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Thermal treatment for chlorine removal from coal. [Quarterly] technical report, March 1, 1992--May 31, 1992 [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
24 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
It is the goal of this research to provide the technical basis for development of a process to remove chlorine from coal prior to combustion, based on a thermal treatment process. Under the reaction conditions employed, the behavior of other trace elements of concern will also be evaluated. The recovery of the chlorine removed from the coal as a marketable byproduct, calcium chloride suitable for use as a road deicer, is also being investigated using a novel absorption/crystallization device. A value of 6.29 hr{sup −1} was determined for the dechlorination rate constant of IBC-109 coal at 385°C, and an activation energy of 34.7 kcal/mol was obtained from an Arrhenius plot over the temperature range of 300--385°C. A significant removal of chlorine (84.3%) was attained while retaining 92% of the energy of the coal in the solid product by preheating the coal at lower temperatures prior to a six-minute reaction at 385°C. Volatiles lost during the thermal dechlorination may be recovered for their heating value, and/or as a source of chemical feedstocks; this aspect will require further study, but it appears that the overall energy balance on the system should prove to be favorable. The design of the bench scale fluidized bed thermal dechlorination unit has been completed, and components ordered. Operation of this system should provide the information required for further scale-up of the process.
Report Numbers
E 1.99:doe/pc/91334--t73
doe/pc/91334--t73
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
10/01/1992.
"doe/pc/91334--t73"
"DE93000522"
Muchmore, C.B.; Hesketh, H.E.; Chen, Han Lin.
Southern Illinois Univ., Carbondale, IL (United States)
Type of Report and Period Covered Note
Quarterly; 04/01/1992 - 06/30/1992
Funding Information
FG22-91PC91334
View MARC record | catkey: 13839440