Modified approaches for high pressure filtration of fine clean coal
- Center for Applied Energy Research, Lexington, KY (United States)
Removal of moisture from fine (minus 28 mesh) clean coal to 20% or lower level is difficult using the conventional vacuum dewatering technique. High pressure filtration technique provides an avenue for obtaining low moisture in fine clean coal. This paper describes a couple of novel approaches for dewatering of fine clean coal using pressure filtration which provides much lower moisture in fine clean coal than that obtained using conventional pressure filter. The approaches involve (a) split stream dewatering and (b) addition of paper pulp to the coal slurry. For Pittsburgh No. 8 coal slurry, split stream dewatering at 400 mesh provided filter cake containing 12.9% moisture compared to 24.9% obtained on the feed material. The addition of paper pulp to the slurry provided filter cake containing about 17% moisture.
- DOE Contract Number:
- FG22-92PC92550
- OSTI ID:
- 271955
- Report Number(s):
- CONF-9510120--; ISBN 0-87335-140-1
- Country of Publication:
- United States
- Language:
- English
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