Excerpt from Central District Bituminous Coals as Water-Gas Generator Fuel
About two-thirds of the manufactured gas supplied to the public by the gas plants in the Illinois district is carbureted water gas. The leading generator fuel is coke, made in by-product coke ovens or ... in retor'ts, chie¿y from eastern gasr coals. During the fall and winter of 1917 - 18, when the demand for coke by war industries and the restrictions of the Fuel Administration in connection with the transportation of coke from eastern States made it almost impossible for many gas companies to obtain their coke requirements, several water-gas plants had to use bituminous coal as generator fuel. Many operating difficulties were encountered, some of which were solved more or less satisfactorily in different plants. A number of plants attacked the problem rather blindly because facilities for making tests were lacking and because technical men were too busy with labor and supply problems to study thoroughly the conditions involved or to ascertain what other plants had done with this fuel. It was therefore with the hope of assisting the gas industry during this critical period, and of promoting the use. Of Central District coals for gas making, that the Illinois Mining Investigations, a joint agency of the U. S. Bureau of Mines, the University of Illinois, and the Illinois Geological Survey Division undertook the tests discussed in this paper.
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