Catalytic solutions for environmental issues related to flue gas
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What is the effectiveness of catalytic flue gas denitration, whether by using a denitration device or by adding a denitration agent inside the regenerator? And their respective advantages and disadvantages? I hope to receive guidance from all the teachers!
There are quite a few manufacturers that use flue gas desulfurization these days, right?
With the upper denitration device, there are currently many problems. If an SCR system is used, since it operates before desulfurization, the small amount of SO3 present in the flue gas, together with the SO3 generated during the SCR process, reacts with NH3 to form ABS (NH4HSO4). ABS becomes viscous at low temperatures, which has a significant impact on the operation of the boiler. If LoTOx or WGS+ is used, the total N content in the desulfurization saline wastewater is high. If denitration additives or triple-effect additives can solve the emission problem, it is recommended to use such additives; desulfurization is impossible to achieve.
Are there also requirements now for nitrogen oxides in flue gas?
How did you solve the nitrogen oxide problem?
Currently, the additives don’t seem to yield very satisfactory results! How did you address the issue of nitrogen oxides in the flue gas?
Denitration additives have certain limitations, and it is necessary to conduct screening in order to find a suitable one. One can start by consulting literature to identify an additive that offers high denitration efficiency. Generally speaking, it is necessary to identify the solution to a problem; first, one must determine the primary issue that needs to be addressed.
If the ammonia nitrogen content in the raw materials is well controlled, the nitrogen oxides in the flue gas will be within acceptable levels. Nowadays, many state-owned enterprises use denitration devices