Earlier this month we posted about an AIG retrofit we completed in January. See below. The plant ran a stack test on 2/5 to determine how the unit is performing and results look great: Stack test before retrofit: NH3 slip = 3.54 ppm Stack test after retrofit: NH3 slip = 0.59 ppm That's 83% reduction! A few notes.. - Before the retrofit, the NH3 slip was especially problematic during load changes. Now, the NH3 slip is well within limits through all load swings! - The improvements were all made with just a new AIG by SCR Solutions. No catalyst modifications! - NH3 consumption also reduced by 16% Contact us if you would like some more details and how this can be applied at your plant. www.scr-nox.com This was done on an existing 60MW LM6000 combined cycle unit in northern CA that has been experiencing poor SCR performance since startup in 2003. The retrofit included CFD modeling, detailed engineering and custom fabrication. This whole process was performed in about 4 months to meet the plant's Fall 2024 outage!
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3 周This is great results! Improving NH3:NOx maldistribution is the best way to tackle reducing slip and reduce ammonia consumption! Many plants are able to push out the SCR Catalyst replacement by a few years by more efficiently using the existing volume of catalyst.