Recovery Boiler Superheater Ash Corrosion Field Study

Conference · Fri Jan 01 04:00:00 EST 2010

OSTI ID:988212

Keiser, James R ^[1]; Kish, Joseph ^[2]; Singbeil, Douglas ^[3]

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1. ORNL
2. McMaster University
3. FPInnovations

With the trend towards increasing the energy efficiency of black liquor recovery boilers operated in North America, there is a need to utilize superheater tubes with increased corrosion resistance that will permit operation at higher temperatures and pressures. In an effort to identify alloys with improved corrosion resistance under more harsh operating conditions, a field exposure was conducted that involved the insertion of an air-cooled probe, containing six candidate alloys, into the superheater section of an operating recovery boiler. A metallographic examination, complete with corrosion scale characterization using EMPA, was conducted after a 1,000 hour exposure period. Based on the results, a ranking of alloys based on corrosion performance was obtained.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 988212
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
CORROSION
CORROSION RESISTANT ALLOYS
MATERIALS TESTING
PERFORMANCE
SPENT LIQUORS
SUPERHEATERS
WASTE HEAT BOILERS