Experimental Study on Sloshing of Offshore Three-Phase Gravity Separator
The sway of offshore FPSO causes fluid level of oil-gas-water three-phase gravity separator to slosh,which deteriorates the oil-water separation effect.Installing anti-sloshing baffle in the separator can suppress slos-hing,but there is currently no clear design method for determining the spacing between anti-sloshing baffles.In this paper,based on the similarity theory,by means of 1∶9 model separator test,the suppression and influence process of the anti-sloshing baffles and internal components on the sloshing of the separator was studied.The results show that when the spacing between internal components such as anti-sloshing baffle,coalescing plate,uniform flow plate and weir plate changes,it can weaken the interface resonance formed by external excitation of FPSO.The resonance between the oil/water contact and external excitation is the main form of liquid sloshing inside the separator.The internal component and coalescing plate with various open porous textures can weaken the amplitude of interface sloshing.The natural period of the liquid area interface between the coalescence plate,uniform flow plate,anti-sloshing baffle and weir plate can be estimated using a cylindrical container calculation formula based on linear theory.The study results provide reference for the anti-sloshing design of separators at offshore production sites.
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维普
