Summary
The excess ammonia concentration in the exhaust gas of a “Denox” catalyst in a large coal-fired power plant was analyzed by means of a modular infrared diode laser spectrometer. Line-locking and derivative signal processing techniques were applied. By using a low-pressure sample cell at 35 mbar and heating the gas sampling system to 350 °C, a detection limit and a stability < 0.5 ppm were obtained. The system is further characterized by a linear response for NH3 concentrations up to 200 ppm and a response time of only some seconds, which makes it suitable for real-time analysis.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1987 ECSC, EEC, EAEC, Brussels and Luxembourg
About this paper
Cite this paper
Wolf, H., Riedel, W.J. (1987). NH3-Measurements in Power Plants with “Denox” Installations. In: Grisar, R., Preier, H., Schmidtke, G., Restelli, G. (eds) Monitoring of Gaseous Pollutants by Tunable Diode Lasers. Air Pollution Research Reports. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3991-2_18
Download citation
DOI: https://doi.org/10.1007/978-94-009-3991-2_18
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8271-6
Online ISBN: 978-94-009-3991-2
eBook Packages: Springer Book Archive