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Pressurized oxygen blown entrained-flow gasification of wood powder

Weiland, Fredrik (author)
Luleå tekniska universitet,RISE,SP Energy Technology Center,Luleå University of Technology, Sweden,Energivetenskap,Energy Technology Centre in Piteå, Sweden
Hedman, Henry (author)
RISE,SP Energy Technology Center,Energy Technology Centre in Piteå, Sweden
Marklund, Magnus (author)
RISE,SP Energy Technology Center,Energy Technology Centre in Piteå, Sweden
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Wiinikka, Henrik (author)
Luleå tekniska universitet,RISE,SP Energy Technology Center,Energivetenskap,Energy Technology Centre in Piteå, Sweden
Öhrman, Olov (author)
RISE,SP Energy Technology Center,Luleå University of Technology, Sweden,Energy Technology Centre in Piteå, Sweden
Gebart, Rikard (author)
Luleå tekniska universitet,RISE,SP Energy Technology Center,Luleå University of Technology, Sweden,Energivetenskap
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 (creator_code:org_t)
2013-02-12
2013
English.
In: Energy & Fuels. - : American Chemical Society (ACS). - 0887-0624 .- 1520-5029. ; 27:2, s. 932-941
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • In the present study, an oxygen blown pilot scale pressurized entrained-flow biomass gasification plant (PEBG, 1 MWth) was designed, constructed, and operated. This Article provides a detailed description of the pilot plant and results from gasification experiments with stem wood biomass made from pine and spruce. The focus was to evaluate the performance of the gasifier with respect to syngas quality and mass and energy balance. The gasifier was operated at an elevated pressure of 2 bar(a) and at an oxygen equivalence ratio (λ) between 0.43 and 0.50. The resulting process temperatures in the hot part of the gasifier were in the range of 1100-1300 °C during the experiments. As expected, a higher λ results in a higher process temperature. The syngas concentrations (dry and N 2 free) during the experiments were 25-28 mol % for H2, 47-49 mol % for CO, 20-24 mol % for CO2, and 1-2 mol % for CH 4. The dry syngas N2 content was varied between 18 and 25 mol % depending on the operating conditions of the gasifier. The syngas H 2/CO ratio was 0.54-0.57. The gasifier cold gas efficiency (CGE) was approximately 70% for the experimental campaigns performed in this study. The synthesis gas produced by the PEBG has potential for further upgrading to renewable products, for example, chemicals or biofuels, because the performance of the gasifier is close to that of other relevant gasifiers.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Energiteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Energy Engineering (hsv//eng)

Keyword

Carbon dioxide
Experiments
Oxygen
Pilot plants
Synthesis gas
Energiteknik
Energiteknik

Publication and Content Type

ref (subject category)
art (subject category)

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