The use of recuperative heat exchangers in high temperature industrial processes, such at steel reheating, substantially increases energy efficiency and decreases fuel costs. However, they also typically produce high peak flame temperatures, and therefore high NOx emissions. Low-NOx high-performance burners, which are retrofittable to high temperature industrial processes, are needed to maintain industrial competitiveness, while meeting increasingly stringent regulatory consraints. Using basic and applied research data, and modeling results, a simple, low-cost, low-NOx burner for high air preheat applications was designed and tested, at pilot-scale.
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