Boiler tube failures in municipal waste-to-energy plants: Case histories

Conference · Fri Dec 01 04:00:00 EST 1995

OSTI ID:128729

Krause, H H; Wright, I G ^[1]

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1. Battelle, Columbus, OH (United States)

Waste-to-energy plants experienced boiler tube failures when the design changed from waste-heat boilers to radiant furnace waterwalls with superheat, adopted from coal-firing technology. The fireside attack by chlorine and sulfur compounds in the refuse combustion products caused many forced outages in early European plants with high steam temperatures and pressures. In spite of conservative steam conditions in the first US plants, some failures occurred. As steam temperatures increased in later US plants, corrosion problems multiplied. Over the years these problems have been alleviated by covering the waterwalls with either refractories or weld overlays of nickel-base alloys and using high nickel-chromium alloys for superheater tubes. Various changes in furnace design to provide uniform combustion and avoid reducing conditions in the waterwall zone and to lower the gas temperature in the superheater also have helped to minimize corrosion.

• OSTI ID: 128729
• Report Number(s): CONF-950304--
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
BOILERS
COMBUSTION
CORROSION
FAILURES
GASES
IRON ALLOYS
MATERIALS
MUNICIPAL WASTES
NICKEL BASE ALLOYS
REFUSE DERIVED FUELS
RESOURCE RECOVERY FACILITIES
SUPERHEATERS
TEMPERATURE RANGE 0400-1000 K
WATERWALL INCINERATORS