Pipeline Start-up Problem
Pipeline Start-up Problem
(OP)
I need some urgent help on below problem.
One crude 100km,36in pipeline is design to handle 500MBOD flwo rate with line pressure drop of 224psi. At start up line there is centrifugal pump with no discharge control valve delivering 270psig required inlet pressure. At the moment problem is how to start the line and to run line for couple of months at low flow of 150MBOD as pipeline is not offering required resistance and there is no back pressure control valve at end of pipeline. So how to start and run lien at low flow.
One crude 100km,36in pipeline is design to handle 500MBOD flwo rate with line pressure drop of 224psi. At start up line there is centrifugal pump with no discharge control valve delivering 270psig required inlet pressure. At the moment problem is how to start the line and to run line for couple of months at low flow of 150MBOD as pipeline is not offering required resistance and there is no back pressure control valve at end of pipeline. So how to start and run lien at low flow.





RE: Pipeline Start-up Problem
Regulate by controlling pump speed/output?
RE: Pipeline Start-up Problem
RE: Pipeline Start-up Problem
I2I
RE: Pipeline Start-up Problem
RE: Pipeline Start-up Problem
2)Run the pipeline pump under design conditions but only run it part time (about a third of the time).
HAZOP at www.curryhydrocarbons.ca
RE: Pipeline Start-up Problem
RE: Pipeline Start-up Problem
Maybe I'm missing something..do u have a problem with the motor current(pump operating at end of curve without resistance...)? Lizking has the solution for you...this route is often followed to "match" pump to required system head...This would be inefficient though (as u'd kill a lot of pressure across the orifice on discharge). OWG's solution is good, if u can afford to hold on to oil at source for 16 hrs, while pumping for 8hrs...I'd be curious to know what u do...!
RE: Pipeline Start-up Problem
"Make everything as simple as possible, but not simpler." - Albert Einstein (1879-1955)
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http://virtualpipeline.spaces.live.com/
RE: Pipeline Start-up Problem
RE: Pipeline Start-up Problem
HAZOP at www.curryhydrocarbons.ca
RE: Pipeline Start-up Problem
RE: Pipeline Start-up Problem
line is Gas-free(No flammables/Combustibles inside)and
Cost(as indicated) no problem;then have Throttling Valve with flanges installed at begining of pipeline closed to the pump outlet.
Hope this may be helping.
Best Regards
Qalander(Chem)