Types of Low NOx Burners

The low nitrogen burners currently on the market are mainly divided into the following types:
1. Surface combustion ultra-low nitrogen burner;
Surface combustion ultra-low nitrogen burners can usually control NOx to within 30 mg within the full fire range. Its advantage is that it is simple to install and does not require FGR flue gas recirculation pipes; its main disadvantage is that it needs to filter air and increase maintenance work At the same time, the oxygen content is about 7%, which reduces the local combustion efficiency;
2. Stage burner;
Staged burners can usually control NOx to 65 mg in the full fire range, and the limit is about 40 mg. Further reduction of NOx emissions may lead to combustion instability, or sacrifice adjustable ratio and other disadvantages;

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