EVALUATION OF WASTE HEAT RECOVERY IN THE CEMENT INDUSTRY

Resumo

The cement industry is an energy intensive sector. The production of one ton of cement requires 4 GJ of thermal energy, which is produced through the combustion of fossil fuels and 100 kWh used to drive electrical machines. A considerable portion of the heat produced is discarded into the environment without proper utilization. Currently, approximately 7% of global CO2 emissions come from the cement industry. The gases used in the process containing waste heat are discharged through the outlets of the cyclone tower and clinker cooler at temperatures of 300 to 450°C, available for WHR energy recovery systems, such as the Organic Rankine Cycle. Wil be studied the reduction of fossil fuel consumption and CO2 emissions through the production of electrical energy using waste heat.