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Return to Abstracts of Literature 1500-1749
1620. JENSON, O. Carbonization by Electricity. Gas Jour., vol. 261, 1950, pp. 270-271.
Abstract of a paper presented at the Untied Nations Scientific Conference on the Conservation and Utilization of Resources, Lake Success, N. Y., is reviewed. A new electric process is described for the carbonization of noncoking bituminous coal, Spitzbergen. Carbonized briquets made from the crushed coal are charged into the top of the vertical shaft and preheated by hot gases. A diagram of this operation is shown. At the lower end of the shaft is an electric furnace containing 2 sets of 3-phase electrodes. The carbonized and conductive briquets form the resistor element, which provides the heat for the process. Cold gas, introduced at the base of the furnace, cools the hot coke and is preheated. The gas is heated further to 1,000° in the electric furnace and reacts with the hot C, forming CO and H2. As the hot gas rises in the furnace, its sensible heat serves to carbonize the coal briquets. One short ton of coal yields 1,250-1,300 lb. coke briquets, 20-25 gal. low-temperature tar, and 24,000 cu. ft. of gas. Power consumption is about 40 kw.-hr./M cu. ft. of gas produced. The gas has a H2:CO ratio of 2.6, and to produce synthesis gas, H2:CO=2, it is only necessary to add blue water gas, for example, by adding steam to the circulating gas. A plant for the synthesis of gasoline capable of converting 1.5 million short tons of Spitzbergen coal annually will yield about 700,000 tons of low-ash coke briquets, 750,000 bbl. of low-temperature coal tar, and 2 million bbl. of gasoline and diesel fuel. The power requirements would be about 300,000 kw. Estimated production cost for the gasoline will be about $0.20/gal.
JERDAN, D. S. See abs. 296.
JESSEN, V. See abs. 133, 134.
JINKINGS, A. J. See abs. 326.
JINTA, T. See abs. 1119, 1120.