<P> A vapor--liquid separator is a device used in several industrial applications to separate a vapor--liquid mixture . </P> <P> A vapor--liquid separator may also be referred to as a flash drum, breakpot, knock - out drum or knock - out pot, compressor suction drum or compressor inlet drum . When used to remove suspended water droplets from streams of air, it is often called a demister . </P> <P> For the common variety, gravity is utilized in a vertical vessel to cause the liquid to settle to the bottom of the vessel, where it is withdrawn . </P> <P> In low gravity environments such as a space station, a common liquid separator will not function because gravity is not usable as a separation mechanism . In this case, centrifugal force needs to be utilised in a spinning centrifugal separator to drive liquid towards the outer edge of the chamber for removal . Gaseous components migrate towards the center . </P>

How do you separate a liquid from a gas
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