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GHG reduction in cement industry and the contribution to social
infrastructure
October 7, 2015
Kenji Ogawa Acting Chair of Production and Environment Committee
Japan Cement Association
Director, Senior Executive Officer Taiheiyo Cement Corporation
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Safety Society
Society in harmony with nature •Concrete structures for disaster prevention •Biodiversity at quarry
Low-Carbon Society •Energy efficiency at plant •Concrete pavement •Green building
Recycling–based Society •Utilization of alternative fuels and raw materials (AFR) at plant
Our Contributions to Social Infrastructure
Sustainable Society
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Our Intended Nationally Determined Contribution
2030 Target (vs. 2013)
*
The target by 2030 is set by taking into account of pledges from 53 industries and companies under the KEIDANREN's Commitment to a Low Carbon Society. http://www.keidanren.or.jp/en/policy/2013/003.html
Decided NOT by top-down but bottom-up approach.
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FY 2010 FY 2030 FY 2020
3459 MJ/t-cem
Target 2020
3420
MJ/t-cem
3431 MJ/t-cem
FY 2013
Japanese Cement industry keeps on challenging to install energy saving equipment and utilize Alternative Fuels and Raw materials [AFR].
Target 2030
3410
MJ/t-cem
Cement Roadmap Targets by 2030
5
2000
2500
3000
3500
4000
4500
1970 1975 1980 1985 1990 1995 2000 2005 2010
Spe
cific
ther
mal
ene
rgy
cons
umpt
ion
Fiscal year
including alternative fuels
excluding alternative fuels
Note: Data collection for alternative fuels has been made since 1980
Our Performance Indicator
(MJ/t-cement)
Specific Thermal Energy Consumption
Installment of Modern Kiln
Technology Conserved Effect [per technical unit] %
2010 Perspective
% 2020
Waste heat recovery for power generation
Approximately 35~40kWh/t-cli. power conserved
60 68
High performance vertical mill for grinding blast furnace slag
Maximum 40kWh/t-cem. power conserved
73 78
Roller mill system to pre-grind clinker
10~20% improved of specific power consumption during finishing process
46 -
Air beam type cooler for clinker
42~167kJ/kg-cli. of energy conservation
0.5~1.5kWh/t-cli. of power saving
50 57
High performance separator
10%~20% improved of specific power consumption
53 -
Vertical coal mill 20~25% improved of specific power consumption
90 96
Vertical roller mill for grinding raw materials
Approximately 30% improved of specific power consumption during raw material preparation
46 -
Diffusion Rate of our Best Available Technologies
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Note: Total thermal energy consumption consists of values for fossil fuels, alternative fuels, and biomass. Thermal energy is measured in terms of low heat value(LHV) base. There is no correction for waste heat recovery power generation.
Comparison of Thermal Energy required for Clinker Production
Junichiro Oda; International comparisons of energy efficiency in power, steel and cement industries, Energy plicy 44 (2012) 118-129
Theoretical Value
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Safety Society
Society in harmony with nature •Concrete structures for disaster prevention •Biodiversity at quarry
Low-Carbon Society •Energy efficiency at plant •Concrete pavement •Green building
Recycling–based Society •Utilization of alternative fuels and raw materials (AFR) at plant
Our Contributions to Social Infrastructure
Sustainable Society
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Power Fly ash, dust gypsum
Sewage sludge
Automotive Moulding sand, paint shredder residue, used tires
Steel Slag, ash Precipitator dust
Construction and building materials Soil, board, gypsum, wood
Agriculture and Forestry Plastics, thinned wood
Local Municipality Solid wastes, incineration ash
Chemicals Solvents, plastics, residue, oil
Pulp & paper Incineration ash
Printing Incineration ash, plastics, solvents
Food products Plastics, distillery residue, glass, oil
Nonferrous smelting Copper slag, moulding sand
Establishment of Recycling–based Society
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Item 1990 1995 2000 2005 2010 2013 2014
Blast furnace slag 12,228 12,228 12,162 9,214 7,408 8,995 8,065
Coal ashes 2,021 3,103 5,145 7,185 6,631 7,332 7,407
Dirt and Sludge 312 905 1,906 2,526 2,627 3,206 2,970
By-product Gypsum 2,300 2,502 2,463 2,707 2,037 2,401 2,320
Waste tires 101 266 323 194 89 65 58
Waste oil 141 233 359 447 470 459 435
Waste plastics - - 102 302 445 518 595
Wood chips - - 2 340 574 657 696
Construction Soil 4,660 5,602 4,897
2,097 1,937 2,407 2,598
Others 4,581 3,809 4,225 4,068
Total 21,763 25,097 27,359 29,593 25,995 30,265 29,212
(Unit:thousand tons)
Alternative Fuels and Raw Materials used in Japan
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Safety Society
Society in harmony with nature •Concrete structures for disaster prevention •Biodiversity at quarry
Low-Carbon Society •Energy efficiency at plant •Concrete pavement •Green building
Recycling–based Society •Utilization of alternative fuels and raw materials (AFR) at plant
Our Contributions to Social Infrastructure
Sustainable Society
Case study of quick plant operation for reconstruction and debris disposal management
1. Moving image and Pictures of the Great East Japan Earthquake and Subsequent Tsunami 2. Debris Disposal Collaboration with Government
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― 13 ―
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Our Plant Damages suffered by Huge Tsunami
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Disaster Debris Disposal Management
Role of Japanese Cement Industry in Management of Disaster Waste Disposal
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Ministry of the Environment
Private sector
JCA etc. Expert group
Academia etc.
Regional Environmental Office [Local task force for disaster debris disposal]
Local governments
After disasters
Support for activity
Request
Co-operation Request
Support for activity
Request
Request
D. Waste-Net
Dispatch (For recovery and support)
Dispatch with self-decision
Request for support
Support depending on each association
Introduction for technical support etc.
Dispatch based on each agreement
Dispatch based on each agreement
CH4 CH4
Effect of Biological Co-processing on CO2 Emissions
CO2
Landfill
CO2
CO2
Ash is used for producing
clinker
Cement
Source: Sustainable cement production, CEMBUREAU
Landfill
Incineration
Utilizing for Cement Production
Ash
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CH4
Rotten fish and shellfishery along the shore
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Summary
The cement industry should make a well-balanced contribution to a social infrastructure toward the sustainable society consisting of a low-carbon society, a recycling-based society and a society harmonized with nature.
We, JCA, defined an enegy performance indicator to aim at assessing measures taken towards sustainable soceity.
Global cement sector could share how for the Japanese cement industry effectively to dispose disaster debris collaborated with local government.