yasunari matsuno, ichiro daigo, masaru yamashita and yoshihiro adachi
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Reduction of Environmental Impacts by Development of Industrial Symbiosis in Japan - Case Studies for Application of Co-production Technologies in Steel Industries and its Reduction Potential of Greenhouse Gas Emissions -. Yasunari Matsuno, Ichiro Daigo, Masaru Yamashita and Yoshihiro Adachi - PowerPoint PPT PresentationTRANSCRIPT
Reduction of Environmental Impacts by Development of Industrial Symbiosis in Japan
- Case Studies for Application of Co-production Technologies in Steel Industries and its Reduction Potential
of Greenhouse Gas Emissions -
Yasunari Matsuno, Ichiro Daigo, Masaru Yamashita and Yoshihiro Adachi
Department of Material Engineering, Graduate School of Engineering, The University of Tokyo
Topics Introduction – Backgrounds of this study What is “Co-production” technology Application of Co-production technologies
in Steel industry– Low-temperature Gasification Plant– CO2 Recovery and Utilization System
Results of the case studies Conclusion
To maximize energy, resource,environmental efficiency
Recycle-oriented SocietyKyoto Protocol (Reduction of GHGs)
Industrial symbiosis
Individually optimization
Industry A
Industry BIndustry C
Energy,Resources
Industry A
Industry B
Industry C
Energy,Resources
Example of “Industrial symbiosis”
Jurong Island, Singapore
To develop Jurong Island into a World-Class Chemicals Hub in the Asia Pacific RegionOilco
al
Natural gas
Low
grade oil
Fuel Oil
Stee
l, C
emen
t
Recycle Hub ゙( value chain
cluster )
Environment
Final wastesCO2, Exhaust heat
Products
Wastes
Power, gas
Recycled materialsH2 , Syngas High press. SteamElec. PowerFuels
IGCC Pow
er Plan
t
consumer
Final wastes
Environment
consumer
Chemicals Medicine
Locations of key industries
Steel works
Refineries – Petroleum industry
Ethylene plants – Petrochemical industry
LNG tanks
Potentials to develop industrial symbiosis
Fuels , Energy
Raw materials
Power Generation Manufacturing Pro.
Fuels , Energy
Raw materialsWastes
Power Generation Manufacturing Pro.
Main products ・ Goods ・ Electricity ・ Materials
Large amount of waste heat
(1) Existing System
(2) Co-production System Main products ・ Goods ・ Electricity ・ Materials
Little waste heat
Co-products・ Fuels・ Chemicals・ Steam etc.
Newly Energy Saving Process
What is co-production technology? - Technologies for Industrial symbiosis
Exergy
Material Environment
Capacity operating rate
Energy efficiecy
Exergy
Material Environment
Capacity operating rate Exergy
Material Environment
Capacity operating ratio
Conventional Co-generation Co-production
Energy efficiency Energy efficiency
Industry A
Industry B Industry C
Energy,Resources
Energy,Resources
Industry A
Industry B
Industry C
Goal and scope
・ To expand system boundary to evaluate total environmental impacts
・ To investigate environmental impacts of Co-production technologies (for Industrial symbiosis)
• Gasification plant• Dry ice (cryogenic energy ) production plant with CHP
Steel works
Methodology
・ Industries (capacity, location)・ Waste heat distribution・ Demand and supply of products, energy
2 . To conduct LCA for co-production technologies
- CO2 emissions-
1 . To investigate where to apply co-production technologies
3 . To optimize the transport of products by Linear Planning method
4 . To investigate total environmental impacts
Co-production technology
Current technology
11st Stepst Step
To assess the reduction potential of environmental impacts by co-production technology.
To compare with current technology.
22nd Stepnd Step
To assess the reduction potential of environmental impacts in a industrial cluster scale.
To investigate the demand and supply of energy and products.
To develop a model
33rd Steprd Step
To assess the reduction potential of environmental impacts in a regional (country) scale.
To develop database.
To integrate with other tools.
Power stations
Fuel gasSteel plant with co-production process
Electricity
Demand and Supply
Grid mix
Conventional process
Demand and Supply
Where to apply co-production technologies?
