Experimental study on the influence of oxygen content in the combustion air on the combustion characteristics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU109169" target="_blank" >RIV/00216305:26210/14:PU109169 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.energy.2014.04.026" target="_blank" >http://dx.doi.org/10.1016/j.energy.2014.04.026</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.energy.2014.04.026" target="_blank" >10.1016/j.energy.2014.04.026</a>

Result language

angličtina

Original language name

Experimental study on the influence of oxygen content in the combustion air on the combustion characteristics

Original language description

This study was focused on the experimental investigation of the very promising combustion technology called as the oxygen-enhanced combustion (OEC), which uses the oxidant containing higher proportion of oxygen than in the atmospheric air, i.e. more than 21%. The work investigated and compared the characteristics of two OEC methods, namely the premix enrichment and air-oxy/fuel combustion, when the overall oxygen concentrationwas varied from 21% to 46%. The combustion tests were performed with the experimental two-gas-staged burner of low-NOx type at the burner thermal input of 750 kW for two combustion regimes e one-staged and two-staged combustion. The oxygen concentration in the flue gas was maintained in the neighborhood of 3% vol. (on dry basis). The aim of tests was to assess the impact of the oxidant composition, type of OEC method and fuel-staging on the characteristic combustion parameters in detail. The investigated parameters included the concentration of nitrogen oxides (NOx) in the flue gas, flue gas temperature, heat flux to the combustion chamber wall, and lastly the stability, shape and dimensions of flame. It was observed that NOx emission is significantly lower when the airoxy/fuel method is used compared to the premix enrichment method. Moreover, when the fuel was staged, NOx emission was below 120 mg/Nm3 at all investigated oxygen flow rates. Increasing oxygen concentration resulted in higher heating intensity due to higher concentrations of CO2 and H2O. The available heat at 46% O2 was higher by 20% compared with that at 21% O2.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20704 - Energy and fuels

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Energy

ISSN

0360-5442

e-ISSN

1873-6785

Volume of the periodical

2014

Issue of the periodical within the volume

75

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

116-126

UT code for WoS article

000343339900014

EID of the result in the Scopus database

2-s2.0-84908075674