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Optical techniques for characterizing the biomass particle flow fluctuations in lab- and pilot-scale thermochemical systems
RISE ETC AB.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-6473-7090
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-9395-9928
2017 (English)In: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 313, p. 129-134Article in journal (Refereed) Published
Abstract [en]

The work demonstrates the performance of the optical extinction technique for real-time diagnostics of the fluctuations in biomass particle flows. The online measurements of fluctuations of density were used to determine the biomass particle mass flow fluctuations. Biomass flows were produced using laboratory biomass particle feeder (mass flux up to 10 g/min) and the hopper-screw feeding system of the pilot-scale entrained flow rector, mass flux up to 500 g/min, located at SP ETC in Piteå. The experiments showed that the time-averaged extinction appeared to be linearly related to the real particle mass flow. The relatively fast variations in biomass feeding rates measured using the extinction technique were confirmed by fast balance measurements (in laboratory feeder experiments) and by real-time tunable diode laser CO and H2O concentrations measured in the reactor core of the entrained flow gasifier.

Place, publisher, year, edition, pages
2017. Vol. 313, p. 129-134
Keywords [en]
Extinction, Tunable diode laser, Particle flows, Particle feeder, Entrained flow gasifier
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-73384DOI: 10.1016/j.powtec.2017.03.001ISI: 000399508100015Scopus ID: 2-s2.0-85014959681OAI: oai:DiVA.org:ltu-73384DiVA, id: diva2:1301542
Available from: 2019-04-02 Created: 2019-04-02 Last updated: 2019-04-09Bibliographically approved
In thesis
1. Improving the efficiency of entrained flow gasifiers by real time in-situ diagnostics and burner design
Open this publication in new window or tab >>Improving the efficiency of entrained flow gasifiers by real time in-situ diagnostics and burner design
2019 (English)Doctoral thesis, comprehensive summary (Other academic)
Alternative title[sv]
Optimering av suspensionsförgasare med hjälp av laserdiagnostik och brännardesign
Place, publisher, year, edition, pages
Luleå: Luleå University of Technology, 2019. p. 110
Series
Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
urn:nbn:se:ltu:diva-73406 (URN)978-91-7790-348-2 (ISBN)978-91-7790-349-9 (ISBN)
Public defence
2019-06-14, E231, Luleå, 10:00 (English)
Opponent
Supervisors
Available from: 2019-04-04 Created: 2019-04-03 Last updated: 2019-05-17Bibliographically approved

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Ögren, YngveWiinikka, Henrik

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