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Cold flow experiments in an entrained flow gasification reactor with a swirl-stabilized pulverized biofuel burner
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center. Luleå University of Technology, Sweden.
Luleå University of Technology, Sweden; Mosul University, Iraq.
Luleå University of Technology, Sweden.
Luleå University of Technology, Sweden.
2016 (English)In: International Journal of Multiphase Flow, ISSN 0301-9322, E-ISSN 1879-3533, Vol. 85, p. 267-277Article in journal (Refereed) Published
Abstract [en]

Short particle residence time in entrained flow gasifiers demands the use of pulverized fuel particles to promote mass and heat transfer, resulting high fuel conversion rate. The pulverized biomass particles have a wide range of aspect ratios which can exhibit different dispersion behavior than that of spherical particles in hot product gas flows. This results in spatial and temporal variations in temperature distribution, the composition and the concentration of syngas and soot yield. One way to control the particle dispersion is to impart a swirling motion to the carrier gas phase. This paper investigates the dispersion behavior of biomass fuel particles in swirling flows. A two-phase particle image velocimetry technique was applied to simultaneously measure particle and gas phase velocities in turbulent isothermal flows. Post-processed PIV images showed that a poly-dispersed behavior of biomass particles with a range of particle size of 112–160 µm imposed a significant impact on the air flow pattern, causing air flow decelerated in a region of high particle concentration. Moreover, the velocity field, obtained from individually tracked biomass particles showed that the swirling motion of the carrier air flow gives arise a rapid spreading of the particles.

Place, publisher, year, edition, pages
2016. Vol. 85, p. 267-277
Keywords [en]
Biomass, Particle image velocimetry, Particle-laden turbulent flow and entrained flow reactor, Swirl-stabilized burner, Aspect ratio, Dispersions, Flow patterns, Flow visualization, Fuel gages, Fuels, Gases, Heat transfer, Particle size, Pulverized fuel, Residence time distribution, Velocimeters, Velocity, Velocity measurement, Entrained flow gasification, Entrained flow gasifiers, Entrained Flow Reactor, Particle concentrations, Particle image velocimetries, Spatial and temporal variation, Swirl-stabilized burners, Turbulent isothermal flow, Air
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27606DOI: 10.1016/j.ijmultiphaseflow.2016.06.016Scopus ID: 2-s2.0-84978033454OAI: oai:DiVA.org:ri-27606DiVA, id: diva2:1059685
Available from: 2016-12-22 Created: 2016-12-21 Last updated: 2019-06-12Bibliographically approved

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