hello!!!!
Greetings of the day!
Need help regarding the estimation of nitrogen required for a chemical plant.
We are having 0.3 barg nitrogen for pressurizing and 0.04barg for blanketing. we have solvent storage tank with dished ends which is connected with 0.04barg nitrogen. I have estimated tank inbreathing as per API std 2000-2009 calculation which resulted in 90Nm3/hr of air for 30m3 tank. I converted the same to nitrogen flowrate using grahamm's law and applied ideal gas equation to get N2 flow rate at 0.04barg. please clarify whether my calculation is correct or not.
We are using nitrogen which is generated from liquid nitrogen using vaporiser and 50NB line with nitrogen at 6barg is connected to the plant. I want to size a PRV which can reduce 6 barg pressure to 0.04barg. for this how to consider flowrate of nitrogen to size PRV.
Thanks i advance.
Regards,
YB