Scrubbers and Ash Removal Systems

 After finishing this lesson, you will be able to identify the primary pollutants emitted from fossil-fired boilers. In addition, you will be able to explain the basic design and operation of baghouses, electrostatic precipitators, and scrubbers. • Describe three harmful pollutants found in flue gas • Describe the difference between bottom ash and fly ash • Explain the basic equipment used to remove bottom ash from a boiler • Explain the basic equipment used to remove fly ash from a boiler • Explain the purpose of a baghouse and describe its basic operation • Explain the purpose of an electrostatic precipitator and describe its basic operation