Biomass Energy Options for Ethanol Production

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Biomass Energy Options for Ethanol Production

• Presented To
• Iowa Renewable Fuels Summit
• Des Moines, Iowa
• Presented By
• Cecil Massie
• Sebesta Blomberg Associates
• February 28, 2007

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Firm Introduction
Founded in 1994, Sebesta Blomberg provides
Facility Management, Consulting, Engineering and
Design/Build Services to Industrial,
Institutional, Educational, Governmental and
Healthcare customers. Helping our customers
achieve their
technical and financial goals.
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Biomass Technology Alternatives

• Gasification w thermal oxidizer and heat recovery
• Direct combustion w change in dryer technology
• Remote gasification/biomethane production

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CMEC Objectives

• Achieve regulatory compliance with VOC emission
  limits
• Reduce cost of operation
• Protect shareholder equity now and in the future

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CMEC PLANT LITTLE FALLS, MN
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Ventless Drying w Energy Recovery

• Recoverable energy in DDGS vent stack
  approximately 40 of thermal input to plant
• Simultaneously cuts water use 45
• Sugar beet plants already use this concept
• Demonstration plant being constructed at Luverne,
  MN this spring
• Technology being commercially offered

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DDGS Production w Ventless Dryer

• Use of gasification is driven by need for thermal
  oxidizer
• Ventless drying technology eliminates dryer
  emissions and eliminates need for thermal
  oxidizer
• Opens options to other combustion
  technologies/fuels
• Variation on this is the FBC at Corn Plus in
  Winnebago, MN

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Biomethane/SNG Option

• Biomethane from either digestion or synthetic
  natural gas plants can replace fossil fuels in
  the existing operation
• Least conversion cost/operations upset at the
  ethanol plant
• May be coupled with dryer technology improvements
  or stand alone

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Biogas Basin Concept
Biogas Gathering Pipeline
Digester
Digester
Digester
Gas Refinery
To Natural Gas Pipeline
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Project Status

• First digester has been running for over a year
• Second digester is nearing one year mark
• Gas refinery has been in continuous operation
  since November
• Gas injection point under construction near
  Baldwin

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In Summary

• REDUCE energy consumption with new dryer
  technology
• RECYCLE water from DDGS exhaust
• CONVERT to renewable energy biomass sources from
  an array of combustion and gasification
  technologies

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Contact Information

• Cecil T. Massie PE
• Sebesta Blomberg Associates
• 2381 Rosegate
• Roseville, MN 55113
• 651-634-7242
• cmassie_at_sebesta.com

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• Thank You

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