High temperature corrosion of superheater tubes in waste incinerators and coal-fired plants

被引：29

作者：

Weulersse-Mouturat, K

Moulin, G

Billard, P

Pierotti, G

机构：

[1] Univ Technol Compiegne, Lab Roberval, CNRS, UMR 6066,Ctr Rech Royallieu, F-60205 Compiegne, France

[2] Elect France, Div R&D, Dept Mat & Mecan Composants, F-77818 Moret Sur Loing, France

[3] TIRU SA, Traitement Ind Residus Urbains, F-75378 Paris 08, France

来源：

HIGH TEMPERATURE CORROSION AND PROTECTION OF MATERIALS 6, PRT 1 AND 2, PROCEEDINGS | 2004年 / 461-464卷

关键词：

coal-fired plants; waste incinerators; superheaters; fireside corrosion; complex; oxidizing atmospheres; ashes; T91 and AC66 steels;

D O I：

10.4028/www.scientific.net/MSF.461-464.973

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The combustion of coal and Municipal waste generates very corrosive media particularly near the superheater tubes. Sulphur and chlorine are known to be the main corrosive agents in coal-fired plants and in waste incinerators respectively. This paper focuses on the study of the corrosivity of such environments composed of gases and ashes, at high temperature, on two commercial alloys with different chromium and nickel contents: the T91 and AC66 steels. Specific laboratory tests allowed to study the temperature effect and the influence of the ash and gas constituent contents (HCl-SO2-HO-K2SO4-Na2SO4-KCl-NaCl). Experimental results showed a higher corrosivity of the waste incinerator conditions compared to the coal-fired plant ones. Moreover the AC66 steel has a better corrosion resistance than the T91 alloy. Numerous factors are implicated in the corrosion processes and can act in concert.

引用

页码：973 / 980

页数：8

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