Reasons for the sudden increase in nitrogen oxides in the flue gas of the heater in a delayed coking unit
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Our delayed coking unit’s heater uses refinery gas as fuel; low-nitrogen burners have been installed, and the emission levels are generally within acceptable limits, at less than 100 mg/m3. Recently, it has sometimes risen suddenly to over 100 mg/m3, lasting for 2-4 hours. What could be the possible reasons? The oxygen content and the heating furnace are relatively stable.
Compare the differences in operations and fuel gas, etc., when nitrogen oxides levels are high or low; this is generally the issue at hand
Pay attention to the composition of the fuel gas in the future
It shouldn’t happen; it will be normal again in a while
The formation of nitrogen oxides is mainly caused by excessively high temperatures in the flame zone of the burners; controlling the opening degree of the air valves for individual burners can reduce the oxygen content in the furnace.
The formation of nitrogen oxides is mainly caused by excessively high temperatures in the flame zone of the burners; controlling the opening degree of the air valves for individual burners can reduce the oxygen content in the furnace.
The formation of nitrogen oxides is mainly caused by excessively high temperatures in the flame zone of the burners; controlling the opening degree of the air valves for individual burners can reduce the oxygen content in the furnace.
The formation of nitrogen oxides is mainly caused by excessively high temperatures in the flame zone of the burners; controlling the opening degree of the air valves for individual burners can reduce the oxygen content in the furnace.