Research on utilization for

Biomass SourceHachinohe National College of Technology （ HNCT)Department of Civil and Environment engineering

Hasegawa Yuri

Content1. Background and Purpose2. Research content ・ woody resources ・ BTL ・ potential quantity of woody biomass ・ proposal of utilization in Hachinohe3. Conclusion

Utilize Unused Forest

Resources

Woody biomass…occurred on the seashore etc.

incineration and industrial waste treatment

・ Prepare the Biomass plantation obtain resource quantitatively

・ Liquefied fuel generation technology be changed into electric power and heat

now

plan

We should use effectively

Keywords

・ Carbon-neutral

・ Woody biomass

・ The electricity generation by biomass

Investigation andexamination content

1. Estimation of potential amount of woody biomass resources in Aomori Prefecture

2. The feature of woody biomass power generation, and presumption of potential quantity

3. The feature of Biomass-to-Liquid technics (BTL), and presumption of potential quantity

4. Proposal what use in Hachinohe-city

Woody biomass power generation

Energy potential quantity of trees or grass= (Weight of a driftwood, pruning branch and Grass cutting generate) × Net calorific value × (1 － Moisture content)

Net calorific value: Driftwood and pruning branch 10,390MJ/t Grass cutting 13,950MJ/t Moisture content: Driftwood and pruning branch 36.2 ％ Grass cutting 15.8 ％

　　　　　　　　 1MJ=0.278kWh

CO2 Emissions

CO2 Emissions (kg-CO2)

= Amount of power used (kWh) × Emission factor (kg-CO2/kWh)

The Emission factor: 0.473 kg-CO2/kWh

Aomori Prefecture

Aseishi dam

Takase river

Aomori office

Woody biomass recovery quantityand CO2 emissions

Administrator Kind

Recovery quantity Electric power Heat

(kN/year)

Expected extractio

n(MWh)

CO2

Emissions(kN)

Expected extractio

n(MWh)

CO2

Emissions(kN)

Aomori river

national highway

office

Driftwood 5,331 251 1,162 401 1,859

Aseishi river office

Driftwood 2,185 103 476 164 762

Takase river office

Pruning branch 274 13 60 21 96

Grass cutting 3,234 269 1,249 431 1,998

Sum total   11,024 636 2,947 1,017 4,715The investigation of recovery quantity: 2000-2004 year

(track record for five years)

The manufacturing process of BTL

Aged deterioration of woody resources

(2004-2010)

Aged deterioration of resources

  Industrial Wood Chips Residues

2004 15,615 114 4,051 7,803

2005 16,166 110 4,374 7,917

2006 16,609 105 4,435 7,608

2007 17,650 100 4,656 7,405

2008 17,709 96 5,201 6,554

2009 16,619 92 4,657 5,735

2010 17,193 88 4,699 6,294

(1,000m3)

Presumption of the potential quantity of a crude oil equivalent (BTL)

  Industrial Wood Chips Residues

2004 69.9 0.512 18.1 34.9

2005 72.4 0.492 19.6 35.4

2006 74.3 0.470 19.9 34.1

2007 79.0 0.448 20.8 33.1

2008 79.3 0.430 23.3 29.3

2009 74.4 0.412 20.8 25.7

2010 77.0 0.394 21.0 28.2

(10,000kL)

The utilization proposal of woody biomass (Hachinohe-Port)

Conclusion1. It is important for Japan to use

woody biomass as energy resources.

2. Aomori is blessed with nature and holds many forests. Exploitation of woody biomass resources is maintainable energy resources.

3. We should coexist with nature, which is important to utilization of them.

Thank you.