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Coal to Electricity ….. Basics Coal Chemical Energy Super Heated Steam Pollutants Thermal Energy Turbine Torque Heat Loss In Condenser Kinetic Energy Electrical Energy Alternating current in Stator Mech. Energy Loss ASH Heat Loss Elet. Energy Loss
To remove fly ash from the flue gases electrostatic precipitators are used.
They have collection efficiency over 99.5%
The efficiency depends on various parameters such as velocity of flow, quantity of gas, resistivity of ash, voltage of fields, temperature etc
Principle of Operation The fluegas laden with flyash is sent through ducts having negatively charged plates which give the particles a negative charge. The particles are then routed past positively charged plates, or grounded plates, which attract the now negatively-charged ash particles. The particles stick to the positive plates until they are collected by periodically rapping.