Record Display for the EPA National Library Catalog

RECORD NUMBER: 22 OF 26

OLS Field Name OLS Field Data
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 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 02/24/1992
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.