Pumping n-heptane
Pumping n-heptane
(OP)
I have an issue involving the transfer of n-heptane from a tanker truck to a 15Kgal stainless storage vessel.
Question 1: what is the recommended velocity of fluid (heptane) through this distribution system (static buildup prevention)? The system was designed for 5ft/sec, but I cannot find a reference in NFPA to back this up. 5ft/sec is mighty slow.
Attributes of system (to preclude addn'l questions):
Nitrogen powered diaphragm pump,2" sch10 316 stainless piping, gounded/bonded throughout, Nitrogen blanketing on tank.
Question 1: what is the recommended velocity of fluid (heptane) through this distribution system (static buildup prevention)? The system was designed for 5ft/sec, but I cannot find a reference in NFPA to back this up. 5ft/sec is mighty slow.
Attributes of system (to preclude addn'l questions):
Nitrogen powered diaphragm pump,2" sch10 316 stainless piping, gounded/bonded throughout, Nitrogen blanketing on tank.





RE: Pumping n-heptane
Through a 2" pipe, how fast are you going to fill anyway???
http://virtualpipeline.spaces.msn.com
"What gets us into trouble is not what we don't know, its what we know for sure" - Mark Twain
RE: Pumping n-heptane
I agree with "Biginch".... 5 fps seems reasonable
According to my trusty Crane 410, 5 fps in a 2"NPS pipe gives you a flowrate of about 55 gpm.
That means a 4000 gallon truck will fill in ~ 72 minutes.
"Mighty slow"...???
NFPA is not going to tell you how to design your piping systems
-MJC
RE: Pumping n-heptane
HAZOP at www.curryhydrocarbons.ca