With the aid of novel technology, waste heat - being generated during the cement production process - can be used for electricity generation. This implies not only cost savings but especially benefits the environment by reducing the use of natural resources.
HeidelbergCement applied this technology for the first time on a large scale in its Chinese plants in Jingyang, Fufeng and Zhujiang. Using waste heat from clinker coolers and kiln exhaust gases as well as when converting water into steam, up to 9 megawatts of electrical power can be generated. This corresponds to around a third of the total electricity consumption of a cement plant.
At the Zhujiang cement plant, waste heat power has been generated since November 2007 without any disturbances. Its installed capacity is 7.5 MW. The generator produces around 30 kWh/tonne of clinker.
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The volume of waste leather burned at the Zhujiang cement plant will be increased from 1 tonne per hour to 3 tonnes per hour.
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The waste heat power generator at the Zhujiang cement plant was completed in November 2007 and has a capacity of 7.5 MW.
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