Publication detail

LOW NOX BURNERS – RECENT DEVELOPMENT, EQUIPMENT, EXPERIENCE, MODELLING

BÉBAR, L. STEHLÍK, P. ORAL, J. KERMES, V. ČANĚK, J.

Czech title

Nízkooxidické hořáky poslední vývoj, zařízení, zkoušky, modelování

English title

LOW NOX BURNERS – RECENT DEVELOPMENT, EQUIPMENT, EXPERIENCE, MODELLING

Type

conference paper

Language

en

Original abstract

This paper describes possible ways of prediction of nitrogen oxides formation during combustion of hydrocarbon fuels. Mathematical model based on experimental data acquired from the testing facility has been developed. The model enables to predict – at a high probability measure – the extent of nitrogen oxides emissions. The mathematical model of nitrogen oxide formation relies on the application of simplified kinetic equations describing the formation of nitrogen oxides at so-called equivalent temperature. It is a semi-empirical model that comes out of experimental knowledge. An important role played by the burner design itself has been emphasized and therefore an important supplementary parameter of the model is the characteristic of the burner design. It has been established that there was a good agreement between experimental data and those calculated by the application of the model to various conditions marked out by different combustion parameters in the combustion chamber. The results obtained by application of the model respect the influence of parameters validated by industrial practice that control the formation of nitrogen oxides in the course of fuel combustion. Such parameters – first of all – are the temperature in the combustion chamber and the concentration of the substances taking part in the reaction. By application of the model, it is possible to assess the consequence of e.g. the surplus of combustion air, the increase of temperature of combustion air, the supply of inert gas etc. on the nitrogen oxides emissions of the operating burner under evaluation. Efficient combining of experience and sophisticated approach together with importance of thus access for an improved design are shown.

English abstract

This paper describes possible ways of prediction of nitrogen oxides formation during combustion of hydrocarbon fuels. Mathematical model based on experimental data acquired from the testing facility has been developed. The model enables to predict – at a high probability measure – the extent of nitrogen oxides emissions. The mathematical model of nitrogen oxide formation relies on the application of simplified kinetic equations describing the formation of nitrogen oxides at so-called equivalent temperature. It is a semi-empirical model that comes out of experimental knowledge. An important role played by the burner design itself has been emphasized and therefore an important supplementary parameter of the model is the characteristic of the burner design. It has been established that there was a good agreement between experimental data and those calculated by the application of the model to various conditions marked out by different combustion parameters in the combustion chamber. The results obtained by application of the model respect the influence of parameters validated by industrial practice that control the formation of nitrogen oxides in the course of fuel combustion. Such parameters – first of all – are the temperature in the combustion chamber and the concentration of the substances taking part in the reaction. By application of the model, it is possible to assess the consequence of e.g. the surplus of combustion air, the increase of temperature of combustion air, the supply of inert gas etc. on the nitrogen oxides emissions of the operating burner under evaluation. Efficient combining of experience and sophisticated approach together with importance of thus access for an improved design are shown.

Keywords in Czech

NOx, oxidy dusíku, hořáky, modelování

Keywords in English

NOx, Nitrogen oxides, Burners, Modelling

RIV year

2001

Released

14.05.2001

Publisher

University of Maryland

Location

Philadelphia, Pennsylvania

Book

International Conference on Incineration & Thermal Treatment Technologies

Pages count

14

BIBTEX


@inproceedings{BUT6580,
  author="Ladislav {Bébar} and Petr {Stehlík} and Jaroslav {Oral} and Vít {Kermes} and Josef {Čaněk},
  title="LOW NOX BURNERS – RECENT DEVELOPMENT, EQUIPMENT, EXPERIENCE, MODELLING",
  booktitle="International Conference on Incineration & Thermal Treatment Technologies",
  year="2001",
  month="May",
  publisher="University of Maryland",
  address="Philadelphia, Pennsylvania"
}