Abstract
The sulfur compounds present in coal are converted to hydrogen sulfide when coal is gasified. To comply with environmental regulations, a high fraction of the sulfur must be removed from the product gas stream. Calcium-based sorbents are the prime candidates for in-bed capture of sulfur.
The removal of sulfur takes place through the reaction of hydrogen sulfide with calcium-based sorbent and produces calcium sulfide, which is not stable and therefore not suitable for disposal. Calcium sulfide, however, can be either reacted with oxygen to produce stable and environmentally acceptable compounds for disposal, or regenerated with water and carbon dioxide.
This paper addresses the effects of operating variables on the successful stabilization and regeneration of sulfide-containing solid wastes from coal gasifiers.
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© 1998 Springer-Verlag Berlin Heidelberg
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Abbasian, J. (1998). Stabilization and Regeneration of Spent Sorbents. In: Atimtay, A.T., Harrison, D.P. (eds) Desulfurization of Hot Coal Gas. NATO ASI Series, vol 42. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-58977-5_14
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DOI: https://doi.org/10.1007/978-3-642-58977-5_14
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