Sulfur capture during partial coal combustion

  title={Sulfur capture during partial coal combustion},
  author={G. M. Whitney and Zhang Yunming and M. Denn and E. Petersen},
  journal={Chemical Engineering Communications},
A coal-water slurry is an econonical substitute for premium liquid fuels, but the amount of sulfur in coal is usually higher than in petroleum liquids. Lime has been used to capture sulfur in fluidized coal combustion as CaSO4, but the latter decomposes above 1273 K. We report here on the possible capture of sulfur in the ash as CaS, which has higher thermal stability than CaSO4. This can be accomplished using a fuel-rich first stage in a coal-water slurry combustor, or under the conditions… Expand
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