Power Generation


Each coal-fired power plant is unique and has varying instrumentation needs based on the equipment used, regional regulations, fuel, and other factors. This guide presents typical instrumentation in the major sections of a standard coal-fired power plant.

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Air/Ignition System

Boiler water is heated by burning pulverized coal and primary air. Oil fired igniters light coal burners which continuously supply heat to generate steam. Forced air is injected directly into the boiler.

Coal System

Raw coal is brought into the plant and unloaded into large storage piles. A coal crusher reduces pieces in size, then feeds into a silo that stores 8 to 12 hours of supply.

Environmental System

By-products of combustion are ash, gases and heat wastes. The heat is dissipated through the cooling system, while the solids and gases are removed through the environmental system.

Steam Generation

Low-pressure feedwater heaters use steam from the turbine to heat and pressurize water drawn from the hotwell condenser.

Steam System

From the steam drum, steam passes through the superheater and into the turbine, which converts the heat into mechanical energy.

Water Treatment

Boiler water must be pure to eliminate build-up in boiler tubes and on turbine blades causing loss of efficiency and potential damage to equipment and personnel.