고온극산성화의 탈황설비용 코팅제의 부식특성
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Abstract
Several resins are known for their excellant thermal and acidic resistance, and their mixtures were tested for corrosion resistance coating materials of desulphurization system in power plant. Resins B, C, K, H, N showed acidic resistances of more than 10 days under low sulphuric acid concentration, but rapidly broken down under high sulphuric acid concentration. Good acidic resistance of the resins have no relevancy to their thermal resistances. Durability of the resins in 85 wt% H2SO4 solution was less than an hour. Mixture of resin B and H had the most excellant thermal and acidic resistances. Resin mixture of B/H=5/5 showed thermal resistance of more than 4 day, acidic resistance of more than 6 days in 85 wt% H2SO4 solution.
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