure ( that cause the pressure for other start fluctuating)  .is there any advice to eliminate this affect.

 

 

Hi,

 

Hasn't this effect already been considered in the flare design stage and relevant back pressure in the flare header?



#3 ali99

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Posted 08 September 2022 - 11:19 AM

Dear MR. Fallah ,

 

Actually this affected system running with pressure below flare header pressure (-5 KG) vacuum. 

thanks . 



#4 fallah

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Posted 09 September 2022 - 11:03 PM

 

Actually this affected system running with pressure below flare header pressure (-5 KG) vacuum. 

 

 

Dear Ali,

 

Then in general, you can stabilize the flare header pressure by triggering the purge gas flow rate by a pressure sensor on the header which is set at a positive proper pressure... 


Edited by fallah, 09 September 2022 - 11:04 PM.





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