SO{sub x} and NO{sub x} control in Pyroflow circulating fluidized-bed boilers
Conference
·
OSTI ID:257033
Ahlstrom Pyropower offers the most comprehensive experience with Circulating Fluidized-Bed Boiler technology available in the world. There are more than 135 Pyroflow units in operation or under construction worldwide with over 400 unit years of operating experience. All Ahlstrom Pyropower units have met their guarantees including, in some cases, the strictest emission limits. Pyroflow commercial CFB boilers have proven the ability and flexibility to burn a wide variety of low grade fuels economically and still meet stringent environmental requirements. The emission control in CFB boilers is specific to the type of fuel used, since each fuel analysis can vary widely. Sulfur dioxide emissions (SO{sub 2}) from CFB boilers are effectively controlled by means of feeding limestone at predetermined locations in the furnace. NO{sub x} emissions are controlled by staged combustion. NO{sub x} emissions can be controlled furthermore by direct injection of ammonia or urea at furnace outlet. SO{sub 2} and NO{sub x} emissions in Ahlstrom Pyropower CFB boilers have been improved over the years by improved process and design parameters. Data from recently commissioned units are provided. A comparison of SO{sub 2} and NO{sub x} emissions with permitted levels is made.
- OSTI ID:
- 257033
- Report Number(s):
- CONF-950952--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Pyroflow Compact: The next generation CFB boiler
Experience with in-furnace surfaces in Ahlstrom Pyroflow CFB boilers
Design and experience with large-size CFB boilers
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:211773
Experience with in-furnace surfaces in Ahlstrom Pyroflow CFB boilers
Conference
·
Mon Dec 31 23:00:00 EST 1990
· Proceedings of the American Power Conference; (United States)
·
OSTI ID:6368563
Design and experience with large-size CFB boilers
Conference
·
Fri Dec 30 23:00:00 EST 1994
·
OSTI ID:78183