Ammonia chemistry in a flameless jet

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Zieba M, Brink A, Schuster A, Hupa M, Scheffknecht G
Publisher: ELSEVIER SCIENCE INC
Publication year: 2009
Journal: Combustion and Flame
Journal acronym: COMBUST FLAME
Volume number: 156
Issue number: 10
Start page: 1950
End page: 1956
Number of pages: 7
ISSN: 0010-2180


Abstract

In this paper, the nitrogen chemistry in an ammonia (NH(3)) doped flameless jet is investigated using a kinetic reactor network model. The reactor network model is used to explain the main differences in ammonia chemistry for methane (CH(4)) containing fuels and methane-free fuels. The chemical pathways of nitrogen oxides (NO(x)) formation and destruction are identified using rate-of-production analysis. The results show that in the case of natural gas, ammonia reacts relatively late at fuel lean condition leading to high NOx emissions. In the pre-ignition zone, the ammonia chemistry is blocked due to the absence of free radicals which are consumed by methane-methyl radical (CH(3)) conversion. In the case of methane-free gas, the ammonia reacted very rapidly and complete decomposition was reached in the fuel rich region of the jet. In this case the necessary radicals for the ammonia conversion are generated from hydrogen (H(2)) oxidation.


Keywords

Ammonia conversion, Flameless combustion, Fuel-NO(x)

Last updated on 2020-17-01 at 02:52