What type of emissions do boilers produce and require monitoring?

Boilers typically produce emissions such as nitrogen oxides (NOx) and particulate matter due to the combustion process involved in generating heat or steam. Nitrogen oxides form when fuel is burned at high temperatures, and they contribute to ozone formation in the atmosphere, which can lead to environmental and health issues. Particulate matter consists of tiny particles that can be harmful when inhaled and can originate from the combustion of solid fuels and other sources within the boiler.

Monitoring these emissions is essential for ensuring compliance with air quality regulations and understanding the environmental impact of boiler operations. Proper management of NOx and particulate matter not only helps improve air quality but also promotes better operational efficiency and safety in boiler systems.

In contrast, while other options include important emissions, they don't represent the primary concerns for most boiler operations. For instance, water vapor is a natural byproduct of combustion processes and is generally not considered a pollutant. Ozone, although an important air quality issue, is not directly produced by the combustion in boilers. Additionally, while carbon dioxide and carbon monoxide are important emissions, the specific focus on NOx and particulate matter reflects the more critical regulatory concerns associated with boiler operations.