In a cement plant, nearly 35% heat is lost, primarily from the preheater and cooler waste gases.This corresponds to around 70 to 75 MW of thermal energy. This energy can be tapped by installing a Waste Heat Recovery boiler.recently 7.5 mw cement kiln waste heat recovery boiler in Turkey and Cement production is 7500 t/d, 5500t/d or 5000t/d.
cement kiln waste heat recovery boiler
Size of Waste Heat Recovery boiler is influenced by the moisture content present in raw material and fuel (coal).Even after considering heat for drying-off nominal moisture content, around 30 kwh/ t clinker of power can still be generated by waste heat recovery boiler, i.e. say, 7.5 MW for a 6,000 tpd plant.
• Efficient use of complete cooler heat
• Simpler integration, smaller heat-exchanger surface area
• Space limitations ask for small footprint
• Fully automated operation required
• Low maintenance effort required
Application of waste heat recovery boiler
Reducing the amount of wasted heat as well as reusing it has been a matter of great concern. A waste heat recovery boiler could increase the efficiency of the cement plant as well as reduce the amount of CO2 emissions to the environment by lowering the temperature of the exhaust gases.