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Article:Daood, S.S., Javed, M.T., Gibbs, B.M. et al.(1 more author) (2013) NOx control in coal combustion by combining biomass co-firing, oxygen enrichment and SNCR. Fuel, 105. 283 -292. ISSN 0016-2361 https://doi.org/10.1016/j.fuel.2012.06.087 eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Abstract:There has been renewed interest in evaluating the effect of biomass co-firing on the multi-pollutant control system such as Selective Non-catalytic Reduction (SNCR) and oxygen enrichment. Emissions savings have been attained by combining SNCR and biomasscoal co-combustion under various oxygen enriched staged air levels. Biomasses with higher tendency of generating CO produced better reduction in NO x emission with and without using SNCR. NO reduction of around 80% were attained using SNCR for 15% and 50% blending ratios of biomasses at 21% overall O 2 concentration for unstaged combustion.Whereas, a range of 40%-80% NO reductions were attained for RC2 (a Russian Coal) and 15% co-fired biomasses with 3.1%-5.5 % overall O 2 concentration at 22%-31% levels of flame staging. Moreover, it was found that better NO x removal efficiency was attained for higher NO x emission baselines under both oxygen enriched and normal firing conditions. However, SNCR NO x control for both coal or coal-biomass blends was observed to produce higher NO x reductions during O 2 enrichment, believed to be due to the self-sustained NO x reduction reactions. Hence, NO x control by SNCR, oxygen enriched co-firing in the furnaces would result in lower NO x emissions and higher carbon dioxide concentration for efficient scrubbing with better carbon burnouts.Key words: NOx, SNCR, biomass cofiring, coal 1.IntroductionSome conventional coal fired power stations of Europe are under threat of closure, due to enforcement in 2020 (previously 2016), of the Large Combustion Plant Directive (LCPD)[1]. This is due to the economics of implementing control technologies to reduce the emission of NO x to lower than 200mg/Nm 3 . Moreover, UK is also expected to fail in meeting the NO x emissions ceiling target set by the European National Emissions Ceiling Directive (ENECD)[2]. Hence, the ENECD is reviewing to produce new emission cei...

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eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Lignite Block-8 have been reported. The reported data will be an addition to the existing