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Analysis of Reduction Potential of Primary Air Pollutant Emissions from Coking Industry in China

Category: Control Techniques and Strategy

Volume: 18 | Issue: 2 | Pages: 533-541
DOI: 10.4209/aaqr.2017.04.0139
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Yan Wang1,2, Ke Cheng 2, He-Zhong Tian3, Peng Yi4, Zhi-Gang Xue4

  • 1 Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Key Laboratory of Environmental Pollutants and Health Effects Assessment, School of Public Health, Xinxiang Medical University, Xinxiang 453003, China
  • 2 Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, School of Environment, Henan Normal University, Xinxiang 453007, China
  • 3 School of Environment, Beijing Normal University, Beijing 100875, China
  • 4 Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Highlights

An emission inventory of typical air pollutants from the coking industry in China was established.
The “bottom–up” emission factor methodology was applied to make the emission estimation.
Emission contribution from various types of coke oven and coking procedures was analyzed.
Emission reduction potential from the coking industry till 2020 was projected.


Abstract

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 µm (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 (2011–2015). 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.

Keywords

Coking industry Primary air pollutants Emission characteristics Reduction potential


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