Simulation of the erosion and corrosion of materials in fluidized bed combustors
- Tampere Univ. of Technology (Finland)
Fluidized bed combustion is a very useful way for heat energy production from highly different kind of fuels. The technique is especially suitable for burning fuels with low caloric value, e.g. wood bark, process waste slurries, peat and community waste. Highly aggressive atmosphere created in multifuel operation may cause severe corrosion and erosion problems on materials used in fluidized bed combustors. A laboratory scale test rig for the simulation of conditions existing in fluidized bed combustors at multifuel operation has been built and tested. The erosion and corrosion behavior of different types of materials (low alloy steels, chromium and chromium-nickel steels, high nickel alloys, high temperature superalloys) as well as the influence of different variables on the erosion and corrosion rates have been studied in short term laboratory tests. The influence of different types of ceramic coatings applied by CVD, sputtering and plasma spraying methods on the erosion and corrosion resistance of different materials has been studied in the test rig at different conditions. A summary of the recent results is presented and discussed. Some aspects concerning the further development of the test facility are presented and the usefulness of short term laboratory tests in the estimation of the behavior of materials in real structures is discussed. The advantages of different types of coatings as an improvement of the erosion and corrosion resistance of materials in fluidized bed combustors are discussed on the basis of obtained results.
- OSTI ID:
- 5464428
- Report Number(s):
- CONF-840909--
- Journal Information:
- TMS (The Metallurgical Society) Paper Selection; (USA), Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Vol. 56; ISSN 0197-1689; ISSN TMPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
014000* -- Coal
Lignite
& Peat-- Combustion
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
360205 -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
ALLOYS
BENCH-SCALE EXPERIMENTS
CERAMICS
CHEMICAL COATING
CHEMICAL REACTIONS
CHEMICAL VAPOR DEPOSITION
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COATINGS
COMBUSTION
COMBUSTORS
CORROSION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
DEPOSITION
ENERGY SOURCES
EROSION
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUELS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
MUNICIPAL WASTES
NICKEL ALLOYS
NICKEL BASE ALLOYS
ORGANIC MATTER
OXIDATION
PEAT
PLASMA ARC SPRAYING
PROTECTIVE COATINGS
SOLID WASTES
SPRAY COATING
SPUTTERING
STAINLESS STEELS
STEELS
SURFACE COATING
THERMOCHEMICAL PROCESSES
WASTES
WOOD WASTES