Innovative Airflow Process Data for Stable Stoichiometric Combustion

Stable, stoichiometric combustion in coal-fired boilers relies on accurate measurement of primary, secondary, and over-fire air. Conventional differential pressure sensors drift under high temperature and dust, leading to unreliable airflow data, uneven fuel-air distribution, unstable flames, and increased NOx emissions. McON Air from PROMECON provides a fully drift-free, triboelectric measurement solution with real-time, one-second updates and high dust and temperature tolerance. By delivering reliable, cross-sectional airflow data, the system stabilizes damper operation, ensures consistent stoichiometric combustion, reduces excess air, and improves fuel efficiency. Power plants report up to 15% lower NOx and leaner combustion with less fan energy required. Drift-free measurements also reduce maintenance, eliminate repeated tuning campaigns, and allow operators to focus on optimization. This paper demonstrates how McON Air transforms airflow measurement from a weak link into a robust foundation for low-emission, efficient, and trouble-free boiler operation.