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- W2007193871 abstract "The goals of this project is to investigate the behavior of sulfur and chlorine during pyrolysis and combustion of Illinois coals, the chemistry of boiler deposits and the process of ash formation, and remedial measures to reduce the sulfur and chlorine compounds in combustion gases. The chemistry of boiler deposits provides information about the behavior of sulfur, chlorine, and ash particles during coal combustion. We report results obtained during this quarter on mineralogical and chemical compositions of twelve samples of boiler deposits collected from superheater and reheater tubes of an Illinois power plant. Scanning electron microscopy shows microscopic calcium sulfate droplets on cenospheres. There is a considerable variation of chemical composition among the samples. While eight out of twelve samples consist predominantly of quartz, mullite, and glass; the remaining four contain an appreciable amount additional phases (calcium sulfate and alkali iron sulfate) . The chlorine content in the samples is determined by neutron activation analysis. one sample contains 37 ppM chlorine, and the chlorine concentration is below the detection limit in other eleven samples (<15--45 ppM), indicating that most of the chlorine in feed coal is lost during combustion. In a separate set of experiments, the effects of composite gases containing Hcl, SO{sub 2}, and HCl+SO{sub 2} on six metals are determined. Chromium-nickel steel and alloy show higher resistance to corrosion than carbon-manganese steels and chromium-molybdenum steels when metal coupons are exposed to hot gases at 600{degree}C for 24 hours." @default.
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- W2007193871 date "1993-05-01" @default.
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- W2007193871 title "Behavior of sulfur and chlorine in coal during combustion and boiler corrosion. Technical report, December 1, 1992--February 28, 1993" @default.
- W2007193871 doi "https://doi.org/10.2172/10149942" @default.
- W2007193871 hasPublicationYear "1993" @default.
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