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- W1563720004 abstract "Container and flat glass manufactures in the USA and EU are required to comply with new lower NOx emissions limits as regulation becomes stricter. With modifications of the primary air combustion system such as the optimization of natural gas injection, most furnaces have been able to reduce NOx emissions and comply with current regulations. However, greater reduction (500 to 800 mg/Nm3 at 8% O2 dry) was shown to be difficult for many furnaces by the modifications of the fuel injectors alone. Combustion staging to reduce the stoichiometric ratio of the primary air flame by secondary oxidant injection at a strategic location of the furnace has shown significant reduction in NOx emissions in many furnaces. Praxair has developed the Oxygen Enhanced NOx Reduction (OENR) technology to further reduce NOx emissions and achieve NOx levels below 500 mg/Nm3. A small amount of oxygen is injected near the exhaust ports within the furnace to burn out the remaining CO after optimizing the primary air flame. This paper presents a CFD study of the OENR technology and application examples to crossfired and end-port furnaces. NOx emissions as low as 380 mg/Nm3 at 8% O2 dry flue gas conditions were achieved. Overall, OENR proved to be a cost effective technology, which significantly reduces NOx emissions while maintaining good glass quality and reducing fuel consumption." @default.
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- W1563720004 date "2015-04-08" @default.
- W1563720004 modified "2023-10-10" @default.
- W1563720004 title "Oxygen Enhanced NOx Reduction (OENR) Technology for Glass Furnaces" @default.
- W1563720004 cites W1600004654 @default.
- W1563720004 doi "https://doi.org/10.1002/9781119117490.ch6" @default.
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