NDLI: Emerging Challenges and Design Strategies for SCR Systems

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Czarnecki, Larry Oliveira, Paulo
Copyright Year	2014
Abstract	Selective Catalytic Reduction has been well demonstrated as an effective technology for reducing NOx emissions from coal-fired utility boilers. Emerging environmental regulations can have an impact on the traditional design and operation of an SCR system. Increasing demands on SCR emission reduction performance affects the design of many of the SCR components aside from the catalyst bed. Obtaining an optimal distribution of ammonia reagent in the flue gas stream is a primary requirement for high performance levels. This requirement must be balanced with limited space availability, all while obtaining both robust operation and minimal operating costs. Addressing these issues has led to the development of a variety of ammonia injection and distribution methods. Gas mixer designs, such as the IsoSwirl™ mixer, offer a means to obtain high levels of NOx removal while addressing problematic conditions and featuring simple ammonia delivery systems. Ammonia injection methods may utilize either traditional, vapor-phase techniques or the direct injection of an aqueous ammonia supply which avoids ammonia vaporizer requirements.
Sponsorship	Power Division
File Format	PDF
ISBN	9780791846087
DOI	10.1115/POWER2014-32089
Volume Number	Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines, Generators and Auxiliaries; Plant Operations and Maintenance; Reliability, Availability and Maintainability (RAM); Plant Systems, Structures, Components and Materials Issues
Conference Proceedings	ASME 2014 Power Conference
Language	English
Publisher Date	2014-07-28
Publisher Place	Baltimore, Maryland, USA
Access Restriction	Subscribed
Subject Keyword	Design Regulations Catalysts Coal Vapors Nitrogen oxides Boilers Flue gases Selective catalytic reduction Emissions
Content Type	Text
Resource Type	Article

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