Keywords

Coal, Pyrolysis, Nitrogen, Model, CPD Model

Abstract

A model that predicts the amount and distribution between tar and light gas of nitrogen released during devolatilization has been developed and incorporated into the chemical percolation devolatilization (CPD) model. This work represents the first volatile nitrogen release model developed on the basis of ¹³C NMR measurements of coal structure. This work also represents the first volatile nitrogen release model evaluated by comparing model predictions with chemical structural features of the char (determined by ¹³C NMR spectral analyses). The model is limited to nitrogen release during primary pyrolysis, and assumes that all light-gas nitrogen is HCN. Model predictions of nitrogen release compare well with measured values for most coals and devolatilization conditions tested.

Original Publication Citation

Genetti, D. and T. H. Fletcher, "Modeling Nitrogen Release during Devolatilization on the Basis of Chemical Structure of Coal," Energy and Fuels, 13, 1082-1091 (1999).