Hi. I’m Ruth Lindley and I’m happy to get the chance to tell you how to solve a significant problem in refining in a relatively simple and straightforward manner. The problem is ammonia slip.
Nitrogen oxides result from the combustion process in turbines, crackers, combustion engines, boilers, and other locations within a plant. NOX is a powerful pollutant, so it is important to control and contain NOX emissions. Both selective catalytic and selective non-catalytic reduction (SCR and SNCR) are techniques used worldwide to remove NOX. However, this process can result in a byproduct of unreacted ammonia, or ammonia slip. Continuous measurement and monitoring of ammonia slip can be a challenge to ensure sample integrity is maintained, especially in high-dust, high-temperature applications. But regardless of the complexity, to adhere to environmental guidelines, operators must balance using the precise amount of ammonia – not enough ammonia results in waste, too much can lead to emissions.
So how to solve the ammonia slip problem? The answer is QCL/TDL laser technology. (You may not have been expecting that!) In fact, capable, fast Rosemount QCL/TDL technology delivers the needed measurement precision (0–100 ppm) to ensure production is at its optimum and avoid overdosing issues that result in both economic and environmental problems and cost.
Quantum Cascade Lasers monitor ammonia slip to avoid the formation of damaging ammonia salts downstream or emission of ammonium chloride or gaseous ammonia, and the regulator fines and penalties that result. Here are some of the benefits of Quantum Cascade Lasers in this challenging application –
For additional information on the specific QCL/TDL laser products that might work for you, click HERE.
The QCL/TDL laser solution to ammonia slip may seem almost too good to be true – but it’s real and operating in plants worldwide. It’s time for all of us to adjust our thinking on the ammonia slip issue, accepting that there is a better way to overcome it efficiently, reliably, and cost-effectively.
Have thoughts or questions about QCL/TDL laser technology? Post them HERE!
By Amanda Gogates, Product Manager for Quantum Cascade Laser Analyzers, Emerson Process Management
You may have seen a few stories already on the innovative QCL laser technology. That technology has now been successfully implemented in Emerson’s Rosemount™ CT5100 continuous gas analyzer. It is the world’s only hybrid analyzer to combine Tunable Diode Laser (TDL) and Quantum Cascade Laser (QCL) measurement technologies for process gas analysis and emissions monitoring. The CT5100 provides the most comprehensive analysis available (down to sub ppm) for detecting a range of components, while simplifying operation and significantly reducing costs. The CT5100 can measure up to 12 critical component gases and potential pollutants in a single system – meeting local, state, national, and international regulatory requirements.
But if you’re thinking that the CT5100 is remarkable but “bleeding edge” technology that your application can’t afford – think again. The Rosemount CT5100 operates reliably with no consumables, no in-field enclosure, and a simplified sampling system that does not require any gas conditioning to remove moisture – truly “next generation” technology which saves you money at every turn. The CT5100 is a unique combination of advanced technology and rugged design, and is highly reliable. Its patented laser chirp technique expands gas analysis in both the near- and mid-infrared range, enhancing process insight, improving overall gas analysis sensitivity and selectivity, removing cross interference, and reducing response time. This laser chirp technique produces sharp, well-defined peaks from high resolution spectroscopy that enables specificity of identified components with minimum interference and without filtration, reference cells, or chemometric manipulations.
The rugged Rosemount CT5100 analyzer features –
Give your Emerson representative a call and discuss the potential of the CT5100 in your process gas analysis, continuous emissions monitoring, and ammonia slip applications. This could be a whole new solution to some costly problems. Click HERE for more information on the CT5100.