在小规模流化床(FBC)中燃烧一种低S高Cl煤1000 h后,对放置于接近沸腾床位置的A210-C碳钢管腐蚀情况进行分析.发现在碳钢管表面温度为470℃~560℃的区域腐蚀产物(主要为Fe2O3)严重剥落.剥落的腐蚀产物表面覆盖一层沉积盐,部分区域发现有(K,Na)Cl.对残留在钢管表面的腐蚀层进行分析,发现在腐蚀层-碳钢界面或其附近的基体中出现局部氯化,导致形成FeCl2层;局部快速腐蚀,形成向基体一侧的腐蚀突体;形成内部空洞这三种腐蚀形态.并对此现象的产生及Cl2的影响机制进行了详细探讨.
参考文献
[1] | STRINGER J;Wright I G .Current limitations of high temperature alloys in practical applications[J].Oxidation of Metals,1995,44(1-2):265-308. |
[2] | James P J;Pinder L W .The impact of fuel chlorine on the fireside corrosion of boiler tubing:a UK perspective[J].Materials at High Temperatures,1997,14(03):117-126. |
[3] | Guttmann V;Stein K;Bakker W T .Deformation - corrosion interactions in selected advanced high temperature alloys[J].Materials at High Temperatures,1997,14(03):127-136. |
[4] | Reese E;Grabke H E .Effects of chlorides on the oxidation of 21/4Cr - 1Mo steel[J].Werkstoffe und Korrosion,1992,43:547-557. |
[5] | H. J. GRABKE;E. REESE;M. SPIEGEL .THE EFFECTS OF CHLORIDES, HYDROGEN CHLORIDE, AND SULFUR DIOXIDE IN THE OXIDATION OF STEELS BELOW DEPOSITS[J].Corrosion Science,1995(7):1023-1043. |
[6] | Peng X;Liu K;Hack P.Technical Meeting of Central States Section on Combustion Fundaments and Applications[M].Indianapolis; Indiana; USA,2000:80. |
[7] | Peng X;Pan W P;Riley J T.High temperature corrosion of A210 -C carbon steel in simulated coal combustion atmospheres[J].Oxidation of Metals |
[8] | Xie W.;Pan W.-P.;Riley J.T.;Liu K. .Interaction between emissions of SO_2 and HCl in fluidized bed combustors[J].Fuel,1999(12):1425-1436. |
[9] | Peng X.;Pan WP.;Riley JT. .A degradation mode of a carbon steel during thermal cycling under a simulated combustion environment[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):270-275. |
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