Reliable fabrication with alloy 59 hot roll-clad plates in a major FGD-project
- Krupp VDM GmbH, Werdohl (Germany)
- Zeppelin Silo- und Apparatetechnik GmbH, Friedrichshafen (Germany)
Flue gas desulfurization (FGD) units require large components to accommodate the flow volumes and short contact times between raw gas and absorbent which are typical of these processes. For over two decades, increasing use has been made of nickel base alloys to protect flue gas ducts, absorbers, chimneys and internals against corrosion attack. In order to take advantage of their excellent corrosion resistance while keeping investment costs low, these NiCrMo-materials are frequently used in the form of a cladding applied in thin layers on the carbon steel structural load-bearing component. In view of the thin corrosion protection layer, the quality of the welded joint on the nickel alloy side assumes critical importance. This paper describes the development of tests and welding procedures for hot roll-clad plates used in large FGD components in a modern lignite-fired 3,500 MW power plant in Germany.
- OSTI ID:
- 272005
- Report Number(s):
- CONF-960389--
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
36 MATERIALS SCIENCE
CARBON STEELS
CHROMIUM ALLOYS
COMBUSTION
CORROSION PROTECTION
CORROSION RESISTANT ALLOYS
CREVICE CORROSION
DESULFURIZATION
FLUE GAS
FOSSIL-FUEL POWER PLANTS
HARD FACING
IRON ADDITIONS
LIGNITE
MOLYBDENUM ALLOYS
NICKEL BASE ALLOYS
PITTING CORROSION
POLLUTION CONTROL EQUIPMENT
WELDED JOINTS
WELDING