Bill3752
Chemical
- Jan 24, 2008
- 138
We are pumping MeOH from a railcar to a storage tank, and venting the vapors from the tank back to the rail car. I have run flow calculations from the tank to the rail car to determine the maximum vapor rate through the OH line - to not overpressure the tank. Then I back calculated the liquid flow rate that matches the maximum allowed vapor rate (then limiting the pump in rate). I am second guessing myself.. Since the vapor back to the RC matches the displacement of the MeOH being pumped out of the RC, should I not be limiting the pump out rate?