Change search
ReferencesLink to record
Permanent link

Direct link
Soot reduction in an entrained flow gasifier of biomass by active dispersion of fuel particles
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.
Show others and affiliations
Number of Authors: 5
2016 (English)In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153Article in journal (Refereed) Epub ahead of print
Abstract [en]

Soot is an undesired by-product of entrained flow biomass gasification since it has a detrimental effect on operation of the gasifier, e.g. clogging of flow passages and system components and reduction of efficiency. This study investigated how active flow manipulation by adding synthetic jet (i.e. oscillating flow through orifice) in feeding line affects dispersion of fuel particles and soot formation. Pine sawdust was gasified at the conditions similar to pulverized burner flame, where a flat flame of methane-air sub-stoichiometric mixture supported ignition of fuel particles. A synthetic jet flow was supplied by an actuator assembly and was directed perpendicular to a vertical tube leading to the center of the flat flame burner through which pine sawdust with a size range of 63–112 μm were fed into a reactor. Quartz filter sampling and the laser extinction methods were employed to measure total soot yield and soot volume fraction, respectively. The synthetic jet actuator modulated the dispersion of the pine sawdust and broke up particle aggregates in both hot and cold gas flows through generation of large scale vortex structures in the flow. The soot yield significantly reduced from 1.52 wt.% to 0.3 wt.% when synthetic jet actuator was applied. The results indicated that the current method suppressed inception of young soot particles. The method has high potential because soot can be reduced without changing major operation parameters.

Place, publisher, year, edition, pages
2016.
National Category
Energy Engineering Fluid Mechanics and Acoustics
Research subject
Energy Engineering; Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-59714DOI: 10.1016/j.fuel.2016.09.039ScopusID: 2-s2.0-84994765423OAI: oai:DiVA.org:ltu-59714DiVA: diva2:1034746
Available from: 2016-10-13 Created: 2016-10-13 Last updated: 2016-12-02

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Göktepe, BurakUmeki, KentaroHazim, AmmarLundström, StaffanGebart, Rikard
By organisation
Energy ScienceFluid and Experimental Mechanics
In the same journal
Fuel
Energy EngineeringFluid Mechanics and Acoustics

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 19 hits
ReferencesLink to record
Permanent link

Direct link