Emulsion atomizer nozzle, and burner, and method for oxy-fuel burner applications

A industrial melting furnace nozzle for oxy-fuel combustion comprising:

• a liquid fuel conduit having an effective diameter;
• an emulsion chamber having a length that is 2 times or less than 2 times of said effective diameter, said liquid fuel conduit disposed to introduce a liquid fuel into said emulsion chamber;
• at least one atomizing gas conduit for introducing atomizing gas into said emulsion chamber;
• wherein said liquid fuel and said atomizing gas mix in said emulsion chamber to create an emulsion mixture having an emulsion mixture velocity less than 12 m/s, and said emulsion mixture has a mean residence time in said emulsion chamber for 500 to 800 μs;
• means for providing an oxygen-enriched oxidizer stream;
• further wherein said emulsion chamber comprises a generally rectangular-shaped discharge orifice said emulsion mixture exits said emulsion chamber into said oxygen-enriched oxidizer stream.

A industrial melting furnace burner for oxy-fuel combustion comprising:

• a liquid fuel conduit having an effective diameter;
• an emulsion chamber having a length that is 2 times or less than 2 times of said effective diameter, said liquid fuel conduit disposed to introduce a liquid fuel into said emulsion chamber;
• at least one atomizing gas conduit for introducing atomizing gas into said emulsion chamber;
• wherein said liquid fuel and said atomizing gas mix in said emulsion chamber to create an emulsion mixture having an emulsion mixture velocity less than 12 m/s, and said emulsion mixture has a mean residence time in said emulsion chamber for 500 to 800 μs;
• means for providing an oxygen-enriched oxidizer stream;
• and
• further wherein said emulsion chamber comprises a generally rectangular-shaped discharge orifice through which said emulsion mixture exits said emulsion chamber into said oxygen-enriched oxidizer stream.