N2h O No Nh 651

Thermal NO is of greater significance in the post-flame region than within the flame; consequently, several technologies have been developed for reducing thermal NO by lowering the peak temperature in the flame, minimizing the residence time in the region of the highest temperature, and controlling the excess air levels.

Prompt NO Prompt NO is the fixation of atmospheric (molecular) nitrogen by hydrocarbon fragments in the reducing atmosphere in the flame zone [21]. The proposed mechanism is:

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