Development of Process Model for Assessment of Steam Treatment of Biomass for Pellet Production S M HASSAN SHAHRUKH, ADETOYESE OYEDUN, AMIT KUMAR Department of Mechanical Engineering, University of Alberta Edmonton, AB, Canada 2015 ASABE | ANNUAL INTERNATIONAL MEETING July 26 – 29, 2015, NEW ORLEANS, LA, USA
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Development of Process Model for Assessment of Steam Treatment of Biomass for Pellet Production
S M HASSAN SHAHRUKH, ADETOYESE OYEDUN, AMIT KUMAR
Department of Mechanical Engineering, University of AlbertaEdmonton, AB, Canada
2015 ASABE | ANNUAL INTERNATIONAL MEETINGJuly 26 – 29, 2015, NEW ORLEANS, LA, USA
Presentation Outline Background and Objective Pellet Production Supply Chain Model Development and Validation Mass and Heat balance of Steam
Pretreatment Techno-Economic Result Summary of Result
Presentation at ASABE, 26-29 July, 2015
Background
Presentation at ASABE, 26-29 July, 2015
• Pretreatment helps producing high quality pellets
• Energy density of regular pellets is 1/8th of coal
• High transportation cost of regular biomass and pellets
• Need for higher utilization of Biomass
Low Utilization Cost Issues
Pretreatment
Low Bulk and Energy density of
regular pellets
Objectives
Conduct Techno-Economic Assessment
Cost curves Sensitivity & uncertainty
Conduct Energy Analysis Net energy ratio (NER)
Sensitivity & uncertainty
Develop process model for steam pretreatment of straw and switchgrassHeat and mass
balanceData intensive
modeling
Presentation at ASABE, 26-29 July, 2015
Pellet Supply Chain
Biomass collectio
n
Bale formatio
n/ chipping
Transportation to
pellet plant
Pellet producti
on
Transportation of
pellet to biorefinery
Used in biorefinery
Supply chain of pellet to a biorefinery (Conventional method)
Used in biorefinery
Biomass
collection
Transportation to
pellet plant
Pellet Producti
on
Transportation of
pellet to biorefinery
Steam pretreatm
ent
Bale formation/chip
ping
Steam Pretreatm
ent
Supply chain of pellet (produced from pretreated biomass) to a biorefinery
Presentation at ASABE, 26-29 July, 2015
Experimental Material and Method
Material
Straw and switchgrass
Moisture content ~ 10%-14%
Method
Pretreatment carried in 2.6L StakeTech
Steam gun with 400g of biomass treated at different temperature
and time
Steam treated biomass pelletized
Presentation at ASABE, 26-29 July, 2015
Model Input and Validation
1. Boiler unit: Supply of steam at different time and