Chemical looping reforming for syngas generation at real process conditions in packed bed reactors: An experimental demonstration
Chemical looping reforming for syngas generation at real process conditions in packed bed reactors: An experimental demonstration
Chemical looping reforming (CLR) is a promising technology for syngas production combining autothermal operation with integrated CO2 capture. At large scale, reformer outlet pressure during syngas production is an important factor for the overall plant’s process efficiency and defines the energy requirements for downstream processing. Packed bed reactors are widely used and established in industry for high pressure operating conditions due to their robust and, compared to other reactor types, simpler engineering. In this paper, CLR in packed bed reactors (CLR-PB) is demonstrated under a pressure range of 1 – 5 bar in a lab scale reactor, using NiO/CaAl2O4 as the oxygen carrier (OC). Oxidation, reduction and dry reforming processes were examined in a wide range of temperature (400 – 900 °C), pressure (1 – 5 bar), flowrate (10 – 40 NLPM) and different inlet gas compositions, providing an important foreground for the optimal operating conditions for each process.
Furthermore, a full CLR-PB pseudo-continuous cycle has been successfully demonstrated for the first time in a lab reactor setup. During the full cycle operation, CH4 conversion > 99% has been achieved, while the temperature and concentration profiles provided identical results for consecutive cycles verifying the continuity and the feasibility of the process. These results constitute the basis for the scale-up of the process, where heat losses would be minimized and the energy efficiency of the process would be significantly higher.
Argyris, Panagiotis Alexandros
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de Leeuwe, Christopher
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Abbas, Syed Zaheer
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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 May 2022
Argyris, Panagiotis Alexandros
b208e164-858d-4215-8afb-302b9baf6b0b
de Leeuwe, Christopher
03e581bf-8436-4287-a9c0-9773c00cd541
Abbas, Syed Zaheer
3b02900e-fef6-40e1-acf7-96f26bfde4a8
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
Argyris, Panagiotis Alexandros, de Leeuwe, Christopher, Abbas, Syed Zaheer, Amieiro, Alvaro, Poultson, Stephen, Wails, David and Spallina, Vincenzo
(2022)
Chemical looping reforming for syngas generation at real process conditions in packed bed reactors: An experimental demonstration.
Chemical Engineering Journal, 435 (Part 2), [134883].
(doi:10.1016/j.cej.2022.134883).
Abstract
Chemical looping reforming (CLR) is a promising technology for syngas production combining autothermal operation with integrated CO2 capture. At large scale, reformer outlet pressure during syngas production is an important factor for the overall plant’s process efficiency and defines the energy requirements for downstream processing. Packed bed reactors are widely used and established in industry for high pressure operating conditions due to their robust and, compared to other reactor types, simpler engineering. In this paper, CLR in packed bed reactors (CLR-PB) is demonstrated under a pressure range of 1 – 5 bar in a lab scale reactor, using NiO/CaAl2O4 as the oxygen carrier (OC). Oxidation, reduction and dry reforming processes were examined in a wide range of temperature (400 – 900 °C), pressure (1 – 5 bar), flowrate (10 – 40 NLPM) and different inlet gas compositions, providing an important foreground for the optimal operating conditions for each process.
Furthermore, a full CLR-PB pseudo-continuous cycle has been successfully demonstrated for the first time in a lab reactor setup. During the full cycle operation, CH4 conversion > 99% has been achieved, while the temperature and concentration profiles provided identical results for consecutive cycles verifying the continuity and the feasibility of the process. These results constitute the basis for the scale-up of the process, where heat losses would be minimized and the energy efficiency of the process would be significantly higher.
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Accepted/In Press date: 21 January 2022
e-pub ahead of print date: 29 January 2022
Published date: 1 May 2022
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Local EPrints ID: 474507
URI: http://eprints.soton.ac.uk/id/eprint/474507
ISSN: 1385-8947
PURE UUID: c11866bf-d1a9-4c7b-9943-f8e5ceae394c
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Date deposited: 23 Feb 2023 17:40
Last modified: 17 Mar 2024 04:18
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Author:
Panagiotis Alexandros Argyris
Author:
Christopher de Leeuwe
Author:
Syed Zaheer Abbas
Author:
Alvaro Amieiro
Author:
Stephen Poultson
Author:
David Wails
Author:
Vincenzo Spallina
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