Prediction of SO2 and NOx emissions for low-grade Turkish lignites in CFB combustors

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dc.authorid0000-0002-4245-7741
dc.contributor.authorGungor, Afsin
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2009
dc.departmentNiğde ÖHÜ
dc.description.abstractThe CFB technology is widely used for combustion of coal because of its unique ability to handle low quality. high ash, high sulphur and low heating value coals. This paper presents a modeling study of pollutant emissions such as sulphur dioxide (SO2) and nitric oxide (NOx) resulting from coal combustion in a CFBC. Using this model, overall SO2 and NOx emissions are predicted for the combustion of three different kinds of low-grade Turkish lignites. The contents of these lignites are as follows: ash from 23.70% to 45.31%. sulphur from 1.81% to 8.40% and calorific values (LHV) from 10,283 to 15.215 kJ/kg. The data is obtained from two pilot scale CFBCs (50 and 80 kW) and an industrial scale CFBC (160 MW). The present study proves that CFB combustion demonstrated by both experimental data and model predictions produces low and acceptable level of SO2 and NOx emissions resulting from the combustion of low-grade lignites. Developed model can also investigate the effects of different operational parameters on overall SO2 and NOx emissions. As a result of this investigation, it is observed that increase of excess air decreases SO2 and NOx emissions. However, NOx emission increases with the operational bed velocity while SO2 emission decreases. A bigger inlet bed pressure value results in lower emissions of SO2 and NOx if other parameters are kept unchanged. (C) 2008 Elsevier B.V. All rights reserved.
dc.identifier.doi10.1016/j.cej.2008.06.019
dc.identifier.endpage400
dc.identifier.issn1385-8947
dc.identifier.issue3
dc.identifier.scopus2-s2.0-58349086125
dc.identifier.scopusqualityQ1
dc.identifier.startpage388
dc.identifier.urihttps://dx.doi.org/10.1016/j.cej.2008.06.019
dc.identifier.urihttps://hdl.handle.net/11480/5095
dc.identifier.volume146
dc.identifier.wosWOS:000263591700009
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorGungor, Afsin
dc.language.isoen
dc.publisherELSEVIER SCIENCE SA
dc.relation.ispartofCHEMICAL ENGINEERING JOURNAL
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCirculating fluidized bed
dc.subjectModeling
dc.subjectCoal combustion
dc.subjectSO2 emission
dc.subjectNOx emission
dc.titlePrediction of SO2 and NOx emissions for low-grade Turkish lignites in CFB combustors
dc.typeArticle

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