Particulate control, which is receiving increasing attention, is typical of the superior performance offered by pulsed jet baghouses. Environmental Performance Four different sorbents were tested for SO 2 capture. In addition, sodium bicarbonate was tested. The optimal location for injecting the sorbent into the flue gas was immediately upstream of the baghouse. The demonstration baghouse is installed on the back side of the power plant.
Workers stand by the catalyst holder tube prior to lifting it into the penthouse.
To capture NO x , ammonia was injected between the sorbent injection point and the baghouse. The ammonia and NO x reacted to form nitrogen and water in the presence of Norton Company's NC-300 series zeolite SCR catalyst. With the catalyst being located inside the filter bags, it was well protected from potential particulate erosion or fouling. The sorbent reaction products, unreacted lime, and fly ash were collected on the filter bags and thus removed from the flue gas. No appreciable physical degradation or change in the catalyst activity was observed over the duration of the test program .