Yuantong heating furnace, low-carbon burner, natural gas.
Thread Content
Atmospheric and vacuum distillation unit. 1: Normal furnace outlet 320-340. Eight burners. Two of them are gas. Nitrogen oxides are 130 above the limit. How to adjust. (Negative pressure of -20 to -30, oxygen content controlled at 2-4%, inlet air temperature for the furnace with air preheater of 170–190) 2: Main flame. And how to reasonably adjust the auxiliary fire.
On the one hand, it is necessary to promptly replace the low-nitrogen burners; fuel oil cannot be used any longer. On the other hand, before the modification, atomized steam can be injected through the fuel injector for dilution, which can reduce nitrogen oxides
First, it is necessary to understand the principle of low-nitrogen burners: the higher the flame temperature, the more nitrogen oxides are generated. Therefore, it is important to ensure an adequate supply of oxygen in order to lower the flame temperature. At the same time, the oxygen content needs to be controlled carefully, and the fuel oil should be replaced with hydrogenated refined oil or cracked residue oil, in order to reduce the nitrogen content in the fuel oil.
Replace the burner; modern burners can keep NOX below 80
The oxygen content control range is a bit wide, isn’t it? I usually keep it at 2-2.5%. If the fluctuations are too large, is it because of large fluctuations in your fuel pipeline network?