Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1995-05-08
1998-08-18
Lithgow, Thomas M.
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
210696, 210697, 210768, 210769, 209 5, 209 10, 209 17, 209164, 209166, 44626, 44622, 44624, 44627, 44505, B03D 300, B01D 2100, B01D 2128, C10L 910
Patent
active
057954844
ABSTRACT:
An ultra-fine coal particle fraction forms a coal product with particles that are dilatant due to the mechanical stripping of the clay contaminates from the coal surface and the subdividing of the clay to clay platelets which are peptized to maintain discreetness in an aqueous slurry. The coal particles are unflocculated and can produce an aqueously permeable barrier on a sieve. The ultrafine coal product has an increase of 100-150 BTU per pound and when combusted reduced Nox production of 20-40% is realized. In a 15.times.0 micron coal fraction, the sulphur content is significantly reduced.
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Lithgow Thomas M.
Poff Clifford A.
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