Quote:
Originally Posted by Old Tele man
...to put some perspective on it: Just how "green" can a power-plant be that requires "piss" (urea) to be dumped into its exhaust system?
...almost makes the 'old' diesel smell "sweet" by comparison, don't it?
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The urea used in SCR systems turns into N2, CO2, & H20 before it goes out the tailpipe. Occasionally some ammonia slips out, but that's typically limited to less than 5 ppm or so. The primary reason it's not allowed above that is just so nearby people don't smell the ammonia.