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Numerical analysis of flow and combustion of Coal-Ammonia blend in coal-fired furnace

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dc.citedby2
dc.contributor.authorRekhraj S.K.en_US
dc.contributor.authorHasini H.en_US
dc.contributor.authorid58919265600en_US
dc.contributor.authorid6507435998en_US
dc.date.accessioned2025-03-03T07:43:52Z
dc.date.available2025-03-03T07:43:52Z
dc.date.issued2024
dc.description.abstractCo-firing ammonia (NH3) in coal-fired power plants presents an attractive method to expedite the global decarbonization process. Nevertheless, the challenge lies in reconciling the need for higher temperatures within the furnace with the imperative of maintaining low nitrogen oxides (NOx) emissions, which limits the widespread use of NH3 as a fuel. In this article, the flow and combustion of coal-NH3 blends in a 3 ? 700 MW tangentially-fired utility coal boiler furnace are investigated using Computational Fluid Dynamics (CFD). The impact of NH3 blending ratios is examined through numerically simulated combustion involving five co-firing ratios (CRs) of NH3, including 0%, 10%, 20%, 30%, and 50%. Various combustion properties are assessed, including the furnace?s temperature profile, flow distribution, species emissions, pollutant formation, and heat generation. To validate the approach, single coal and coal blend simulations performed depicted reasonable agreement in predicting furnace flame temperatures. The predicted flue gas temperature exhibited a decrease with an increase in NH3 CR, leading to a reduction in the furnace?s heat generation. Regarding flow characteristics, there was a notable increase in velocity as the concentration of NH3 was raised. The elevated NH3 content correlated with an observed rise in oxygen (O2) residue in the rear pass, coupled with a decrease in both carbon dioxide (CO2) and carbon monoxide (CO) concentrations. Pollutant formation, assessed in terms of nitrogen oxide (NO) emissions, revealed an increase in concentration with the rise in NH3 CR. Indeed, these findings suggest a promising strategy for adopting NH3 as a viable alternative to coal, representing an effective carbon-neutral fuel for the future. ? 2024 IOP Publishing Ltden_US
dc.description.natureFinalen_US
dc.identifier.ArtNo15511
dc.identifier.doi10.1088/2631-8695/ad299b
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85186688380
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85186688380&doi=10.1088%2f2631-8695%2fad299b&partnerID=40&md5=5d0e377cc5aee54a277246491877a6bc
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/36681
dc.identifier.volume6
dc.publisherInstitute of Physicsen_US
dc.relation.ispartofAll Open Access; Hybrid Gold Open Access
dc.sourceScopus
dc.sourcetitleEngineering Research Express
dc.subjectAmmonia
dc.subjectBlending
dc.subjectCarbon dioxide
dc.subjectCarbon monoxide
dc.subjectCoal combustion
dc.subjectCoal fired boilers
dc.subjectComputational fluid dynamics
dc.subjectFossil fuel power plants
dc.subjectFurnaces
dc.subjectNitrogen oxides
dc.subjectCo-firing
dc.subjectCoal blending
dc.subjectCoal-ammonia
dc.subjectCoal-fired furnace
dc.subjectCoal-fired power plant
dc.subjectCombustion of coal
dc.subjectDecarbonisation
dc.subjectFlow of coal
dc.subjectNitrogen oxide emissions
dc.subjectPollutant formation
dc.subjectCoal
dc.titleNumerical analysis of flow and combustion of Coal-Ammonia blend in coal-fired furnaceen_US
dc.typeArticleen_US
dspace.entity.typePublication
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