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Measuring Ammonia Slip from Post Combustion NOx Reduction Systems

In many facilities there may be room for process improvement that could reduce operating costs or provide revenue enhancement opportunities. Operating SNCR or SCR technology closer to its limit offers these benefits but increases the risk of high ammonia slip. The risk could be abated with the use of ammonia monitoring technology. But, except for gas-fired plants, continuous ammonia slip monitoring technologies have not been available at a practical price to facilitate these cost-saving or revenue enhancing improvements. Conditions that exist in high dust, high temperature, high NOx and/or high SO2 environments make most analyzer methods of continuously measuring ammonia unsuitable for application to coal plants. An overview of the technologies available for measuring ammonia in the high dust region downstream of a Nox reduction system and the status of their development is provided.

Revision Date:  4/14/2014

Tags:  221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Andover Technology Partners, SNCR, SCR, Analyzer - TDL, Analyzer - NH3, Ammonia Slip, Monitoring, Ammonia Monitoring