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Influence of oxidizer injection angle on the entrained flow gasification of torrefied wood powder
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Energivetenskap. RISE-Energy Technology Center AB, Piteå, Sweden.ORCID-id: 0000-0002-6473-7090
RISE-Energy Technology Center AB, Piteå, Sweden.
RISE-Energy Technology Center AB, Piteå, Sweden.
RISE-Energy Technology Center AB, Piteå, Sweden.
Vise andre og tillknytning
2018 (engelsk)Inngår i: Fuel processing technology, ISSN 0378-3820, E-ISSN 1873-7188, Vol. 181, s. 8-17Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In the present work, 5 different axisymmetric burners with different directions of the oxidizer inlets were experimentally tested during oxygen blown gasification of torrefied wood powder. The burners were evaluated under two different O2/fuel ratios at a thermal power of 135 kWth, based on the heating value of torrefied wood powder. The evaluation was based on both conventional methods such as gas chromatography measurements and thermocouples and in-situ measurements using Tunable Diode Laser Absorption Spectroscopy. It was shown that changes in the near burner region influence the process efficiency significantly. Changing the injection angle of the oxidizer stream to form a converging oxidizer jet increased process efficiency by 20%. Besides increased process efficiency, it was shown that improvements in burner design also influence carbon conversion and hydrocarbon production. The burner with the best performance also produced less CH4 and achieved the highest carbon conversion. The effect of generating swirl via rotating the oxidizer jet axes was also investigated. Swirl broadened or removed the impingement area between the fuel and oxidizer jets, however resulting in differences in performance within the measurement uncertainty. 

sted, utgiver, år, opplag, sider
Elsevier, 2018. Vol. 181, s. 8-17
Emneord [en]
Entrained flow gasification, Process optimization, Burner design, TDLAS, Syngas, Biomass
HSV kategori
Forskningsprogram
Energiteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-71020DOI: 10.1016/j.fuproc.2018.09.005ISI: 000449900500002Scopus ID: 2-s2.0-85053436599OAI: oai:DiVA.org:ltu-71020DiVA, id: diva2:1251834
Merknad

Validerad;2018;Nivå 2;2018-09-28 (svasva)

Tilgjengelig fra: 2018-09-28 Laget: 2018-09-28 Sist oppdatert: 2019-04-03bibliografisk kontrollert
Inngår i avhandling
1. Improving the efficiency of entrained flow gasifiers by real time in-situ diagnostics and burner design
Åpne denne publikasjonen i ny fane eller vindu >>Improving the efficiency of entrained flow gasifiers by real time in-situ diagnostics and burner design
2019 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Alternativ tittel[sv]
Optimering av suspensionsförgasare med hjälp av laserdiagnostik och brännardesign
sted, utgiver, år, opplag, sider
Luleå: Luleå University of Technology, 2019. s. 110
Serie
Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544
HSV kategori
Forskningsprogram
Energiteknik
Identifikatorer
urn:nbn:se:ltu:diva-73406 (URN)978-91-7790-348-2 (ISBN)978-91-7790-349-9 (ISBN)
Disputas
2019-06-14, E231, Luleå, 10:00 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2019-04-04 Laget: 2019-04-03 Sist oppdatert: 2019-05-17bibliografisk kontrollert

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