Thermochemical syngas generation via solid looping process: An experimental demonstration using Fe-based material
Thermochemical syngas generation via solid looping process: An experimental demonstration using Fe-based material
Chemical looping is investigated for the production of syngas via reforming or reverse water gas shift in a packed bed reactor using 500 g of Fe on Al2O3 was demonstrated. Oxidation, reduction of the OC and subsequent catalytic reactions of reforming or reverse water gas shift were examined in a temperature range of 600–900 °C and a pressure range of 1–3 bara at high flowrate. Different inlet gas compositions were explored for the considered gas–solid and catalytic reaction stages. Oxidation with air successfully heated the reactor. CH4 resulted ineffective at reducing the Fe-based oxygen carrier while H2 and CO-rich stream were able to achieve full reduction to FeO of the material. In terms of catalytic activity, the maximum conversion of CH4 achieved during the reforming was limited to 62.8 % at 900 °C and 1 bara.
Thermally integrated chemical looping reverse water gas shift was studied as option for CCU in combination with green H2 to produce renewable fuels. A H2/CO value of 2 could be achieved by feeding H2/CO2 of 2. The pressure did not substantially affect the conversion and the bed did not present carbon deposition.
The ability of a Fe-based packed bed chemical looping reactor to recover after the carbon deposition was also explored. It was found that using a mixture of CH4 and CO2 achieved 92% recovery of the original capacity.
Chemical looping, CO capture, H production, High pressure, Packed bed reactor
de Leeuwe, Christopher
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Abbas, Syed Zaheer
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Argyris, Panagiotis Alexandros
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Zaidi, Adam
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Amieiro, Alvaro
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Poultson, Stephen
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Wails, David
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Spallina, Vincenzo
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1 February 2023
de Leeuwe, Christopher
03e581bf-8436-4287-a9c0-9773c00cd541
Abbas, Syed Zaheer
3b02900e-fef6-40e1-acf7-96f26bfde4a8
Argyris, Panagiotis Alexandros
b208e164-858d-4215-8afb-302b9baf6b0b
Zaidi, Adam
a77274be-dc8d-46db-9185-596e2cccd4d3
Amieiro, Alvaro
82c4c3ed-2237-4191-9bda-c8b0eef5f8d2
Poultson, Stephen
b2da6a26-137d-459c-bc9b-133f6b6ae02c
Wails, David
9efba9c7-d8c5-42d6-a39a-c832fb458ea4
Spallina, Vincenzo
e87fad8c-a44b-48a6-9da6-f60de3ce87a5
de Leeuwe, Christopher, Abbas, Syed Zaheer, Argyris, Panagiotis Alexandros, Zaidi, Adam, Amieiro, Alvaro, Poultson, Stephen, Wails, David and Spallina, Vincenzo
(2023)
Thermochemical syngas generation via solid looping process: An experimental demonstration using Fe-based material.
Chemical Engineering Journal, 453 (Part 2), [139791].
(doi:10.1016/j.cej.2022.139791).
Abstract
Chemical looping is investigated for the production of syngas via reforming or reverse water gas shift in a packed bed reactor using 500 g of Fe on Al2O3 was demonstrated. Oxidation, reduction of the OC and subsequent catalytic reactions of reforming or reverse water gas shift were examined in a temperature range of 600–900 °C and a pressure range of 1–3 bara at high flowrate. Different inlet gas compositions were explored for the considered gas–solid and catalytic reaction stages. Oxidation with air successfully heated the reactor. CH4 resulted ineffective at reducing the Fe-based oxygen carrier while H2 and CO-rich stream were able to achieve full reduction to FeO of the material. In terms of catalytic activity, the maximum conversion of CH4 achieved during the reforming was limited to 62.8 % at 900 °C and 1 bara.
Thermally integrated chemical looping reverse water gas shift was studied as option for CCU in combination with green H2 to produce renewable fuels. A H2/CO value of 2 could be achieved by feeding H2/CO2 of 2. The pressure did not substantially affect the conversion and the bed did not present carbon deposition.
The ability of a Fe-based packed bed chemical looping reactor to recover after the carbon deposition was also explored. It was found that using a mixture of CH4 and CO2 achieved 92% recovery of the original capacity.
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Published date: 1 February 2023
Additional Information:
Funding Information:
The authors acknowledge the EPSRC project (BREINSTORM – EP/S030654/1) and the Department of BEIS in the framework of the Low Carbon Hydrogen Supply 2: Stream 1 Phase 1 Competition (TRN 5044/04/2021) (RECYCLE, HYS2137) for providing funding and support to the development of this study. We are grateful for the analysis support provided by the Johnson Matthey technology centre analytical team for the XRD, XPS, and TEM data collection. The authors would like to take this opportunity to recognize the important contribution to this paper, and many other areas of hydrogen and reforming technologies, of their late and much missed friend and colleague David Wails.
Publisher Copyright:
© 2022
Keywords:
Chemical looping, CO capture, H production, High pressure, Packed bed reactor
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Local EPrints ID: 474454
URI: http://eprints.soton.ac.uk/id/eprint/474454
ISSN: 1385-8947
PURE UUID: f69f9757-ada1-4e85-bf8b-787e94230c2d
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Date deposited: 22 Feb 2023 18:09
Last modified: 17 Mar 2024 04:18
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Author:
Christopher de Leeuwe
Author:
Syed Zaheer Abbas
Author:
Panagiotis Alexandros Argyris
Author:
Adam Zaidi
Author:
Alvaro Amieiro
Author:
Stephen Poultson
Author:
David Wails
Author:
Vincenzo Spallina
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