slide9.jpg

Ultimate analysis of coal samples

Print
User Rating:  / 1
PoorBest 
Published Date Written by Sara Prins

Chemical composition of the coal is defined in terms of its proximate and ultimate (elemental) analyses.

The parameters of proximate analysis are moisture, volatile matter, ash, and fixed carbon. Elemental or ultimate analysis encompasses the quantitative determination of carbon, hydrogen, nitrogen, sulfur and oxygen within the coal.

 UIS Analytical Services can assist you with your proximate and ultimate analysis needs.

The calorific value Q of coal [kJ/kg] is the heat liberated by its complete combustion with oxygen. Q is a complex function of the elemental composition of the coal. Q can be determined experimentally using calorimeters. Dulong suggests the following approximate formula for Q when the oxygen content is less than 10%:

Q = 337C + 1442(H - O/8) + 93S,

where C is the mass percent of carbon, H is the mass percent of hydrogen, O is the mass percent of oxygen, and S is the mass percent of sulfur in the coal. With these constants, Q is given in kilojoules per kilogram.

 Please contact us on This e-mail address is being protected from spambots. You need JavaScript enabled to view it. for more information and/or a quotation.

 

Copyright © 2017 UIS Analytical Services. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.
Joomla 1.6 Templates designed by Joomla Hosting Reviews