Conoco Specialty Products Inc.

Charles M Kalnins

Noel Carroll

Phillip C Tuckett

Robert W Carroll

Soren R Hansen

Method and apparatus for maintaining predetermined cyclone separation

Separating liquids

Cyclone separator

Method and apparatus for separating oil-water mixtures in which the oil is present as droplets so as to comprise the disperse phase, the mean droplet size being greater than 56.7 micron, using a cyclone separator having a swirl coefficient, S, in the range

Method and apparatus for separating liquid components from a liquid

Method of separating oil-water mixtures in which the oil is present as droplets so as to comprise the disperse phase, the mean droplet size being in the range 22 to 50 micron. Use is made of a cyclone separator having a swirl coefficient in the range 8 to 30, such as greater than 12.5, or at least 13. The swirl coefficient is defined as ##EQU1## where d.sub.i is the effective diameter at the inlet to the separator d.sub.2 is the nominal separator diameter at a downstream location, and A.sub.i is the total effective inlet area.

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Malvern, Australia

Charles M Kalnins