Regarding current increase of well production water cut level, the great attention is paid nowadays to the problem of treating produced oily water used for injection into wells. To improve the efficiency of oily water treatment, a centrifugal separator with vane impellers is introduced. This research aims at investigation of the machine geometric parameters and operation characteristics, such as dimensions of the discharge conduits and distribution of treated medium flow rate between the discharge conduits for separation of oil-in-water emulsion inside of the disassembled centrifugal separator. The research brought the detailed study of tangential fluid velocity field inside of the engineered centrifugal separator, which allowed defining general picture of this velocity distribution inside the machine cavity and getting precise dependency between distribution of tangential velocity over the centrifugal separator length and radius, as well as dependencies of the total flow rate between the discharge conduits of the centrifugal separator.
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