Main Title |
Oxidation and Devolatilization of Nitrogen in Coal Char. |
Author |
Song, Y. H. ;
Beer, J. M. ;
Sarofim, A. F. ;
|
CORP Author |
Massachusetts Inst. of Tech., Cambridge. Dept. of Chemical Engineering.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. |
Publisher |
c1982 |
Year Published |
1982 |
Report Number |
EPA-R805552; EPA/600/J-91/287; |
Stock Number |
PB92-121441 |
Additional Subjects |
Coal combustion ;
Nitrogen ;
Devolatilization ;
Oxidation ;
Chaus ;
Air pollution ;
Stationary sources ;
Air pollution control ;
Reaction kinetics ;
Pulverized fuels ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB92-121441 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
9p |
Abstract |
The paper gives results of a study of the reactions of organically bound nitrogen in coal char during combustion in a laboratory furnace using size-graded char particle prepared by the pyrolysis of a Montana lignite. The time-resolved variations of nitrogen/carbon ratio during char oxidation have revealed that there is no selectivity between nitrogen and carbon loss due to oxidation, but that the char-nitrogen can undergo devolatilization in parallel with the oxidation. The paper shows that the rates of devolatilization of fuel nitrogen can be obtained from oxidation experiments under conditions were: (1) carbon devolatilization is unimportant, as in the case for char, and (2) the oxidation of nitrogen and carbon is nonselective. The oxidation rate of char-nitrogen can be given by the product of the char oxidation rate and the mole ratio of nitrogen/carbon in the char. The devolatilzation rate of char-nitrogen is correlated by first-order kinetics, showing good agreement with those of previous investigators. |