High nitrogen oxides in flue gas
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Is the high level of nitrogen oxides in the flue gas related to the combustion temperature of the incinerator?
It depends on the denitration method you use; we use denitration additives, and in that case temperature is very important because CO is needed as a reducing agent.
Flame temperature, excess air coefficient.
Temperature, pressure, oxygen partial pressure in flue gas
Both temperature and air levels need to be controlled; there are meters for environmental monitoring that can be used as a reference
There are three forms of NOx formation. The first type arises from materials containing nitrogen; it is fuel-type NOx. The second type is of the rapid formation type, with formation temperatures generally above 1300°C. The third type is of the thermal formation type, and its formation is related to temperature, usually at levels above 1500°C, as this process involves the oxidation of nitrogen in the combustion air
A high oxygen content in the furnace results in high levels of nitrogen oxides in the flue gases
Increase the amount of coke added, focusing on oxygen-deficient regeneration
It is closely related to the temperature of the incinerator; excessive temperature leads to the oxidation of nitrogen in the air. The oxygen content serves only as a conversion factor – when its level is high, the conversion value will inevitably be high as well.