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Development of a use for Illinois coal concentrates for slurry fed gasifiers. Technical report, March 1, 1994--May 31, 1994 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
13 pages : digital, PDF file
Additional Creators
United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The primary purpose of this project is to identify and test concentrates made from preparation plant fines as to their amenability as feed for slurry fed, slagging, entrained-flow gasifiers. The high sulfur content and high BTU value of Illinois coals are particularly advantageous in such a gasifier. Elemental sulfur is recovered as a revenue producing product in gasifier technologies, and the higher BTU Illinois coal concentrate requires less water to produce a pumpable slurry than western coal (30-35% vs 45%) thereby reducing the amount of heat lost in the vaporization of entrained water. This means that 66 tons of Illinois coal concentrate, containing 13,000 BTU per pound, at 70% solids would provide as much net heat as 100 tons of 9500 BTU coal pumped at 54% solids. During the current reporting period a number of continuous flow tests were conducted in which the grades and recoveries were compared on the minus 65 mesh material from a single coal except for Test A which was minus 100 mesh. With frother dosage, feed rate, wash water rate, and air rate all held at a near constant figure, the collector rate was varied. The concentrates all contained nearly the same grade, but the recoveries of coal in those concentrates varied from quite low (36.3%) through medium recovery ranges to quite high (94.3%) in a very predictable line. One ultimate analysis on a concentrate from earlier work has been completed, and the results forwarded to Destec for their performance prediction tests. In this test they convert the chemical analysis of a given product into a heat rate determination using a proprietary formula. Part of the same product has been forwarded to William`s Technology`s Viscosity Laboratory where the pumpability of this product will be determined. All of these data will be available for the Contractors Conference in August.
Report Numbers
E 1.99:doe/pc/92521--t166
doe/pc/92521--t166
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
09/01/1994.
"doe/pc/92521--t166"
"DE94018870"
Lytle, J.M.; Khan, S.; Khan, L.A.; Ehrlinger, H.P. III; At-Taras, M.
Illinois State Univ., Normal, IL (United States)
Type of Report and Period Covered Note
Quarterly; 04/01/1994 - 06/30/1994
Funding Information
FC22-92PC92521
View MARC record | catkey: 13834268