Denitration technology for stainless steel mixed-acid waste gas
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Our factory is a stainless steel cold rolling plant. A new mixed-acid waste gas denitration system is now planned to be installed. This system is briefly described as follows: A urea solution is pumped into the reaction chamber, where it reacts with exhaust gases (NOx) at high temperatures to produce N2. This is the SCR method. Before the reaction, the exhaust gas contained approximately 1300 PPM of NO2 and approximately 1300 PPM of NO; after the reaction, the levels were around 50 ppm for NO2 and 50 ppm for NO. Note: The S content in the rough gas is very low. Which company in China can develop such a system that offers good performance and low operating costs? It would be best to be able to design catalysts. I will keep an eye on this post in a timely manner.
Can all manufacturers that specialize in flue gas denitration for thermal power plants also handle denitration of stainless steel-related exhaust gases?
The source of the waste gas is likely the pickling line; HF is present there. Therefore, the treatment process involves absorption followed by SCR – first dealing with the HF, and then heating the gas to the catalytic temperature for nitrogen oxide removal. Given the high requirements for removal efficiency, it’s better to use liquid ammonia