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Hydrocyclone Deoiler

Hydrocyclone Deoiler

(OP)
Good-day All,
Please, what is the best realistic formula or equation for the calculation of Hydrocyclone Deoiler oil reject flow-rate through a 1mm orifice size of the over flow liner? I’m trying to optimize production: produced water handling capacity 29,000 BPD, fluid inlet pressure; 6-bar-g @ 60 ppm dispersed oil concentration and oil outlet pressure of 2.0 bar-g. Inlet temperature of 55 oC, observed wet oil SG 0.865.
Thanks a million for the anticipated response.

RE: Hydrocyclone Deoiler

If I'm not mistaken, there is considerable dp between the feed nozzle and the central oily water core that spins out into the reject nozzle in a hydrocyclone. Without knowing the pressure in this central core, it wont be possible to size out this RO. There are vendor performance curves that tell you what the reject stream pressure is for various feed rates and corresponding reject stream flow ratios.

RE: Hydrocyclone Deoiler

(OP)
Thanks George Verhese, true there’s significant pressure drop between inlet and outlet, and that’s the more reason we need to fundamentally determine the oil flow-rate before retrofitting.

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