Keywords

Coal, Pyrolysis, Oxy-fuel, Nitrogen, Pyrolysis

Abstract

Three coals were studied in a flat flame burner (FFB) to determine nitrogen release during pyrolysis as a function of the temperature from 1600 to 1900 K in an oxy-fuel environment. The oxy-fuel environment was created by replacing the background N2 with CO2 in the FFB experiments. Both types of experiments were conducted under fuel-rich conditions, with no O2 present in the postflame gases. The oxy-fuel results were compared to previous results from FFB experiments in a N2 atmosphere. A bituminous coal showed no difference in mass and nitrogen release between the two environments. The sub-bituminous coal exhibited higher mass and nitrogen release in the oxy-fuel (enhanced CO2) environment. The higher mass and nitrogen release in the oxy-fuel condition implies that another reaction is occurring with the subbituminous coal for these conditions, which is likely CO2-char gasification.

Original Publication Citation

Sowa, J. M., K. K. Kolste, and T. H. Fletcher, “Investigation of Nitrogen Release during Coal Pyrolysis in an Oxy-fuel Combustion Process,” Energy & Fuels, 24, 6411-6416 (2010).

Document Type

Peer-Reviewed Article

Publication Date

2010

Publisher

American Chemical Society

Language

English

College

Ira A. Fulton College of Engineering

Department

Chemical Engineering

University Standing at Time of Publication

Full Professor

Download

Share

COinS