LongkingCotech Attended “The 2020 China Cement Industry Ultra-clean Emission Technology Exchange Conference”

If a denitrification system can be operated stably for a long-term largely depends on the selection of SCR catalyst and the process design of the system. He summarized the difficulties of cement kiln SCR DeNOx technology as “ thee high and one small”. “Three high” refers to high NOx concentration, high dust, and high content of alkali metal oxides in dust. “One small” refers to small particle size of dust.

Mr. Chen emphasized that in the management of SCR denitrification system of cement kiln, the flow field distribution of SCR inlet should be paid more attention to avoid the concentration of dust, and at the same time, the design of ash blowing system should also be paid attention to reduce the influence of ash to the catalyst.

According to the working condition of cement industry, only relying on the the core product of macroporous and high strength catalyst, adopting multi-dimensional flow field and the combining ash cleaning technology synchronously, the compresensive design can achieve a good DeNOx effect.