- Waste heat distribution in industries in Japan
Waste heat amount Waste heat distribution
Apply Co-production technology to Steel industry
Electricity
SteelChemical
Waste incin.9%
Paper pulp
Others
Ceramic
Waste heat distribution in steel works
0500
10001500
200025003000
Tcal/
year
冷却水固体ガス
Exhaust gas from Coke oven, BFG
etcCOGLDG etc
WaterSolidGas
Co-production technology (1)
High-temperature
Waste heat
High efficiency gasification plant with high-temperature waste heat (600 )℃
Tar1t
Waste heat at 873 K
1300 McalGasification
plant
Gas
Steam
CO/H2 = 28300Mcal
Methanol5810 Mcal
Electricity
or
Methanol: easy for storage,
Utilizing waste heat
ICFG : Internally Circulating Fluidized-bed Gasifier
Synthesis Gas Combustion Gas
GasificationChamber
Char-CombustionChamber
Fluidizing mediumdescending zone Heat Recovery
Chamber
Fluidizing medium &Pyrolysis Residue (Char, Tar)
Heat TransferTubes
Steam Air
Feedstock(Fuel or Wastes)
Co-production technology (2)
Low temperature waste heat
Dry Ice (cryogenic energy ) production with CHP (Utilizing
waste heat)
Exhaust gas recovery
Waste heat at at 423 K 305kcal
Electricity: 0.176 kWh
Dry ice production process
CHPDI
1kg
Cooling Tower
Chemical Heat Pump
Flashtank
Compressor
CO2 gas from co-production processes
Liquefied CO2 tank
High-stageexpander
Dry-Ice press
Dry-Ice
Gas Cooler Liquefier Sub-cooler
Low-stageexpander
Co-production technology (2)
LCA for Co-production technologies
Fig. CO2 emission intensity for co-products (kg-CO2/kg)
00.050.1
0.150.2
0.25
Dry ice(conventional)
Dry ice (co-production)
Methanol(conventional)
Methanol (co-production)CO
2 emi
ssion
inte
nsity
(kg-
CO2/
kg)
Location of steel works in Japan
Location of methanol consumer in Japan
Location of steel works and methanol consumer in Japan
Total CO2 emissions - Core technology
Fig. CO2 emission intensity of methanol
0.019
0.22
0.013
0.15
0 0.1 0.2 0.3 0.4
Co- production
conventional
CO2 Emissions CO2(kg- )
2 emissions at synthesisCOprocess
2 emissions at the transportCOstage
Total CO2 emission reduction potential in Japan
CO2 emission reduction potential by co-production technologies:Methanol: 0.34 ton-CO2/ton-methanolDry ice: 0.13 ton-CO2/ton-dry ice
Current demand in Japan:Methanol: 1.8 million ton/y, Dry ice: 0.24 million ton/y
Total CO2 emission reduction potential in Japan: Methanol: 0.6 million ton/y Dry ice: 0.03 million ton/y
Other possible application of dry ice
Low temperature crushing of PP pellet
PP pellet (3mm diameter)
Microscope of crushed pp pellet (200μm/div)
Low temperature crushing of PP - Conventional technology
Low temperature crushing of PP - by dry ice
PP pellet :1 kg
Liquefied N2 :9.68 kg
Crushed PP : 1 kg
PP pellet :1 kg
Dry ice :3 kg
Crushed PP : 1 kg
CO2 emissions :2.33 kg-CO2
CO2 emissions :0.23 kg-CO2
Δ2.10 kg-CO2
Potential demand of crushed PP: 0.017 million ton/y (0.64% of total PP)CO2 reduction potential: 0.036 million ton-CO2
Conclusion • Methanol production by co-production technology (gasification plant) will reduce CO2 emissions by 91% compared with conventional technology (92% reduction in production, 90% reduction in transport)
• Total CO2 emission reduction potential in Japan by methanol production : 0.6 million ton-CO2
• Dry Ice (cryogenic energy) production by co-production technology will also reduce CO2 emissions by 64% compared with conventional technology. Total CO2 emission reduction potential in Japan is 0.03 million ton-CO2.
• Other CO2 reduction potential by applying dry ice is being investigated, such as low temperature crushing of PP pellet
Thank you very much for your attention.
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