Flue Gas Desulfurization System, Open Spray Design, Part 1

 When you finish this lesson, you will be able to understand how the design of the open spray FGDS effectively reduces SO2 and provides substantial flexibility in meeting SO2 emissions requirements. • Discuss the purpose and operating philosophy behind the FGDS • Describe operation in both the fly ash and lime modes • Explain the use of the absorber tower and reaction tank • Identify the purpose of the spray recycle pumps • Describe the dampers and ductwork • Explain how each of the following features facilitate the meeting of emissions parameters: – Absorber bypass fraction – Number of absorbers in service – Number of pray levels in service – Fly ash and lime feed