Influence of NOx in combustion of biomass fuel

Ibukun Oluwoye, Bogdan Z. Dlugogorski, Jeff Gore, Mohammednoor Altarawneh

Research output: Chapter in Book/Report/Conference proceedingConference Paper published in Proceedingspeer-review

Abstract

Utilisation of biomass in combustion technologies alleviates several pollution-related environmental impacts. This process often occurs in thermally reactive conditions. The present study highlights the cogent influence of nitrogen oxides (NOx) in combustion of biomass (surrogate) fuel. At practical industrial fuel-rich condition, we investigated the thermal decomposition of biomass surrogate (morpholine) with oxides of NOx. A laboratory-scale tubular laminar-flow reactor enabled the flexible optimisation of reaction parameters within the temperature range of 300 °C to 1100 °C at different He-O2-NOx reactive mixtures, with Fourier transform infrared (FTIR) spectroscopy, NOx chemiluminescence and gas chromatography (μGC) serving to assess the major gas products as well as N-conversion profiles. The results offer two important remarks; (i) the presence of NOx lowers the ignition temperature of the morpholine as a result of initial nitration processes, formulating insights towards the safety implications in a typical biomass operating plants; (ii) at elevated temperature above 800 °C, morpholine converts NOx at approximately 80 % reduction efficiency, depending on oxygen abundancy of the system. These findings shed light on biomass-NOx interactions occurring in various industrial processes, such as in thermal firing of solid biomass fuels, and particularly, in fuel stagging technology utilising biomass as the major reburn fuel.

Original languageEnglish
Title of host publication11th Asia-Pacific Conference on Combustion 2017
Place of PublicationUnited States
PublisherCombustion Institute China Section
Pages1112-1115
Number of pages4
ISBN (Print)9781510856462
Publication statusPublished - 2017
Externally publishedYes
Event11th Asia-Pacific Conference on Combustion, ASPACC 2017 - Sydney, Australia
Duration: 10 Dec 201714 Dec 2017

Conference

Conference11th Asia-Pacific Conference on Combustion, ASPACC 2017
CountryAustralia
CitySydney
Period10/12/1714/12/17

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