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Parallel Operation of Multistage Barrel Pumps

thread407-94820

Parallel Operation of Multistage Barrel Pumps

Parallel Operation of Multistage Barrel Pumps

(OP)
I'm considering running two multistage barrel pumps in parallel. They are driven by motors(3000hp each) and one motor is connected with power recovery turbine.
Fluid : hydrocarbon
specific gravity : 0.876, temp.:97 'C
rated capacity : 219.8m3/hr
diff. head : 2490m (suc. press.:6.4kg/cm2g)
Normally one pump is delivering more flow with PRT. Recently PRT is in trouble due to vibration.
Piping layout is as follows : suc.12",dis.10",spillback4" each(with orifice)
I have no experience running in parallel mode. What will happen to 10th stage pumps? Is this a good choice to increase the flow?

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