Ali, U. orcid.org/0000-0001-9515-0148, Akram, M., Font Palma, C. et al. (2 more authors) (2017) Part-load Performance of Direct-firing and Co-firing of Coal and Biomass in a Power Generation System Integrated with a CO2 Capture and Compression System. Fuel, 210. pp. 873-884. ISSN 0016-2361
Abstract
Bioenergy with Carbon Capture and Storage (BECCS) is recognised as a key technology to mitigate CO2 emissions and achieve stringent climate targets due to its potential for negative emissions. However, the cost for its deployment is expected to be higher than for fossil-based power plants with CCS. To help in the transition to fully replace fossil fuels, co-firing of coal and biomass provide a less expensive means. Therefore, this work examines the co-firing at various levels in a pulverised supercritical power plant with post-combustion CO2 capture, using a fully integrated model developed in Aspen Plus. Co-firing offers flexibility in terms of the biomass resources needed. This work also investigates flexibility within operation. As a result, the performance of the power plant at various part-loads (40%, 60% and 80%) is studied and compared to the baseline at 100%, using a constant fuel flowrate. It was found that the net power output and net efficiency decrease when the biomass fraction increases for constant heat input and constant fuel flow rate cases. At constant heat input, more fuel is required as the biomass fraction is increased; whilst at constant fuel input, derating occurs, e.g. 30% derating of the power output capacity at firing 100% biomass compared to 100% coal. Co-firing of coal and biomass resulted in substantial power derating at each part-load operation.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 Elsevier. This is an author produced version of a paper subsequently published in Fuel. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Co-firing; Post-combustion; Part-load; CO2 compression; BECCS |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/J017302/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 22 Jun 2018 11:15 |
Last Modified: | 18 Sep 2018 00:38 |
Published Version: | https://doi.org/10.1016/j.fuel.2017.09.023 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.fuel.2017.09.023 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:132160 |
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Filename: Part-load Performance of Co-firing Coal and Biomass with Post-Combustion Capture and Compression.pdf
Licence: CC-BY-NC-ND 4.0