Journal article Open Access

CO2 gasification in a dual fluidized bed reactor system: Impact on the product gas composition

Anna Magdalena Mauerhofer; Josef Fuchs; Stefan Müller; Florian Benedikt; Johannes Christian Schmid; Hermann Hofbauer


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    "doi": "10.1016/j.fuel.2019.04.168", 
    "description": "<p>The use of CO<sub>2</sub> as gasification agent in the 100 kW<sub>th</sub> dual fluidized bed gasification pilot plant was investigated at TU Wien. For this purpose, steam as gasification agent was replaced stepwise by CO<sub>2</sub>. Softwood was used as fuel and olivine as bed material. Starting from 100 vol.-% steam as gasification agent, substituting it by 32, 45 and finally 68 vol.-% CO<sub>2</sub>. All loop seals were fluidized further with steam, which resulted in these volume percentages. Additionally, a CO<sub>2</sub> gasification test campaign converting softwood with a mixture (90/10 wt.-%) of olivine and limestone was investigated. For this case, the gasification agent was composed of 65 vol.-% CO<sub>2</sub> and 35 vol.-% steam. The use of CO<sub>2</sub> as gasification agent led to changes of the product gas. Instead of a H<sub>2</sub>-enriched product gas, which was produced during steam gasification, CO and CO<sub>2</sub> occupied the major share of the product gas. Consequently, the H<sub>2</sub>/CO ratios as well as the lower heating values decreased when substituting steam by CO<sub>2</sub>. Tar contents were lower for CO<sub>2</sub>/steam gasification compared to pure steam gasification.</p>", 
    "language": "eng", 
    "title": "CO2 gasification in a dual fluidized bed reactor system: Impact on the product gas composition", 
    "license": {
      "id": "CC-BY-4.0"
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    "journal": {
      "volume": "253", 
      "pages": "1605-1616", 
      "title": "Fuel"
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    "keywords": [
      "CO2 gasification", 
      "biomass", 
      "100 kWth pilot plant", 
      "olivine", 
      "H2/CO ratio"
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    "publication_date": "2019-05-15", 
    "creators": [
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        "orcid": "0000-0002-7709-8865", 
        "affiliation": "TU Wien", 
        "name": "Anna Magdalena Mauerhofer"
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        "affiliation": "TU Wien", 
        "name": "Josef Fuchs"
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        "affiliation": "TU Wien", 
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        "affiliation": "TU Wien", 
        "name": "Florian Benedikt"
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        "affiliation": "TU Wien", 
        "name": "Johannes Christian Schmid"
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        "affiliation": "TU Wien", 
        "name": "Hermann Hofbauer"
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