Desulfurization behavior in rapid pyrolysis of coal treated by KOH solution
- Akita Univ. (Japan)
- Montana College of Mineral Science and Technology, Butte, MT (United States). Dept. of Geological Engineering
Three kinds of subbituminous and bituminous coals containing potassium hydroxide were heated at 523 K in a nitrogen atmosphere in an attempt to transform thermally stable forms of organic sulfur to reactive ones. Desulfurization extents were 27--52% by alkali leaching while weight loss was observed to be 8-10%. The desulfurization extents were proportional linearly to internal surface area of the parent coals. The parent coals and alkali leached samples were pyrolyzed rapidly by using a free fall reactor in a nitrogen stream up to 1,233K. The alkali-leached samples provided higher extents of reduction for organic sulfur than the parent coals. The combined process of rapid pyrolysis with alkali leaching was effective for reduction of organic sulfur except for a high range coal having small internal surface area.
- OSTI ID:
- 43260
- Report Number(s):
- CONF-940930-; TRN: IM9521%%426
- Resource Relation:
- Conference: 11. annual international Pittsburgh coal conference: coal, energy and the environment, Pittsburgh, PA (United States), 12-16 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Eleventh annual international Pittsburgh coal conference proceedings: Volume 1; Chiang, S.H. [ed.]; PB: 828 p.
- Country of Publication:
- United States
- Language:
- English
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