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Pilot scale autothermal gasification of coconut shell with CO2-O2 mixture
Department of Environmental Science and Technology, Tokyo Institute of Technology, Yokohama.
Department of Chemical Engineering, Institut Teknologi Bandung.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0001-6081-5736
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Institute of Energy and Power Engineering, Zhejiang University of Technology.
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2015 (English)In: Frontiers in Energy, ISSN 2095-1701, E-ISSN 2095-1698, Vol. 9, no 3, p. 362-370Article in journal (Refereed) Published
Abstract [en]

This paper explored the feasibility and benefit of CO2 utilization as gasifying agent in the autothermal gasification process. The effects of CO2 injection on reaction temperature and producer gas composition were examined in a pilot scale downdraft gasifier by varying the CO2/C ratio from 0.6 to 1.6. O2 was injected at an equivalence ratio of approximately 0.33–0.38 for supplying heat through partial combustion. The results were also compared with those of air gasification. In general, the increase in CO2 injection resulted in the shift of combustion zone to the downstream of the gasifier. However, compared with that of air gasification, the long and distributed high temperature zones were obtained in CO2-O2 gasification with a CO2/C ratio of 0.6–1.2. The progress of the expected CO2 to CO conversion can be implied from the relatively insignificant decrease in CO fraction as the CO2/C ratio increased. The producer gas heating value of CO2-O2 gasification was consistently higher than that of air gasification. These results show the potential of CO2-O2 gasification for producing high quality producer gas in an efficient manner, and the necessity for more work to deeply imply the observation

Place, publisher, year, edition, pages
2015. Vol. 9, no 3, p. 362-370
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-4206DOI: 10.1007/s11708-015-0375-5ISI: 000209907600010Scopus ID: 2-s2.0-84942369352Local ID: 21ea8249-6116-4512-bb33-6982bd417734OAI: oai:DiVA.org:ltu-4206DiVA, id: diva2:977070
Note
Validerad; 2015; Nivå 1; 20150907 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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