期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 41, 期 7, 页码 4073-4084出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2015.11.066
关键词
Chemical looping combustion; Chemical looping hydrogen production; Carbon dioxide capture; Fluidised bed; Calcium ferrites
资金
- Engineering and Physical Sciences Research Council (EPSRC) [EP/I070912/1]
- IDB (Islamic Development Bank) - Cambridge International Scholarship
- National Research Foundation (NRF), Prime Minister's Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) programme
- Engineering and Physical Sciences Research Council [EP/I010912/1] Funding Source: researchfish
- EPSRC [EP/I010912/1] Funding Source: UKRI
Chemical looping combustion (CLC) is a cyclic process in which an oxygen carrier (OC), is firstly reduced by a fuel, e.g. syngas, and then oxidised in air to produce heat. If the OC is Fe2O3, the oxidation can take place in steam to produce hydrogen, i.e. chemical looping hydrogen production (CLH). This paper presents an investigation of CaO modified Fe2O3 OCs for CLC and CLH. The performance of the mechanically mixed OCs were examined in a thermogravimetric analyser and a fluidised bed. It was found that the addition of CaO gives cyclic stability and additional capacity to produce hydrogen via CLH, at the expense of reduced oxygen carrying capacity for CLC, owing to the formation of calcium ferrites, such as Ca2Fe2O5. Copyright (C) 2015, The Authors. Published by Elsevier Ltd on behalf of Hydrogen Energy Publications, LLC. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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