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International Journal of Energy for a Clean Environment
SJR: 0.195 SNIP: 0.435 CiteScore™: 0.74

ISSN Imprimir: 2150-3621
ISSN En Línea: 2150-363X

International Journal of Energy for a Clean Environment

Formerly Known as Clean Air: International Journal on Energy for a Clean Environment

DOI: 10.1615/InterJEnerCleanEnv.v6.i4.30
pages 393-408

STUDY OF THE EVOLUTION OF NITROGEN COMPOUNDS DURING COAL DEVOLATILIZATION

A. Arenillas
Instituto Nacional del Carbón (CSIC), Apartado 73, 33080 Oviedo, Spain
F. Rubiera
Instituto Nacional del Carbón (CSIC), Apartado 73, 33080 Oviedo, Spain
A. H. Moreno
Instituto Nacional del Carbón (CSIC), Apartado 73, 33080 Oviedo, Spain
C. Pevida
Instituto Nacional del Carbón (CSIC), Apartado 73, 33080 Oviedo, Spain
J. J. Pis
Instituto Nacional del Carbón (CSIC), Apartado 73, 33080 Oviedo, Spain

SINOPSIS

In this work, simultaneous thermogravimetric-mass spectrometric (TG-MS) analysis was used to study the release of various nitrogen compounds during pyrolysis of different-rank coals. The influence of coal rank on the evolution of volatile compounds was also considered. In addition, a series of coal chars with different burn-off degrees were obtained in a bench-scale fluidized bed reactor, using the same parent coal. The evolution of gaseous compounds arising from the thermal treatment of the partially burned chars was studied in the TG-MS system. It was found that the different chemical structures of the chars exerted some influence on the evolution of the gaseous compounds during the devolatilization process. In addition, devolatilization tests were conducted in a bench-scale fluidized bed reactor. During these tests, special attention was given to the formation of N2O.