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Modelling Of Two Flare Header Inlet To Flarestack In Flarenet Program


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#1 JKM

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Posted 18 June 2018 - 07:33 PM

Dear All,

 

I am analyzing the impact of addition of new plant flare relief load on existing flare network. This plant was built long time back. In the existing flare network there are two inlet flare headers(24" and 40") to the Flare Stack however in the Aspen Flarenet Program there is only inlet to the Flare tip. 

 

Somebody suggested combining two headers before feeding to the Flare Tip. However in that situation how to address the pressure drop.

 

Kindly suggest me how to model two flare headers in one Flare Tip.

 

JKM

 

 



#2 Bobby Strain

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Posted 18 June 2018 - 10:22 PM

You should attach a sketch so we can see what you want to model.

 

Bobby



#3 flarenuf

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Posted 19 June 2018 - 02:31 AM

hi

i suspect you have an LP 40" header and a 24" HP header going up the flarestack

You say " two inlet flare headers(24" and 40") to the Flare Stack however in the Aspen Flarenet Program there is only inlet to the Flare tip."

FNT will only take one inlet to the tip so the two headers must both go into the KO drum and then up the stack to a single tip in your model

 

Normally with LP and HP headers you have separte tips , low pressure Pipeflare and HP sonic tip

as bobby says please provide a sketch , better still a PFD from FNT

 flarenuf



#4 flarenuf

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Posted 25 June 2018 - 05:04 AM

hi jkm

any further info on this topic or is it closed now ?



#5 JKM

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Posted 02 July 2018 - 01:31 AM

Dear All,

 

Thanks a lot for your input. I contacted to the Aspen Support Team. Aspen suggested to use the combined Pipe Segment Dimension same as that of Water Seal Drum as we can manually input the non-standard pipe size and thickness.

 

Regards

JKM






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