2 replies to this topic

[shvet]

Hi everyone!

 

Does anyone have experience in verifying pressure drop (PD) of existing flare system. I have one - coupled acid and conventional HC flare system and I have calculated allmost all excluding flare stack. I haven't found how I can calculate PD through molecular seal (this type). Does anyone have any friction factors for different types of molecular seal?

 

And else - I've done computing one flare (using rated capacity) and got result - DP = 16 kPa from discharge nozzle (throat) to inlet in integrated KO drum. Is this value real, it seems to me rather small?

 

Thanks in advance

[erj]

Hello Shvet,

 

Design Pressure drop through Flare tip can range from 0.1 to 2 psi (approx.)

 

Pressure drop across Gas seal (Molecular Seal) is approx  1 to 3 times the Flare Tip Pressure drop. 

 

Find in detail at:

 

http://nepis.epa.gov...ekPage=x

 

 

Regards,

-

Erj

[shvet]

Hello Shvet,

 

Design Pressure drop through Flare tip can range from 0.1 to 2 psi (approx.)

 

Pressure drop across Gas seal (Molecular Seal) is approx  1 to 3 times the Flare Tip Pressure drop. 

 

Find in detail at:

 

http://nepis.epa.gov...ekPage=x

 

 

Regards,

-

Erj

thanks, very usefull. It'll help me a lot in future.

 

There are some curves (pressure drop - volumetric flow) for John Zink flare tips. Does anyone know is there any similar curves for gas seals?