Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1994-01-11
1996-01-16
Bell, Mark L.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106478, 106DIG1, C04B 1806, C04B 1436, C04B 2004
Patent
active
054844762
ABSTRACT:
A method for preheating particles of carbonaceous fly ash prior to injecting the particles of fly ash into a combustor. In the method, the particles of fly ash are introduced into a preheating vessel. The particles of fly ash are heated in the preheating vessel to a temperature at least approximately equal to their autoignition temperature to form preheated particles of fly ash. The preheated particles of fly ash are then injected into the combustor. The heating of the particles of fly ash in the preheating vessel decreases the amount of time the particles of fly ash are in the combustor below the autoignition temperature and thereby increases the amount of carbon in the particles of fly ash oxidized within the combustor. An apparatus is provided for performing the method of the invention.
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Bell Mark L.
Electric Power Research Institute Inc.
Marcheschi Michael
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