Transcription of Chapter 2 Selective Catalytic Reduction
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Chapter 2 Selective Catalytic Reduction
Chapter 2 Selective Catalytic Reduction John L. Sorrels Air Economics Group Health and Environmental Impacts Division Office of Air Quality Planning and Standards Environmental Protection Agency Research Triangle Park, NC 27711 David D. Randall, Karen S. Schaffner, Carrie Richardson Fry RTI International Research Triangle Park, NC 27709 June 2019 DISCLAIMER This document includes references to specific companies, trade names and commercial products. Mention of these companies and their products in this document is not intended to constitute an endorsement or recommendation by the Environmental Protection Agency. CONTENTS 2. Selective Catalytic Reduction .. 2-1 Introduction .. 2-1 Process Description .. 2-9 Reduction Chemistry, Reagents, and Catalyst .. 2-10 SCR Performance Parameters .. 2-15 SCR System Configurations .. 2-28 SCR System Primary Equipment .. 2-34 SCR System Auxiliary Equipment .. 2-41 Other Considerations .. 2-44 Design Parameters.
The generating capacity for these units ranged from 400 MW to 800 MW [7]. Typical operation and maintenance costs are approximately 0.1 cents per kilowatt-hour (kWh) [8, 9]. Table 2.1a provides capital cost estimates for electric utility boilers, and Table 2.1b presents capital cost estimates for SCR applications of various sizes in several
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