ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Corrosion field tests have been carried out in the superheater region of a commercialwaste-fired 75MW CFBC boiler using air cooled probes. Exposure time was 24 and 1000 hours.The effect of adding sulphur to the fuel on the corrosion of two high alloyed steels and a lowalloyed steel was studied. The fuel consisted of 50% household waste and 50% industrial waste.The exposed samples were analyzed by ESEM/EDX and XRD. Metal loss was determined after1000 hours. Both materials suffered significant corrosion in the absence of sulphur addition and theaddition of sulphur to the fuel reduced corrosion significantly. The rapid corrosion of the highalloyed steel in the absence of sulphur addition is caused by the destruction of the chromiumcontainingprotective oxide by formation of calcium chromate. Adding sulphur to the fuel inhibitedchromate formation and increased the sulphate/chloride ratio in the deposit. Iron(II) chloride formedon the low alloyed steel regardless of whether sulphur was added or not
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.595-598.289.pdf
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