Fellow 50SG user’s: Any idea of the typical life expectancy of the HUG exhaust catalyst? I’m putting a long-term O&M budget projection together and will plan to replace at intervals, but don’t know what interval is expected.
Thanks in advance for any fleet experience/tribal knowledge.
Dave Mordecai, Hopkins Generating Station, Tallahassee FL
For Humboldt Bay our first ammonia slip catalyst went bad 5 years after commissioning and approximately 21650 on the engine. We find that the number of starts affects the failure time quite a bit. And of course, operating temperature. Even though we operated below the high temperature we found the catalyst degrades rapidly at the higher temperatures.
The sequence of events is as follows – ammonia slip fails first. Followed shortly by the CO catalyst – however, a row of CO catalyst can be added to bring emissions back into control.
The SCR catalyst fails next and a row is added to regain emissions.
I’d be happy to discuss via phone if you’d like – 707 441 2667.
We can refurbish some here in my facility if they are bad especially OXI and Ammonia slip ones for a fraction of the replacement cost!
The catalysts we have designed and patented should last 7 years and are withstanding overtemperature above 550C and can be refurbished at least 2x > big advantage and super easy exchange (like2h per layer max) much lower purchasing price on SCR/OXI/ROM catalysts as the ones you have. Hope this helps. Any questions, please let me know. Sebastian @ Service 3000