Proximate to Ultimate Coal Analysis
Proximate to Ultimate Coal Analysis
(OP)
Gentlemen
Do any of you know a method by the ultimate coal analysis can be estimated from the proximate analysis?
athomas236
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Proximate to Ultimate Coal Analysis
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RE: Proximate to Ultimate Coal Analysis
I may be wrong, but I am fairly sure that there is no way to estimate the ultimate coal analyis from the proximate coal analysis.
Milton Beychok
(Visit me at www.air-dispersion.com)
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RE: Proximate to Ultimate Coal Analysis
I have found the following empirical relationship to convert ‘proximate analysis’ to ‘ultimate analysis’ for Indian coal.
%C = 0.97C+ 0.7(VM+0.1A) - M(0.6-0.01M)
%H2 = 0.036C + 0.086 (VM -0.1xA) - 0.0035M^2 (1-0.02M)
%N2 = 2.10 -0.020 VM
Where
C = % of fixed carbon
A = % of ash
VM = % of volatile matter
M = % of moisture
Proximate analysis in on air-dried basis and ultmate analysis is on dry basis.
The reason for my question is to find out if there are other methods.
Regards,
athomas236
RE: Proximate to Ultimate Coal Analysis
from carbone residue 10%, ash 0.05% to carbone residue 14%, ash 0.08%?
RE: Proximate to Ultimate Coal Analysis
There are some tables out there -- textbooks, internet sites etc. -- that contain both ultimate and proximates coal analysis composition for common coals.
This approach can be used as the first step when making quick engineering evaluations ...
Thanks,
Gordan Feric, PE
Engineering Software
http://members.aol.com/engware
RE: Proximate to Ultimate Coal Analysis
athomas236