Testing of flue gas emissions of a biomass pellet boiler and abatement of particle emissions

The present study aims to investigate flue gas emissions, particularly pollutants CO, NOx and particle emissions, of a domestic biomass boiler under various operating conditions. The experimental methodologies are systematically introduced. If the primary and secondary air supply for the biomass furnace are provided by the factory-set openings and vent tubes, the flue gas emissions measured are NOx 54.92 ppmv, CO2 11.98 vol%, CO 0.24 vol%, O2 8.19 vol% and PM0.1–10 concentrations 72.7 mg/Nm3 by burning wood pellets. In addition, the three kinds of cleaning technologies reducing particle emissions are also introduced.

► Biomass combustion releases some pollutants CO2, CO, SOx, NOx and particulates etc. ► An ABB gas analyser with infrared spectroscopy measures CO2, CO and O2 of flue gas. ► A HORIBA gas analyser with chemiluminescence detection measures NOx emission. ► Ceramic filter technology can remove up to 96% of PM2.5 and PM10 particles.