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FTIR can measure NH3 along with a number of other gases. Advantages include long laser life, no liquid N2 required, small for factor, no sample pressure restrictions, easy to maintain, makes repetitive tasks easier.
Revision Date: 4/17/2014
Tags: 221112 - Fossil Fuel 化石燃料, ECO Physics, Analyzer - Nox, FTIR, Analyzer - NH3, Continuous Emissions Monitor, Monitoring, Ammonia Monitoring, Nox Monitoring
There is a comparison of NOx differential, UV photometry, TDL and IR as options for NH3 measurement. Successful control of SNCR and TDL is chronicled.
Revision Date: 4/17/2014
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Andover Technology Partners, Continuous Emissions Monitor, Analyzer - TDL, Analyzer - Nox, Analyzer - NH3, SNCR, Ammonia Slip, Nox Monitoring, Monitoring, Ammonia Monitoring
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
Constellation Energy installed SNCR systems at the CP Crane Station, units 1 and 2. These SNCR systems use continuous ammonia slip analyzers that work on the principle of tunable diode laser (TDL) spectroscopy and provide continuous, real-time indication of ammonia slip in the duct. These analyzers facilitated optimization of the SNCR system to avoid high ammonia slip transients that are the principal contributors to downstream problems normally associated with ammonia slip.
Revision Date: 4/14/2014
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Constellation Energy, Tourgee & Associates, Andover Technology Partners, Analyzer - NH3, SNCR, Analyzer - TDL, Ammonia Slip, Monitoring, Ammonia Monitoring, USA