Experimental investigation of hydrogen enriched natural gas combustion with a focus on nitrogen oxide formation on a semi-industrial scale

Stefan Schwarz*, Georg Daurer, Christian Gaber, Martin Demuth, Christoph Hochenauer

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

Abstract

Combustion of hydrogen-enriched natural gas is a valuable short-term strategy for reducing CO2 emissions from high temperature industrial heating. This paper presents several experiments on combustion characteristics and the formation of nitrogen oxides. The experiments included hydrogen contents up to 100% and fuel heat inputs up to 75 kW. Water-cooled lances were used to influence the furnace temperature. The analysis includes the distribution of furnace temperatures, the composition of flue gas, the cooling capacity of the lances under steady-state operating conditions, and OH*-chemiluminescence imaging of the near burner region. The presented results demonstrate the dependence of furnace conditions and NOX formation on various factors, such as different air inlet fluxes, furnace temperature, and fuel composition, for constant heat inputs. Efficiency increased by up to 5.5% and significant changes in flame shaped along with a maximum increase in NOX emissions when comparing natural gas to hydrogen was measured at 167%.

Originalspracheenglisch
Seiten (von - bis)173-183
Seitenumfang11
FachzeitschriftInternational Journal of Hydrogen Energy
Jahrgang63
DOIs
PublikationsstatusVeröffentlicht - 18 Apr. 2024

ASJC Scopus subject areas

  • Erneuerbare Energien, Nachhaltigkeit und Umwelt
  • Feuerungstechnik
  • Physik der kondensierten Materie
  • Energieanlagenbau und Kraftwerkstechnik

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