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", 
  "container_title": "Fuel", 
  "language": "eng", 
  "title": "CO2 gasification in a dual fluidized bed reactor system: Impact on the product gas composition", 
  "issued": {
    "date-parts": [
      [
        2019, 
        5, 
        15
      ]
    ]
  }, 
  "abstract": "<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>", 
  "author": [
    {
      "family": "Anna Magdalena Mauerhofer"
    }, 
    {
      "family": "Josef Fuchs"
    }, 
    {
      "family": "Stefan M\u00fcller"
    }, 
    {
      "family": "Florian Benedikt"
    }, 
    {
      "family": "Johannes Christian Schmid"
    }, 
    {
      "family": "Hermann Hofbauer"
    }
  ], 
  "page": "1605-1616", 
  "volume": "253", 
  "type": "article-journal", 
  "id": "3233549"
}
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