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Integrated biomass gasification using the waste heat from hot slags: Control of syngas and polluting gas releases
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
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2016 (English)In: Energy, ISSN 0360-5442, E-ISSN 1873-6785, Vol. 114, 165-176 p.Article in journal (Refereed) Published
Abstract [en]

In this study, the thermodynamics of a novel strategy, i.e., biomass/CO2 gasification integrated with heat recovery from hot slags in the steel industry, were systemically investigated. Both the target syngas yield and the polluting gas release were considered where the effect of gasifying conditions including temperature, pressure and CO2 reacted was analyzed and then the roles of hot slags were further clarified. The results indicated that there existed an optimum temperature for the maximization of H2 production. Compared to blast furnace slags, steel slags remarkably increased the CO yield at 600–1400 °C due to the existence of iron oxides and decreased the S-containing gas releases at 400–700 °C, indicating potential desulfurizing ability. The identification of biomass/CO2 gasification thermodynamics in presence of slags could thus provide important clues not only for the deep understanding of biomass gasification but also for the industrial application of this emerging strategy from the viewpoint of syngas optimization and pollution control.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 114, 165-176 p.
Keyword [en]
Biomass/CO2 gasification, Polluting gas release, Slag heat recovery, Syngas yield, Thermodynamics, Biomass, Blast furnaces, Carbon dioxide, Pollution control, Slags, Steelmaking, Synthesis gas, Waste heat, Biomass Gasification, Gas release, Novel strategies, Optimum temperature, Steel slag, Syn-gas, Gasification
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-195215DOI: 10.1016/j.energy.2016.07.161ISI: 000387194800014ScopusID: 2-s2.0-84981210880OAI: oai:DiVA.org:kth-195215DiVA: diva2:1047457
Note

QC 20161117

Available from: 2016-11-17 Created: 2016-11-02 Last updated: 2017-01-10Bibliographically approved

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Seetharaman, Seshadri
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