Method of and apparatus for efficiently combusting oil shale
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United States of America Patent
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Aug 15, 2000
Issued Date -
N/A
app pub date -
May 29, 1997
filing date -
Jul 28, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Oil shale having a relatively wide range of heating value is combusted by supplying the oil shale and a further fuel having a heating value greater than the heating value of the oil shale to a combustor. The oil shale is fed to the combustor at a substantially fixed rate, independently of the heating value of the oil shale, and the further fuel is fed to the combustor at a rate such that the heating value of the fuel in the combustor remains substantially constant in the face of variations in the heating value of the oil shale. Preferably, the temperature of combustion of the products of combustion is the parameter used to control the rate at which the further fuel is fed to the combustor.
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