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Erschienen in: Biomass Conversion and Biorefinery 1/2011

01.03.2011 | Original Article

Steam gasification of various feedstocks at a dual fluidised bed gasifier: Impacts of operation conditions and bed materials

verfasst von: Christoph Pfeifer, Stefan Koppatz, Hermann Hofbauer

Erschienen in: Biomass Conversion and Biorefinery | Ausgabe 1/2011

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Abstract

Gasification of biomass is an attractive technology for combined heat and power production as well as for synthesis processes such as production of liquid and gaseous biofuels. Dual fluidised bed (DFB) technology offers the advantage of a nearly nitrogen-free product gas mainly consisting of H2, CO, CO2 and CH4. The DFB steam gasification process has been developed at Vienna University of Technology over the last 15 years using cold flow models, laboratory units, mathematical modelling and simulation. The main findings of the experimental work at a 100-kW pilot scale unit are presented. Different fuels (wood pellets, wood chips, lignite, coal, etc.) and different bed materials (natural minerals such as olivine, limestones, calcites, etc. as well as modified olivines) have been tested and the influence on tar content as well as gas composition was measured and compared among the different components. Moreover, the influence of operating parameters such as fuel moisture content, steam/fuel ratio and gasification temperature on the product gas has been investigated. DFB steam gasification of solid biomass coupled with CO2 capture, the so-called absorption enhanced reforming (AER) process, is highlighted. The experiments in pilot scale led to commercial realisation of this technology in demonstration scale. Summarising, the DFB system offers excellent fuel flexibility to be used in advanced power cycles as well as in polygeneration applications.

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Metadaten
Titel
Steam gasification of various feedstocks at a dual fluidised bed gasifier: Impacts of operation conditions and bed materials
verfasst von
Christoph Pfeifer
Stefan Koppatz
Hermann Hofbauer
Publikationsdatum
01.03.2011
Verlag
Springer-Verlag
Erschienen in
Biomass Conversion and Biorefinery / Ausgabe 1/2011
Print ISSN: 2190-6815
Elektronische ISSN: 2190-6823
DOI
https://doi.org/10.1007/s13399-011-0007-1

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