Electrified combined reforming of methane process for more effective CO2 conversion to methanol: Process development and environmental impact assessment

•A new system for methanol production based on the novel electrified combined-reforming process has been introduced.•Electrified combined-reforming process can reduce hydrogen demand by 88.4 % compared to the conventional tri-reforming one.•A comprehensive comparison between the lifecycle emissions...

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Veröffentlicht in:Energy conversion and management 2023-07, Vol.287, p.117096, Article 117096
Hauptverfasser: Barati, Khadijeh, Khojasteh-Salkuyeh, Yaser, Ashrafi, Omid, Navarri, Philippe
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container_start_page 117096
container_title Energy conversion and management
container_volume 287
creator Barati, Khadijeh
Khojasteh-Salkuyeh, Yaser
Ashrafi, Omid
Navarri, Philippe
description •A new system for methanol production based on the novel electrified combined-reforming process has been introduced.•Electrified combined-reforming process can reduce hydrogen demand by 88.4 % compared to the conventional tri-reforming one.•A comprehensive comparison between the lifecycle emissions of the E-CRM and other methanol production pathways is conducted across Canada.•The proposed E-CRM-90 system is more environmentally friendly in terms of GHG emissions in the average of Canada than other processes. In this work, we developed an effective approach for the conversion of CO2 by incorporating the electrified combined reforming reactor (E-CRM). The process simulation and life cycle assessment (LCA) of the proposed process are conducted considering a variety of recycling ratios of the unreacted syngas to the main reformer using Aspen Plus software. The simulation results show that the electrification of the proposed reforming process can significantly improve the overall efficiency of the process compared to a reference process. The key factors such as hydrogen demand (88.4 % reduction), net electricity consumption (17 % reduction), thermal efficiency (16.7 % increase), and methanol production (7.5 % increase) are improved. Furthermore, the LCA of the proposed process is conducted using openLCA software and results are compared with those of the CO2 hydrogenation and conventional methanol production processes for various geographical locations in Canada. The LCA results showed that the E-CRM with 90 recycling of unreacted gases (E-CRM-90) is an environmentally attractive option with the lowest greenhouse gas emissions when the carbon intensity of the electricity is equal to or lower than that of the average value in Canada.
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ispartof Energy conversion and management, 2023-07, Vol.287, p.117096, Article 117096
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source Elsevier ScienceDirect Journals Complete
subjects administrative management
Canada
carbon
Carbon capture and utilization
carbon dioxide
computer software
electric energy consumption
electricity
Electrification
energy conversion
environmental assessment
greenhouse gases
hydrogen
hydrogenation
Life cycle analysis
life cycle assessment
methane
methanol
Methanol production
synthesis gas
Tri-reforming
title Electrified combined reforming of methane process for more effective CO2 conversion to methanol: Process development and environmental impact assessment
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