Numerical study of an industrial burner to optimise NOx emissions and to evaluate the feasibility of hydrogen-enriched fuel

Research output: Contribution to journalArticleResearchpeer-review

External Organisational units

  • K1-MET GmbH; Stahlstraße 14; Linz, 4020, Austria
  • Ebner Industrieöfenbau GmbH


Reducing NO x emissions from industrial burners is a significant concern due to their harmful environmental and human health impact. A computationally efficient numerical model was developed and validated using a detailed GRI 3.0 chemistry mechanism to simulate the combustion process and precisely predict the NO x emissions from industrial burners. The numerical model was implemented to reduce NO x emissions by varying the burner's primary to secondary air mass flow ratio. An optimum nozzle diameter was proposed to abate NO x emissions by a factor of 0.845. A feasibility study on the optimised burner was conducted by blending up to 50% hydrogen by volume with natural gas by maintaining the same burner power output. Results showed that the burner exhibited similar flame characteristics until 40% hydrogen was added to natural gas. A 41.8% increase in NO and a 76.8% decrease in CO emissions were observed by enriching natural gas with 50% hydrogen.


Original languageEnglish
Pages (from-to)1210-1220
Number of pages11
JournalInternational Journal of Hydrogen Energy
Issue numberPart C, 2 January
Publication statusE-pub ahead of print - 12 Aug 2023