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Integration of an electrolysis unit for producer gas conditioning in a bio-SNG plant
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Applied Electrochemistry.ORCID iD: 0000-0001-9203-9313
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2017 (English)In: 30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2017, 2017Conference paper, Published paper (Refereed)
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 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 tailored syngas produced. Investment opportunity is evaluated as an economic indicator of the processes considered. Results indicate that the production of SNG can be boosted by approximately 50% without the need of an additional carbon source, i.e. for the same biomass input as in standalone operation of the GoBiGas plant.

Place, publisher, year, edition, pages
2017.
National Category
Chemical Process Engineering
Identifiers
URN: urn:nbn:se:kth:diva-233923Scopus ID: 2-s2.0-85048615505OAI: oai:DiVA.org:kth-233923DiVA, id: diva2:1248935
Conference
30th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2017
Note

cited By 0. QC 20181003

Available from: 2018-09-17 Created: 2018-09-17 Last updated: 2018-10-03Bibliographically approved

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Lindbergh, GöranLagergren, CarinaEngvall, Klas

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