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Optimized Heat Recovery in Clinker Cooler

Heat recovery can be improved through reduction of excess air volume, control of clinker bed depth and new grates such as ring grates. Control of cooling air distribution over the grate may result in lower clinker temperatures and high air temperatures. A recent innovation in clinker coolers is the installation of a static grate section at the hot end of the clinker cooler. Additional heat recovery results in reduced energy use in the kiln and precalciner, due to higher combustion air temperatures.

Development Status Products

Optimized Heat Recovery in Clinker CoolerCosts & Benefits

Parent Process: Clinker Cooling
Energy Savings Potential

Savings of 0.05 to 0.16 GJ/t clinker through the improved operation of the grate cooler is reported.

CO2 Emission Reduction Potential

Investments are estimated to be US $0.11 to $0.33/annual tonne clinker capacity. Estimated payback period: 1-2 years.

Optimized Heat Recovery in Clinker Cooler Publications

Energy Efficiency Improvement Opportunities for the Cement Industry

The U.S. Environmental Protection Agency’s (EPA) energy guide, Energy Efficiency Improvement and Cost Saving Opportunities for Cement Making, discusses energy efficiency practices and technologies that can be implemented in cement manufacturing plants. This ENERGY STAR guide provides current real world examples of cement plants saving energy and reducing cost and carbon dioxide emissions.

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