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Low NOx Burners

Mitsubishi Hitachi Power Systems (MHPS) divides burners by combustion method. For coal fired burners, PM burners are used the swirl combustion method, while NR burners are used for the opposed firing method. The concepts for improving combustibility are the same for both PM and NR burners. By improving ignitibility in rich fuel flame areas and producing moderate combustion in moderate flame areas, the production of NOx emissions is reduced. In addition, improving ignitibility also helps improve the NOx reduction effect due to two-stage combustion.

PM Burner
NR Burner

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