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Desulfurization of Coal in a Fluidized-Bed Reactor
Coal Desulfurization
  • G.B. Haldipur, Iowa State University
  • Thomas D. Wheelock, Iowa State University
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Book Chapter
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Published Version
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The pioneering investigation of Jacobs and Mirkus (1) showed that substantial amounts of sulfur could be removed from Illinois No. 6 coal by treatment with mixtures of air, nitrogen, and steam in a fluidized bed reactor at moderately elevated temperatures. Thus by treating coal, which had been ground in a hammer mill (100% through 8-mesh screen), with a gas mixture containing 2.7% oxygen, 35% steam, and 62.3% nitrogen at 510°C for 30 min, the sulfate and pyritic sulfur content of the solids was reduced about 80% and the organic sulfur content 10%. However, at the same time the content of combustible volatile matter was reduced about 65%. Desulfurization improved with increasing residence time and decreasing particle size, but it was affected only slightly by oxygen concentrations in the range of 2-10% or steam concentrations in the range of 0-85%. The sulfur content of the char declined as the treatment temperature.

Reprinted (adapted) with permission from Coal Desulfurization Chapter 23, pp 305–320 DOI: 10.1021/bk-1977-0064.ch023. Copyright 1977 American Chemical Society.

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American Chemical Society
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Citation Information
G.B. Haldipur and Thomas D. Wheelock. "Desulfurization of Coal in a Fluidized-Bed Reactor" Coal Desulfurization Vol. 64 (1977) p. 305 - 320
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