LIQUID-GAS MIXING DEVICE

摘要

A device for mixing liquids and gases to produce a fine foam, for example for aeration or gas scrubbing applications, comprises a tubular passage (2) along which a liquid is fed under pressure and in which there are formed openings (4) to which gas is emitted. The resulting mixture is forced through a pre-mixing orifice (6), and through a sized restrictor (7) in which the mixture reaches supersonic velocity, subsequent shock waves producing a fine foam. The gas may be emitted through a Venturi (11), and the restrictor may be a de-Laval convergent-divergent nozzle (12).