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Integration of an electrolysis unit for producer gas conditioning in a bio-synthetic natural gas plant
International Institute for Applied Systems Analysis (IIASA), Laxenburg.ORCID iD: 0000-0002-4909-6643
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-2314-8097
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-4532-4530
School of Chemical Science and Engineering, KTH Royal Institute of Technology.
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2019 (English)In: Journal of energy resources technology, ISSN 0195-0738, E-ISSN 1528-8994, Vol. 141, no 1, article id 012002Article in journal (Refereed) Published
Abstract [en]

Producer gas from biomass gasification contains impurities like tars, particles, alkali salts, and sulfur/nitrogen compounds. As a result, a number of process steps are required to condition the producer gas before utilization as a syngas and further upgrading to final chemicals and fuels. Here, we study the concept of using molten carbonate electrolysis cells (MCEC) both to clean and to condition the composition of a raw syngas stream, from biomass gasification, for further upgrading into synthetic natural gas (SNG). A mathematical MCEC model is used to analyze the impact of operational parameters, such as current density, pressure and temperature, on the quality and amount of syngas produced. Internal rate of return (IRR) is evaluated as an economic indicator of the processes considered. Results indicate that, depending on process configuration, the production of SNG can be boosted by approximately 50-60% without the need of an additional carbon source, i.e., for the same biomass input as in standalone operation of the GoBi-Gas plant. Copyright

Place, publisher, year, edition, pages
The American Society of Mechanical Engineers (ASME) , 2019. Vol. 141, no 1, article id 012002
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-70732DOI: 10.1115/1.4040942ISI: 000452421900004Scopus ID: 2-s2.0-85052065806OAI: oai:DiVA.org:ltu-70732DiVA, id: diva2:1244841
Note

Validerad;2018;Nivå 2;2018-09-03 (andbra)

Available from: 2018-09-03 Created: 2018-09-03 Last updated: 2019-02-13Bibliographically approved

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Mesfun, SennaiLundgren, JoakimToffolo, Andrea

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