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Pure oxygen fixed-bed gasification of wood under high temperature (>1000 °C) freeboard conditions
RISE - Research Institutes of Sweden, Bioeconomy, ETC Energy Technology Center.
RISE - Research Institutes of Sweden, Bioeconomy, ETC Energy Technology Center.
RISE - Research Institutes of Sweden, Bioeconomy, ETC Energy Technology Center.
RISE - Research Institutes of Sweden, Bioeconomy, ETC Energy Technology Center.
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2017 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 191, 153-162 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, the performance (syngas composition, syngas production and gasification efficiency) of an 18 kW atmospheric fixed bed oxygen blown gasifier (FOXBG) with a high temperature (>1000 °C) freeboard section was compared to that of a pressurized (2–7 bar) oxygen blown entrained flow biomass gasifier (PEBG). Stem wood in the form of pellets (FOXBG) or powder (PEBG) was used as fuel. The experimentally obtained syngas compositions, syngas production rates and gasification efficiencies for both gasification technologies were similar. Efficient generation of high quality syngas (in terms of high concentration and yield of CO and H2 and low concentration and yield of CH4, heavier hydrocarbons and soot) is therefore not specific to the PEBG. Instead, efficient gasification seems to be linked to high reactor process temperatures that can also be obtained in a FOXBG. The high quality of the syngas produced in the FOXBG from fuel pellets is promising, as it suggests that in the future, much of the cost associated with milling the fuel to a fine powder will be avoidable. Furthermore, it is also implied that feedstocks that are nearly impossible to pulverize can be used as un-pretreated fuels in the FOXBG.

Place, publisher, year, edition, pages
2017. Vol. 191, 153-162 p.
Keyword [en]
Biomass, Entrained flow, Fixed bed, Gasification, Oxygen blown
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:ri:diva-29180DOI: 10.1016/j.apenergy.2017.01.054ScopusID: 2-s2.0-85012306104OAI: oai:DiVA.org:ri-29180DiVA: diva2:1086507
Available from: 2017-04-03 Created: 2017-04-03 Last updated: 2017-04-03Bibliographically approved

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CiteExportLink to record
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Citation style
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