Shao, B., Zhu, Y. orcid.org/0000-0002-6277-7806, Hu, J. orcid.org/0000-0002-3020-0148 et al. (7 more authors) (2024) Chemical engineering solution for carbon neutrality in cement industry: Tailor a pathway from inevitable CO2 emission into syngas. Chemical Engineering Journal, 483. 149098. ISSN 1385-8947
Abstract
Cement production is one of the largest industrial sources of CO2 emissions due to the thermal decomposition of limestone (CaCO3). We integrate the chemical engineering strategy into the cement production and propose a novel process of “Carbonate Dry Reforming of Methane (CaDRM)” that converts the limestone (CaCO3) directly into the cement clinker precursor (CaO) and syngas (CO + H2) through reacting with methane (CH4). Thermodynamic analysis indicates the reaction temperature of CaDRM is lowered by at least 200 °C compared with CaCO3 thermal decomposition. Lab-scale experimental studies show a 95 % CaO yield at a 91 % syngas selectivity and 90 % CH4 conversion in CaDRM using cement raw meal at 700 °C. Process simulation scale-up and economic analysis indicate CaDRM pathway can reduce 37.2 % CO2 emission in comparison with the conventional CaCO3 thermal decomposition pathway. More significantly, the net profit of $271.0/t (clinker) can be achieved by the value-added syngas products and the energy saving. The economic and environmental benefits of the proposed CaDRM strategy can help its future commercial deployment.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2024 The Authors. Except as otherwise noted, this author-accepted version of a journal article published in Chemical Engineering Journal is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | Carbonate dry reforming of methane; Syngas; Economic analysis; Carbon emission reduction |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Chemical and Biological Engineering (Sheffield) |
Funding Information: | Funder Grant number EUROPEAN COMMISSION - HORIZON 2020 101007963 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 19 Feb 2024 16:41 |
Last Modified: | 19 Feb 2024 16:46 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.cej.2024.149098 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:209406 |