水冷壁管高温腐蚀的原因分析及对策

254Vol.25No.420038WATERCONSERVANCY&ELECTRICPOWERMACHINERYAug.2003Countermeasureandanalysiscauseofthehightemperaturecorrosiononthewatercoolingwalltube1,2(1.,550002;2.,450052):670t,,,:;;:TK224.9:TK223.3+1:B:1006-6446(2003)04-0004-02:2003-02-27:(1970-),,,,0,,,,,,,#9WGZ670/13.7-3ST45.8ª60mm6.5mm,S=80mm199511,7,,,1#9,7,,(1724m),,0.29mm/,,22.1(FeS2),:FeS2FeS+[S]H2SSO2:2H2S+SO22H2O+3[S]350,:Fe+[S]FeS,3FeS+5O2Fe3O4+3SO2,,,2.2©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.254,:5,,,,,,,t3,,,,,500800,:(1),,(2),,,(3),(4),,,,,2.3,#9,3.15%,Ay31%,,,,,SO2,SO3,H2S,HCl,,,,,3,,,,3.11998,,,,,,,(,),,,3.219981999,,,;,,(,),,,,,,,,,3.3,,,,,,,(24)©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.242003810mmU,2.3,,()3.5kg,,,,100g,11kg,456kg6023,3,,,8,,10,,,,(:)(5),,,#919983(),19987;199810(),19997,200111,,2.5m2,,1719m,(1),,,(2)40A(3)NiCrTi,(4)Al,Al,(5)0.6mm,200112,20025,,,,,4,,,,(:)(17),,,200251,,(:)©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.