Reactor selection and design for coal-direct chemical looping combustion production of hydrogen

Trevor D Hadley, David Siew, Kok-seng Lim, Sankar Bhattacharya

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Chemical looping (CL) is reported as a promising technology for fossil fuel combustion because of its ability to produce a more concentrated carbon dioxide stream. This paper uses computational models to investigate the production of H2 via the Coal-Direct CL (CDCL) process using Victorian brown coal and an iron oxide as the oxygen carrier. The coal is gasified in-situ with the metal oxide, after which it is re-oxidised with steam and air. A concentrated H2 stream is produced from the oxidation with steam. Two different types of reactor configurations are examined, both consisting of a fuel reactor, air reactor and steam reactor, being a series and a parallel arrangement of the three reactors. Plant designs for 1 tpd (metric tonne per day) H2 production capacity were evaluated using a one-dimensional pressure balance model and ASPEN Plus®. The designs were compared in terms of operating pressure, engineering design and operability, steam, water and energy requirements.

Original languageEnglish
Title of host publicationCFB-11: Proceedings of the 11th International Conference on Fluidized Bed Technology
PublisherChemical Industry Press
Pages881-886
Number of pages6
Publication statusPublished - 2014
EventInternational Conference on Fluidized Bed Technology 2014 - Beijing, China
Duration: 14 May 201417 May 2014
Conference number: 11th

Conference

ConferenceInternational Conference on Fluidized Bed Technology 2014
Abbreviated titleCFB 2014
CountryChina
CityBeijing
Period14/05/1417/05/14

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