CUED Publications database

Development and performance of iron based oxygen carriers containing calcium ferrites for chemical looping combustion and production of hydrogen

Ismail, M and Liu, W and Dunstan, MT and Scott, SA (2016) Development and performance of iron based oxygen carriers containing calcium ferrites for chemical looping combustion and production of hydrogen. International Journal of Hydrogen Energy, 41. pp. 4073-4084. ISSN 0360-3199

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Abstract

Copyright © 2015 The Authors. 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 Fe 2 O 3 , 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 Fe 2 O 3 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 Ca 2 Fe 2 O 5 .

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div A > Energy
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 18:58
Last Modified: 16 Nov 2017 02:11
DOI: