Emissions Monitoring

Gas Analysis for Continuous Emissions Monitoring CEMs

To protect the environment and reduce health issues for their citizens, government regulators around the world aim to limit the emission of harmful air pollutants, such as hydrogen chloride (HCl), hydrofluoric acid (HF), hydrogen sulfide (H2S) and ammonia (NH3), from power generation and industrial processes. The most recent targets of tighter HCl regulations in the US are coal-fired power plants and Portland cement plants. These plants now find that advanced spectroscopic gas analyzers can play an important role in ensuring compliance with new limits on HCl emissions in a simple and cost-efficient manner.

With their high precision, great sensitivity and freedom from cross-interference, Tiger Optics’ Cavity Ring-Down Spectroscopy (CRDS) analyzers are ideal analytical solutions to monitor such pollutants without interference from moisture, ozone, oxygen, SO2, and other compounds present in flue and stack gas. Tiger Optics analyzers have repeatedly outperformed traditional technologies, including FTIR, for this application in a variety of challenging comparison tests, and also proven their reliability and excellent performance in many CEM system installations. 

From trace HCl measurements to comply with US EPA rules, to continuous monitoring of ammonia slip for reducing the cost of abating NOx, Tiger Optics delivers reliable 24/7/365 emissions monitoring in real-time on the stack and in CEM shelters on the ground. With unmatched detection sensitivity, our analyzers can be easily integrated into existing CEMs dilution systems for interference-free measurements.

Because of the many advantages of CRDS, the National Institute of Standards and Technology (NIST) used the Tiger Optics HCl analyzer to develop its HCl standards.

CRDS is ideally suited to the requirements of numerous environmental measurement applications, including CEM, where accuracy, sensitivity, freedom from interferences, low detection limits, speed of response, long-term stability, low maintenance, and low gas consumption are all essential.


CEM Standards Preparation

Coal- and oil-fired plants must now comply with the Mercury and Air Toxics Standards (MATS) rules adopted by the EPA in February 2012 and PS 18. For compliance measurements, power plants require accurate calibration gases.


HCl Continuous Emissions Monitoring

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