material flow, characterization, sorting, compaction
TRANSCRIPT
Material flow, characterization, sorting, compaction
Unit of Biomass Technology and Chemistry, SLU Pretreatment and Fractionation Platform
Sylvia Larsson
Who are we?
• Torbjörn Lestander, Assoc Prof • NIR spectroscopy and multivariate modelling
• Sylvia Larsson, Asst Prof • Compaction and physical characterization of biomass
• Mikael Thyrel, PhD student • XRF characterization of ash compounds in biomass
• Magnus Rudolfsson, PhD student • Densification and characterization of thermally treated biomass
Facilities
Pilot scale research at the Biofuel Technology Centre
• 10 kg to 10 tons • Chipping/shredding (10-50 mm) • Moisture control (+/- 0.5%) • Milling (1-10 mm) • Fractioning/sieving for specific
particle size distributions • Briquetting and pelletizing
Biomass laboratory – chemical and mechanical/physical characterization Chemical • Moisture content • Ash content • Extractive content
Physical/mechanical • Sieve analysis • Flowability, frictional
properties • NEW! – Dynamic vapor
sorption
Spectroscopy • NIR • XRF
Material/sample preparation • Particle size • Particle size distribution • Single pellet production
Research examples
Biomass pelletizing Larsson, S.H., Samuelsson, R., Thyrel, M., Lestander, T.A., Storage effects on
Scots pine (Pinus sylvestris L.) sawdust and influence of moisture and extractive contents on kinematic wall friction of pine powder. (submitted).
Samuelsson, R., Larsson, S.H., Thyrel, M., Lestander, T.A., Moisture content and storage time influence the binding mechanisms in biofuel pellets. (submitted).
Larsson, S.H., Thyrel, M., Geladi, P. & Lestander, T.A. 2008. High quality biofuel pellet production from pre-compacted low density raw materials. Bioresource Technology 99 (15), 7176-7182.
Larsson, S.H., Rudolfsson, M., Thyrel, M., Örberg, H., Kalén, G., Wallin, M., Lestander, T.A., Temperature controlled feed layer formation in biofuel pellet production. (accepted).
Larsson, S.H., Rudolfsson, M. Temperature control in energy grass pellet production - effects on process stability and pellet quality. (submitted).
Larsson, S.H., Segerström, M. Die temperature control in pilot scale softwood pelletizing - effects on pellet quality and energy consumption. (manuscript).
Larsson, S.H., Rudolfsson, M., (N.N), Samuelsson, R., Effects of moisture content, torrefaction temperature, and die temperature in pilot scale pelletizing of torrefied Norway spruce. (manuscript).
TEMPERATURE CONTROL IN PILOT SCALE PELLETIZING
Introduction of a new process parameter to overcome process instability
Biofuel Technology
Centre, Sweden
Biomass particle design
Wolfson Centre for Bulk Solids Handling
Technology, United Kingdom
Biomass handling and design of
equipment University of Salerno, Italy
Storage & flow characterization
Universidad Politécnica de Madrid, Spain
Risks of fires and explosions
Bio4Flow Star Cluster Awardees Awarded Star Cluster
BIO4FLOW PILOT STUDY
• Saw mill chips (wide size distribution) • Wood powder (hammer milled 4 mm) • Reed canary grass (shredded 30 mm) • Particle characterization (size and shape) • Storage & flow characterization • Pilot scale tests in silos, feeders and conveyor systems • Fire and explosion risk determination
Mechanical and optical fractioning
• Preparation of well-defined wood tissues • Chipping in commercial chipper • Approximately 300 L of each
IDENTIFYING AND SEPARATING WOOD CHIPS WITH ELEVATED LEVELS OF HIGH-VALUE EXTRACTIVES
• Separation of wood tissues
Materials are shared with the Biochemical Platform (L.Jönsson)
• Spatial distribution of extractives in wood chips
NIR analysis of wood chips
Our role in Bio4Energy
ThermochemicalPlatform
BiochemicalPlatform
FeedstockPlatform
EnvironmentalPlatform
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Biofuels,”Green” Power,District Heating,
Green Chemicals,
Pulp and Paper
Forestry products,
Agriculture by-products,
WasteFractions
• Contact: Sylvia Larsson [email protected] Torbjörn Lestander [email protected]