Denitration catalyst
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This denitration system uses an SCR system, and steam soot blowing is employed for cleaning the reactor. Now, hot-condition tuning of the steam soot blowing process is required. Is it possible to inject steam at approximately 250 degrees and 0.6 MPa while the reactor is at normal temperature (with the induced draft fan running to draw in external air)? What are the impacts?
Steam will condense into water, and denitration catalysts must not get wet
It’s just experience – a steam soot blower is tested for its mechanical properties only when it’s at room temperature, and mechanical properties have nothing to do with whether the medium flows through it or not. This is exactly how we did it with the 600,000-unit units before. Other methods can be used to check for blockages.
Yes, once the catalyst gets wet, it’s sufficient to pay attention to controlling the temperature during the heating activation process. However, we no longer use steam for soot blowing here; instead, heated nitrogen is used through a rake-type soot blower for this purpose