OS3-2 RDF燃焼ボイラにおける高温腐食とその対策(OS3 バイオマス・新燃料・環境技術,分散と集中の共存)
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概要
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This paper describes high temperature corrosion of SUS310J1 superheater tubes in FBHE on RDF firing circulation fluidized bed combustor boilers (CFB). The scale deposited on the corroded surface of superheater tubes was mainly composed of metal (Fe, Ni, Cr) oxides and NaCl, KCl. Also, the surface of circulation particles was being corrosive materials such as Na, K, S, Cl, etc. The high temperature corrosion in these case was caused by chlorination reaction of metal surface with chlorides compound such as NaCl, KCl from circulation particles surface. The prevention methods of high temperature corrosion to superheater tubes in FBHE on actual FBC boilers are hopeful to application metal (alloy625, other)+ceramic(ZrO2-Y2O3/Al2O3) duplex thermal sprayed coatings.
- 2006-06-28