Actions for Formulas for calculating the heating value of coal and coal char [electronic resource] : development, tests, and uses

Email RIS file
Bookmark
Report an Issue

Formulas for calculating the heating value of coal and coal char [electronic resource] : development, tests, and uses

Published
Chicago, Ill : Institute of Gas Technology, 1980.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
Pages: 12 : digital, PDF file
Additional Creators
Institute of Gas Technology and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
A new five-term formula for calculating the heating value of coal from its carbon, hydrogen, sulfur and ash content was obtained by regression analysis of data on 775 samples of US coals of all ranks. The standard deviation of the calculated value from the observed value was 129 Btu/lb, compared to apparent standard deviations ranging from 178 to 229 Btu/lb obtained from the Dulong, Boie, Grummel and Davis, and Mott and Spooner formulas. An analysis of the variance of the difference between observed and calculated values obtained with the new formula on IGT coal data indicated that at least 77% is contributed by the variance of the experimental determinations; the remainder can be attributed to the effect of mineral matter and outlying experimental determinations. Application of the formula to coal oxidatively pretreated at 750/sup 0/F to destroy agglomerating properties yields a bias indicating that the heat of formation is higher than expected from elemental and ash composition by about 140 Btu/lb; this is attributed to differences in structure (bonding). The formula gives satisfactory results on higher temperature HYGAS chars, and with application of a bias correction on pretreated coal. Thus, the formula is advantageous for use in the computer modelling of coal conversion processes and for monitoring test data on coal and char.
Report Numbers
E 1.99:conf-800814-25
conf-800814-25
Subject(s)
Note
Published through SciTech Connect.
01/01/1980.
"conf-800814-25"
180. American Chemical Society meeting/2. chemical congress of the North American Continent, San Francisco, CA, USA, 24 Aug 1980.
Mason, D.M.; Gandhi, K.
Funding Information
AC01-76ET10251
View MARC record | catkey: 23505536