Spraying Method and Nozzle for Atomization of a Liquid
AssigneeCasale SA
InventorGianfranco Bedetti
Life of this patent
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Abstract
A method for atomizing a liquid (L) in a spraying nozzle (1), wherein a gaseous phase (G) and a liquid (L) are fed to a mixing chamber (30) inside a nozzle (1), obtaining an emulsion of the gas in the liquid, the emulsion being under pressure inside the chamber and formed by gas bubbles enveloped by the liquid in a film state. The speed of the gaseous phase at the inlet of the mixing chamber is around the speed of sound or greater. The atomized liquid is obtained by an expansion of the emulsion at the outlet of the chamber. A suitable nozzle (1) is also disclosed, comprising a mixing chamber (30) and a distribution device (D) adapted to provide appropriate gas and liquid feed to form an emulsion.
Claims7
A spraying nozzle for atomizing a liquid, the nozzle comprising:
- a gas inlet passage;
- a liquid feeding passage;
- and
- a mixing chamber in fluid communication with said gas passage and liquid passage, by means of a gas and liquid distribution device arranged to provide a high-speed gas inlet in an inlet zone of said chamber, and a slower liquid inlet at the same inlet zone of the chamber, to form an emulsion of the gas in the liquid in said mixing chamber.
Dependencies are inferred from the claim text.