May 2020

Process Controls, Instrumentation and Automation

Selecting the right gas analyzer to optimize monitoring of NOx and other emissions

Combustion processes of all types generate emissions of one kind or another.

Kamphus, M., Emerson Automation Solutions; Williams, K., Emerson

Combustion processes of all types generate emissions of one kind or another. For example, hydrogen- and carbon-based combustion processes produce water and carbon dioxide (CO2), respectively. Some emissions, such as the sulfur dioxide produced by the combustion of sulfur-laden fossil fuels, are classified as pollutants and are regulated by environmental agencies. Pollutants can be minimized by careful combustion control, or by minimizing precursors in the fuel, such as choosing to burn low-sulfur oil and coal. Pollutants that cannot be reduced sufficiently to meet regulations must be captured or converted through an emissions control system before release, and treated to remove their problem

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