Do nitrogen oxides have an impact on conversion?
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Will the presence of nitrogen oxides in the flue gas entering the conversion process affect the conversion rate? Nitrogen oxides are absorbed by sulfuric acid in the absorption section; will this affect the absorption rate of sulfur trioxide? I would appreciate it if some experts could help analyze this.
My workshop was found to have nitrogen oxides during the exhaust emission compliance tests at the end of last year.
Yes, we also detected it during the environmental compliance inspection, and its concentration was quite high – many times higher than that of sulfur dioxide!
Nitrogen oxides present in the flue gas entering the conversion process do not have a negative impact on the conversion rate. However, these nitrogen oxides are not completely absorbed by sulfuric acid in the absorption section, resulting in excessive levels of nitrogen oxides in the exhaust gases and, in severe cases, yellow smoke being emitted.
Nitrogen oxides are relatively stable compounds that do not react during the conversion process, so they have no impact on the conversion； However, inside the absorption tower, it will react with sulfuric acid, which has an impact.
It does not affect conversion and absorption. The concentration of nitrogen oxides is relatively high in sulfur-based acid production plants, and the main reasons for this are: 1. Ammonia oxidation occurring within the organic compounds present in sulfur ； 2. In the sulfur incinerator, at temperatures above 1000 degrees, a small amount of nitrogen is converted into nitrogen oxides.