Prospectus of Waste Heat Recovery Power Plant in Lafarge Surma Cement Ltd

In the current world Bangladesh is the biggest importer of Clinker, as the raw materials for clinker calcination is a foreign product to this country. Every year the government spends 125 million USD to import clinker. But the scenario is expected to change in the near future as limestone ore, the main ingredient for clinker has been discovered in the country. Thus there will be an increase in the number of local calcination plants and a certain rise in emission of Green House Gas. In such industries about 90 % of the energy is used as heat energy and out of which 35 % of is released to the atmosphere as waste. This paper proposes a methodology to utilize the waste heat released from Pre-heater and Air Quenching Cooler of the plant for the effective generation of electricity. Electricity crisis has always been an issue in Bangladesh. Even today the per capita electricity consumption of Bangladesh is 160 th of that of USA. With the fast depletion of Natural gas in the country, Waste Heat Recovery Power Plant (WHRPP) can be a strong armament to fight this crisis. Lafarge Surma Cement owns the only clinker calcination plant of Bangladesh. If a WHRPP project is being implemented in this site the annual electricity generation is expected to be 64, 800 MW. hr which will reduce the CO_2 emission by41, 286.88 tons.