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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?. Extraction Raw materials preparation Grinding, Drying, Homogenising Processing

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Climate Protection in the Japanese Cement Industry

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  1. Climate Protection in the Japanese Cement Industry Dec. 1, 2005 Yoshito Izumi, Ph.D. Japan Cement Association&Taiheiyo Cement Corporation

  2. 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.

  3. 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

  4. Transition of production capacity and combination of kiln type in Japan Wet kilns Other dry kilns SP Productive capacity(kt) NSP Fiscal year

  5. Change in Thermal Energy Intensity for Cement Manufacturing

  6. 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.

  7. 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.

  8. 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%

  9. Alternative Fuels and Raw Materials in the Japanese Cement Industry (Unit:thousand tons)

  10. Used pachinko machines are crushed and kneaded Used pachinko machine as AFR

  11. Net Thermal Energy Intensity*) for Cement Manufacturing (MJ/t-cement) *)Excluding thermal energy from alternative fuels

  12. Key Technology Issues for Global Climate Protection in the Cement Industry Establishment of Material Recycling- Based Society Incentivized Technology Transfer Modernization of Facility

  13. 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 )

  14. Climate Protection in the Japanese Cement Industry Thank You

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