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Optical techniques for characterizing the biomass particle flow fluctuations in lab- and pilot-scale thermochemical systems
RISE - Research Institutes of Sweden, Bioeconomy, ETC Energy Technology Center.
RISE - Research Institutes of Sweden, Bioeconomy, ETC Energy Technology Center.
RISE - Research Institutes of Sweden, Bioeconomy, ETC Energy Technology Center.
2017 (English)In: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 313, 129-134 p.Article 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, 129-134 p.
Keyword [en]
Entrained flow gasifier, Extinction, Particle feeder, Particle flows, Tunable diode laser, Feeding, Gasification, Light absorption, Light extinction, Mass transfer, Semiconductor lasers, Thermomechanical treatment, Balance measurement, Entrained flow gasifiers, Extinction techniques, On-line measurement, Particle flow, Real-time diagnostics, Thermochemical systems, Tunable diode lasers, Biomass
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:ri:diva-29176DOI: 10.1016/j.powtec.2017.03.001Scopus ID: 2-s2.0-85014959681OAI: oai:DiVA.org:ri-29176DiVA: diva2:1086639
Available from: 2017-04-03 Created: 2017-04-03 Last updated: 2017-04-03Bibliographically approved

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