The present invention relates to an improved method and apparatus for dispersing a gas into a liquid. Gas is injected into a liquid and the flowing gas-liquid mixture is accelerated by a flow area contraction to at least sonic flow velocity, and subsequently decelerated by a flow area expansion to subsonic...http://www.google.fr/patents/US4931225?utm_source=gb-gplus-shareBrevet US4931225 - Method and apparatus for dispersing a gas into a liquid
Method and apparatus for dispersing a gas into a liquid
