Climate Protection in the Japanese Cement Industry
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Climate Protection in the Japanese Cement Industry. Dec. 1, 2005. Yoshito Izumi, Ph.D. Japan Cement Association & Taiheiyo Cement Corporation. How dose Cement Industry emit CO 2 in the Processes?. Extraction Raw materials preparation Grinding, Drying, Homogenising Processing

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Climate protection in the japanese cement industry

Climate Protection in the Japanese Cement Industry

Dec. 1, 2005

Yoshito Izumi, Ph.D.

Japan Cement Association&Taiheiyo Cement Corporation


How dose cement industry emit co 2 in the processes

How dose Cement Industry emit CO2 in the Processes?

  • Extraction

  • Raw materials preparation

    Grinding, Drying, Homogenising

  • Processing

    Preheating, Calcination (CaCO3  CaO+CO2)

    Clinkering, Cooling

  • Grinding/Blending

    Grinding, Additives

  • Cement (Transportation)

The main opportunities for CO2 reduction are (1)Energy related improvement and (2) Material Recycling.


Climate protection in the japanese cement industry

CO2 Reduction Opportunities (Technologies for More Energy Efficient)

  • Increasing the energy efficiency of preheater

  • Installing a precalciner

  • Changing the production process from wet or vertical kiln to dry kiln

  • Optimizing the clinker cooler, raw materials and cement grinding

  • Switching fuels including alternative fuels

  • Electricity from waste heat recovery

  • Q: How to transfer those with incentives


Climate protection in the japanese cement industry

Transition of production capacity and combination of kiln type in Japan

Wet kilns

Other dry kilns

SP

Productive capacity(kt)

NSP

Fiscal year


Climate protection in the japanese cement industry

Change in Thermal Energy Intensity for Cement Manufacturing


Climate protection in the japanese cement industry

CO2 Reduction Opportunities (Material Recycling)

- Co-processing Technology

Reduce CO2 emissions from fossil fuel in our society by utilizing AFR

Q:This is not fully recognized yet.

- Lowering the clinker factor in cement

Q: Applicability depends on an availability of cementitious sources in a geographical area as well as market acceptance.


Climate protection in the japanese cement industry

Co-Processing Technology reduces CO2 emissions in our society

Source: CEMBUREAU, Alternative Fuels in Cement Manufacture, 1997.

CO2 from waste incineration in Japan : 24 million tons.


Cement investments for climate protection since 2000

Cement Investments for Climate Protection since 2000

Cement Industry in Japan : 18 Companies

Total Investments : US$ 300 Million

- Energy related improvements 10%

- Increase of alternative fuels 85%

- Facilities for blending cement 5%


Climate protection in the japanese cement industry

Alternative Fuels and Raw Materials

in the Japanese Cement Industry

(Unit:thousand tons)


Climate protection in the japanese cement industry

Used pachinko machines are crushed and kneaded

Used pachinko machine as AFR


Net thermal energy intensity for cement manufacturing

Net Thermal Energy Intensity*) for Cement Manufacturing

(MJ/t-cement)

*)Excluding thermal energy from alternative fuels


Key technology issues for global climate protection in the cement industry

Key Technology Issues for Global Climate Protection in the Cement Industry

Establishment of Material Recycling- Based Society

Incentivized Technology Transfer

Modernization of Facility


Climate protection in the japanese cement industry

Transition of Cement Production for Asia and Japan

China

Cement Production (X10,000t)

India

Japan

Fiscal Year

Source : JCA (China 44% and India 6% of Global Production in 2004 )


Climate protection in the japanese cement industry

Climate Protection in the Japanese Cement Industry

Thank You


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