Gas: heating and illuminating – Generators – Cupola
Patent
1981-04-06
1983-11-15
Jones, Larry
Gas: heating and illuminating
Generators
Cupola
48111, 48209, 48 77, 48210, 126452, B01J 300, F23J 302
Patent
active
044153392
ABSTRACT:
Coal (or other carbonaceous matter, such as biomass) is converted into a duct gas that is substantially free from hydrocarbons. The coal is fed into a solar reactor (10), and solar energy (20) is directed into the reactor onto coal char, creating a gasification front (16) and a pyrolysis front (12). A gasification zone (32) is produced well above the coal level within the reactor. A pyrolysis zone (34) is produced immediately above the coal level. Steam (18), injected into the reactor adjacent to the gasification zone (32), reacts with char to generate product gases. Solar energy supplies the energy for the endothermic steam-char reaction. The hot product gases (38) flow from the gasification zone (32) to the pyrolysis zone (34) to generate hot char. Gases (38) are withdrawn from the pyrolysis zone (34) and reinjected into the region of the reactor adjacent the gasification zone (32). This eliminates hydrocarbons in the gas by steam reformation on the hot char. The product gas (14) is withdrawn from a region of the reactor between the gasification zone (32) and the pyrolysis zone (34). The product gas will be free of tar and other hydrocarbons, and thus be suitable for use in many processes.
REFERENCES:
patent: 2694623 (1954-11-01), Welty, Jr. et al.
patent: 3993458 (1976-11-01), Antal, Jr.
patent: 4149856 (1979-04-01), Keller
patent: 4183733 (1980-01-01), Jager
patent: 4229184 (1980-10-01), Gregg
Aiman William R.
Gregg David W.
Besha Richard G.
Dixon Harold M.
Gaither Roger S.
Jones Larry
The United States of America as represented by the Department of
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