Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Power-to-fuels through carbon dioxide Re-Utilization and high-temperature electrolysis: A technical and economical comparison between synthetic methanol and methane
Politecn Torino, Dept Energy DENERG, Corso Duca Abruzzi 24, I-10129 Turin, Italy..
Politecn Torino, Dept Energy DENERG, Corso Duca Abruzzi 24, I-10129 Turin, Italy.;Politecn Torino, Dept Appl Sci & Technol DISAT, Corso Duca Abruzzi 24, I-10129 Turin, Italy..
Politecn Torino, Dept Energy DENERG, Corso Duca Abruzzi 24, I-10129 Turin, Italy..
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology. Politecn Torino, Dept Energy DENERG, Corso Duca Abruzzi 24, I-10129 Turin, Italy.
2019 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 226, p. 679-691Article in journal (Refereed) Published
Abstract [en]

This work conveys the study of the production of synthetic fuels, in this case, methane and methanol, by means of comparing two processes that employ high-temperature water splitting based on solid oxide electrolysis cells (SOEC) technology. In both cases, the process consists of mixing hydrogen produced by electrolysis with carbon dioxide in order to achieve hydrogenation synthesis via a catalytic reactor. An energy analysis was performed with special care on thermal integration (minimization of external heat requirements) via pinch analysis, as well as a final estimation of power-to-fuel overall efficiency. The study demonstrates that power-to-methane and power-to-methanol process can achieve efficiency of up to approximate to 77% and approximate to 59%, respectively. The energy analysis (based on the process modelling developed for both the systems) and the heat exchange network design enabled the development of capital expenditure estimation. An economic analysis comparison for the production cost of both synthetic fuels was performed with the purpose of highlighting any potential risk associated with the systems. The economic analysis considered the impact on synthetic fuel cost of some parameters as electrolysis specific costs, the expenditure for carbon dioxide, electricity price, and yearly operating hours. The results show that for both systems, as expected, the SOEC electrolyzer is the greatest capital expenditure of the design. Methanol synthesis plant showed lower efficiency and higher investment costs; on the other hand, fossil-based methanol has higher costs ($/MWh) than fossil methane; thus, the breakeven point of electricity price (i.e., that making economically comparable synthetic and fossil fuel) is similar for the two considered cases. It was concluded that to produce an economically attractive market for methane and methanol, the production plants should maintain a utilization factor of approximately 50%, the cost of SOECs should be near to 1050 (sic)/kW and the electricity required to run the system needs to be supplied from renewable sources at a very low cost (below 40-50 $/MWh).

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 226, p. 679-691
Keywords [en]
Power-to-fuels, CO2 hydrogenation, Solid oxide cells, Thermal integration, Techno-economic analysis
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:kth:diva-254070DOI: 10.1016/j.jclepro.2019.04.087ISI: 000469901200059Scopus ID: 2-s2.0-85064520919OAI: oai:DiVA.org:kth-254070DiVA, id: diva2:1330798
Note

QC 20190626

Available from: 2019-06-26 Created: 2019-06-26 Last updated: 2019-06-26Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Santarelli, Massimo

Search in DiVA

By author/editor
Santarelli, Massimo
By organisation
Heat and Power Technology
In the same journal
Journal of Cleaner Production
Energy Systems

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 9 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf