科研之友
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摘要
Air pollutant emissions from the coking industry in China, the world's largest coke producer, are a major societal concern. This study employed a bottom-up emission-factor methodology to estimate the country's coking-industry air-pollutant emissions. Total suspended particulate matter (TSP), particulate matter with an aerodynamic diameter less than or equal to 2.5 mu m (PM2.5), sulfur dioxide (SO2), nitrogen oxides (NOx), volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), carbon monoxide (CO), and methane (CH4) were considered. The emissions in 2015 were estimated to be 368.36, 23.28, 402.54, 174.43, 1325.42, 28.24, 2036.43, and 71.68 kt for TSP, PM2.5, SO2, NOx, VOCs, PAHs, CO, and CH4, respectively, with an annual average growth rate of 1.1% during the 12th five-year-plan (20112015). A comparative analysis was performed on emission contributions from air pollutants produced by various types of coke ovens and using various coking procedures. The objectives of the 13th five-year-plan (2016-2020) were used to predict China's production of coke and methods of control in 2020 and to analyze the potential reduction in typical air pollutants. The results show that emissions of TSP, SO2, and NOx will be reduced by 82.9%, 94.4%, and 6.9%, respectively. Moreover, this study proposes a series of feasible control measures for air-pollutant emissions from the coking industry in China.
