Praxair’s dilute oxygen combustion technology for pyrometallurgical applications |
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Authors: | M F Riley H Kobayashi A C Deneys |
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Affiliation: | (1) Praxair, Inc., 10591 Tarrytown, NY |
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Abstract: | Dilute oxygen combustion (DOC) technology uses separate high-velocity fuel and oxygen jets to generate strong in-furnace gas
recirculation, producing combustion between the fuel and a highly diluted oxygen and furnace-gas mixture. These very low NOx
oxy-fuel burners have been developed and commercially demonstrated in steel reheating furnaces. The burner design meets industry
needs for increased productivity and lower operating costs with minimal capital expense and low maintenance. The performance
of DOC technology has been measured under laboratory and industrial conditions encompassing both natural gas and coke oven
gas firing, and a wide range of furnace temperatures and nitrogen levels that simulate air infiltration. This paper describes
the results of the tests using natural gas as the fuel and lists potential applications for DOC technology in the non-ferrous
metals industry.
For more information, contact A.C. Deneys, Praxair, Inc., Applications Research and Development, 777 Old Saw Mill River Road,
Tarrytown, New York 10591; e-mail Adrian_Deneys@Praxair.com. |
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