Monitoring Carbon Monoxide Emissions from Stacks

Carbon monoxide (CO) is produced in various combustion effluents as a product of the incomplete combustion of fossil fuels. It is frequently found at ppm to % levels. The analyzer can be used to "tune" to source to improve the efficiency and reduce the levels of CO.
Effluents generally contain high levels of water, sulfur dioxide, and fine particulate matter. Since CO is slightly soluble in water, any condensation in the lines would result in a loss of sample. Thus, a stack gas conditioning system was needed to remove water without effecting the CO. We used a "hot" (150?C) filter and Permapure? dryer to remove the particulate and water respectively. Now, once the water was removed from the effluent, an ambient temperature line can be run from the conditioning system to the analyzer housing. A schematic representation of the analyzer configuration is shown at the top of the next column in Fig. 1.