Emissions of air pollutants from sintering flue gas in the Beijing-Tianjin-Hebei area and proposed reduction measures

Iron and steel manufacturing, especially the sintering process, is highly energy- pollution-intensive, responsible for substantial emissions of major air pollutants in China, including particulate matter (PM), sulfur dioxide (SO2), nitrogen oxides (NOx), which poses challenges to quality improvement country. In this study, we carried out a comprehensive analysis temporal spatial characteristic SO2, NOx, PM emission concentrations, quantified standard-reaching rate pollutant factors, as well discussed distribution potential reduction measures amounts based on hourly online monitoring data basic information collected from head process Beijing-Tianjin-Hebei region (BTH) 2017. We found that there was downward trend monthly concentrations during September December 2017, response control policies. By comparing with standard implemented PM, SO2 were 74.7%, 23.5%, 62.5% respectively, higher relative ultra-low standard. The factors calculated at different machine scales, be lower than previous estimates. heads BTH amounted 14.2 kt, 143.2 kt 46.3 Tangshan Handan accounted over 60% total amounts. most popular technologies applied removals are electrostatic precipitators limestone-gypsum flue gas desulfurization an average removal efficiency 71.8% 90.3%. NOx huge, more effective technical shall adopted further reduce amount process.