Gas: heating and illuminating – Processes – Coal and water
Patent
1982-04-06
1984-09-04
Kratz, Peter F.
Gas: heating and illuminating
Processes
Coal and water
48210, 60 3902, 201 19, 201 38, C10J 310, C10J 314, C10J 318
Patent
active
044694881
ABSTRACT:
An improved method for generating gas from coal including caking and high sulfur coals, in a completely enclosed system wherein no oxygen or air is used to burn a portion of the coal and/or char to produce heat for the reaction. The heat for the reaction of the instant invention is produced by electric induction coils surrounding a vertical retort which possesses a plurality of compartments or cells whose walls are heated by induction. Energy requirement is reduced by pressurizing and methanating within the compartments in order to benefit from exothermic reaction of the methane formation. The coal charged is heated by said walls so that the coal is converted from coal to coke or char by driving the volatiles from the coal in a controlled and efficient manner. The char is further kept hot by the same heated walls of said compartments and also by direct induction to make possible the generation of gas, mainly CO and H.sub.2 by reacting steam with said hot char. The coal is charged at the top of said retort, in a sealed manner and the ash removed from the bottom without causing pollution. The conditions within said compartments are such that the CO formed is made to react with the H.sub.2 in the coal as the CO rises to form CH.sub.4 and H.sub.2 O and give off heat to result in reducing the heat energy induced by the induction coils. The hot generated methanated gas rises within said retort and leaves it at the top thence it is directed to a desulfurizer for cleaning. The gas is then used in different ways.
REFERENCES:
patent: 1097513 (1914-05-01), Benner
patent: 1524784 (1925-02-01), Bartolomeis et al.
patent: 1713189 (1929-05-01), Marshall
patent: 2509921 (1945-11-01), Gwynn
patent: 2683657 (1954-07-01), Garbo
patent: 4389283 (1983-06-01), Calderon
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