Method of and apparatus for efficiently combusting oil shale

Details Method of and apparatus for efficiently combusting oil shale Method of and apparatus for efficiently combusting oil shale

1997-05-29

2000-08-15

Bennett, Henry

Furnaces

Process

Burning pulverized fuel

110101CF, 110101CA, 110186, 110101C, F23D 100

Patent

active

061019593

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.

REFERENCES:
patent: 4313387 (1982-02-01), Sato
patent: 4517902 (1985-05-01), Christian
patent: 4893315 (1990-01-01), Homer et al.
patent: 4984524 (1991-01-01), Mindermann et al.
"Spouted Beds" by Kishan B. Mathur and Norman Epstein, 1974, Academic Press .

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