Recent advances in the perchloroethylene coal cleaning system
- Univ. of Akron, OH (United States). Dept. of Chemical Engineering
- Electric Power Research Inst., Palo Alto, CA (United States)
The perchloroethylene coal desulfurization process has been shown to selectively remove both inorganic and organic sulfur as well as mineral matter from high sulfur Midwestern coals. The process consists of four stages: a wet grinding of the coal to {minus}200 mesh, an extraction stage used to remove organic sulfur, a float sink stage to remove pyritic sulfur and mineral matter, and finally, a steam stripping stage to remove residual perchloroethylene from the coal. Using this process, up to 70% of the organic sulfur and over 90% of the pyritic sulfur can be removed from the coal. Recent work has studied the effects of parameters such as type of coal, particle size, moisture content, process temperatures, etc., on the sulfur removal efficiency. In addition, a kinetic relation was established for several types of Midwestern coals and minimum extraction time was established. The kinetic study was also used to conduct simulation studies of batch, plug flow reactor, and continuous stirred tank reactor.
- OSTI ID:
- 51947
- Report Number(s):
- CONF-940930-; TRN: IM9524%%417
- 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 2; Chiang, S.H. [ed.]; PB: 860 p.
- Country of Publication:
- United States
- Language:
- English
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