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Energy and exergy analysis of syngas production via biomass gasification
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
2016 (English)In: European Biomass Conference and Exhibition Proceedings, ETA-Florence Renewable Energies , 2016, no 24thEUBCE, p. 922-928Conference paper (Refereed)
Abstract [en]

An entrained gasification system for syngas production is modeled and analyzed. The system is capable of producing enough syngas for further production of 15 m3/h Fischer-Tropsch diesel which is suitable for independent medium scale renewable energy systems. The system is modeled using ASPEN Plus and analyzed considering energy and exergy aspects. The model includes all the required units to achieve desired properties of syngas such as air separation unit to provide pure oxygen as oxidant feed, water-gas shift reactor to achieve desired hydrogen to carbon monoxide ratio, and selexol unit for selective and bulk removal of H2S and CO2. Results showed that including all of these units in the analysis will result in system energy and exergy efficiencies as low as 53.4% and 48.9%, respectively. Also, it is shown that although methane content increases at elevated operating pressures, due to high gasification temperature it is still negligible compare to other elements of syngas. It is also shown that system will have its higher valuse of efficiency when operated at 6 bar. On the other hand temperature has not any major effect on total system performance due to several contradictory effects that eventually counterbalance each other. 

Place, publisher, year, edition, pages
ETA-Florence Renewable Energies , 2016. no 24thEUBCE, p. 922-928
Keywords [en]
Efficiency, Energy balance, Entrained Gasification, Exergy balance, Syngas
National Category
Environmental Engineering
Identifiers
URN: urn:nbn:se:kth:diva-216859Scopus ID: 2-s2.0-85019742936OAI: oai:DiVA.org:kth-216859DiVA, id: diva2:1160843
Conference
European Biomass Conference and Exhibition Proceedings
Note

Export Date: 24 October 2017; Conference Paper; Funding details: KTH, Kungliga Tekniska Högskolan; Funding text: This research has been done in collaboration with Politecnico di Torino and Royal Institute of Technology, funded through Erasmus Mundus Joint Doctoral Programme SELECT+, the support of which is gratefully acknowledged. QC 20171128

Available from: 2017-11-28 Created: 2017-11-28 Last updated: 2017-11-28Bibliographically approved

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