Environmental System

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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. Ash and solids that fall to the bottom of the boiler (bottom ash) are collected in a hopper and removed periodically. Fly ash is entrained in the exhaust flow and collected in the ash precipitator. Pressure and temperature transmitters used at the inlet and outlet of the precipitator protect against clogging and overheating.

Scrubbers are typically used to remove combustion gases by bubbling exhaust through lime slurry. Detectors inside the stack monitor performance of the environmental system for emissions reports to government agencies.